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SpringMVC多文件上传实例

2018-11-14 21:21 本站整理 浏览(3974)

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>