stringMVC_09文件批量上传

时间：2023-03-08 21:59:20

一.思路

　　在文件上传的基础上引入数组可以实现批量上传,只需要更改一下前段页面和controller类即可

　　文件上传: https://www.cnblogs.com/aihuadung/p/10167507.html

二.实现

　　在文件上传的基础上更改fileupload.jsp

    <form action="batchupload.do" method="post" enctype="multipart/form-data">

        文件上传:<input type="file" name="file" value="选择文件"/><br/>

        文件上传:<input type="file" name="file" value="选择文件"/><br/>

        <input type="submit" value="submit"/>

    </form>

　　

　　创建HelloController类

package com.ahd.controller;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;

import org.springframework.ui.ModelMap;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.RequestParam;

import org.springframework.web.multipart.commons.CommonsMultipartFile;

@Controller

public class HelloController5{

    @RequestMapping("/batchupload")

    public String upload(@RequestParam("file")CommonsMultipartFile []files,HttpServletRequest req,ModelMap mm) throws IOException{

        //获取上传路径

        String path=req.getRealPath("upload");

        InputStream is=null;

        OutputStream os=null;

        for(CommonsMultipartFile file:files){

            //获取文件名称

            String filename=file.getOriginalFilename();

            is = file.getInputStream();

            os = new FileOutputStream(new File(path,filename));

            byte[]b=new byte[1024];

            int len=0;

            while((len=is.read(b))!=-1){

                os.write(b, 0, len);

            }

        }

        is.close();

        os.close();

        mm.addAttribute("msg", "文件上传成功");

        return "success";

    }

}

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