1、commons-fileupload-1.2.2.jar
2、commons-io-2.0.1.jar
2、要实现SpringMVC的文件上传,需要配置一下文件:
1 <!-- SpringMVC上传文件时,需要配置MultipartResolver处理器 --> 2 <bean id="multipartResolver" 3 class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 4 <property name="defaultEncoding" value="UTF-8" /> 5 <!-- 指定所上传文件的总大小不能超过200KB。注意maxUploadSize属性的限制不是针对单个文件,而是所有文件的容量之和 --> 6 <property name="maxUploadSize" value="-1" /> 7 </bean> 8 9 <!-- SpringMVC在超出上传文件限制时,会抛出org.springframework.web.multipart.MaxUploadSizeExceededException --> 10 <!-- 该异常是SpringMVC在检查上传的文件信息时抛出来的,而且此时还没有进入到Controller方法中 --> 11 <bean id="exceptionResolver" 12 class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver"> 13 <property name="exceptionMappings"> 14 <props> 15 <!-- 遇到MaxUploadSizeExceededException异常时,自动跳转到XXX页面 --> 16 <prop 17 key="org.springframework.web.multipart.MaxUploadSizeExceededException">跳转XXX页面</prop> 18 </props> 19 </property> 20 </bean>
3、上传页面
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <% 4 String path = request.getContextPath(); 5 String basePath = request.getScheme() + "://" 6 + request.getServerName() + ":" + request.getServerPort() 7 + path + "/"; 8 %> 9 10 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 11 <html> 12 <head> 13 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 14 <title>上传文件</title> 15 </head> 16 <body> 17 <form action="<%=basePath%>upload.do" method="post" 18 enctype="multipart/form-data"> 19 <input type="hidden" name="tuzi" value="tuzi"> 20 上传文件:<input type="file" name="uploadfile"> 21 <input type="submit" value="上传"> 22 </form> 23 </body> 24 </html>
4、文件处理类:
1 package lcw.controller;
2
3 import java.io.File;
4 import java.io.IOException;
5
6 import javax.servlet.http.HttpServletRequest;
7
8 import org.apache.commons.io.FileUtils;
9 import org.springframework.stereotype.Controller;
10 import org.springframework.web.bind.annotation.RequestMapping;
11 import org.springframework.web.bind.annotation.RequestParam;
12 import org.springframework.web.multipart.commons.CommonsMultipartFile;
13
14 /**
15 *
16 * 文件上传处理类
17 *
18 */
19 @Controller
20 public class FileController {
21
22 //单文件上传
23 @RequestMapping(value = "/upload.do")
24 public String queryFileData(
25 @RequestParam("uploadfile") CommonsMultipartFile file,
26 HttpServletRequest request) {
27 // MultipartFile是对当前上传的文件的封装,当要同时上传多个文件时,可以给定多个MultipartFile参数(数组)
28 if (!file.isEmpty()) {
29 String type = file.getOriginalFilename().substring(
30 file.getOriginalFilename().indexOf("."));// 取文件格式后缀名
31 String filename = System.currentTimeMillis() + type;// 取当前时间戳作为文件名
32 String path = request.getSession().getServletContext()
33 .getRealPath("/upload/" + filename);// 存放位置
34 File destFile = new File(path);
35 try {
36 // FileUtils.copyInputStreamToFile()这个方法里对IO进行了自动操作,不需要额外的再去关闭IO流
37 FileUtils
38 .copyInputStreamToFile(file.getInputStream(), destFile);// 复制临时文件到指定目录下
39 } catch (IOException e) {
40 e.printStackTrace();
41 }
42 return "redirect:upload_ok.jsp";
43 } else {
44 return "redirect:upload_error.jsp";
45 }
46 }
47 }
5、再来看下关于多文件上传,其实原理还是一样,只不过是把CommonsMultipartFile类对象换成一个数组,然后用一个for循环去遍历这个数组,并分别存入。
1 package lcw.controller;
2
3 import java.io.File;
4 import java.io.IOException;
5
6 import javax.servlet.http.HttpServletRequest;
7
8 import org.apache.commons.io.FileUtils;
9 import org.springframework.stereotype.Controller;
10 import org.springframework.web.bind.annotation.RequestMapping;
11 import org.springframework.web.bind.annotation.RequestParam;
12 import org.springframework.web.multipart.commons.CommonsMultipartFile;
13
14 /**
15 *
16 * 文件上传处理类
17 *
18 */
19 @Controller
20 public class FileController {
21
22 //单文件上传
23 @RequestMapping(value = "/upload.do")
24 public String queryFileData(
25 @RequestParam("uploadfile") CommonsMultipartFile file,
26 HttpServletRequest request) {
27 // MultipartFile是对当前上传的文件的封装,当要同时上传多个文件时,可以给定多个MultipartFile参数(数组)
28 if (!file.isEmpty()) {
29 String type = file.getOriginalFilename().substring(
30 file.getOriginalFilename().indexOf("."));// 取文件格式后缀名
31 String filename = System.currentTimeMillis() + type;// 取当前时间戳作为文件名
32 String path = request.getSession().getServletContext()
33 .getRealPath("/upload/" + filename);// 存放位置
34 File destFile = new File(path);
35 try {
36 // FileUtils.copyInputStreamToFile()这个方法里对IO进行了自动操作,不需要额外的再去关闭IO流
37 FileUtils
38 .copyInputStreamToFile(file.getInputStream(), destFile);// 复制临时文件到指定目录下
39 } catch (IOException e) {
40 e.printStackTrace();
41 }
42 return "redirect:upload_ok.jsp";
43 } else {
44 return "redirect:upload_error.jsp";
45 }
46 }
47
48 //多文件上传
49 @RequestMapping(value = "/uploads.do")
50 public String queryFileDatas(
51 @RequestParam("uploadfile") CommonsMultipartFile[] files,
52 HttpServletRequest request) {
53 if (files != null) {
54 for (int i = 0; i < files.length; i++) {
55 String type = files[i].getOriginalFilename().substring(
56 files[i].getOriginalFilename().indexOf("."));// 取文件格式后缀名
57 String filename = System.currentTimeMillis() + type;// 取当前时间戳作为文件名
58 String path = request.getSession().getServletContext()
59 .getRealPath("/upload/" + filename);// 存放位置
60 File destFile = new File(path);
61 try {
62 FileUtils.copyInputStreamToFile(files[i].getInputStream(),
63 destFile);// 复制临时文件到指定目录下
64 } catch (IOException e) {
65 e.printStackTrace();
66 }
67 }
68 return "redirect:upload_ok.jsp";
69 } else {
70 return "redirect:upload_error.jsp";
71 }
72
73 }
74
75 }
原文:http://www.cnblogs.com/s1297-lgy/p/7456093.html