1.html/jsp主页
<%@ 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> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <% String path=request.getContextPath(); request.setAttribute("path", path); %> </head> <body> <form action="${path}/MultiUp" method="post" enctype="multipart/form-data"> <table> <tr> <td>上传文件</td> <td> <input type="file" name="fileN1" /> </td> </tr> <tr> <td>上传文件</td> <td> <input type="file" name="fileN2" /> </td> </tr> <tr> <td>上传文件</td> <td> <input type="file" name="fileN3" /> </td> </tr> <tr> <td colspan="2"> <input type="submit" /> <input type="reset" /> </td> </tr> </table> </form> </body> </html>
2.过滤器解决编码问题
package com.ser; import java.io.IOException; import javax.servlet.Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class Filter01 implements Filter { @Override public void destroy() { } @Override public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2) throws IOException, ServletException { HttpServletRequest request= (HttpServletRequest)arg0; HttpServletResponse response=(HttpServletResponse)arg1; request.setCharacterEncoding("utf-8"); response.setCharacterEncoding("utf-8"); response.setContentType("text/html charset=utf-8"); //System.out.println(">>>>>>>>>>>>"); arg2.doFilter(request, response); } @Override public void init(FilterConfig arg0) throws ServletException { } }
3.多文件上传服务器处理
package multiup; import java.io.File; import java.io.IOException; import java.util.Collection; import java.util.Collections; import javax.servlet.ServletConfig; import javax.servlet.ServletException; import javax.servlet.annotation.MultipartConfig; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.Part; import org.apache.commons.collections.CollectionUtils; /** * Servlet implementation class MultiUp */ @WebServlet("/MultiUp") @MultipartConfig(location="e://uploadFile", fileSizeThreshold=1024*1024*10, maxFileSize=1024*1024*200, maxRequestSize=1024*1024*300 ) public class MultiUp extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public MultiUp() { } @Override public void init(ServletConfig config) throws ServletException { File file = new File("e://uploadFile"); if(!file.exists()&&!file.isDirectory()) { file.mkdir(); } } /** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Collection<Part> parts= request.getParts(); StringBuffer sb=new StringBuffer(); if(!CollectionUtils.isEmpty(parts)) { for(Part part:parts) { String header=part.getHeader("content-disposition"); String filename= header.substring(header.indexOf("filename")+10,header.lastIndexOf(""")); part.write(filename); sb=sb.append(filename).append(","); } } String str =sb.toString().substring(0,sb.toString().length()-1); response.getWriter().print(str+"上传成功!"); } }