[스프링부트(Spring Boot)]3.Servlet

손영민

Apr 14, 2025

POST MAN 사용법

인텔리제이

JaKarta EE로

build system:Gradle설정으로 프로젝트 하나 만들고

위에 처럼 클래스 만들고


@Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        System.out.println("doGet");

        resp.setContentType("text/html");
        PrintWriter out = resp.getWriter(); // auto flush 적용되어 있음.
        out.print("<html>");
        out.print("<body>");
        out.print("<h1>doGet</h1>");
        out.print("</body>");
        out.println("</html>");
    }

doGet


@Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        System.out.println("doPost");

        resp.setStatus(201);
    }

doPost


@Override
    protected void doPut(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        System.out.println("doPut");

        Cookie cookies = new Cookie("c03", "apple");
        Cookie cookies2 = new Cookie("c04", "banana");
        resp.addCookie(cookies);
        resp.addCookie(cookies2);
        //set Cookies c03=apple;c04=banana
    }

doPut


 @Override
    protected void doDelete(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        System.out.println("doDelete");

        resp.setStatus(302); //해당 Locatoin으로 이동해
        resp.setHeader("Location", "http://www.naver.com/");
    }
}

doDelete

리퀘스트 약간배운거 정리하기


package org.example.demo5;

import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.Cookie;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

import java.io.IOException;
import java.io.PrintWriter;

@WebServlet("*.do")
public class DemoServlet extends HttpServlet {


    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        System.out.println("doGet");

        resp.setContentType("text/html");
        PrintWriter out = resp.getWriter(); // auto flush 적용되어 있음.
        out.print("<html>");
        out.print("<body>");
        out.print("<h1>doGet</h1>");
        out.print("</body>");
        out.println("</html>");
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        System.out.println("doPost");

        resp.setStatus(201);
    }

    @Override
    protected void doPut(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        System.out.println("doPut");

        Cookie cookies = new Cookie("c03", "apple");
        Cookie cookies2 = new Cookie("c04", "banana");
        resp.addCookie(cookies);
        resp.addCookie(cookies2);
        //set Cookies c03=apple;c04=banana
    }

    @Override
    protected void doDelete(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        System.out.println("doDelete");

        resp.setStatus(302); //해당 Locatoin으로 이동해
        resp.setHeader("Location", "http://www.naver.com/");
    }
}

@Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { System.out.println("doGet"); resp.setContentType("text/html"); PrintWriter out = resp.getWriter(); // auto flush 적용되어 있음. out.print("<html>"); out.print("<body>"); out.print("<h1>doGet</h1>"); out.print("</body>"); out.println("</html>"); }

@Override protected void doPut(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { System.out.println("doPut"); Cookie cookies = new Cookie("c03", "apple"); Cookie cookies2 = new Cookie("c04", "banana"); resp.addCookie(cookies); resp.addCookie(cookies2); //set Cookies c03=apple;c04=banana }

@Override protected void doDelete(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { System.out.println("doDelete"); resp.setStatus(302); //해당 Locatoin으로 이동해 resp.setHeader("Location", "http://www.naver.com/"); } }

package org.example.demo5; import jakarta.servlet.ServletException; import jakarta.servlet.annotation.WebServlet; import jakarta.servlet.http.Cookie; import jakarta.servlet.http.HttpServlet; import jakarta.servlet.http.HttpServletRequest; import jakarta.servlet.http.HttpServletResponse; import java.io.IOException; import java.io.PrintWriter; @WebServlet("*.do") public class DemoServlet extends HttpServlet { @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { System.out.println("doGet"); resp.setContentType("text/html"); PrintWriter out = resp.getWriter(); // auto flush 적용되어 있음. out.print("<html>"); out.print("<body>"); out.print("<h1>doGet</h1>"); out.print("</body>"); out.println("</html>"); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { System.out.println("doPost"); resp.setStatus(201); } @Override protected void doPut(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { System.out.println("doPut"); Cookie cookies = new Cookie("c03", "apple"); Cookie cookies2 = new Cookie("c04", "banana"); resp.addCookie(cookies); resp.addCookie(cookies2); //set Cookies c03=apple;c04=banana } @Override protected void doDelete(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { System.out.println("doDelete"); resp.setStatus(302); //해당 Locatoin으로 이동해 resp.setHeader("Location", "http://www.naver.com/"); } }