package com.zs.web; import java.io.File; import java.io.IOException; import java.io.PrintWriter; 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 javax.servlet.http.HttpSession; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.ProgressListener; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import java.util.Iterator; import java.util.List; /** * Servlet implementation class FilesServlet */ @WebServlet("/FilesServlet") public class FilesServlet extends HttpServlet { private static final long serialVersionUID = 1L; File tempPathFile; /** * @see HttpServlet#HttpServlet() */ public FilesServlet() { super(); // TODO Auto-generated constructor stub } @Override protected void service(HttpServletRequest req HttpServletResponse res) throws ServletException IOException { // TODO Auto-generated method stub String uploadPath =req.getSession().getServletContext().getRealPath("/file/");// 上传文件的目录 //System.out.println(req.getSession().getServletContext().getRealPath("/")); HttpSession session = req.getSession();//使用request对象的getSession()获取session try { // Create a factory for disk-based file items DiskFileItemFactory factory = new DiskFileItemFactory(); // Set factory constraints factory.setSizeThreshold(4096); // 设置缓冲区大小，这里是4kb factory.setRepository(tempPathFile);// 设置缓冲区目录 // Create a new file upload handler ProgressListener progressListener = new ProgressListener(){ public void update(long pBytesRead long pContentLength int pItems) { System.out.println("文件个数" + pItems); if (pContentLength == -1) { System.out.println("正上传：" + pBytesRead ); } else { System.out.println("正上传" + pBytesRead + " of " + pContentLength + ""); } } }; ServletFileUpload upload = new ServletFileUpload(factory); upload.setProgressListener(progressListener); // Set overall request size constraint upload.setSizeMax(4194304); // 设置最大文件尺寸，这里是4MB List<FileItem> items = upload.parseRequest(req);// 得到所有的文件 Iterator<FileItem> i = items.iterator(); while (i.hasNext()) { FileItem fi = (FileItem) i.next(); String fileName = fi.getName(); if (fileName != null) { File fullFile = new File(new String(fi.getName().getBytes() "utf-8")); // 解决文件名乱码问题 File savedFile = new File(uploadPath fullFile.getName()); fi.write(savedFile); System.out.println(uploadPath); } } System.out.print("upload succeed"); } catch (Exception e) { System.out.println("出现错误"); } } }
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