EasyPOI的使用 - JavaShuo

EasyPOI：做用是對辦公文件(word,excel.ppt)進行上傳和下載，特色就是easyjavascript

maven項目導包：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

官方文檔:http://easypoi.mydoc.io/web

導出功能：

EasyPOI能夠繼承SpringMVCspring

掃描view和配置視圖解析器數據庫

<!--掃描excel的view包-->
<context:component-scan base-package="cn.afterturn.easypoi.view" />
<context:component-scan base-package="cn.king.aisell.common" />
<!--根據bean的名稱去返回  p:order順序在前面 -->
<bean id="beanNameViewResolver" class="org.springframework.web.servlet.view.BeanNameViewResolver" p:order="0" />

準備前臺頁面和傳入相應的查詢數據

<form id="searchForm" method="post" action="/employee/export"> 用戶名: <input name="username" class="easyui-text" style="width:80px"> 郵箱: <input name="email" class="easyui-text" style="width:80px"> 部門:<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">導出</button>
    </shiro:hasPermission>
</form>

後臺接收參數進行導出瀏覽器

//員工數據導出
@RequestMapping("/export") public String exportEmployee(ModelMap map, EmployeeQuery query, HttpServletRequest request){ //經過高級查詢拿數據
    List<Employee> list = iEmployeeService.findByQuery(query); //拿到員工頭像路徑
    String realPath  = request.getServletContext().getRealPath(""); list.forEach(e -> { e.setHeadImage(realPath + e.getHeadImage()); }); //將從數據庫中拿到的信息導出到前臺
    ExportParams params = new ExportParams("員工管理", "員工信息表", ExcelType.XSSF); // 數據集合(導出的數據)
 map.put(NormalExcelConstants.DATA_LIST, list); //導出實體
    map.put(NormalExcelConstants.CLASS, Employee.class); //參數
 map.put(NormalExcelConstants.PARAMS, params); //文件名稱
    map.put(NormalExcelConstants.FILE_NAME, "員工信息表"); //View名稱
    return NormalExcelConstants.EASYPOI_EXCEL_VIEW; }

導入功能緩存

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>導入管理</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:'選擇一個文件...',buttonText: '選擇文件'" />
    <button class="easyui-linkbutton">導入</button>
</form>
<h3 style="color: red">上傳說明</h3>
<h4> 上傳必須如下載的excel格式爲準 </h4>
<h4> 用戶名不得爲空值或重複得值 </h4>
<h4> 年齡應爲20-80歲之間 </h4>
<h4> 若是上傳的文件不符合要求 </h4>
<h4> 在上傳提交後會出現上傳失敗文件，裏面有上傳失敗的內容和緣由 </h4>
<h4> 若無提示，則表示上傳成功 </h4>
</body>
</html>

導入後臺app

//上傳員工excel的功能
@RequestMapping("/employeeXlsx") public String employeeXlsx(MultipartFile empFile, HttpServletResponse response) throws Exception{ //設置導入的參數
    ImportParams params = new ImportParams(); //設置須要驗證
    params.setNeedVerfiy(true); params.setHeadRows(1); //加入自定義驗證
 params.setVerifyHandler(employeeExcelVerifyHandler); //得到excel但如的結果
    ExcelImportResult<Employee> result = ExcelImportUtil.importExcelMore( empFile.getInputStream(), Employee.class, params); //拿到正確的數據，而後把它們保存到數據庫
    List<Employee> list = result.getList(); list.forEach(e ->{ //從數據庫中查詢部門
        String deptName = e.getDepartmentId().getName(); Department dept = iDepartmentService.findByName(deptName); e.setDepartmentId(dept); //設置初始密碼
        String md5EncryptionByPassword = MD5EncryptionByPassword.MD_5_ENCRYPTION_BY_PASSWORD.getMD5EncryptionByPassword("123"); e.setPassword(md5EncryptionByPassword); iEmployeeService.save(e); }); //若是有錯誤
    if(result.isVerfiyFail()) { //得到Workbook對象，以返回失敗文檔
        Workbook failWorkbook = result.getFailWorkbook(); //設置響應的文件類型
        response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"); //attachment:不要用瀏覽器打開
        response.setHeader("Content-disposition", "attachment;filename=empFail.xlsx"); //設置不要緩存
        response.setHeader("Pragma", "No-cache"); OutputStream ouputStream = response.getOutputStream(); failWorkbook.write(ouputStream); ouputStream.flush(); ouputStream.close(); } return "importManage"; }

導入驗證包dom

<dependency>
  <groupId>org.hibernate</groupId>
  <artifactId>hibernate-validator</artifactId>
  <version>5.2.4.Final</version>
</dependency>

domain類加上驗證的註解

@Excel(name = "用戶名") @NotNull(message = "用戶名不爲空") private String username; private String password; @Excel(name = "郵箱",width = 20) private String email; @Excel(name = "頭像",type = 2,height = 30) private String headImage; @Excel(name = "年齡") @Max(value = 80,message = "年齡最大值不能超過80") @Min(value = 20,message = "年齡最大值不能小於20") private Integer age; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "department_id") @ExcelEntity//導出的是實體對象
private Department departmentId;

加上自定義驗證

掃描自定義驗證的包 <context:component-scan base-package="cn.king.aisell.common" />

自定義驗證功能

@Component public class EmployeeExcelVerifyHandler implements IExcelVerifyHandler<Employee> { @Autowired private IEmployeeService iemployeeService; @Override public ExcelVerifyHandlerResult verifyHandler(Employee employee) { //寫邏輯驗證用戶名是否重複
        boolean success = iemployeeService.checkName(employee.getUsername()); if(success){ //true表明能夠用
            return new  ExcelVerifyHandlerResult(true); } return new ExcelVerifyHandlerResult(false,"用戶名重複"); } }

完成controller上傳

//上傳員工excel的功能
@RequestMapping("/employeeXlsx") public String employeeXlsx(MultipartFile empFile, HttpServletResponse response) throws Exception{ //設置導入的參數
    ImportParams params = new ImportParams(); //設置須要驗證
    params.setNeedVerfiy(true); params.setHeadRows(1); //加入自定義驗證
 params.setVerifyHandler(employeeExcelVerifyHandler); //得到excel但如的結果
    ExcelImportResult<Employee> result = ExcelImportUtil.importExcelMore( empFile.getInputStream(), Employee.class, params); //拿到正確的數據，而後把它們保存到數據庫
    List<Employee> list = result.getList(); list.forEach(e ->{ //從數據庫中查詢部門
        String deptName = e.getDepartmentId().getName(); Department dept = iDepartmentService.findByName(deptName); e.setDepartmentId(dept); //設置初始密碼
        String md5EncryptionByPassword = MD5EncryptionByPassword.MD_5_ENCRYPTION_BY_PASSWORD.getMD5EncryptionByPassword("123"); e.setPassword(md5EncryptionByPassword); iEmployeeService.save(e); }); //若是有錯誤
    if(result.isVerfiyFail()) { //得到Workbook對象，以返回失敗文檔
        Workbook failWorkbook = result.getFailWorkbook(); //設置響應的文件類型
        response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"); //attachment:不要用瀏覽器打開
        response.setHeader("Content-disposition", "attachment;filename=empFail.xlsx"); //設置不要緩存
        response.setHeader("Pragma", "No-cache"); OutputStream ouputStream = response.getOutputStream(); failWorkbook.write(ouputStream); ouputStream.flush(); ouputStream.close(); } return "importManage"; }