J2EE水果店登录购物车实验代码

dl.html!--Tochangethistemplate,chooseTools|Templatesandopenthetemplateintheeditor.--!DOCTYPEHTMLPUBLIC-//W3C//DTDHTML4.01Transitional//ENhtmllang=zhheadtitle登录/titlemetahttp-equiv=Content-Typecontent=text/html;charset=gb2312/headbodybgcolor=#FFFFFFcenter欢迎登录系统/centerformname=loginmethod=postaction=Mainlabel用户名:/labelinputtype=textname=userIDvalue=label密码:/labelinputtype=passwordname=passwordvalue=inputtype=submitname=tjvalue=提交inputtype=resetname=resetvalue=重置/form/body/htmlMain.java/**Tochangethistemplate,chooseTools|Templates*andopenthetemplateintheeditor.*/packagecom.servlet;/**Tochangethistemplate,chooseTools|Templates*andopenthetemplateintheeditor.*/importjava.io.IOException;importjava.io.PrintWriter;importjavax.servlet.ServletException;importjavax.servlet.http.HttpServlet;importjavax.servlet.http.HttpServletRequest;importjavax.servlet.http.HttpServletResponse;importjavax.servlet.RequestDispatcher;/****@authorSX-406*/publicclassMainextendsHttpServlet{/***ProcessesrequestsforbothHTTPcodeGET/codeandcodePOST/codemethods.*@paramrequestservletrequest*@paramresponseservletresponse*@throwsServletExceptionifaservlet-specificerroroccurs*@throwsIOExceptionifanI/Oerroroccurs*/protectedvoidprocessRequest(HttpServletRequestrequest,HttpServletResponseresponse)throwsServletException,IOException{response.setContentType(text/html;charset=UTF-8);PrintWriterout=response.getWriter();try{StringuserID=request.getParameter(userID);if(userID==null)userID=;Stringpassword=request.getParameter(password);if(password==null)password=;if((userID.equals(joa)&&password.equals(111111))){RequestDispatcherdispatcher=request.getRequestDispatcher(LoginSucess);dispatcher.forward(request,response);}else{RequestDispatcherdispatcher=request.getRequestDispatcher(LoginFail);dispatcher.forward(request,response);}}finally{out.close();}}//editor-folddefaultstate=collapseddesc=HttpServletmethods.Clickonthe+signonthelefttoeditthecode./***HandlestheHTTPcodeGET/codemethod.*@paramrequestservletrequest*@paramresponseservletresponse*@throwsServletExceptionifaservlet-specificerroroccurs*@throwsIOExceptionifanI/Oerroroccurs*/@OverrideprotectedvoiddoGet(HttpServletRequestrequest,HttpServletResponseresponse)throwsServletException,IOException{processRequest(request,response);}/***HandlestheHTTPcodePOST/codemethod.*@paramrequestservletrequest*@paramresponseservletresponse*@throwsServletExceptionifaservlet-specificerroroccurs*@throwsIOExceptionifanI/Oerroroccurs*/@OverrideprotectedvoiddoPost(HttpServletRequestrequest,HttpServletResponseresponse)throwsServletException,IOException{processRequest(request,response);}/***Returnsashortdescriptionoftheservlet.*@returnaStringcontainingservletdescription*/@OverridepublicStringgetServletInfo(){returnShortdescription;}///editor-fold}LoginSucess.javapackagecom.servlet;/**Tochangethistemplate,chooseTools|Templates*andopenthetemplateintheeditor.*/importjava.io.IOException;importjava.io.PrintWriter;importjavax.servlet.ServletException;importjavax.servlet.http.HttpServlet;importjavax.servlet.http.HttpServletRequest;importjavax.servlet.http.HttpServletResponse;importjavax.servlet.RequestDispatcher;/****@authorSX-406*/publicclassLoginSucessextendsHttpServlet{/***ProcessesrequestsforbothHTTPcodeGET/codeandcodePOST/codemethods.*@paramrequestservletrequest*@paramresponseservletresponse*@throwsServletExceptionifaservlet-specificerroroccurs*@throwsIOExceptionifanI/Oerroroccurs*/protectedvoidprocessRequest(HttpServletRequestrequest,HttpServletResponseresponse)throwsServletException,IOException{response.setContentType(text/html;charset=UTF-8);PrintWriterout=response.getWriter();try{Stringname=request.getParameter(userID);RequestDispatcherdispatcher=request.getRequestDispatcher(CatalogServlet);dispatcher.forward(request,response);out.println(html);out.println(head);out.println(title登录成功/title);out.println(/head);out.println(body);out.println(h1欢迎！+name+您已成功登录....../h1);out.println(/body);out.println(/html);}finally{out.close();}}//editor-folddefaultstate=collapseddesc=HttpServletmethods.Clickonthe+signonthelefttoeditthecode./***HandlestheHTTPcodeGET/codemethod.*@paramrequestservletrequest*@paramresponseservletresponse*@throwsServletExceptionifaservlet-specificerroroccurs*@throwsIOExceptionifanI/Oerroroccurs*/@OverrideprotectedvoiddoGet(HttpServletRequestrequest,HttpServletResponseresponse)throwsServletException,IOException{processRequest(request,response);}/***HandlestheHTTPcodePOST/codemethod.*@paramrequestservletrequest*@paramresponseservletresponse*@throwsServletExceptionifaservlet-specificerroroccurs*@throwsIOExceptionifanI/Oerroroccurs*/@OverrideprotectedvoiddoPost(HttpServletRequestrequest,HttpServletResponseresponse)throwsServletException,IOException{processRequest(request,response);}/***Returnsashortdescriptionoftheservlet.*@returnaStringcontainingservletdescription*/@OverridepublicStringgetServletInfo(){returnShortdescription;