一个简单的JSP+Servlet图片上传例子

package com.qhit.action; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.jspsmart.upload.File; import com.jspsmart.upload.Files; import com.jspsmart.upload.SmartUpload; import com.jspsmart.upload.SmartUploadException; public class ImageUpload extends HttpServlet { /** * */ private static final long serialVersionUID = 1L; /** * The doGet method of the servlet. <br> * * This method is called when a form has its tag value method equals to get. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doPost(request,response); } /** * The doPost method of the servlet. <br> * * This method is called when a form has its tag value method equals to post. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */ @SuppressWarnings("static-access") public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { SmartUpload upload = new SmartUpload(); upload.initialize(this.getServletConfig(), request, response); try{ upload.upload(); }catch(Exception e){ e.printStackTrace(); } long fl = (new java.util.Date()).getTime(); Files fs = upload.getFiles(); File f = fs.getFile(0); try { f.saveAs("/img/" + fl + ".jpg", f.SAVEAS_AUTO); } catch (SmartUploadException e) { e.printStackTrace(); } request.getRequestDispatcher("showImage.jsp?imgName=" + fl).forward(request, response); } }