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2. SpringMVC 上传文件操作
1.创建java web项目：SpringMVCUploadDownFile
2.在项目的WebRoot下的WEB-INF的lib包下添加如下jar文件
1 com.springsource.com.mchange.v2.c3p0-0.9.1.2.jar 2 com.springsource.net.sf.cglib-2.2.0.jar 3 com.springsource.org.aopalliance-1.0.0.jar 4 com.springsource.org.apache.commons.fileupload-1.2.0.jar 5 com.springsource.org.apache.commons.httpclient-3.1.0.jar 6 com.springsource.org.apache.commons.lang-2.4.0.jar 7 com.springsource.org.apache.commons.logging-1.1.1.jar 8 com.springsource.org.apache.commons.pool-1.5.3.jar 9 com.springsource.org.apache.log4j-1.2.15.jar 10 com.springsource.org.aspectj.weaver-1.6.8.RELEASE.jar 11 com.springsource.org.codehaus.jackson.mapper-1.0.0.jar 12 commons-dbcp.jar 13 commons-fileupload-1.2.1.jar 14 commons-io-2.0.jar 15 jotm.jar 16 ojdbc14.jar 17 org.springframework.aop-3.0.1.RELEASE-A.jar 18 org.springframework.asm-3.0.1.RELEASE-A.jar 19 org.springframework.aspects-3.0.1.RELEASE-A.jar 20 org.springframework.beans-3.0.1.RELEASE-A.jar 21 org.springframework.context-3.0.1.RELEASE-A.jar 22 org.springframework.core-3.0.1.RELEASE-A.jar 23 org.springframework.expression-3.0.1.RELEASE-A.jar 24 org.springframework.instrument-3.0.1.RELEASE-A.jar 25 org.springframework.instrument.tomcat-3.0.1.RELEASE-A.jar 26 org.springframework.jdbc-3.0.1.RELEASE-A.jar 27 org.springframework.orm-3.0.1.RELEASE-A.jar 28 org.springframework.oxm-3.0.1.RELEASE-A.jar 29 org.springframework.transaction-3.0.1.RELEASE-A.jar 30 org.springframework.web-3.0.1.RELEASE-A.jar 31 org.springframework.web.portlet-3.0.1.RELEASE-A.jar 32 org.springframework.web.servlet-3.0.1.RELEASE-A.jar 33 org.springframework.web.struts-3.0.1.RELEASE-A.jar 34 persistence.jar 35 xapool.jar
3.在项目的WebRoot下的WEB-INF下添加springmvc-servlet.xml文件
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:context="http://www.springframework.org/schema/context" 4 xmlns:mvc="http://www.springframework.org/schema/mvc" 5 xmlns:xsd="http://www.w3.org/2001/XMLSchema" 6 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 7 xsi:schemaLocation="http://www.springframework.org/schema/beans 8 http://www.springframework.org/schema/beans/spring-beans.xsd 9 http://www.springframework.org/schema/context 10 http://www.springframework.org/schema/context/spring-context.xsd 11 http://www.springframework.org/schema/mvc 12 http://www.springframework.org/schema/mvc/spring-mvc.xsd 13 "> 14 <!-- 一。SpringMVC链接数据库步骤 --> 15 <!-- 1.mvc支持注解 --> 16 <mvc:annotation-driven/> 17 <!-- 2.全局扫描包 --> 18 <context:component-scan base-package="com"/> 19 20 <!-- 3.驱动管理数据源 --> 21 <!-- 4.数据源事务管理 --> 22 <!-- 5.sqlsessionfactorybean --> 23 <!-- 6.spring和mybatis整合，映射输入参数 --> 24 25 26 <!--二。 上传下载配置 --> 27 28 <!-- 1.springMVC上传文件时，需要配置CommonsMultipartResolver处理器 --> 29 <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 30 <!-- 设置默认的编码格式 --> 31 <property name="defaultEncoding" value="UTF-8"/> 32 <!-- 指定所上传文件的总的大小不能超过200kb， 33 注意maxUploadSize属性点 限制 不是针对单个文件， 34 而是所有文件的容量总和--> 35 <property name="maxUploadSize" value="-1"/> 36 </bean> 37 38 <!-- 2.springMVC在超出上传文件限制时，会抛出 39 org.springframework.web.multipart.MaxUploadSizeExceededException 40 该异常时SpringMVC在检查上传文件信息时抛出来的，而且此时还没有进入到Controller方法中 41 --> 42 <bean id="exceptionResolver" class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver"> 43 <property name="exceptionMappings"> 44 <props> 45 <!-- 在遇到MaxUploadSizeExceededException异常时，自动跳到xxx面 --> 46 <prop key="org.springframework.web.multipart.MaxUploadSizeExceededException">error.jsp</prop> 47 </props> 48 </property> 49 </bean> 50 51 52 </beans>
4.在项目的WebRoot下添加index.jsp文件
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 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 8 <html> 9 <head> 10 <base href="<%=basePath%>"> 11 12 <title>上传文件</title> 13 <meta http-equiv="pragma" content="no-cache"> 14 <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> 15 <meta http-equiv="cache-control" content="no-cache"> 16 <meta http-equiv="expires" content="0"> 17 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> 18 <meta http-equiv="description" content="This is my page"> 19 <!-- 20 <link rel="stylesheet" type="text/css" href="http://www.mamicode.com/styles.css"> 21 --> 22 </head> 23 24 <body> 25 <form action="<%=basePath%>upload.do" method="post" enctype="multipart/form-data"> 26 <input type="hidden" name="holly" value="holly"/> 27 上传文件:<input type="file" name="uploadfile"> 28 <input type="submit" value="上传"> 29 </form> 30 </body> 31 </html>
5.在项目的WebRoot下添加success.jsp文件
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 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 8 <html> 9 <head> 10 <base href="<%=basePath%>"> 11 12 <title>My JSP ‘index.jsp‘ starting page</title> 13 <meta http-equiv="pragma" content="no-cache"> 14 <meta http-equiv="cache-control" content="no-cache"> 15 <meta http-equiv="expires" content="0"> 16 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> 17 <meta http-equiv="description" content="This is my page"> 18 <!-- 19 <link rel="stylesheet" type="text/css" href="http://www.mamicode.com/styles.css"> 20 --> 21 </head> 22 23 <body> 24 文件上传成功 25 </body> 26 </html>
6.在项目的WebRoot下添加fail.jsp文件
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 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 8 <html> 9 <head> 10 <base href="<%=basePath%>"> 11 12 <title>My JSP ‘index.jsp‘ starting page</title> 13 <meta http-equiv="pragma" content="no-cache"> 14 <meta http-equiv="cache-control" content="no-cache"> 15 <meta http-equiv="expires" content="0"> 16 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> 17 <meta http-equiv="description" content="This is my page"> 18 <!-- 19 <link rel="stylesheet" type="text/css" href="http://www.mamicode.com/styles.css"> 20 --> 21 </head> 22 23 <body> 24 文件上传失败 25 </body> 26 </html>
7.在项目的WebRoot下添加error.jsp文件
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 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 8 <html> 9 <head> 10 <base href="<%=basePath%>"> 11 12 <title>My JSP ‘index.jsp‘ starting page</title> 13 <meta http-equiv="pragma" content="no-cache"> 14 <meta http-equiv="cache-control" content="no-cache"> 15 <meta http-equiv="expires" content="0"> 16 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> 17 <meta http-equiv="description" content="This is my page"> 18 <!-- 19 <link rel="stylesheet" type="text/css" href="http://www.mamicode.com/styles.css"> 20 --> 21 </head> 22 23 <body> 24 文件上传异常 25 </body> 26 </html>
8.在项目的WebRoot下添加upload文件夹
9.在项目的src下的com.controller包下创建FileController.java文件
1 package com.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.MultipartFile; 13 import org.springframework.web.multipart.commons.CommonsMultipartFile; 14 15 @Controller 16 public class FileController { 17 /** 18 * 19 * @param file 该属性使用得使用commons-io-2.0.jar文件，低版本不行 20 * @param request 21 * @return 22 */ 23 @RequestMapping("/upload.do") 24 public String queryFileData(@RequestParam("uploadfile") CommonsMultipartFile file,HttpServletRequest request){ 25 26 /*MultipartFile是对当前上传的文件的封装， 27 * 当同时上传多个文件时，可以给定多个MultipartFile参数（数组） 28 */ 29 if(file!=null){ 30 System.out.println("文件对象接到了！"); 31 32 //获取文件名 33 String filename=file.getOriginalFilename(); 34 System.out.println("filename："+filename); 35 36 //获取上传路径 37 String path=request.getSession().getServletContext().getRealPath("/upload/"+filename); 38 System.out.println("path:"+path); 39 40 //创建文件流并指定写入路径 41 File destFile=new File(path); 42 43 //springmvc的方式 44 //该方法自动操作，不需要额外的去关闭IO流 45 //复制临时文件到指定文件夹下 46 try { 47 FileUtils.copyInputStreamToFile(file.getInputStream(), destFile); 48 System.out.println("上传成功"); 49 return "/success.jsp"; 50 } catch (IOException e) { 51 e.printStackTrace(); 52 System.out.println("上传失败"); 53 return "/error.jsp"; 54 } 55 }else{ 56 System.out.println("文件没有对象接到了！"); 57 return "/error.jsp"; 58 59 } 60 } 61 62 }
10.有点困，结果自己测试肯定成功
2. SpringMVC 上传文件操作
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