Cấu trúc project
Creating a Java Dynamic Web Project
Creating a Java Servlet
HelloWorld.java
Servlet JSP 2018
package com.giaima;
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;
/**
* Servlet implementation class HelloWorld
*/
@WebServlet("/hello-world")
public class HelloWorld extends HttpServlet {
private static final long serialVersionUID = 1 L;
/**
* @see HttpServlet#HttpServlet()
*/
public HelloWorld() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
response.getWriter().append("Served at: ").append(request.getContextPath());
String yourName = request.getParameter("yourName");
PrintWriter writer = response.getWriter();
writer.println("<h1>Hello " + yourName + "</h1>");
writer.close();
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}Creating a JSP Page
index.jsp
Servlet JSP 2018
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<h1>Hello JSP and Servlet!</h1>
<form action="hello-world" method="post">
Enter your name: <input type="text" name="yourName" size="20">
<input type="submit" value="Call Servlet" />
</form>
</body>
</html>Result
27/10/2018
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