SpringMVC多文件上传实例详解编程语言

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>