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SpringMVC上传文件FileUpload使用方法详解

本文实例为大家分享了SpringMVC上传文件FileUpload的具体代码,供大家参考,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>
  <h1>采用流的方式上传文件</h1>
  <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>
  <h1>采用multipart提供的file.transfer方法上传文件1</h1>
  <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>
  <h1>采用multipart提供的file.transfer方法上传文件2</h1>
  <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>
  <h1>使用spring MVC提供的方法上传文件</h1>
  <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>
  <h2>文件上传成功!</h2>
</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 {

  /**
   * 通过流的方式上传文件
   * @RequestParam("file") 将name=file控件得到的文件封装成CommonsMultipartFile 对象
   * <请替换成功能描述> <br>
   * <请替换成详细描述>
   * @param file
   * @return
   * @author caizh
   * @since [1.0.0]
   * @version [1.0.0,2017年2月5日]
   */
  @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";
  }

  /**
   * 采用file.Transto 来保存上传的文件
   * <请替换成功能描述> <br>
   * <请替换成详细描述>
   * @param file
   * @return
   * @throws IOException
   * @author caizh
   * @since [1.0.0]
   * @version [1.0.0,2017年2月5日]
   */
  @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";    
  }

  /**
   * 使用MultipartFile上传文件
   * <请替换成功能描述> <br>
   * <请替换成详细描述>
   * @param file
   * @return
   * @author caizh
   * @since [1.0.0]
   * @version [1.0.0,2017年2月5日]
   */
  @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";
  }

  /**
   * 采用spring提供的上传文件的方法
   * <请替换成功能描述> <br>
   * <请替换成详细描述>
   * @param request
   * @return
   * @throws IllegalStateException
   * @throws IOException
   * @author caizh
   * @since [1.0.0]
   * @version [1.0.0,2017年2月5日]
   */
  @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";
  }

}

好了,全部代码都给出了,博主是测试成功了,感兴趣的朋友可以去比较不同上传方式的效率!

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