SpringMVC多檔案上傳執行個體

背景Conroller

import java.io.File;  
import java.io.FileInputStream;  
import java.io.FileOutputStream;  
import java.io.IOException;  
import java.io.PrintWriter;  
import java.io.UnsupportedEncodingException;  
import java.net.URLDecoder;  
import java.util.Date;  
import java.util.Iterator;  
  
import javax.servlet.http.HttpServletRequest;  
import javax.servlet.http.HttpServletResponse;  
import javax.swing.filechooser.FileNameExtensionFilter;  
  
import org.springframework.stereotype.Controller;  
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.MultipartFile;  
import org.springframework.web.multipart.MultipartHttpServletRequest;  
import org.springframework.web.multipart.commons.CommonsMultipartFile;  
import org.springframework.web.multipart.commons.CommonsMultipartResolver;  
import org.springframework.web.servlet.ModelAndView;  
  
  
import com.tgb.web.controller.entity.User;  
  
@Controller  
@RequestMapping("/file")  
public class UploadController {   
      
      
    @RequestMapping("/upload"   )  
    public String addUser(@RequestParam("file") CommonsMultipartFile[] files,HttpServletRequest request){  
          
        for(int i = 0;i<files.length;i++){  
            System.out.println("fileName---------->" + files[i].getOriginalFilename());  
          
            if(!files[i].isEmpty()){  
                int pre = (int) System.currentTimeMillis();  
                try {  
                    //拿到輸出流，同時重命名上傳的檔案  
                    FileOutputStream os = new FileOutputStream("H:/" + new Date().getTime() + files[i].getOriginalFilename());  
                    //拿到上傳檔案的輸入流  
                    FileInputStream in = (FileInputStream) files[i].getInputStream();  
                      
                    //以寫位元組的方式寫檔案  
                    int b = 0;  
                    while((b=in.read()) != -1){  
                        os.write(b);  
                    }  
                    os.flush();  
                    os.close();  
                    in.close();  
                    int finaltime = (int) System.currentTimeMillis();  
                    System.out.println(finaltime - pre);  
                      
                } catch (Exception e) {  
                    e.printStackTrace();  
                    System.out.println("上傳出錯");  
                }  
        }  
        }  
        return "/success";  
    }  
      
      
    @RequestMapping("/upload2"  )  
    public String upload2(HttpServletRequest request,HttpServletResponse response) throws IllegalStateException, IOException {  
        //建立一個通用的多部分解析器  
        CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());  
        //判斷 request 是否有檔案上傳,即多部分請求  
        if(multipartResolver.isMultipart(request)){  
            //轉換成多部分request    
            MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest)request;  
            //取得request中的所有檔案名  
            Iterator<String> iter = multiRequest.getFileNames();  
            while(iter.hasNext()){  
                //記錄上傳過程起始時的時間，用來計算上傳時間  
                int pre = (int) System.currentTimeMillis();  
                //取得上傳檔案  
                MultipartFile file = multiRequest.getFile(iter.next());  
                if(file != null){  
                    //取得目前上傳檔案的檔案名稱  
                    String myFileName = file.getOriginalFilename();  
                    //如果名稱不為“”,說明該檔案存在，否則說明該檔案不存在  
                    if(myFileName.trim() !=""){  
                        System.out.println(myFileName);  
                        //重命名上傳後的檔案名  
                        String fileName = "demoUpload" + file.getOriginalFilename();  
                        //定義上傳路徑  
                        String path = "H:/" + fileName;  
                        File localFile = new File(path);  
                        file.transferTo(localFile);  
                    }  
                }  
                //記錄上傳該檔案後的時間  
                int finaltime = (int) System.currentTimeMillis();  
                System.out.println(finaltime - pre);  
            }  
              
        }  
        return "/success";  
    }  
      
    @RequestMapping("/toUpload" )   
    public String toUpload() {  
          
        return "/upload";  
    }  
      
}  
           

前端頁面

<%@ 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>  
    <script type="text/javascript" src="/js/<strong>jquery-1.7.2.js</strong>"></script>  
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
    <title>Insert title here</title>  
    <script type="text/javascript">  
        i = 1;  
        j = 1;  
        $(document).ready(function(){  
              
            $("#btn_add1").click(function(){  
                document.getElementById("newUpload1").innerHTML+='<div id="div_'+i+'"><input  name="file" type="file"  /><input type="button" value="删除"  οnclick="del_1('+i+')"/></div>';  
                  i = i + 1;  
            });  
              
            $("#btn_add2").click(function(){  
                document.getElementById("newUpload2").innerHTML+='<div id="div_'+j+'"><input  name="file_'+j+'" type="file"  /><input type="button" value="删除"  οnclick="del_2('+j+')"/></div>';  
                  j = j + 1;  
            });  
        });  
      
        function del_1(o){  
         document.getElementById("newUpload1").removeChild(document.getElementById("div_"+o));  
        }  
          
        function del_2(o){  
             document.getElementById("newUpload2").removeChild(document.getElementById("div_"+o));  
        }  
      
    </script>  
    </head>  
    <body>  
      
         <h1>springMVC位元組流輸入上傳檔案</h1>   
        <form name="userForm1" action="/springMVC7/file/upload" <strong>enctype="multipart/form-data"</strong> method="post">  
            <div id="newUpload1">  
                <input type="file" name="file">  
            </div>  
              
            <input type="button" id="btn_add1" value="增加一行" >  
            <input type="submit" value="上傳" >  
        </form>   
        <br>  
        <br>  
        <hr align="left" width="60%" color="#FF0000" size="3">  
        <br>  
        <br>  
         <h1>springMVC包裝類上傳檔案</h1>   
        <form name="userForm2" action="/springMVC7/file/upload2" <strong>enctype="multipart/form-data"</strong> method="post"">  
            <div id="newUpload2">  
                <input type="file" name="file">  
            </div>  
            <input type="button" id="btn_add2" value="增加一行" >  
            <input type="submit" value="上傳" >  
              
              
        </form>   
    </body>  
    </html>