By GokiSoft.com|
10:50 14/11/2020|
JSP Servlet
[Share Code] Tìm hiểu JSP Servlet lớp J2010G - Lập trình JSP Servlet
#web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd">
<servlet>
<servlet-name>TestServlet</servlet-name>
<servlet-class>servlet.TestServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>TestServlet</servlet-name>
<url-pattern>/register</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
</web-app>
#fail.jsp
<%--
Document : fail.jsp
Created on : Nov 14, 2020, 8:52:42 AM
Author : teacher
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<h1>Failed!</h1>
</body>
</html>
#success.jsp
<%--
Document : success
Created on : Nov 14, 2020, 8:43:59 AM
Author : teacher
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<h1>POST DATA!</h1>
</body>
</html>
#test.jsp
<%--
Document : test
Created on : Nov 14, 2020, 8:35:57 AM
Author : teacher
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<title>JSP/Servlet Tutorial - Form Register</title>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"/>
<!-- jQuery library -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<!-- Popper JS -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<!-- Latest compiled JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>
</head>
<body>
<!-- Code java trong JSP -->
<%
//code java o day
String name = "";
if(request.getParameter("name") != null) {
name = request.getParameter("name");
}
String email = request.getParameter("email");
if(email == null) {
email = "";
}
String birthday = request.getParameter("birthday");
if(birthday == null) {
birthday = "";
}
String address = request.getParameter("address");
if(address == null) {
address = "";
}
String msg = "";
String pwdMsg = "";
if(!name.isEmpty()) {
msg = "Dang ky tai khoan error!!!";
pwdMsg = "Mat khau khong khop!!!";
}
// out.print(name);
%>
<div class="container">
<div class="panel panel-primary">
<div class="panel-heading">
<h2 class="text-center">Registation Form - Input User's Detail Information</h2>
<h3 style="color: red"><%=msg%></h3>
</div>
<div class="panel-body">
<form method="post">
<div class="form-group">
<label for="usr">Name:</label>
<input required="true" type="text" class="form-control" id="usr" name="name" value="<%=name%>"/>
</div>
<div class="form-group">
<label for="email">Email:</label>
<input required="true" type="email" class="form-control" id="email" name="email" value="<%=email%>"/>
</div>
<div class="form-group">
<label for="birthday">Birthday:</label>
<input type="date" class="form-control" id="birthday" name="birthday" value="<%=birthday%>"/>
</div>
<div class="form-group">
<label for="pwd">Password: <label style="color: red"><%=pwdMsg%></label></label>
<input required="true" type="password" class="form-control" id="pwd" name="password"/>
</div>
<div class="form-group">
<label for="confirmation_pwd">Confirmation Password:</label>
<input required="true" type="password" class="form-control" id="confirmation_pwd" name="confirm_pwd"/>
</div>
<div class="form-group">
<label for="address">Address:</label>
<input type="text" class="form-control" id="address" name="address" value="<%=address%>"/>
</div>
<button class="btn btn-success" type="submit">Register</button>
</form>
</div>
</div>
</div>
</body>
</html>#welcome.jsp
<%--
Document : welcome
Created on : Nov 14, 2020, 10:28:10 AM
Author : teacher
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Welcome Page</title>
</head>
<body>
<!-- Code java trong JSP -->
<%
//code java o day
String msg = (String) request.getAttribute("message");
String name = request.getParameter("name");
String email = request.getParameter("email");
String birthday = request.getParameter("birthday");
String address = request.getParameter("address");
// out.print(name);
%>
<h1><%=msg%></h1>
<h1>Welcome <%=name%>!</h1>
<ul>
<li>Name: <% out.print(name); %></li>
<li>Email: <%=email%></li>
<li>Birthday: <%=birthday%></li>
<li>Address: <%=address%></li>
</ul>
</body>
</html>
#TestServlet.java
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
*
* @author teacher
*/
public class TestServlet extends HttpServlet {
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP <code>GET</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/test.jsp");
dispatcher.forward(request, response);
}
/**
* Handles the HTTP <code>POST</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String name = request.getParameter("name");
String email = request.getParameter("email");
String birthday = request.getParameter("birthday");
String password = request.getParameter("password");
String confirmPwd = request.getParameter("confirm_pwd");
String address = request.getParameter("address");
//day vao CSDL nhu the nao.
System.out.println("address: " + address);
if(email.isEmpty() || !password.equals(confirmPwd)) {
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/test.jsp");
dispatcher.forward(request, response);
return;
}
//POST
String msg = "Dang ky tai khoan thanh cong!!!";
request.setAttribute("message", msg);
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/welcome.jsp");
dispatcher.forward(request, response);
}
/**
* Returns a short description of the servlet.
*
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}
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