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<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>home.jsp 파일 입니다.</h1>
<p>주소 설계: http://localhost:8080/demo_3/home.jsp</p>
</body>
</html>
package com.tenco;
import java.io.IOException;
import java.io.PrintWriter;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
@WebServlet(name = "echo2", urlPatterns = {"/echo2"})
public class Echo2 extends HttpServlet {
public Echo2() {
super();
}
// get 요청 방식
// http://localhost:8080/demo_3/echo2
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
// request -> req(
System.out.println("doGet 메서드 호출 확인 ");
// 자바.io 객체 (스트림 통해 데이터를 넣을 예정)
PrintWriter pw = resp.getWriter();
pw.print("<!DOCTYPE html>");
pw.print("<html lang=\"en\">");
pw.print("<head>");
pw.print(" <meta charset=\"UTF-8\">");
pw.print(" <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">");
pw.print(" <title>Document</title>");
pw.print("</head>");
pw.print("<body>");
pw.print("<section>");
pw.print("<p style=\"color: red;\" >Hello First Srvlet 반가워</p>");
pw.print("</section>");
pw.print("</body>");
pw.print("</html>");
resp.setContentType("text/html; charset=utf-8");
}
// post 요청 방식
// http://localhost:8080/demo_3/echo2
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
// TODO Auto-generated method stub
super.doPost(req, resp);
}
}package com.tenco;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.io.IOException;
@WebServlet(name = "echo", urlPatterns = { "/echo" })
public class Echo extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public Echo() {
super();
}
@Override
public void init() throws ServletException {
System.out.println("Echo 서블릿 클래스가 --> 컴파일 --> .class 파일로 변환");
System.out.println("init() 메서드는 인스턴스화 될 때 딱 한번 호출 되는 메서드");
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.getWriter().append("Served at: ").append(request.getContextPath());
}
// POST 요청시 동작 하는 메서드
// 주소 설계
// http://localhost:8080/demo_3/echo
protected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
}
}
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>home.jsp 파일 입니다.</h1>
<p>주소 설계: http://localhost:8080/demo_3/home.jsp</p>
</body>
</html>package com.tenco;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.io.IOException;
@WebServlet(name = "echo", urlPatterns = { "/echo" })
public class Echo extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public Echo() {
super();
}
@Override
public void init() throws ServletException {
System.out.println("Echo 서블릿 클래스가 --> 컴파일 --> .class 파일로 변환");
System.out.println("init() 메서드는 인스턴스화 될 때 딱 한번 호출 되는 메서드");
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.getWriter().append("Served at: ").append(request.getContextPath());
}
// POST 요청시 동작 하는 메서드
// 주소 설계
// http://localhost:8080/demo_3/echo
protected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
System.out.println("안녕 서버측 콘솔에서 출력을 합니다.");
}
@Override
public void destroy() {
System.out.println("메모리에서 내려갈 때 호출되는 메서드");
}
}728x90
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