SpringMVC多文件上传实例，springmvc文件上传,后台Conroller

SpringMVC多文件上传实例，springmvc文件上传,后台Conroller

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```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>
<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>

```