Servlet 라이프 싸이클2

oyeon·2021년 1월 8일
0
package examples;

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

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/LifecycleServlet")
public class LifecycleServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
    
 	public LifecycleServlet() {
    		System.out.println("LifecycleServle 생성!!");
   	}
	public void init(ServletConfig config) throws ServletException {
		System.out.println("init 호출!!");
	}
	public void destroy() {
		System.out.println("destory 호출!!");
	}

	// Source -> Override/Implement Methods
	@Override
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out.println("<html>");
		out.println("<head><title>form</title></head>");
		out.println("<body>");
		out.println("<form method='post' action='/firstweb/LifecycleServlet'>");
		out.println("name : <input type='text' name='name'><br>");
		out.println("<input type='submit' value='ok'><br>");                                                 
		out.println("</form>");
		out.println("</body>");
		out.println("</html>");
		out.close();
	}

	// request : 요청이 들어왔을 때의 정보를 추상화 해서 갖고 있는 객체
	@Override
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		String name = request.getParameter("name");
		out.println("<h1> hello " + name + "</h1>");
		out.close();
	}
}
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