Spring cache Redis Key生成策略

Stella981
• 阅读 925

最近使用Spring cache,发现使用默认生成的key策略只使用了方法入参作为key,很不灵活,用到真实的项目中也不太靠谱,于是自己实现它的key生成策略。

参考官方文档:http://docs.spring.io/spring/docs/current/spring-framework-reference/html/cache.html

spring 默认的key生成实现是

org.springframework.cache.interceptor.SimpleKeyGenerator

感兴趣的同学自己看下,具体我就不描述了。

自定义生成策略需要实现下面的接口: 接口对应方法参数,需要调用的目标对象实例,目标方法,目标方法入参

public interface KeyGenerator {

    /**
     * Generate a key for the given method and its parameters.
     * @param target the target instance
     * @param method the method being called
     * @param params the method parameters (with any var-args expanded)
     * @return a generated key
     */
    Object generate(Object target, Method method, Object... params);

}

下面展示我实现的方式

import java.io.Serializable;
import java.lang.reflect.Method;

import org.springframework.cache.interceptor.KeyGenerator;

/**
 * 实现spring cache的默认缓存实现策略
 * @author lisuo
 *
 */
public class DefaultKeyGenerator implements Serializable,KeyGenerator {

    /**
     * 
     */
    private static final long serialVersionUID = 5944569667769217577L;

    @Override
    public Object generate(Object target, Method method, Object... params) {
        return new DefaultKey(target, method, params);
    }
}

这里必须要知道的是,spring cache在判断是否命中数据时,是基于底层的缓存实现判断是否命中key的。

下面结合redis展示我的实现:

import java.io.Serializable;
import java.lang.reflect.Method;

import org.apache.commons.lang3.ArrayUtils;


/**
 * Spring cache key 生成策略
 * @author lisuo
 */
public class DefaultKey implements Serializable{
    
    private static final long serialVersionUID = -8536541050699277557L;
    
    /** 调用目标对象全类名 */
    protected String targetClassName;
    /** 调用目标方法名称 */
    protected String methodName;
    /** 调用目标参数 */
    protected Object[] params;
    
    public DefaultKey(Object target, Method method, Object[] elements) {
        this.targetClassName = target.getClass().getName();
        this.methodName = generatorMethodName(method);
        if(ArrayUtils.isNotEmpty(elements)){
            this.params = new Object[elements.length];
            for(int i =0;i<elements.length;i++){
                Object ele = elements[i];
                this.params[i] = ele;
            }
        }
    }
    
    private String generatorMethodName(Method method){
        StringBuilder builder = new StringBuilder(method.getName());
        Class<?>[] types = method.getParameterTypes();
        if(ArrayUtils.isNotEmpty(types)){
            builder.append("(");
            for(Class<?> type:types){
                String name = type.getName();
                builder.append(name+",");
            }
            builder.delete(builder.length()-1, builder.length());
            builder.append(")");
        }
        return builder.toString();
    }
    
}

上面只是缓存应用的实现,具体我们看下Redis底层缓存管理器的实现

首先是CacheManager

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Set;

import org.apache.commons.collections.CollectionUtils;
import org.springframework.cache.Cache;
import org.springframework.cache.support.AbstractCacheManager;
import org.springframework.util.Assert;

import com.study.demo.util.RedisUtil;

/**
 * Redis缓存管理器,实现Spring Cache接口
 * @author lisuo
 *
 */
public class RedisCacheManager extends AbstractCacheManager {
    
    private RedisUtil rcache;
    
    //缓存前缀
    private String cachePrefix;
    
    //储存缓存名称的set集合key名称
    private String cacheNameSet;
    
    public RedisCacheManager(RedisUtil rcache,String cachePrefix,String cacheNameSet) {
        Assert.notNull(rcache, "Cache must not be null");
        Assert.notNull(cachePrefix, "CachePrefix must not be null");
        Assert.notNull(cacheNameSet, "CacheNameSet must not be null");
        this.rcache = rcache;
        this.cachePrefix = cachePrefix;
        this.cacheNameSet = cacheNameSet;
    }
    
    @Override
    protected Collection<? extends Cache> loadCaches() {
        List<Cache> caches = new ArrayList<>();
        Set<String> names = rcache.smembers(cacheNameSet);
        if(CollectionUtils.isNotEmpty(names)){
            for (String name:names) {
                RedisCache cache = new RedisCache(cachePrefix+name, rcache);
                caches.add(cache);
            }
        }
        return caches;
    }
    
    
    @Override
    protected Cache getMissingCache(String name) {
        String  cacheName = cachePrefix+name;
        rcache.sadd(cacheNameSet, cacheName);
        RedisCache cache = new RedisCache(cacheName, rcache);
        return cache;
    }
    
}

Cache的实现

import java.util.concurrent.Callable;

import org.springframework.cache.support.AbstractValueAdaptingCache;
import org.springframework.util.Assert;

import com.study.demo.util.RedisUtil;

/**
 * 缓存实现
 * 这个结构的缓存是不支持数据过期的
 * @author lisuo
 *
 */
public class RedisCache extends AbstractValueAdaptingCache{
    
    private final String name;
    
    private RedisUtil rcache;
    
    public RedisCache(String name,RedisUtil rcache) {
        super(true);
        Assert.notNull(name, "Name must not be null");
        Assert.notNull(rcache, "Cache must not be null");
        this.name = name;
        this.rcache = rcache;
    }

    @Override
    public final String getName() {
        return this.name;
    }

    @Override
    public Object getNativeCache() {
        return this.rcache;
    }

    @Override
    public ValueWrapper get(Object key) {
        String v = rcache.hget(name, ObjStringConverUtil.objToString(key));
        if(v!=null){
            Object value = ObjStringConverUtil.stringToObj(v);
            ValueWrapper valueWrapper = toValueWrapper(value);
            return valueWrapper;
        }
        return null;
    }
    
    @SuppressWarnings("unchecked")
    @Override
    public <T> T get(Object key, Callable<T> valueLoader) {
        Object v = this.lookup(key);
        if(v!=null){
            return (T) v;
        }
        else {
            T value;
            try {
                value = valueLoader.call();
            }
            catch (Exception ex) {
                throw new ValueRetrievalException(key, valueLoader, ex);
            }
            put(key, value);
            return value;
        }
        
    }

    @Override
    public void put(Object key, Object value) {
        rcache.hset(name, ObjStringConverUtil.objToString(key), ObjStringConverUtil.objToString(value));
    }

    @Override
    public ValueWrapper putIfAbsent(Object key, Object value) {
        String k = ObjStringConverUtil.objToString(key);
        Boolean hexists = rcache.hexists(name, k);
        if(hexists){
            String v = rcache.hget(name, k);
            if(v!=null){
                ValueWrapper valueWrapper = toValueWrapper(ObjStringConverUtil.stringToObj(v));
                return valueWrapper;
            }
        }
        String val = ObjStringConverUtil.objToString(value);
        rcache.hset(name, k, val);
        return toValueWrapper(value);
    }

    @Override
    public void evict(Object key) {
        String k = ObjStringConverUtil.objToString(key);
        rcache.hdel(name, k);
    }

    @Override
    public void clear() {
        rcache.del(name);
    }

    @Override
    protected Object lookup(Object key) {
        String v = rcache.hget(name, ObjStringConverUtil.objToString(key));
        if(v!=null){
            Object value = ObjStringConverUtil.stringToObj(v);
            return value;
        }
        return null;
    }

}

对象转换字符工具类

import java.io.Serializable;

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.lang3.SerializationUtils;

/**
 * 对象字符串互转工具类
 * 序列化+Base64实现
 * @author lisuo
 *
 */
public class ObjStringConverUtil {
    
    /**
     * 对象转字符串
     * @param obj
     * @return
     */
    public static String objToString(Object obj){
        byte[] bs = SerializationUtils.serialize((Serializable) obj);
        return Base64.encodeBase64String(bs);
    }
    
    /**
     * 字符串转对象
     * @param str
     * @return
     */
    public static Object stringToObj(String str){
        byte[] bs = Base64.decodeBase64(str);
        Object obj = SerializationUtils.deserialize(bs);
        return obj;
    }
}

Redis操作工具类

关于Redis的工具类代码比较多

具体使用介绍参看:https://my.oschina.net/lis1314/blog/881704

package com.study.demo.util;

import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

import redis.clients.jedis.BinaryClient.LIST_POSITION;
import redis.clients.jedis.BitPosParams;
import redis.clients.jedis.GeoCoordinate;
import redis.clients.jedis.GeoRadiusResponse;
import redis.clients.jedis.GeoUnit;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisCluster;
import redis.clients.jedis.JedisCommands;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.ScanParams;
import redis.clients.jedis.ScanResult;
import redis.clients.jedis.SortingParams;
import redis.clients.jedis.Tuple;
import redis.clients.jedis.params.geo.GeoRadiusParam;
import redis.clients.jedis.params.sortedset.ZAddParams;
import redis.clients.jedis.params.sortedset.ZIncrByParams;

/**
 * Jedis 操作工具类
 * 
 * @version 基于Jedis 2.9.0
 * @author lisuo
 *
 */
public class RedisUtil implements JedisCommands {

    // jedis连接池
    private JedisPool jedisPool;

    // jedis集群
    private JedisCluster jedisCluster;

    // 是否为集群,默认不是集群
    private boolean isCluster = false;

    /**
     * 连接池构建方式
     * @param jedisPool  jedis连接池
     */
    public RedisUtil(JedisPool jedisPool) {
        this.jedisPool = jedisPool;
    }

    /**
     * 集群构建方式
     * @param jedisCluster jedis集群实例
     */
    public RedisUtil(JedisCluster jedisCluster) {
        this.jedisCluster = jedisCluster;
        isCluster = true;
    }

    // -----------------------------------实现脚本命令-----------------------------------
    public Object eval(String script, int keyCount, String... params) {
        if (isCluster) {
            return jedisCluster.eval(script, keyCount, params);
        } else {
            Jedis jedis = jedisPool.getResource();
            try {
                return jedis.eval(script, keyCount, params);
            } finally {
                jedis.close();
            }
        }
    }

    public Object eval(String script, List<String> keys, List<String> args) {
        if (isCluster) {
            return jedisCluster.eval(script, keys, args);
        } else {
            Jedis jedis = jedisPool.getResource();
            try {
                return jedis.eval(script, keys, args);
            } finally {
                jedis.close();
            }
        }
    }

    public Object evalsha(String sha1, int keyCount, String... params) {
        if (isCluster) {
            return jedisCluster.evalsha(sha1, keyCount, params);
        } else {
            Jedis jedis = jedisPool.getResource();
            try {
                return jedis.evalsha(sha1, keyCount, params);
            } finally {
                jedis.close();
            }
        }
    }

    /**
     * 获取JedisCommands实例
     * @return JedisCommands
     */
    private JedisCommands getJedisCommands() {
        if (isCluster) {
            return jedisCluster;
        } else {
            return jedisPool.getResource();
        }
    }

    /**
     * Callback 回调接口
     * @param <T>
     */
    public interface Callback<T> {
        /**
         * 回调函数
         * @param commands
         * @return
         */
        public T call(JedisCommands commands);
    }

    /**
     * 执行Redis 命令
     * @param callback 回调接口
     * @return
     */
    public <T> T execute(Callback<T> callback) {
        JedisCommands jedisCommands = getJedisCommands();
        try {
            return callback.call(jedisCommands);
        } finally {
            // 非集群下释放资源,集群源码中已实现释放资源
            if (!isCluster) {
                ((Jedis) jedisCommands).close();
            }
        }
    }

    // 实现JedisCommands,关于@Deprecated标记的方法参看Jedis API,如果报错可能是版本过高,一些方法被废除
    @Override
    public String get(final String key) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.get(key);
            }
        });
    }

    @Override
    public String set(final String key, final String value) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.set(key, value);
            }
        });
    }

    @Override
    public Long sadd(final String key, final String... member) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.sadd(key, member);
            }
        });
    }

    @Override
    public Long srem(final String key, final String... member) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.srem(key, member);
            }
        });
    }

    @Override
    public Boolean sismember(final String key, final String member) {
        return execute(new Callback<Boolean>() {
            @Override
            public Boolean call(JedisCommands commands) {
                return commands.sismember(key, member);
            }
        });
    }

    @Override
    public String hget(final String key, final String field) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.hget(key, field);
            }
        });
    }

    @Override
    public String hmset(final String key, final Map<String, String> hash) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.hmset(key, hash);
            }
        });
    }

    @Override
    public Long hset(final String key, final String field, final String value) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.hset(key, field, value);
            }
        });
    }

    @Override
    public Long lpush(final String key, final String... string) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.lpush(key, string);
            }
        });
    }

    @Override
    public String lpop(final String key) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.lpop(key);
            }
        });
    }

    @Override
    public String set(final String key, final String value, final String nxxx, final String expx, final long time) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.set(key, value, nxxx, expx, time);
            }
        });
    }

    @Override
    public String set(final String key, final String value, final String nxxx) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.set(key, value, nxxx);
            }
        });
    }

    @Override
    public Boolean exists(final String key) {
        return execute(new Callback<Boolean>() {
            @Override
            public Boolean call(JedisCommands commands) {
                return commands.exists(key);
            }
        });
    }

    @Override
    public Long persist(final String key) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.persist(key);
            }
        });
    }

    @Override
    public String type(final String key) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.type(key);
            }
        });
    }

    @Override
    public Long expire(final String key, final int seconds) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.expire(key, seconds);
            }
        });
    }

    @Override
    public Long pexpire(final String key, final long milliseconds) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.pexpire(key, milliseconds);
            }
        });
    }

    @Override
    public Long expireAt(final String key, final long unixTime) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.expireAt(key, unixTime);
            }
        });
    }

    @Override
    public Long pexpireAt(final String key, final long millisecondsTimestamp) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.pexpireAt(key, millisecondsTimestamp);
            }
        });
    }

    @Override
    public Long ttl(final String key) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.ttl(key);
            }
        });
    }

    @Override
    public Long pttl(final String key) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.pttl(key);
            }
        });
    }

    @Override
    public Boolean setbit(final String key, final long offset, final boolean value) {
        return execute(new Callback<Boolean>() {
            @Override
            public Boolean call(JedisCommands commands) {
                return commands.setbit(key, offset, value);
            }
        });
    }

    @Override
    public Boolean setbit(final String key, final long offset, final String value) {
        return execute(new Callback<Boolean>() {
            @Override
            public Boolean call(JedisCommands commands) {
                return commands.setbit(key, offset, value);
            }
        });
    }

    @Override
    public Boolean getbit(final String key, final long offset) {
        return execute(new Callback<Boolean>() {
            @Override
            public Boolean call(JedisCommands commands) {
                return commands.getbit(key, offset);
            }
        });
    }

    @Override
    public Long setrange(final String key, final long offset, final String value) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.setrange(key, offset, value);
            }
        });
    }

    @Override
    public String getrange(final String key, final long startOffset, final long endOffset) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.getrange(key, startOffset, endOffset);
            }
        });
    }

    @Override
    public String getSet(final String key, final String value) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.getSet(key, value);
            }
        });
    }

    @Override
    public Long setnx(final String key, final String value) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.setnx(key, value);
            }
        });
    }

    @Override
    public String setex(final String key, final int seconds, final String value) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.setex(key, seconds, value);
            }
        });
    }

    @Override
    public String psetex(final String key, final long milliseconds, final String value) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.psetex(key, milliseconds, value);
            }
        });
    }

    @Override
    public Long decrBy(final String key, final long integer) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.decrBy(key, integer);
            }
        });
    }

    @Override
    public Long decr(final String key) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.decr(key);
            }
        });
    }

    @Override
    public Long incrBy(final String key, final long integer) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.incrBy(key, integer);
            }
        });
    }

    @Override
    public Double incrByFloat(final String key, final double value) {
        return execute(new Callback<Double>() {
            @Override
            public Double call(JedisCommands commands) {
                return commands.incrByFloat(key, value);
            }
        });
    }

    @Override
    public Long incr(final String key) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.incr(key);
            }
        });
    }

    @Override
    public Long append(final String key, final String value) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.append(key, value);
            }
        });
    }

    @Override
    public String substr(final String key, final int start, final int end) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.substr(key, start, end);
            }
        });
    }

    @Override
    public Long hsetnx(final String key, final String field, final String value) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.hsetnx(key, field, value);
            }
        });
    }

    @Override
    public List<String> hmget(final String key, final String... fields) {
        return execute(new Callback<List<String>>() {
            @Override
            public List<String> call(JedisCommands commands) {
                return commands.hmget(key, fields);
            }
        });
    }

    @Override
    public Long hincrBy(final String key, final String field, final long value) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.hincrBy(key, field, value);
            }
        });
    }

    @Override
    public Double hincrByFloat(final String key, final String field, final double value) {
        return execute(new Callback<Double>() {
            @Override
            public Double call(JedisCommands commands) {
                return commands.hincrByFloat(key, field, value);
            }
        });
    }

    @Override
    public Boolean hexists(final String key, final String field) {
        return execute(new Callback<Boolean>() {
            @Override
            public Boolean call(JedisCommands commands) {
                return commands.hexists(key, field);
            }
        });
    }

    @Override
    public Long hdel(final String key, final String... field) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.hdel(key, field);
            }
        });
    }

    @Override
    public Long hlen(final String key) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.hlen(key);
            }
        });
    }

    @Override
    public Set<String> hkeys(final String key) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.hkeys(key);
            }
        });
    }

    @Override
    public List<String> hvals(final String key) {
        return execute(new Callback<List<String>>() {
            @Override
            public List<String> call(JedisCommands commands) {
                return commands.hvals(key);
            }
        });
    }

    @Override
    public Map<String, String> hgetAll(final String key) {
        return execute(new Callback<Map<String, String>>() {
            @Override
            public Map<String, String> call(JedisCommands commands) {
                return commands.hgetAll(key);
            }
        });
    }

    @Override
    public Long rpush(final String key, final String... string) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.rpush(key, string);
            }
        });
    }

    @Override
    public Long llen(final String key) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.llen(key);
            }
        });
    }

    @Override
    public List<String> lrange(final String key, final long start, final long end) {
        return execute(new Callback<List<String>>() {
            @Override
            public List<String> call(JedisCommands commands) {
                return commands.lrange(key, start, end);
            }
        });
    }

    @Override
    public String ltrim(final String key, final long start, final long end) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.ltrim(key, start, end);
            }
        });
    }

    @Override
    public String lindex(final String key, final long index) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.lindex(key, index);
            }
        });
    }

    @Override
    public String lset(final String key, final long index, final String value) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.lset(key, index, value);
            }
        });
    }

    @Override
    public Long lrem(final String key, final long count, final String value) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.lrem(key, count, value);
            }
        });
    }

    @Override
    public String rpop(final String key) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.rpop(key);
            }
        });
    }

    @Override
    public Set<String> smembers(final String key) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.smembers(key);
            }
        });
    }

    @Override
    public String spop(final String key) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.spop(key);
            }
        });
    }

    @Override
    public Set<String> spop(final String key, final long count) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.spop(key, count);
            }
        });
    }

    @Override
    public Long scard(final String key) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.scard(key);
            }
        });
    }

    @Override
    public String srandmember(final String key) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.srandmember(key);
            }
        });
    }

    @Override
    public List<String> srandmember(final String key, final int count) {
        return execute(new Callback<List<String>>() {
            @Override
            public List<String> call(JedisCommands commands) {
                return commands.srandmember(key, count);
            }
        });
    }

    @Override
    public Long strlen(final String key) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.strlen(key);
            }
        });
    }

    @Override
    public Long zadd(final String key, final double score, final String member) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.zadd(key, score, member);
            }
        });
    }

    @Override
    public Long zadd(final String key, final double score, final String member, final ZAddParams params) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.zadd(key, score, member, params);
            }
        });
    }

    @Override
    public Long zadd(final String key, final Map<String, Double> scoreMembers) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.zadd(key, scoreMembers);
            }
        });
    }

    @Override
    public Long zadd(final String key, final Map<String, Double> scoreMembers, final ZAddParams params) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.zadd(key, scoreMembers, params);
            }
        });
    }

    @Override
    public Set<String> zrange(final String key, final long start, final long end) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.zrange(key, start, end);
            }
        });
    }

    @Override
    public Long zrem(final String key, final String... member) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.zrem(key, member);
            }
        });
    }

    @Override
    public Double zincrby(final String key, final double score, final String member) {
        return execute(new Callback<Double>() {
            @Override
            public Double call(JedisCommands commands) {
                return commands.zincrby(key, score, member);
            }
        });
    }

    @Override
    public Double zincrby(final String key, final double score, final String member, final ZIncrByParams params) {
        return execute(new Callback<Double>() {
            @Override
            public Double call(JedisCommands commands) {
                return commands.zincrby(key, score, member, params);
            }
        });
    }

    @Override
    public Long zrank(final String key, final String member) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.zrank(key, member);
            }
        });
    }

    @Override
    public Long zrevrank(final String key, final String member) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.zrevrank(key, member);
            }
        });
    }

    @Override
    public Set<String> zrevrange(final String key, final long start, final long end) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.zrevrange(key, start, end);
            }
        });
    }

    @Override
    public Set<Tuple> zrangeWithScores(final String key, final long start, final long end) {
        return execute(new Callback<Set<Tuple>>() {
            @Override
            public Set<Tuple> call(JedisCommands commands) {
                return commands.zrangeWithScores(key, start, end);
            }
        });
    }

    @Override
    public Set<Tuple> zrevrangeWithScores(final String key, final long start, final long end) {
        return execute(new Callback<Set<Tuple>>() {
            @Override
            public Set<Tuple> call(JedisCommands commands) {
                return commands.zrevrangeWithScores(key, start, end);
            }
        });
    }

    @Override
    public Long zcard(final String key) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.zcard(key);
            }
        });
    }

    @Override
    public Double zscore(final String key, final String member) {
        return execute(new Callback<Double>() {
            @Override
            public Double call(JedisCommands commands) {
                return commands.zscore(key, member);
            }
        });
    }

    @Override
    public List<String> sort(final String key) {
        return execute(new Callback<List<String>>() {
            @Override
            public List<String> call(JedisCommands commands) {
                return commands.sort(key);
            }
        });
    }

    @Override
    public List<String> sort(final String key, final SortingParams sortingParameters) {
        return execute(new Callback<List<String>>() {
            @Override
            public List<String> call(JedisCommands commands) {
                return commands.sort(key, sortingParameters);
            }
        });
    }

    @Override
    public Long zcount(final String key, final double min, final double max) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.zcount(key, min, max);
            }
        });
    }

    @Override
    public Long zcount(final String key, final String min, final String max) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.zcount(key, min, max);
            }
        });
    }

    @Override
    public Set<String> zrangeByScore(final String key, final double min, final double max) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.zrangeByScore(key, min, max);
            }
        });
    }

    @Override
    public Set<String> zrangeByScore(final String key, final String min, final String max) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.zrangeByScore(key, min, max);
            }
        });
    }

    @Override
    public Set<String> zrevrangeByScore(final String key, final double max, final double min) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.zrevrangeByScore(key, max, min);
            }
        });
    }

    @Override
    public Set<String> zrangeByScore(final String key, final double min, final double max, final int offset,
            final int count) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.zrangeByScore(key, min, max, offset, count);
            }
        });
    }

    @Override
    public Set<String> zrevrangeByScore(final String key, final String max, final String min) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.zrevrangeByScore(key, max, min);
            }
        });
    }

    @Override
    public Set<String> zrangeByScore(final String key, final String min, final String max, final int offset,
            final int count) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.zrangeByScore(key, min, max, offset, count);
            }
        });
    }

    @Override
    public Set<String> zrevrangeByScore(final String key, final double max, final double min, final int offset,
            final int count) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.zrevrangeByScore(key, max, min, offset, count);
            }
        });
    }

    @Override
    public Set<Tuple> zrangeByScoreWithScores(final String key, final double min, final double max) {
        return execute(new Callback<Set<Tuple>>() {
            @Override
            public Set<Tuple> call(JedisCommands commands) {
                return commands.zrangeByScoreWithScores(key, min, max);
            }
        });
    }

    @Override
    public Set<Tuple> zrevrangeByScoreWithScores(final String key, final double max, final double min) {
        return execute(new Callback<Set<Tuple>>() {
            @Override
            public Set<Tuple> call(JedisCommands commands) {
                return commands.zrevrangeByScoreWithScores(key, max, min);
            }
        });
    }

    @Override
    public Set<Tuple> zrangeByScoreWithScores(final String key, final double min, final double max, final int offset,
            final int count) {
        return execute(new Callback<Set<Tuple>>() {
            @Override
            public Set<Tuple> call(JedisCommands commands) {
                return commands.zrangeByScoreWithScores(key, min, max, offset, count);
            }
        });
    }

    @Override
    public Set<String> zrevrangeByScore(final String key, final String max, final String min, final int offset,
            final int count) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.zrevrangeByScore(key, max, min, offset, count);
            }
        });
    }

    @Override
    public Set<Tuple> zrangeByScoreWithScores(final String key, final String min, final String max) {
        return execute(new Callback<Set<Tuple>>() {
            @Override
            public Set<Tuple> call(JedisCommands commands) {
                return commands.zrangeByScoreWithScores(key, min, max);
            }
        });
    }

    @Override
    public Set<Tuple> zrevrangeByScoreWithScores(final String key, final String max, final String min) {
        return execute(new Callback<Set<Tuple>>() {
            @Override
            public Set<Tuple> call(JedisCommands commands) {
                return commands.zrevrangeByScoreWithScores(key, max, min);
            }
        });
    }

    @Override
    public Set<Tuple> zrangeByScoreWithScores(final String key, final String min, final String max, final int offset,
            final int count) {
        return execute(new Callback<Set<Tuple>>() {
            @Override
            public Set<Tuple> call(JedisCommands commands) {
                return commands.zrangeByScoreWithScores(key, min, max, offset, count);
            }
        });
    }

    @Override
    public Set<Tuple> zrevrangeByScoreWithScores(final String key, final double max, final double min, final int offset,
            final int count) {
        return execute(new Callback<Set<Tuple>>() {
            @Override
            public Set<Tuple> call(JedisCommands commands) {
                return commands.zrevrangeByScoreWithScores(key, max, min, offset, count);
            }
        });
    }

    @Override
    public Set<Tuple> zrevrangeByScoreWithScores(final String key, final String max, final String min, final int offset,
            final int count) {
        return execute(new Callback<Set<Tuple>>() {
            @Override
            public Set<Tuple> call(JedisCommands commands) {
                return commands.zrevrangeByScoreWithScores(key, max, min, offset, count);
            }
        });
    }

    @Override
    public Long zremrangeByRank(final String key, final long start, final long end) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.zremrangeByRank(key, start, end);
            }
        });
    }

    @Override
    public Long zremrangeByScore(final String key, final double start, final double end) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.zremrangeByScore(key, start, end);
            }
        });
    }

    @Override
    public Long zremrangeByScore(final String key, final String start, final String end) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.zremrangeByScore(key, start, end);
            }
        });
    }

    @Override
    public Long zlexcount(final String key, final String min, final String max) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.zlexcount(key, min, max);
            }
        });
    }

    @Override
    public Set<String> zrangeByLex(final String key, final String min, final String max) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.zrangeByLex(key, min, max);
            }
        });
    }

    @Override
    public Set<String> zrangeByLex(final String key, final String min, final String max, final int offset,
            final int count) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.zrangeByLex(key, min, max, offset, count);
            }
        });
    }

    @Override
    public Set<String> zrevrangeByLex(final String key, final String max, final String min) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.zrevrangeByLex(key, max, min);
            }
        });
    }

    @Override
    public Set<String> zrevrangeByLex(final String key, final String max, final String min, final int offset,
            final int count) {
        return execute(new Callback<Set<String>>() {
            @Override
            public Set<String> call(JedisCommands commands) {
                return commands.zrevrangeByLex(key, max, min, offset, count);
            }
        });
    }

    @Override
    public Long zremrangeByLex(final String key, final String min, final String max) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.zremrangeByLex(key, min, max);
            }
        });
    }

    @Override
    public Long linsert(final String key, final LIST_POSITION where, final String pivot, final String value) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.linsert(key, where, pivot, value);
            }
        });
    }

    @Override
    public Long lpushx(final String key, final String... string) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.lpushx(key, string);
            }
        });
    }

    @Override
    public Long rpushx(final String key, final String... string) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.rpushx(key, string);
            }
        });
    }

    @Deprecated
    @Override
    public List<String> blpop(final String arg) {
        return execute(new Callback<List<String>>() {
            @Override
            public List<String> call(JedisCommands commands) {
                return commands.blpop(arg);
            }
        });
    }

    @Override
    public List<String> blpop(final int timeout, final String key) {
        return execute(new Callback<List<String>>() {
            @Override
            public List<String> call(JedisCommands commands) {
                return commands.blpop(timeout, key);
            }
        });
    }

    @Deprecated
    @Override
    public List<String> brpop(final String arg) {
        return execute(new Callback<List<String>>() {
            @Override
            public List<String> call(JedisCommands commands) {
                return commands.brpop(arg);
            }
        });
    }

    @Override
    public List<String> brpop(final int timeout, final String key) {
        return execute(new Callback<List<String>>() {
            @Override
            public List<String> call(JedisCommands commands) {
                return commands.brpop(timeout, key);
            }
        });
    }

    @Override
    public Long del(final String key) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.del(key);
            }
        });
    }

    @Override
    public String echo(final String string) {
        return execute(new Callback<String>() {
            @Override
            public String call(JedisCommands commands) {
                return commands.echo(string);
            }
        });
    }

    @Override
    public Long move(final String key, final int dbIndex) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.move(key, dbIndex);
            }
        });
    }

    @Override
    public Long bitcount(final String key) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.bitcount(key);
            }
        });
    }

    @Override
    public Long bitcount(final String key, final long start, final long end) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.bitcount(key, start, end);
            }
        });
    }

    @Override
    public Long bitpos(final String key, final boolean value) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.bitpos(key, value);
            }
        });
    }

    @Override
    public Long bitpos(final String key, final boolean value, final BitPosParams params) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.bitpos(key, value, params);
            }
        });
    }

    @Deprecated
    @Override
    public ScanResult<Entry<String, String>> hscan(final String key, final int cursor) {
        return execute(new Callback<ScanResult<Entry<String, String>>>() {
            @Override
            public ScanResult<Entry<String, String>> call(JedisCommands commands) {
                return commands.hscan(key, cursor);
            }
        });
    }

    @Deprecated
    @Override
    public ScanResult<String> sscan(final String key, final int cursor) {
        return execute(new Callback<ScanResult<String>>() {
            @Override
            public ScanResult<String> call(JedisCommands commands) {
                return commands.sscan(key, cursor);
            }
        });
    }

    @Deprecated
    @Override
    public ScanResult<Tuple> zscan(final String key, final int cursor) {
        return execute(new Callback<ScanResult<Tuple>>() {
            @Override
            public ScanResult<Tuple> call(JedisCommands commands) {
                return commands.zscan(key, cursor);
            }
        });
    }

    @Override
    public ScanResult<Entry<String, String>> hscan(final String key, final String cursor) {
        return execute(new Callback<ScanResult<Entry<String, String>>>() {
            @Override
            public ScanResult<Entry<String, String>> call(JedisCommands commands) {
                return commands.hscan(key, cursor);
            }
        });
    }

    @Override
    public ScanResult<Entry<String, String>> hscan(final String key, final String cursor, final ScanParams params) {
        return execute(new Callback<ScanResult<Entry<String, String>>>() {
            @Override
            public ScanResult<Entry<String, String>> call(JedisCommands commands) {
                return commands.hscan(key, cursor, params);
            }
        });
    }

    @Override
    public ScanResult<String> sscan(final String key, final String cursor) {
        return execute(new Callback<ScanResult<String>>() {
            @Override
            public ScanResult<String> call(JedisCommands commands) {
                return commands.sscan(key, cursor);
            }
        });
    }

    @Override
    public ScanResult<String> sscan(final String key, final String cursor, final ScanParams params) {
        return execute(new Callback<ScanResult<String>>() {
            @Override
            public ScanResult<String> call(JedisCommands commands) {
                return commands.sscan(key, cursor, params);
            }
        });
    }

    @Override
    public ScanResult<Tuple> zscan(final String key, final String cursor) {
        return execute(new Callback<ScanResult<Tuple>>() {
            @Override
            public ScanResult<Tuple> call(JedisCommands commands) {
                return commands.zscan(key, cursor);
            }
        });
    }

    @Override
    public ScanResult<Tuple> zscan(final String key, final String cursor, final ScanParams params) {
        return execute(new Callback<ScanResult<Tuple>>() {
            @Override
            public ScanResult<Tuple> call(JedisCommands commands) {
                return commands.zscan(key, cursor, params);
            }
        });
    }

    @Override
    public Long pfadd(final String key, final String... elements) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.pfadd(key, elements);
            }
        });
    }

    @Override
    public long pfcount(final String key) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.pfcount(key);
            }
        });
    }

    @Override
    public Long geoadd(final String key, final double longitude, final double latitude, final String member) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.geoadd(key, longitude, latitude, member);
            }
        });
    }

    @Override
    public Long geoadd(final String key, final Map<String, GeoCoordinate> memberCoordinateMap) {
        return execute(new Callback<Long>() {
            @Override
            public Long call(JedisCommands commands) {
                return commands.geoadd(key, memberCoordinateMap);
            }
        });
    }

    @Override
    public Double geodist(final String key, final String member1, final String member2) {
        return execute(new Callback<Double>() {
            @Override
            public Double call(JedisCommands commands) {
                return commands.geodist(key, member1, member2);
            }
        });
    }

    @Override
    public Double geodist(final String key, final String member1, final String member2, final GeoUnit unit) {
        return execute(new Callback<Double>() {
            @Override
            public Double call(JedisCommands commands) {
                return commands.geodist(key, member1, member2, unit);
            }
        });
    }

    @Override
    public List<String> geohash(final String key, final String... members) {
        return execute(new Callback<List<String>>() {
            @Override
            public List<String> call(JedisCommands commands) {
                return commands.geohash(key, members);
            }
        });
    }

    @Override
    public List<GeoCoordinate> geopos(final String key, final String... members) {
        return execute(new Callback<List<GeoCoordinate>>() {
            @Override
            public List<GeoCoordinate> call(JedisCommands commands) {
                return commands.geopos(key, members);
            }
        });
    }

    @Override
    public List<GeoRadiusResponse> georadius(final String key, final double longitude, final double latitude,
            final double radius, final GeoUnit unit) {
        return execute(new Callback<List<GeoRadiusResponse>>() {
            @Override
            public List<GeoRadiusResponse> call(JedisCommands commands) {
                return commands.georadius(key, longitude, latitude, radius, unit);
            }
        });
    }

    @Override
    public List<GeoRadiusResponse> georadius(final String key, final double longitude, final double latitude,
            final double radius, final GeoUnit unit, final GeoRadiusParam param) {
        return execute(new Callback<List<GeoRadiusResponse>>() {
            @Override
            public List<GeoRadiusResponse> call(JedisCommands commands) {
                return commands.georadius(key, longitude, latitude, radius, unit, param);
            }
        });
    }

    @Override
    public List<GeoRadiusResponse> georadiusByMember(final String key, final String member, final double radius,
            final GeoUnit unit) {
        return execute(new Callback<List<GeoRadiusResponse>>() {
            @Override
            public List<GeoRadiusResponse> call(JedisCommands commands) {
                return commands.georadiusByMember(key, member, radius, unit);
            }
        });
    }

    @Override
    public List<GeoRadiusResponse> georadiusByMember(final String key, final String member, final double radius,
            final GeoUnit unit, final GeoRadiusParam param) {
        return execute(new Callback<List<GeoRadiusResponse>>() {
            @Override
            public List<GeoRadiusResponse> call(JedisCommands commands) {
                return commands.georadiusByMember(key, member, radius, unit, param);
            }
        });
    }

    @Override
    public List<Long> bitfield(final String key, final String... arguments) {
        return execute(new Callback<List<Long>>() {
            @Override
            public List<Long> call(JedisCommands commands) {
                return commands.bitfield(key, arguments);
            }
        });
    }

}

整合配置:Redis配置

package com.study.demo.configuration;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.study.demo.util.RedisUtil;

import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

/**
 * Redis 配置(单点)
 * @author lisuo
 *
 */
@Configuration
public class RedisConfiguration {

    @Bean(name = "redisPool")
    public JedisPool jedisPool(@Autowired @Qualifier("redisPoolConfig") JedisPoolConfig config,
            @Value("${redis.host1}") String host, @Value("${redis.port}") int port) {
        return new JedisPool(config, host, port);
    }

    @Bean(name = "redisPoolConfig")
    public JedisPoolConfig jedisPoolConfig(@Value("${redis.pool.maxIdle}") int maxTotal,
            @Value("${redis.pool.maxIdle}") int maxIdle, @Value("${redis.pool.maxWaitMillis}") int maxWaitMillis) {
        JedisPoolConfig config = new JedisPoolConfig();
        config.setMaxTotal(maxTotal);
        config.setMaxIdle(maxIdle);
        config.setMaxWaitMillis(maxWaitMillis);
        return config;
    }

    @Bean(name = "redisUtil")
    public RedisUtil redisUtil(@Autowired @Qualifier("redisPool") JedisPool jedisPool) {
        RedisUtil config = new RedisUtil(jedisPool);
        return config;
    }

}

缓存整合配置

package com.study.demo.configuration;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Configuration;

import com.study.demo.cache.DefaultKeyGenerator;
import com.study.demo.cache.RedisCacheManager;
import com.study.demo.util.RedisUtil;

@Configuration
@EnableCaching
public class SpringCacheConfiguraction extends CachingConfigurerSupport{
    
    @Autowired
    private RedisUtil redisUtil;
    
    @Override
    public CacheManager cacheManager() {
        RedisCacheManager manager = new RedisCacheManager(redisUtil, "study:cache:", "study:cacheNameSet");
        return manager;
    }

    @Override
    public KeyGenerator keyGenerator() {
        return new DefaultKeyGenerator();
    }

    
    
}
点赞
收藏
评论区
推荐文章
blmius blmius
3年前
MySQL:[Err] 1292 - Incorrect datetime value: ‘0000-00-00 00:00:00‘ for column ‘CREATE_TIME‘ at row 1
文章目录问题用navicat导入数据时,报错:原因这是因为当前的MySQL不支持datetime为0的情况。解决修改sql\mode:sql\mode:SQLMode定义了MySQL应支持的SQL语法、数据校验等,这样可以更容易地在不同的环境中使用MySQL。全局s
Easter79 Easter79
3年前
swap空间的增减方法
(1)增大swap空间去激活swap交换区:swapoff v /dev/vg00/lvswap扩展交换lv:lvextend L 10G /dev/vg00/lvswap重新生成swap交换区:mkswap /dev/vg00/lvswap激活新生成的交换区:swapon v /dev/vg00/lvswap
皕杰报表之UUID
​在我们用皕杰报表工具设计填报报表时,如何在新增行里自动增加id呢?能新增整数排序id吗?目前可以在新增行里自动增加id,但只能用uuid函数增加UUID编码,不能新增整数排序id。uuid函数说明:获取一个UUID,可以在填报表中用来创建数据ID语法:uuid()或uuid(sep)参数说明:sep布尔值,生成的uuid中是否包含分隔符'',缺省为
待兔 待兔
5个月前
手写Java HashMap源码
HashMap的使用教程HashMap的使用教程HashMap的使用教程HashMap的使用教程HashMap的使用教程22
Jacquelyn38 Jacquelyn38
3年前
2020年前端实用代码段,为你的工作保驾护航
有空的时候,自己总结了几个代码段,在开发中也经常使用,谢谢。1、使用解构获取json数据let jsonData  id: 1,status: "OK",data: 'a', 'b';let  id, status, data: number   jsonData;console.log(id, status, number )
Stella981 Stella981
3年前
SpringBoot使用RedisTemplate操作Redis时,key值出现 -xac-xed-x00-x05t-x00-tb
原因分析原因与RedisTemplate源码中的默认序列化方式有关defaultSerializernewJdkSerializationRedisSerializer(classLoader!null?classLoader:this.getClass().getClassLoader()
Easter79 Easter79
3年前
Twitter的分布式自增ID算法snowflake (Java版)
概述分布式系统中,有一些需要使用全局唯一ID的场景,这种时候为了防止ID冲突可以使用36位的UUID,但是UUID有一些缺点,首先他相对比较长,另外UUID一般是无序的。有些时候我们希望能使用一种简单一些的ID,并且希望ID能够按照时间有序生成。而twitter的snowflake解决了这种需求,最初Twitter把存储系统从MySQL迁移
Stella981 Stella981
3年前
JS 对象数组Array 根据对象object key的值排序sort,很风骚哦
有个js对象数组varary\{id:1,name:"b"},{id:2,name:"b"}\需求是根据name或者id的值来排序,这里有个风骚的函数函数定义:function keysrt(key,desc) {  return function(a,b){    return desc ? ~~(ak
Stella981 Stella981
3年前
CAS 实现站内单点登录及实现第三方 OAuth、OpenId 登录(四)
一、OAuth配置1.配置OAuth提供商<bean id"weibo" class"com.buession.oauth.provider.impl.WeiboProvider"    <property name"key" value"the_key_for_
Easter79 Easter79
3年前
SpringBoot使用RedisTemplate操作Redis时,key值出现 -xac-xed-x00-x05t-x00-tb
原因分析原因与RedisTemplate源码中的默认序列化方式有关defaultSerializernewJdkSerializationRedisSerializer(classLoader!null?classLoader:this.getClass().getClassLoader()