package com.servlet; import java.io.File; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Iterator; import java.util.List; import java.util.UUID; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; /** * Servlet implementation class UploadServlet */ @WebServlet(name="UploadServlet",urlPatterns="/UploadServlet") public class UploadServlet extends HttpServlet { private static final long serialVersionUID = -6483558339095298703L; /** * @see HttpServlet#HttpServlet() */ public UploadServlet() { super(); // TODO Auto-generated constructor stub } /** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub response.getWriter().append("Served at: ").append(request.getContextPath()); } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("获取session，可以根据这个session进行一些其他的判断" + request.getSession().getId()); SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMdd"); String remotePath = File.separator + "download" + File.separator + sdf.format(new Date()) + File.separator; String savePath = remotePath; File dfile = new File(savePath); if (!dfile.exists()) { dfile.mkdirs(); } DiskFileItemFactory fac = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(fac); upload.setHeaderEncoding("UTF-8"); List<FileItem> fileList = null; try { fileList = upload.parseRequest(request); } catch (FileUploadException ex) { return; } Iterator<FileItem> it = fileList.iterator(); String name = ""; String extName = ""; while (it.hasNext()) { FileItem item = it.next(); if (!item.isFormField()) { name = item.getName(); long size = item.getSize(); String type = item.getContentType(); System.out.println("文件=" + name + " " + size + " " + type); if (name == null || name.trim().equals("")) { continue; } // 扩展名格式： if (name.lastIndexOf(".") >= 0) { extName = name.substring(name.lastIndexOf(".")); } File file = null; do { // 生成文件名： name = UUID.randomUUID().toString(); file = new File(savePath + name + extName); } while (file.exists()); File saveFile = new File(savePath + name + extName); try { item.write(saveFile); } catch (Exception e) { e.printStackTrace(); } }else if(item.isFormField()){ System.out.println("表单内容：" + item.getFieldName() + "=" + new String(item.getString().getBytes("iso8859-1"),"utf-8")); } } String requestPath = remotePath + name + extName; request.getSession().setAttribute(requestPath, requestPath); response.getWriter().write(savePath + name + extName); } }
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