springmvc文件上传下载

最新推荐文章于 2025-09-13 09:06:35 发布

转载最新推荐文章于 2025-09-13 09:06:35 发布 · 69 阅读

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原文链接：http://www.cnblogs.com/antis/p/5464565.html

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#java #测试

springmvc文件上传下载

原文 http://luoqi-email.iteye.com/blog/2122849

主题 Spring MVC HTML

在网上搜索的代码参考整理了一份

需要使用的jar、

commons-fileupload.jar与commons-io-1.4.jar二个文件 1、表单属性为: enctype="multipart/form-data"

2、springmvc配置

<?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/beans  http://www.springframework.org/schema/beans/spring-beans.xsd  http://www.springframework.org/schema/context  http://www.springframework.org/schema/context/spring-context-3.2.xsd  http://www.springframework.org/schema/mvc  http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">   <!-- 扫描包 --> <context:component-scan base-package="com.ai.customer" /> <!-- 启动注解 --> <mvc:annotation-driven /> <!-- 文件上传 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <!-- 设置上传文件的最大尺寸为10MB --> <property name="maxUploadSize"> <value>10000000</value> </property> </bean> <!-- 静态文件访问 --> <mvc:default-servlet-handler/> <!-- 对模型视图名称的解析，即在模型视图名称添加前后缀 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" > <property name="prefix" value="/"/> <property name="suffix" value=".jsp"/> </bean> </beans>

2、上传下载功能代码

package com.ai.customer.controller;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.fileupload.FileUpload; import org.apache.commons.io.FileUtils; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.servlet.ModelAndView; @Controller public class FileUploadController {  /*  * SpringMVC中的文件上传  * @第一步：由于SpringMVC使用的是commons-fileupload实现，故将其组件引入项目中  * @这里用到的是commons-fileupload-1.2.1.jar和commons-io-1.3.2.jar  * @第二步：spring-mvx中配置MultipartResolver处理器。可在此加入对上传文件的属性限制  * <bean id="multipartResolver"  * class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  * <!-- 设置上传文件的最大尺寸为10MB -->  * <property name="maxUploadSize">  * <value>10000000</value>  * </property>  * </bean>  * 第三步：在Controller的方法中添加MultipartFile参数。该参数用于接收表单中file组件的内容  *第四步：编写前台表单。注意enctype="multipart/form-data"以及<input type="file" name="****"/>  * 如果是单个文件 直接使用MultipartFile 即可  */  @RequestMapping("/upload.do")  public ModelAndView upload(String name,    //上传多个文件    @RequestParam("file") MultipartFile[] file,    HttpServletRequest request) throws IllegalStateException,    IOException {     //获取文件 存储位置   String realPath = request.getSession().getServletContext()     .getRealPath("/uploadFile");     File pathFile = new File(realPath);     if (!pathFile.exists()) {    //文件夹不存 创建文件    pathFile.mkdirs();   }   for (MultipartFile f : file) {       System.out.println("文件类型："+f.getContentType());    System.out.println("文件名称："+f.getOriginalFilename());    System.out.println("文件大小:"+f.getSize());    System.out.println(".................................................");    //将文件copy上传到服务器    f.transferTo(new File(realPath + "/" + f.getOriginalFilename()));    //FileUtils.copy   }   //获取modelandview对象   ModelAndView view = new ModelAndView();   view.setViewName("redirect:index.jsp");   return view;  }    @RequestMapping(value = "download.do")  public ModelAndView download(HttpServletRequest request,    HttpServletResponse response) throws Exception { // String storeName = "Spring3.xAPI_zh.chm";   String storeName="房地.txt";   String contentType = "application/octet-stream";   FileUploadController.download(request, response, storeName, contentType);   return null;  }    //文件下载 主要方法  public static void download(HttpServletRequest request,    HttpServletResponse response, String storeName, String contentType   ) throws Exception {     request.setCharacterEncoding("UTF-8");   BufferedInputStream bis = null;   BufferedOutputStream bos = null;   //获取项目根目录   String ctxPath = request.getSession().getServletContext()    .getRealPath(""); //获取下载文件露肩 String downLoadPath = ctxPath+"/uploadFile/"+ storeName; //获取文件的长度 long fileLength = new File(downLoadPath).length(); //设置文件输出类型 response.setContentType("application/octet-stream"); response.setHeader("Content-disposition", "attachment; filename=" + new String(storeName.getBytes("utf-8"), "ISO8859-1")); //设置输出长度 response.setHeader("Content-Length", String.valueOf(fileLength)); //获取输入流 bis = new BufferedInputStream(new FileInputStream(downLoadPath)); //输出流 bos = new BufferedOutputStream(response.getOutputStream()); byte[] buff = new byte[2048]; int bytesRead; while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) { bos.write(buff, 0, bytesRead); } //关闭流 bis.close(); bos.close(); } }

3、上传页面

<%@ page language="java" contentType="text/html; charset=UTF-8"
  pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body>  <form action="upload.do" method="post" enctype="multipart/form-data">    <input type="text" name="name" />   <br>   <input type="file" name="file">   <br>   <input type="file" name="file" />     <input type="submit" value="提交">  </form> </body> </html>