项目结构
1.引入maven依赖
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.10</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.2.2</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
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2.在application.properties配置文件中加入druid配置
### mysql ###
spring.datasource.url=jdbc:mysql://localhost:3306/lw_test?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
### mybatis ###
mybatis.mapper-locations=classpath:mybatis/*.xml
### durid ###
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
# 初始化大小,最小,最大
spring.datasource.initialSize=5
spring.datasource.minIdle=5
spring.datasource.maxActive=20
# 配置获取连接等待超时的时间
spring.datasource.maxWait=60000
# 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒
spring.datasource.timeBetweenEvictionRunsMillis=60000
# 配置一个连接在池中最小生存的时间,单位是毫秒
spring.datasource.minEvictableIdleTimeMillis=300000
# 校验SQL,Oracle配置 spring.datasource.validationQuery=SELECT 1 FROM DUAL,如果不配validationQuery项,则下面三项配置无用
spring.datasource.validationQuery=SELECT 'x'
spring.datasource.testWhileIdle=true
spring.datasource.testOnBorrow=false
spring.datasource.testOnReturn=false
# 打开PSCache,并且指定每个连接上PSCache的大小
spring.datasource.poolPreparedStatements=true
spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
# 配置监控统计拦截的filters,去掉后监控界面sql无法统计,'wall'用于防火墙
spring.datasource.filters=stat,wall,log4j
# 通过connectProperties属性来打开mergeSql功能;慢SQL记录
spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
# 合并多个DruidDataSource的监控数据
spring.datasource.useGlobalDataSourceStat=true
### log4j ###
log4j.rootLogger=DEBUG,Console
log4j.appender.Console=org.apache.log4j.ConsoleAppenderlog4j.appender.Console.layout=org.apache.log4j.PatternLayout
og4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
log4j.logger.org.apache=INFO
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3.配置webServlet
package com.lw.coodydruid.servlet;
import com.alibaba.druid.support.http.StatViewServlet;
import javax.servlet.annotation.WebInitParam;
import javax.servlet.annotation.WebServlet;
@WebServlet(urlPatterns = "/druid/*",
initParams = {
// @WebInitParam(name="allow",value="172.16.10.128,127.0.0.1"),// IP白名单 (没有配置或者为空,则允许所有访问)
// @WebInitParam(name="deny",value="172.16.10.129"),// IP黑名单 (存在共同时,deny优先于allow)
@WebInitParam(name = "loginUsername", value = "admin"),// 用户名
@WebInitParam(name = "loginPassword", value = "123456"),// 密码
@WebInitParam(name = "resetEnable", value = "false")// 禁用HTML页面上的“Reset All”功能
})
public class DruidServlet extends StatViewServlet {
private static final long serialVersionUID = 1L;
}
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4.配置webFitler
package com.lw.coodydruid.filter;
import com.alibaba.druid.support.http.WebStatFilter;
import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebInitParam;
@WebFilter(filterName = "druidWebStatFilter", urlPatterns = "/*",
initParams = {
@WebInitParam(name = "exclusions", value = "*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*") // 忽略资源
})
public class DruidFilter extends WebStatFilter {
}
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5.在springboot启动类上,加上注解@ServletComponentScan,扫描filter和servlet
package com.lw.coodydruid;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.context.annotation.ImportResource;
@SpringBootApplication
@ServletComponentScan
@ImportResource(locations = { "classpath:druid-bean.xml" })
public class CoodyDruidApplication {
public static void main(String[] args) {
SpringApplication.run(CoodyDruidApplication.class, args);
}
}
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6.此处为手动初始化DataSource,也可以采用****spring boot自动配置功能
package com.lw.coodydruid.configuration;
import com.alibaba.druid.pool.DruidDataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Primary;
import org.springframework.stereotype.Component;
import javax.sql.DataSource;
import java.sql.SQLException;
/**
* @Classname DruidConfigration
* @Description 手动初始化DataSource
* @Date 2019/11/5 8:48
* @Created by lw
*/
@Component
public class DruidConfigration {
@Value("${spring.datasource.url}")
private String dbUrl;
@Value("${spring.datasource.username}")
private String username;
@Value("${spring.datasource.password}")
private String password;
@Value("${spring.datasource.driver-class-name}")
private String driverClassName;
@Value("${spring.datasource.initialSize}")
private int initialSize;
@Value("${spring.datasource.minIdle}")
private int minIdle;
@Value("${spring.datasource.maxActive}")
private int maxActive;
@Value("${spring.datasource.maxWait}")
private int maxWait;
@Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
private int timeBetweenEvictionRunsMillis;
@Value("${spring.datasource.minEvictableIdleTimeMillis}")
private int minEvictableIdleTimeMillis;
@Value("${spring.datasource.validationQuery}")
private String validationQuery;
@Value("${spring.datasource.testWhileIdle}")
private boolean testWhileIdle;
@Value("${spring.datasource.testOnBorrow}")
private boolean testOnBorrow;
@Value("${spring.datasource.testOnReturn}")
private boolean testOnReturn;
@Value("${spring.datasource.poolPreparedStatements}")
private boolean poolPreparedStatements;
@Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}")
private int maxPoolPreparedStatementPerConnectionSize;
@Value("${spring.datasource.filters}")
private String filters;
@Value("${spring.datasource.connectionProperties}")
private String connectionProperties;
@Value("${spring.datasource.useGlobalDataSourceStat}")
private boolean useGlobalDataSourceStat;
@Bean
@Primary //在同样的DataSource中,首先使用被标注的DataSource
public DataSource dataSource() {
DruidDataSource datasource = new DruidDataSource();
datasource.setUrl(this.dbUrl);
datasource.setUsername(username);
datasource.setPassword(password);
datasource.setDriverClassName(driverClassName);
//configuration
datasource.setInitialSize(initialSize);
datasource.setMinIdle(minIdle);
datasource.setMaxActive(maxActive);
datasource.setMaxWait(maxWait);
datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
datasource.setValidationQuery(validationQuery);
datasource.setTestWhileIdle(testWhileIdle);
datasource.setTestOnBorrow(testOnBorrow);
datasource.setTestOnReturn(testOnReturn);
datasource.setPoolPreparedStatements(poolPreparedStatements);
datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
datasource.setUseGlobalDataSourceStat(useGlobalDataSourceStat);
try {
datasource.setFilters(filters);
} catch (SQLException e) {
System.err.println("druid configuration initialization filter: " + e);
}
datasource.setConnectionProperties(connectionProperties);
return datasource;
}
}
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7.spring监控之方法名正则匹配拦截配置druid-bean.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">
<!-- 配置_Druid和Spring关联监控配置 -->
<bean id="druid-stat-interceptor"
class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor"/>
<!-- 方法名正则匹配拦截配置 -->
<bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut"
scope="prototype">
<property name="patterns">
<list>
<value>com.lw.coodydruid.mapper.*</value>
</list>
</property>
</bean>
<aop:config proxy-target-class="true">
<aop:advisor advice-ref="druid-stat-interceptor" pointcut-ref="druid-stat-pointcut"/>
</aop:config>
</beans>
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8.在springboot启动类上,引入配置druid-bean.xml
@ImportResource(locations = { "classpath:druid-bean.xml" })
9.controller类
package com.lw.coodydruid.controller;
import com.lw.coodydruid.entity.User;
import com.lw.coodydruid.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
@RestController
@RequestMapping("/user")
public class UserController {
@Autowired
private UserMapper userMapper;
@GetMapping(value = "/get")
public User get() {
return userMapper.getById(1);
}
@GetMapping(value = "/list")
public List<User> list() {
return userMapper.getList();
}
}
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10.Mapper和mapper xml
package com.lw.coodydruid.mapper;
import com.lw.coodydruid.entity.User;
import org.apache.ibatis.annotations.Mapper;
import java.util.List;
@Mapper
public interface UserMapper {
public List<User> getList();
public User getById(int id);
}
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<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.lw.coodydruid.mapper.UserMapper">
<resultMap type="com.lw.coodydruid.entity.User" id="userMap">
<id column="id" property="id"/>
<result column="name" property="name"/>
<result column="sex" property="sex"/>
<result column="age" property="age"/>
<result column="address" property="address"/>
<result column="date_created" property="dateCreated"/>
</resultMap>
<select id="getList" resultMap="userMap">
select * from user
</select>
<select id="getById" parameterType="java.lang.Integer" resultMap="userMap">
select * from user where id=#{id}
</select>
</mapper>
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11.测试
- 1.启动springboot启动类,在浏览器上输入http://localhost:8080/druid/index.html,进入Druid登录页面
输入用户名和密码,点击Sign in登录
- 2.访问controller中的方法,http://localhost:8080/user/get![](https://img2018.cnblogs.com/i-beta/1645656/201912/1645656-20191218090353708-1001967800.png)
- 3.Druid监控页面---SQL监控
- 4.Druid监控页面---spring监控