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）：

  4.0.0
  com.zhihua
  SpringMVC_FileUpload
  war
  0.0.1-SNAPSHOT
  SpringMVC_FileUpload Maven Webapp
  http://maven.apache.org
  
    
    3.2.8.RELEASE
    
    4.10
  
  
    
      junit
      junit
      3.8.1
      test
    
    
    
      commons-fileupload
      commons-fileupload
      1.3.1
    
    
    
      org.springframework
      spring-core
      ${spring.version}
    
    
      org.springframework
      spring-webmvc
      ${spring.version}
    
    
      org.springframework
      spring-context
      ${spring.version}
    
    
      org.springframework
      spring-context-support
      ${spring.version}
    
    
      org.springframework
      spring-aop
      ${spring.version}
    
    
      org.springframework
      spring-aspects
      ${spring.version}
    
    
      org.springframework
      spring-tx
      ${spring.version}
    
    
      org.springframework
      spring-jdbc
      ${spring.version}
    
    
      org.springframework
      spring-web
      ${spring.version}
    
    
    
      org.springframework
      spring-test
      ${spring.version}
      test
    
    
    
      jstl
      jstl
      1.2
    
    
    
      javax.servlet
      javax.servlet-api
      3.0.1
      provided
    
    
    
      javax.servlet.jsp
      jsp-api
      2.1
      provided
    
  
  
    SpringMVC_FileUpload
  

在spring-mvc.xml中添加代码：

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" %>







  采用流的方式上传文件
  
  

  采用multipart提供的file.transfer方法上传文件1
  
  

  采用multipart提供的file.transfer方法上传文件2
  
  

  使用spring MVC提供的方法上传文件
  

<%@ page language="java" contentType="text/html; charset=UTF-8"
  pageEncoding="UTF-8"%>







  文件上传成功！

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";
  }

}

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！

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。