SpringMVC文件上传（eclipse）

工程目录

springmvc.xml 配置文件

<?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:p="http://www.springframework.org/schema/p"        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-4.3.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.xsd         ">        <!-- 扫描注解包 -->        <context:component-scan base-package="com.spring.controller"></context:component-scan>        <!-- 允许访问静态资源 -->        <mvc:resources location="/js/" mapping="/js/*"></mvc:resources>        <!-- 创建适配器和映射器 -->        <mvc:annotation-driven></mvc:annotation-driven>      <!-- 4 逻辑视图，配置返回器的前后缀 -->        <!-- 把modelAndView对象的逻辑视图解析为物理视图 前缀+逻辑视图+后缀= 物理视图 -->        <bean               class="org.springframework.web.servlet.view.InternalResourceViewResolver">               <property name="suffix" value=".jsp"></property>               <property name="prefix" value="/"></property>        </bean>               <!-- 文件上传解析器 -->          <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"></bean>        </beans>

UploadController 控制器（两种写法）

package com.spring.controller; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import javax.servlet.http.HttpServletRequest; 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.multipart.commons.CommonsMultipartFile; //标记成控制器 @Controller public class UploadController {        // 指定执行的方法,地址栏输入值        @RequestMapping("/upload")        public String upload(@RequestParam(value="file")CommonsMultipartFile file, HttpServletRequest request)                      throws IOException {               // 声明解析器,传入参数就是上传的文件               // 以流的形式上传               // 获得服务端文件上传到的地址               String patch = request.getServletContext().getRealPath("/uploadimages");               // 创建服务端文件上传的目录               File dir = new File(patch);               dir.mkdirs();               // 获取文件上传文件的名称               String filename = file.getOriginalFilename();                             // 以流的形式吧文件读取到java并写到目录               byte fileb[] = new byte[20 * 1024];               // 定义文件读取流获取上传的文件               InputStream input = file.getInputStream();               //声明服务端文件               File outfile= new File(patch,filename);               // 写入服务器磁盘文件               FileOutputStream out = new FileOutputStream(outfile);               // 实际读取到的字节               int len = 0;               while ((len = input.read(fileb)) != -1) {// 把文件读到数组总                      out.write(fileb, 0, len);               }               System.out.println("上传文件成功！服务端路径是：\t"+outfile.getAbsolutePath());                             // 关闭流               out.close();               input.close();               return "main";        }        //方法2：标记成控制器        @RequestMapping("/upload1")        public String upload1(@RequestParam(value="file") MultipartFile file,HttpServletRequest request) throws IOException{//参数就是上传的文件对象               //得到服务端保存图片的地址               String path = request.getServletContext().getRealPath("/upload");               File dir = new File(path);               dir.mkdir();                             //得到上传的文件名称               String fileName =  file.getOriginalFilename();                             //把客户端图片保存到服务端               file.transferTo(new File(path,fileName));               System.out.println("上传文件成功！");               return "main";        }        }

JSP页面2个

<%@ 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>文件上传</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>         <!--               文件上传：                 method：post                 enctype：multipart/form-data                 type="file"                -->                <form action="${pageContext.request.contextPath }/upload" enctype="multipart/form-data" method="post">                    <input type="file" name="file">                    <input type="submit" value="上传">                </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>上传文件成功！</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>    文件上传成功   </body> </html>