基于spring3.0mvc框架的文件上传实现

SPRing 框架提供了构建 Web 应用程序的全功能 MVC 模块。使用 Spring 可插入的 MVC 架构，可以选择是使用内置的 Spring Web 框架还是 Struts 这样的 Web 框架。通过策略接口，Spring 框架是高度可配置的，而且包含多种视图技术，例如javaServer Pages（jsp）技术、Velocity、Tiles、iText 和 POI。Spring MVC 框架并不知道使用的视图，所以不会强迫您只使用 JSP 技术。Spring MVC 分离了控制器、模型对象、分派器以及处理程序对象的角色，这种分离让它们更容易进行定制。

第一步：1. spring使用了apache-commons下得上传组件，因此，我们需要引入两个jar包：

apache-commons-fileupload.jarapache-commons-io.jar第二步：2. 在springmvc-servlet.xml配置文件中，增加CommonsMultipartResoler配置：

<?xml version="1.0" encoding="UTF-8"?><beansxmlns="http://www.springframework.org/schema/beans"xmlns:context="http://www.springframework.org/schema/context"xmlns:p="http://www.springframework.org/schema/p"xmlns:mvc="http://www.springframework.org/schema/mvc"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/context

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

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

http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"><context:component-scanbase-package="com.tgb.web.controller.annotation"/><mvc:annotation-driven/><!--被上面替代

第三步：配置web.xml

1<?xml version="1.0" encoding="UTF-8"?>2<web-appversion="2.5"3xmlns="http://java.sun.com/xml/ns/javaee"4xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"5xsi:schemaLocation="http://java.sun.com/xml/ns/javaee6http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">78910<welcome-file-list>11<welcome-file>index.jsp</welcome-file>12</welcome-file-list>1314<servlet>15<servlet-name>springMVC</servlet-name>16<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>17<init-param>18<param-name>contextConfigLocation</param-name>19<param-value>classpath*:config/springMVC-servlet.xml</param-value>20</init-param>21<load-on-startup>1</load-on-startup>22</servlet>232425<filter>26<filter-name>encodingFilter</filter-name>27<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>28<init-param>29<param-name>encoding</param-name>30<param-value>UTF-8</param-value>31</init-param>32<init-param>33<param-name>froceEncoding</param-name>34<param-value>true</param-value>35</init-param>36</filter>3738<filter-mapping>39<filter-name>encodingFilter</filter-name>40<url-pattern>/*</url-pattern>41</filter-mapping>42434445<servlet-mapping>46<servlet-name>springMVC</servlet-name>47<url-pattern>/</url-pattern>48</servlet-mapping>49</web-app>

第四步：建立upload.jsp页面，内容如下：

1<%@ page language="java"import="java.util.*"pageEncoding="utf-8"%>2<%3Stringpath=request.getContextPath();4StringbasePath=request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";5%>67<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">8<html>9<head>10<basehref="<%=basePath%>">1112<title>测试springmvc中上传的实现</title>13<metahttp-equiv="pragma"content="no-cache">14<metahttp-equiv="cache-control"content="no-cache">15<metahttp-equiv="expires"content="0">16<metahttp-equiv="keyWords"content="keyword1,keyword2,keyword3">17<metahttp-equiv="description"content="This is my page">1821</head>2223<body>24<formaction="uploadContoller?toupload"method="post"enctype="multipart/form-data">25文件上传:<inputtype="file"value=""name="file">26<inputtype="submit"value="上传"/>27</form>28</body>29</html>

建立控制器UploadContoller.java（三种方法支持文件上传），代码如下：

packagecom.tgb.web.controller.annotation;importjava.io.File;importjava.io.FileNotFoundException;importjava.io.FileOutputStream;importjava.io.IOException;importjava.io.InputStream;importjava.util.Date;importjava.util.Iterator;importjavax.servlet.http.HttpServletRequest;importjavax.servlet.http.HttpServletResponse;importorg.springframework.stereotype.Controller;importorg.springframework.web.bind.annotation.RequestMapping;importorg.springframework.web.bind.annotation.RequestParam;importorg.springframework.web.multipart.MultipartFile;importorg.springframework.web.multipart.MultipartHttpServletRequest;importorg.springframework.web.multipart.commons.CommonsMultipartFile;importorg.springframework.web.multipart.commons.CommonsMultipartResolver;

@Controller

@RequestMapping("/uploadContoller")publicclassUploadContoller {//========================第一种：======================@RequestMapping(params="uploadUser")//普通上传publicString uploadUser(@RequestParam("file") CommonsMultipartFile file,

HttpServletRequest request, HttpServletResponse response)throwsIOException {

System.out.println("filename++++++++" +file.getOriginalFilename());if(!file.isEmpty()) {try{

Date date=newDate();

FileOutputStream os=newFileOutputStream("../images"

+ date.getTime() +file.getOriginalFilename());

InputStream in=file.getInputStream();intb = 0;while((b = in.read()) != -1) {

os.write(b);

}

os.flush();

os.close();

in.close();

}catch(FileNotFoundException e) {//TODO Auto-generated catch blocke.printStackTrace();

}

}return"success";

}//========================第二种：======================@RequestMapping(params="toupload")publicString toupload(HttpServletRequest request,

HttpServletResponse response) {//创建一个通用的多部分解析器CommonsMultipartResolver multipartResolver =newCommonsMultipartResolver(

request.getsession().getServletContext());//判断 request 是否有文件上传,即多部分请求if(multipartResolver.isMultipart(request)) {//转换成多部分requestMultipartHttpServletRequest multiRequest =(MultipartHttpServletRequest) request;//取得request中的所有文件名Iterator<String> iter =multiRequest.getFileNames();while(iter.hasNext()) {//记录上传过程起始时的时间，用来计算上传时间intpre = (int) System.currentTimeMillis();//取得上传文件MultipartFile file =multiRequest.getFile(iter.next());if(file !=null) {//取得当前上传文件的文件名称String myFileName =file.getOriginalFilename();//如果名称不为“”,说明该文件存在，否则说明该文件不存在if(myFileName.trim() != "") {

System.out.println(myFileName);//重命名上传后的文件名String fileName = "demoUpload"

+file.getOriginalFilename();//定义上传路径String path = "/images/" +fileName;

File localFile=newFile(path);try{

file.transferTo(localFile);

}catch(IllegalStateException e) {//TODO Auto-generated catch blocke.printStackTrace();

}catch(IOException e) {//TODO Auto-generated catch blocke.printStackTrace();

}

}//记录上传该文件后的时间intfinaltime = (int) System.currentTimeMillis();

System.out.println(finaltime-pre);

}

}return"success";

}//========================第三种：======================@RequestMapping(params="niceupload")//优化上传publicString niceupload(HttpServletRequest request,

HttpServletResponse response) {

CommonsMultipartResolver multipartResolver=newCommonsMultipartResolver(

request.getSession().getServletContext());if(multipartResolver.isMultipart(request)) {

MultipartHttpServletRequest mulitRequest=(MultipartHttpServletRequest) (request);

Iterator<String> iterator =mulitRequest.getFileNames();while(iterator.hasNext()) {

MultipartFile fiel=mulitRequest.getFile((String) iterator

.next());if(fiel !=null) {

String fileName= "demoUpload" +fiel.getOriginalFilename();

String path= "D:/" +fileName;

File localfile=newFile(path);try{

fiel.transferTo(localfile);

}catch(IllegalStateException e) {//TODO Auto-generated catch blocke.printStackTrace();

}catch(IOException e) {//TODO Auto-generated catch blocke.printStackTrace();

}

}return"/success";

}

5. 建立success.jsp页面

<%@ page language="java"import="java.util.*"contentType="text/html;charset=utf-8"pageEncoding="utf-8"%><%@taglib uri="http://java.sun.com/jsp/jstl/core"prefix="c"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title>传递参数</title></head><body><h1>上传成功 +++++++++++</h1></body></html>

发布项目，运行测试：http://localhost:8080/springmvc03/upload.jsp 3、进入项目发布后的目录，发现文件上传成功：

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