springmvc生成文件（excel、pdf...）和文件上传

生成文件 

以下以下载excel文件为例，如有其它需要可自定义实现类继承相应springmvc提供的试图接口即可。

如生成Excel则继承AbstractExcelView，生成PDF则继承AbstractPdfView。

 

java代码：

 1     /*
 2  * 导出用户信息到EXCEL 3  * 4  * @return 5  */ 6  @RequestMapping(value = "/excel") 7  public ModelAndView exportExcel() { 8  ModelAndView mv = this.getModelAndView(); 9  PageData pd = new PageData(); 10  pd = this.getPageData(); 11  try { 12 13  // 检索条件=== 14  String USERNAME = pd.getString("USERNAME"); 15  if (null != USERNAME && !"".equals(USERNAME)) { 16  USERNAME = USERNAME.trim(); 17  pd.put("USERNAME", USERNAME); 18  } 19  String lastLoginStart = pd.getString("lastLoginStart"); 20  String lastLoginEnd = pd.getString("lastLoginEnd"); 21  if (lastLoginStart != null && !"".equals(lastLoginStart)) { 22  lastLoginStart = lastLoginStart + " 00:00:00"; 23  pd.put("lastLoginStart", lastLoginStart); 24  } 25  if (lastLoginEnd != null && !"".equals(lastLoginEnd)) { 26  lastLoginEnd = lastLoginEnd + " 00:00:00"; 27  pd.put("lastLoginEnd", lastLoginEnd); 28  } 29  // 检索条件=== 30 31 Map<String, Object> dataMap = new HashMap<String, Object>(); 32 List<String> titles = new ArrayList<String>(); 33 34  titles.add("用户名"); // 1 35  titles.add("编号"); // 2 36  titles.add("姓名"); // 3 37  titles.add("职位"); // 4 38  titles.add("手机"); // 5 39  titles.add("邮箱"); // 6 40  titles.add("最近登录"); // 7 41  titles.add("上次登录IP"); // 8 42 43  dataMap.put("titles", titles); 44 45 List<PageData> userList = userService.listAllUser(pd); 46 List<PageData> varList = new ArrayList<PageData>(); 47 for (int i = 0; i < userList.size(); i++) { 48 PageData vpd = new PageData(); 49 vpd.put("var1", userList.get(i).getString("USERNAME")); // 1 50 vpd.put("var2", userList.get(i).getString("NUMBER")); // 2 51 vpd.put("var3", userList.get(i).getString("NAME")); // 3 52 vpd.put("var4", userList.get(i).getString("ROLE_NAME")); // 4 53 vpd.put("var5", userList.get(i).getString("PHONE")); // 5 54 vpd.put("var6", userList.get(i).getString("EMAIL")); // 6 55 vpd.put("var7", userList.get(i).getString("LAST_LOGIN")); // 7 56 vpd.put("var8", userList.get(i).getString("IP")); // 8 57 varList.add(vpd); 58 } 59 60 dataMap.put("varList", varList); 61 62 ObjectExcelView erv = new ObjectExcelView(); // 执行excel操作 63 64 mv = new ModelAndView(erv, dataMap); 65 } catch (Exception e) { 66 logger.error(e.toString(), e); 67 } 68 return mv; 69 }

 

返回视图类代码： 

 1 package com.fh.util;
 2 
 3 import java.util.Date; 4 import java.util.List; 5 import java.util.Map; 6 7 import javax.servlet.http.HttpServletRequest; 8 import javax.servlet.http.HttpServletResponse; 9 10 import org.apache.poi.hssf.usermodel.HSSFCell; 11 import org.apache.poi.hssf.usermodel.HSSFCellStyle; 12 import org.apache.poi.hssf.usermodel.HSSFFont; 13 import org.apache.poi.hssf.usermodel.HSSFSheet; 14 import org.apache.poi.hssf.usermodel.HSSFWorkbook; 15 import org.springframework.web.servlet.view.document.AbstractExcelView; 16 17 18 /** 19  * 导入到EXCEL 类名称：ObjectExcelView.java 20  * @author link 21  * 22  */ 23 public class ObjectExcelView extends AbstractExcelView { 24 25  @Override 26 protected void buildExcelDocument(Map<String, Object> model, HSSFWorkbook workbook, HttpServletRequest request, 27 HttpServletResponse response) throws Exception { 28 // TODO Auto-generated method stub 29 Date date = new Date(); 30 String filename = Tools.date2Str(date, "yyyyMMddHHmmss"); 31 HSSFSheet sheet; 32 HSSFCell cell; 33 response.setContentType("application/octet-stream"); 34 response.setHeader("Content-Disposition", "attachment;filename=" + filename + ".xls"); 35 sheet = workbook.createSheet("sheet1"); 36 37 List<String> titles = (List<String>) model.get("titles"); 38  int len = titles.size(); 39  HSSFCellStyle headerStyle = workbook.createCellStyle(); // 标题样式 40  headerStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); 41  headerStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); 42  HSSFFont headerFont = workbook.createFont(); // 标题字体 43  headerFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); 44  headerFont.setFontHeightInPoints((short) 11); 45  headerStyle.setFont(headerFont); 46  short width = 20, height = 25 * 20; 47  sheet.setDefaultColumnWidth(width); 48 for (int i = 0; i < len; i++) { // 设置标题 49 String title = titles.get(i); 50 cell = getCell(sheet, 0, i); 51 cell.setCellStyle(headerStyle); 52 setText(cell, title); 53 } 54 sheet.getRow(0).setHeight(height); 55 56 HSSFCellStyle contentStyle = workbook.createCellStyle(); // 内容样式 57 contentStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); 58 List<PageData> varList = (List<PageData>) model.get("varList"); 59 int varCount = varList.size(); 60 for (int i = 0; i < varCount; i++) { 61 PageData vpd = varList.get(i); 62 for (int j = 0; j < len; j++) { 63 String varstr = vpd.getString("var" + (j + 1)) != null ? vpd.getString("var" + (j + 1)) : ""; 64 cell = getCell(sheet, i + 1, j); 65 cell.setCellStyle(contentStyle); 66 setText(cell, varstr); 67 } 68 } 69 } 70 }

 

文件上传

springmvc配置文件：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
     xmlns:mvc="http://www.springframework.org/schema/mvc"
     xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
 
     <!-- mvc:annotation-driven默认加载了url映射器和适配器 -->
     <mvc:annotation-driven />
     <mvc:default-servlet-handler />
 
     <context:component-scan base-package="com.fh.controller" />
     <context:component-scan base-package="com.json" />
 
     <!-- 对静态资源文件的访问 restful -->
     <mvc:resources mapping="/admin/**" location="/,/admin/" />
     <mvc:resources mapping="/static/**" location="/,/static/" />
     <mvc:resources mapping="/plugins/**" location="/,/plugins/" />
     <mvc:resources mapping="/uploadFiles/**" location="/,/uploadFiles/" />
 
     <!-- 访问拦截 -->
     <mvc:interceptors>
         <mvc:interceptor>
             <mvc:mapping path="/**/**" />
             <bean class="com.fh.interceptor.LoginHandlerInterceptor" />
         </mvc:interceptor>
     </mvc:interceptors>
 
     <!-- 配置SpringMVC的视图解析器 -->
     <bean
         class="org.springframework.web.servlet.view.InternalResourceViewResolver">
         <property name="prefix" value="/WEB-INF/jsp/" />
         <property name="suffix" value=".jsp" />
     </bean>
 
       <!-- 统一异常处理 -->
     <bean id="exceptionResolver" class="com.fh.resolver.MyExceptionResolver"></bean>

     <!-- 文件上传 -->
     <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
         <property name="maxUploadSize">
             <value>104857600</value>
         </property>
         <property name="maxInMemorySize">
             <value>4096</value>
         </property>
         <property name="defaultEncoding">
             <value>utf-8</value>
         </property>
     </bean>
</beans>

 

jsp代码：

    <form action="user/readExcel.do" name="Form" id="Form" method="post" enctype="multipart/form-data">
        <div id="zhongxin">
        <table style="width:95%;" >
            
            <tr>
                <td style="padding-top: 20px;"><input type="file" id="excel" name="excel" style="width:50px;" onchange="fileType(this)" /></td>
            </tr>
            <tr>
                <td style="text-align: center;">
                    <a class="btn btn-mini btn-primary" onclick="save();">导入</a>
                    <a class="btn btn-mini btn-danger" onclick="top.Dialog.close();">取消</a>
                    <a class="btn btn-mini btn-success" onclick="window.location.href='<%=basePath%>/user/downExcel.do'">下载模版</a>
                </td>
            </tr>
        </table>
        </div>
        <div id="zhongxin2" class="center" style="display:none"><br/><img src="static/images/jzx.gif" /><br/><h4 class="lighter block green"></h4></div>
    </form>

 

 java代码：

    /**
     * 从EXCEL导入到数据库
     */
    @RequestMapping(value = "/readExcel")
    public ModelAndView readExcel(@RequestParam(value = "excel", required = false) MultipartFile file)
            throws Exception {
        ModelAndView mv = this.getModelAndView();
        PageData pd = new PageData();

        if (null != file && !file.isEmpty()) {
            String filePath = PathUtil.getClasspath() + Const.FILEPATHFILE; // 文件上传路径
            String fileName = FileUpload.fileUp(file, filePath, "userexcel"); // 执行上传

            List<PageData> listPd = (List) ObjectExcelRead.readExcel(filePath, fileName, 2, 0, 0); // 执行读EXCEL操作,读出的数据导入List
                                                                                                    // 2:从第3行开始；0:从第A列开始；0:第0个sheet

            /* 存入数据库操作 */
            pd.put("RIGHTS", ""); // 权限
            pd.put("LAST_LOGIN", ""); // 最后登录时间
            pd.put("IP", ""); // IP
            pd.put("STATUS", "0"); // 状态
            pd.put("SKIN", "default"); // 默认皮肤

            List<Role> roleList = roleService.listAllERRoles(); // 列出所有二级角色

            pd.put("ROLE_ID", roleList.get(0).getROLE_ID()); // 设置角色ID为随便第一个
            /**
             * var0 :编号 var1 :姓名 var2 :手机 var3 :邮箱 var4 :备注
             */
            for (int i = 0; i < listPd.size(); i++) {
31                 pd.put("USER_ID", this.get32UUID()); // ID
32                 pd.put("NAME", listPd.get(i).getString("var1")); // 姓名
33 
34                 String USERNAME = GetPinyin.getPingYin(listPd.get(i).getString("var1")); // 根据姓名汉字生成全拼
35                 pd.put("USERNAME", USERNAME);
36                 if (userService.findByUId(pd) != null) { // 判断用户名是否重复
37                     USERNAME = GetPinyin.getPingYin(listPd.get(i).getString("var1")) + Tools.getRandomNum();
38                     pd.put("USERNAME", USERNAME);
39                 }
40                 pd.put("BZ", listPd.get(i).getString("var4")); // 备注
41                 if (Tools.checkEmail(listPd.get(i).getString("var3"))) { // 邮箱格式不对就跳过
42                     pd.put("EMAIL", listPd.get(i).getString("var3"));
43                     if (userService.findByUE(pd) != null) { // 邮箱已存在就跳过
44                         continue;
45                     }
46                 } else {
47                     continue;
48                 }
49 
50                 pd.put("NUMBER", listPd.get(i).getString("var0")); // 编号已存在就跳过
51                 pd.put("PHONE", listPd.get(i).getString("var2")); // 手机号
52 
53                 pd.put("PASSWORD", new SimpleHash("SHA-1", USERNAME, "123").toString()); // 默认密码123
54                 if (userService.findByUN(pd) != null) {
55                     continue;
56                 }
57                 userService.saveU(pd);
58             }
59             /* 存入数据库操作*/
60 
61             mv.addObject("msg", "success");
62         }
63 
64         mv.setViewName("save_result");
65         return mv;
66     }