SpringMVC11文件上传详解编程语言

 1 %@ page language="java" import="java.util.*" pageEncoding="UTF-8"% 

 2 % 

 3 String path = request.getContextPath(); 

 4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 

 5 % 

 6 !DOCTYPE HTML 

 7 html 

 8 head 

 9 base href=" %=basePath% " 

11 title My JSP index.jsp starting page /title 

12 meta http-equiv="pragma" content="no-cache" 

13 meta http-equiv="cache-control" content="no-cache" 

14 meta http-equiv="expires" content="0" 

15 meta http-equiv="keywords" content="keyword1,keyword2,keyword3" 

16 meta http-equiv="description" content="This is my page" 

18 !-- 

19 link rel="stylesheet" type="text/css" href="styles.css" 

20 -- 

22 /head 

23 body 

24 form action="user/login" method="post" enctype="multipart/form-data" 

25 input type="file" name="imgs"/ 

26 input type="file" name="imgs"/ 

27 input type="file" name="imgs"/ 

28 button 上传文件 /button 

29 /form 

31 /body 

32 /html 

index.jsp文件上传的页面

 %@ page language="java" import="java.util.*" pageEncoding="UTF-8"% 

String path = request.getContextPath(); 

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 

 !DOCTYPE HTML 

 html 

 head 

 base href=" %=basePath% " 

 title My JSP index.jsp starting page /title 

 meta http-equiv="pragma" content="no-cache" 

 meta http-equiv="cache-control" content="no-cache" 

 meta http-equiv="expires" content="0" 

 meta http-equiv="keywords" content="keyword1,keyword2,keyword3" 

 meta http-equiv="description" content="This is my page" 

 !-- 

 link rel="stylesheet" type="text/css" href="styles.css" 

 /head 

 body 

 form action="user/login" method="post" enctype="multipart/form-data" 

 input type="file" name="imgs"/ 

 input type="file" name="imgs"/ 

 input type="file" name="imgs"/ 

 button 上传文件 /button 

 /form 

 /body 

 /html 

 %@ page language="java" import="java.util.*" pageEncoding="UTF-8"% 

String path = request.getContextPath(); 

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 

 !DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 

 html 

 head 

 base href=" %=basePath% " 

 title My JSP success.jsp starting page /title 

 meta http-equiv="pragma" content="no-cache" 

 meta http-equiv="cache-control" content="no-cache" 

 meta http-equiv="expires" content="0" 

 meta http-equiv="keywords" content="keyword1,keyword2,keyword3" 

 meta http-equiv="description" content="This is my page" 

 !-- 

 link rel="stylesheet" type="text/css" href="styles.css" 

 /head 

 body 

 h1 webroot success页面 /h1 

 /body 

 /html 

success.jsp成功界面

@Controller 

@RequestMapping("/user") 

public class MyController { 

 /** 

 * 单个文件上传 

 * MultipartFile img :必须和表单中的name属性值一致 

 * @throws Exception 

 * @throws IllegalStateException 

 @RequestMapping(value = "/login") 

 public String login(MultipartFile img, HttpSession session) 

 throws IllegalStateException, Exception { 

 System.out.println("进入了login......"); 

 // 获取上传的位置 

 String path = session.getServletContext().getRealPath("/images"); 

 // 获取文件的名称 

 String filename = img.getOriginalFilename(); 

 System.out.println(img.getOriginalFilename()); 

 System.out.println(img.getName()); // 表单中name的属性值 

 System.out.println(img.getContentType()); // 上传文件的类型 

 // 上传文件只能是图片 通过MIME类型 来判断 

 if (img.getContentType().equals("image/jpeg")) { 

 img.transferTo(new File(path, filename)); // 上传 

 return "/success.jsp"; 

 }*/ 

 /** 

 * 多个文件上传 

 * @RequestParam 必须使用！ [email protected] 

 * 默认前台的每一个imgs都是一个数组！ 

 * 我们想要的是前台的所有上传文件 在一个数组里面！ 

 @RequestMapping(value = "/login") 

 public String login(@RequestParam MultipartFile[] imgs, HttpSession session) 

 throws IllegalStateException, Exception { 

 System.out.println("进入了login......"); 

 // 获取上传的位置 

 String path = session.getServletContext().getRealPath("/images"); 

 // 循环获取文件的名称 

 for (MultipartFile img : imgs) { 

 // 判断用户是否选择文件 

 if (img.getSize() 0) { 

 String filename = img.getOriginalFilename(); 

 img.transferTo(new File(path, filename)); // 上传 

 return "/success.jsp"; 

}

对应的controller代码

 ?xml version="1.0" encoding="UTF-8"? 

 beans xmlns="http://www.springframework.org/schema/beans" 

 xmlns:mvc="http://www.springframework.org/schema/mvc" 

 xmlns:context="http://www.springframework.org/schema/context" 

 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

 xsi:schemaLocation=" 

 http://www.springframework.org/schema/beans 

 http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 

 http://www.springframework.org/schema/mvc 

 http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd 

 http://www.springframework.org/schema/context 

 http://www.springframework.org/schema/context/spring-context-3.0.xsd" 


 mvc:annotation-driven/ 

 !-- 配置文件上传 id必须是multipartResolver 因为已经在中央调度器 

中定义了 

 Well-known name for the MultipartResolver object in the bean factory for this namespace. */ 

 public static final String MULTIPART_RESOLVER_BEAN_NAME = "multipartResolver"; 

 bean id="multipartResolver" 

 property name="defaultEncoding" value="utf-8"/ !--乱码问题 -- 

 property name="maxUploadSize" value="1048576"/ !-- 文件总大小不能超过 1M-- 

 !-- property name="maxUploadSizePerFile" value="1048576"/ 单个文件不能超过1m -- 

 /bean