[Java/JSP] doGet/doPost 차이

프로그래밍/Java

[Java/JSP] doGet/doPost 차이

비전공개미 2022. 10. 31. 19:32

SMALL

말그대로 doGet은 get방식으로 받은 내용을 처리하는 칸이고, doPost는 post방식으로 받은 내용을 처리한다.

test.jsp

<%@ 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>
<form action="second" method="get 또는 post삽입">
	<input type="submit" value="실행" >
</form>
</body>
</html>

testServlet.java

package org.global.controller;

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 SecondServlet
 */
@WebServlet(name="second", urlPatterns = {"/second"})
public class SecondServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public SecondServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
     //doGet호출시
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		System.out.println("doGet() 호출");
		response.setContentType("text/html;charset=UTF8");
		PrintWriter out = response.getWriter();
		out.print("<h1>좋은하루</h1>");
		out.close();
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
     //doPost호출시
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		System.out.println("doPost() 호출");
		response.setContentType("text/html;charset=UTF-8");
		PrintWriter out = response.getWriter();
		out.print("<h1>POST방식으로 호출됨</h1>");
		out.print("<h3>좋은하루!</h3>");
		out.close();
	}

}

doGet방식으로 호출시

doPost방식으로 호출시

LIST

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