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>