EasyPOI的使用 - JavaShuo

EasyPOI：做用是对办公文件(word,excel.ppt)进行上传和下载，特色就是easyjavascript

maven项目导包：html


<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>java

官方文档:http://easypoi.mydoc.io/web

导出功能：

EasyPOI能够继承SpringMVCspring

扫描view和配置视图解析器数据库

<!--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浏览器

//员工数据导出
@RequestMapping("/export") public String exportEmployee(ModelMap map, EmployeeQuery query, HttpServletRequest request){ //经过高级查询拿数据
    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; }

导入功能缓存

<%@ 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> 上传必须如下载的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> 若是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缘由 </h4>
<h4> 若无提示，则表示上传成功 </h4>
</body>
</html>

导入后台app

//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(); //设置须要验证
    params.setNeedVerfiy(true); params.setHeadRows(1); //加入自定义验证
 params.setVerifyHandler(employeeExcelVerifyHandler); //得到excel但如的结果
    ExcelImportResult<Employee> result = ExcelImportUtil.importExcelMore( empFile.getInputStream(), Employee.class, params); //拿到正确的数据，而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); }); //若是有错误
    if(result.isVerfiyFail()) { //得到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dom

<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表明能够用
            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(); //设置须要验证
    params.setNeedVerfiy(true); params.setHeadRows(1); //加入自定义验证
 params.setVerifyHandler(employeeExcelVerifyHandler); //得到excel但如的结果
    ExcelImportResult<Employee> result = ExcelImportUtil.importExcelMore( empFile.getInputStream(), Employee.class, params); //拿到正确的数据，而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); }); //若是有错误
    if(result.isVerfiyFail()) { //得到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"; }