SpringMVC上传文件FileUpload的示例分析

这篇文章将为大家详细讲解有关SpringMVC上传文件FileUpload的示例分析，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。

具体内容如下

我是在已经搭建好的springMVC环境下，maven工程中的pom.xml所需要的jar包（其中spring上传文件的两个主要jar：commons-fileupload.jar和commons-io.jar）：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>com.zhihua</groupId>  <artifactId>SpringMVC_FileUpload</artifactId>  <packaging>war</packaging>  <version>0.0.1-SNAPSHOT</version>  <name>SpringMVC_FileUpload Maven Webapp</name>  <url>http://maven.apache.org</url>  <properties>    <!-- spring版本号 -->    <spring.version>3.2.8.RELEASE</spring.version>    <!-- junit版本号 -->    <junit.version>4.10</junit.version>  </properties>  <dependencies>    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>3.8.1</version>      <scope>test</scope>    </dependency>    <!-- springMVC上传文件依赖 -->    <dependency>      <groupId>commons-fileupload</groupId>      <artifactId>commons-fileupload</artifactId>      <version>1.3.1</version>    </dependency>    <!-- 添加Spring依赖 -->    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-core</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-webmvc</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-context</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-context-support</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-aop</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-aspects</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-tx</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-jdbc</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-web</artifactId>      <version>${spring.version}</version>    </dependency>    <!--spring单元测试依赖 -->    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-test</artifactId>      <version>${spring.version}</version>      <scope>test</scope>    </dependency>    <!-- jstl标签支持 -->    <dependency>      <groupId>jstl</groupId>      <artifactId>jstl</artifactId>      <version>1.2</version>    </dependency>    <!-- Servlet核心包 -->    <dependency>      <groupId>javax.servlet</groupId>      <artifactId>javax.servlet-api</artifactId>      <version>3.0.1</version>      <scope>provided</scope>    </dependency>    <!--JSP -->    <dependency>      <groupId>javax.servlet.jsp</groupId>      <artifactId>jsp-api</artifactId>      <version>2.1</version>      <scope>provided</scope>    </dependency>  </dependencies>  <build>    <finalName>SpringMVC_FileUpload</finalName>  </build></project>

在spring-mvc.xml中添加代码：

<!-- springMVC上传文件时，需要配置MultipartResolver处理器 -->  <bean id="multipartResolver"     class="org.springframework.web.multipart.commons.CommonsMultipartResolver">    <property name="defaultEncoding" value="utf-8"></property>    <property name="maxUploadSize" value="10485760000"></property>    <property name="maxInMemorySize" value="40960"></property>  </bean>

前端页面（fileUpload.jsp）和上传成功返回页面（success.jsp）:

<%@ page language="java" contentType="text/html; charset=UTF-8"  pageEncoding="UTF-8"%><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><!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>springmvc-文件上传</title></head><body>  <h2>采用流的方式上传文件</h2>  <form name="form1" action="<c:url value='/fileUpload/upload_01'/>" method="post" enctype="multipart/form-data">    <input type="file" name="file_01"/>    <input type="submit" value="fileupload"/>  </form>  <br>  <h2>采用multipart提供的file.transfer方法上传文件1</h2>  <form name="form2" action="<c:url value='/fileUpload/upload_02'/>" method="post" enctype="multipart/form-data">    <input type="file" name="file_02"/>    <input type="submit" value="fileupload"/>  </form>  <br>  <h2>采用multipart提供的file.transfer方法上传文件2</h2>  <form name="form2" action="<c:url value='/fileUpload/upload_03'/>" method="post" enctype="multipart/form-data">    <input type="file" name="file_03"/>    <input type="submit" value="fileupload"/>  </form>  <br>  <h2>使用spring MVC提供的方法上传文件</h2>  <form name="form2" action="<c:url value='/fileUpload/upload_spring'/>" method="post" enctype="multipart/form-data">    <input type="file" name="file_03"/>    <input type="submit" value="fileupload"/>  </form></body></html>

<%@ 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>  <h3>文件上传成功！</h3></body></html>

controller 的代码：

package com.zhihua.controller;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.util.Date;import java.util.Iterator;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.MultipartHttpServletRequest;import org.springframework.web.multipart.commons.CommonsMultipartFile;import org.springframework.web.multipart.commons.CommonsMultipartResolver;@Controller@RequestMapping("/fileUpload")public class FileUploadController {    @RequestMapping("/upload_01")    public String fileUpload_1(@RequestParam("file_01")CommonsMultipartFile file)throws IOException {    //用来检测程序运行时间    long startTime = System.currentTimeMillis();    System.out.println("fileName:"+file.getOriginalFilename());    try{      //获取输出流      OutputStream os = new FileOutputStream("E:/"+new Date().getTime()+file.getOriginalFilename());      //获取输入流CommonsMultipartFile中可以直接得到文件的流      InputStream is = file.getInputStream();      int temp;      //一个一个字节的读取并写入      while((temp=is.read())!=(-1)){        os.write(temp);      }      os.flush();      os.close();      is.close();    }catch(Exception e){      e.printStackTrace();    }    long endTime = System.currentTimeMillis();    System.out.println("方法一的运行时间："+String.valueOf(endTime-startTime)+"ms");    return "view/success";  }    @RequestMapping("/upload_02")  public String fileUpload_2(@RequestParam("file_02") CommonsMultipartFile file)throws IOException {    long startTime = System.currentTimeMillis();    System.out.println("fileName:"+file.getOriginalFilename());    String path = "E:/"+new Date().getTime()+file.getOriginalFilename();    File newFile = new File(path);    //通过CommonsMultipartFile 的方法直接写文件    file.transferTo(newFile);    long endTime = System.currentTimeMillis();    System.out.println("方法二的运行时间："+String.valueOf(endTime-startTime)+"ms");    return "view/success";      }    @RequestMapping("/upload_03")  public String fileUpload_3(@RequestParam(value="file_03",required=false)MultipartFile file,      HttpServletRequest request){    String path = request.getSession().getServletContext().getRealPath("upload");    System.out.println(path);    String fileName = file.getOriginalFilename();    File targetFile = new File(path,fileName);    if(!targetFile.exists()){      targetFile.mkdirs();    }    //保存    try {      file.transferTo(targetFile);    }catch(Exception e){      e.printStackTrace();    }    return "view/success";  }    @RequestMapping("/upload_spring")  public String springUpload(HttpServletRequest request)throws IllegalStateException, IOException{    long startTime = System.currentTimeMillis();    //将当前上下文初始化给 CommonsMutipartResolver (多部分解析器)    CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());    //检查form中是否有enctype="multipart/form-data"    if(multipartResolver.isMultipart(request))    {      //将request变成多request      MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest)request;      //获取multiRequest中所有的文件名      Iterator iter = multiRequest.getFileNames();      while(iter.hasNext()){        //一次遍历所有的文件        MultipartFile file = multiRequest.getFile(iter.next().toString());        if(file!=null){          String path = "E:/springUpload"+file.getOriginalFilename();          //上传          file.transferTo(new File(path));        }      }    }    long endTime = System.currentTimeMillis();    System.out.println("方法三的运行时间："+String.valueOf(endTime-startTime)+"ms");        return "view/success";  }}

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