COS上传实列

package org.aptech.servlet.upload; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import com.oreilly.servlet.multipart.*; public class DemoParserUploadServlet extends HttpServlet { private File dir; public DemoParserUploadServlet() { super(); } public void destroy() { super.destroy(); // Just puts "destroy" string in log // Put your code here } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {} public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { PrintWriter out = response.getWriter(); response.setContentType("text/plain;charset=GBK"); out.println("Demo Upload Servlet using MultipartParser"); out.println(); try { MultipartParser mp = new MultipartParser(request, 10 * 1024 * 1024); // 10MB Part part; while ((part = mp.readNextPart()) != null) { String name = part.getName(); if (part.isParam()) { // it's a parameter part ParamPart paramPart = (ParamPart) part; String value = paramPart.getStringValue(); out.println("param: name=" + name + "; value=" + value); } else if (part.isFile()) { // it's a file part FilePart filePart = (FilePart) part; String fileName = filePart.getFileName(); if (fileName != null) { // the part actually contained a file long size = filePart.writeTo(dir); out.println("file: name=" + name + "; fileName=" + fileName + ", filePath=" + filePart.getFilePath() + ", contentType=" + filePart.getContentType() + ", size=" + size); } else { // the field did not contain a file out.println("file: name=" + name + "; EMPTY"); } out.flush(); } } } catch (IOException lEx) { this.getServletContext().log(lEx, "error reading or saving file"); } } /** * Initialization of the servlet. <br> * * @throws ServletException * if an error occure */ public void init(ServletConfig config) throws ServletException { super.init(config); // Read the uploadDir from the servlet parameters String dirName = config.getInitParameter("uploadDir"); if (dirName == null) { throw new ServletException("Please supply uploadDir parameter"); } dir = new File(dirName); if (!dir.isDirectory()) { throw new ServletException("Supplied uploadDir " + dirName + " is invalid"); } } }