SpringMVC多文件上传实例

后台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 {                      //拿到输出流，同时重命名上传的文件                      FileOutputStream os = new FileOutputStream("H:/" + new Date().getTime() + files[i].getOriginalFilename());                      //拿到上传文件的输入流                      FileInputStream in = (FileInputStream) files[i].getInputStream();                                            //以写字节的方式写文件                      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("上传出错");                  }          }          }          return "/success";      }                  @RequestMapping("/upload2"  )      public String upload2(HttpServletRequest request,HttpServletResponse response) throws IllegalStateException, IOException {          //创建一个通用的多部分解析器          CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());          //判断 request 是否有文件上传,即多部分请求          if(multipartResolver.isMultipart(request)){              //转换成多部分request                MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest)request;              //取得request中的所有文件名              Iterator<String> iter = multiRequest.getFileNames();              while(iter.hasNext()){                  //记录上传过程起始时的时间，用来计算上传时间                  int pre = (int) System.currentTimeMillis();                  //取得上传文件                  MultipartFile file = multiRequest.getFile(iter.next());                  if(file != null){                      //取得当前上传文件的文件名称                      String myFileName = file.getOriginalFilename();                      //如果名称不为“”,说明该文件存在，否则说明该文件不存在                      if(myFileName.trim() !=""){                          System.out.println(myFileName);                          //重命名上传后的文件名                          String fileName = "demoUpload" + file.getOriginalFilename();                          //定义上传路径                          String path = "H:/" + fileName;                          File localFile = new File(path);                          file.transferTo(localFile);                      }                  }                  //记录上传该文件后的时间                  int finaltime = (int) System.currentTimeMillis();                  System.out.println(finaltime - pre);              }                        }          return "/success";      }            @RequestMapping("/toUpload" )       public String toUpload() {                    return "/upload";      }        }  

前端页面

    <%@ 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"  onclick="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"  onclick="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字节流输入上传文件</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="上传" >          </form>           <br>          <br>          <hr align="left" width="60%" color="#FF0000" size="3">          <br>          <br>           <h1>springMVC包装类上传文件</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="上传" >                                      </form>       </body>      </html>