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="95%;" >
            
            <tr>
                <td style="padding-top: 20px;"><input type="file" id="excel" name="excel" style="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     }