EasyPOI:作用是对办公文件(word,excel.ppt)进行上传和下载,特点就是easy
maven项目导包:
_
_<**dependency**>
<**groupId**>cn.afterturn</**groupId**>
<**artifactId**>easypoi-base</**artifactId**>
<**version**>3.2.0</**version**>
</**dependency**>
<**dependency**>
<**groupId**>cn.afterturn</**groupId**>
<**artifactId**>easypoi-web</**artifactId**>
<**version**>3.2.0</**version**>
</**dependency**>
<**dependency**>
<**groupId**>cn.afterturn</**groupId**>
<**artifactId**>easypoi-annotation</**artifactId**>
<**version**>3.2.0</**version**>
</**dependency**>
导出功能:
EasyPOI可以继承SpringMVC
扫描view和 配置视图解析器
<!--扫描excel的view包-->
<context:component-scan base-package="cn.afterturn.easypoi.view" />
<context:component-scan base-package="cn.king.aisell.common" />
<!--根据bean的名称去返回 p:order顺序在前面 -->
<bean id="beanNameViewResolver" class="org.springframework.web.servlet.view.BeanNameViewResolver"
p:order="0" />
准备前台页面和传入相应的查询数据
<form id="searchForm" method="post" action="/employee/export">
用户名: <input name="username" class="easyui-text" style="width:80px">
邮箱: <input name="email" class="easyui-text" style="width:80px">
部门:<input name="departmentId" class="easyui-combobox" name="dept" panelHeight="auto" style="width:120px"
data-options="valueField:'id',textField:'name',url:'/util/departmentList',editable:false"/>
<a href="javascript:;" data-cmd="search" class="easyui-linkbutton" iconCls="icon-search">搜索</a>
<a href="javascript:;" data-cmd="reset" class="easyui-linkbutton"
data-options="iconCls:'icon-reload'">重置</a>
<shiro:hasPermission name="employee:export">
<button class="easyui-linkbutton" iconCls="icon-print" plain="true">导出</button>
</shiro:hasPermission>
</form>
后台接收参数进行导出
//员工数据导出
@RequestMapping("/export")
public String exportEmployee(ModelMap map, EmployeeQuery query, HttpServletRequest request){
//通过高级查询拿数据
List<Employee> list = iEmployeeService.findByQuery(query);
//拿到员工头像路径
String realPath = request.getServletContext().getRealPath("");
list.forEach(e -> {
e.setHeadImage(realPath + e.getHeadImage());
});
//将从数据库中拿到的信息导出到前台
ExportParams params = new ExportParams("员工管理", "员工信息表", ExcelType.XSSF);
// 数据集合(导出的数据)
map.put(NormalExcelConstants.DATA_LIST, list);
//导出实体
map.put(NormalExcelConstants.CLASS, Employee.class);
//参数
map.put(NormalExcelConstants.PARAMS, params);
//文件名称
map.put(NormalExcelConstants.FILE_NAME, "员工信息表");
//View名称
return NormalExcelConstants.EASYPOI_EXCEL_VIEW;
}
导入功能
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>导入管理</title>
<jsp:include page="BaseUI.jsp"></jsp:include>
</head>
<body>
<form action="/import/employeeXlsx" method="post" enctype="multipart/form-data">
<input class="easyui-filebox" name="empFile" style="width:20%"
data-options="prompt:'选择一个文件...',buttonText: '选择文件'" />
<button class="easyui-linkbutton">导入</button>
</form>
<h3 style="color: red">上传说明</h3>
<h4>
上传必须以下载的excel格式为准
</h4>
<h4>
用户名不得为空值或重复得值
</h4>
<h4>
年龄应为20-80岁之间
</h4>
<h4>
如果上传的文件不符合要求
</h4>
<h4>
在上传提交后会出现上传失败文件,里面有上传失败的内容和原因
</h4>
<h4>
若无提示,则表示上传成功
</h4>
</body>
</html>
导入后台
//上传员工excel的功能
@RequestMapping("/employeeXlsx")
public String employeeXlsx(MultipartFile empFile, HttpServletResponse response) throws Exception{
//设置导入的参数
ImportParams params = new ImportParams();
//设置需要验证
params.setNeedVerfiy(true);
params.setHeadRows(1);
//加入自定义验证
params.setVerifyHandler(employeeExcelVerifyHandler);
//获得excel但如的结果
ExcelImportResult<Employee> result = ExcelImportUtil.importExcelMore(
empFile.getInputStream(),
Employee.class, params);
//拿到正确的数据,然后把它们保存到数据库
List<Employee> list = result.getList();
list.forEach(e ->{
//从数据库中查询部门
String deptName = e.getDepartmentId().getName();
Department dept = iDepartmentService.findByName(deptName);
e.setDepartmentId(dept);
//设置初始密码
String md5EncryptionByPassword = MD5EncryptionByPassword.MD_5_ENCRYPTION_BY_PASSWORD.getMD5EncryptionByPassword("123");
e.setPassword(md5EncryptionByPassword);
iEmployeeService.save(e);
});
//如果有错误
if(result.isVerfiyFail()) {
//获得Workbook对象,以返回失败文档
Workbook failWorkbook = result.getFailWorkbook();
//设置响应的文件类型
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
//attachment:不要用浏览器打开
response.setHeader("Content-disposition", "attachment;filename=empFail.xlsx");
//设置不要缓存
response.setHeader("Pragma", "No-cache");
OutputStream ouputStream = response.getOutputStream();
failWorkbook.write(ouputStream);
ouputStream.flush();
ouputStream.close();
}
return "importManage";
}
导入验证包
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.2.4.Final</version>
</dependency>
domain类加上验证的注解
@Excel(name = "用户名")
@NotNull(message = "用户名不为空")
private String username;
private String password;
@Excel(name = "邮箱",width = 20)
private String email;
@Excel(name = "头像",type = 2,height = 30)
private String headImage;
@Excel(name = "年龄")
@Max(value = 80,message = "年龄最大值不能超过80")
@Min(value = 20,message = "年龄最大值不能小于20")
private Integer age;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "department_id")
@ExcelEntity//导出的是实体对象
private Department departmentId;
加上自定义验证
扫描自定义验证的包
<context:component-scan base-package="cn.king.aisell.common" />
自定义验证功能
@Component
public class EmployeeExcelVerifyHandler implements IExcelVerifyHandler<Employee> {
@Autowired
private IEmployeeService iemployeeService;
@Override
public ExcelVerifyHandlerResult verifyHandler(Employee employee) {
//写逻辑验证用户名是否重复
boolean success = iemployeeService.checkName(employee.getUsername());
if(success){ //true代表可以用
return new ExcelVerifyHandlerResult(true);
}
return new ExcelVerifyHandlerResult(false,"用户名重复");
}
}
完成controller上传
//上传员工excel的功能
@RequestMapping("/employeeXlsx")
public String employeeXlsx(MultipartFile empFile, HttpServletResponse response) throws Exception{
//设置导入的参数
ImportParams params = new ImportParams();
//设置需要验证
params.setNeedVerfiy(true);
params.setHeadRows(1);
//加入自定义验证
params.setVerifyHandler(employeeExcelVerifyHandler);
//获得excel但如的结果
ExcelImportResult<Employee> result = ExcelImportUtil.importExcelMore(
empFile.getInputStream(),
Employee.class, params);
//拿到正确的数据,然后把它们保存到数据库
List<Employee> list = result.getList();
list.forEach(e ->{
//从数据库中查询部门
String deptName = e.getDepartmentId().getName();
Department dept = iDepartmentService.findByName(deptName);
e.setDepartmentId(dept);
//设置初始密码
String md5EncryptionByPassword = MD5EncryptionByPassword.MD_5_ENCRYPTION_BY_PASSWORD.getMD5EncryptionByPassword("123");
e.setPassword(md5EncryptionByPassword);
iEmployeeService.save(e);
});
//如果有错误
if(result.isVerfiyFail()) {
//获得Workbook对象,以返回失败文档
Workbook failWorkbook = result.getFailWorkbook();
//设置响应的文件类型
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
//attachment:不要用浏览器打开
response.setHeader("Content-disposition", "attachment;filename=empFail.xlsx");
//设置不要缓存
response.setHeader("Pragma", "No-cache");
OutputStream ouputStream = response.getOutputStream();
failWorkbook.write(ouputStream);
ouputStream.flush();
ouputStream.close();
}
return "importManage";
}