joinProcessServlet.java

package com.shop.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;

import com.shop.model.joinDAO;

@WebServlet("/join.do")
public class joinProcessServlet extends HttpServlet {
 private static final long serialVersionUID = 1L;

    public joinProcessServlet() {
        super();
    }

 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
  //요청 처리후 응답을 위한 마임타입과 문자셋 설정
  response.setContentType("text/html;charset=utf-8");
  //응답 결과를 클라이언트에게 보내기 위해서 문자스트림을 생성
  PrintWriter out = response.getWriter();
  String cmd = request.getParameter("command");
  if(cmd.equals("idcheck")){
   idCheck(request, response);
  } else {
   joinProc(request, response);
  }
 }
 
 joinDAO dao;
 
 protected void idCheck(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
  response.setContentType("text/html;charset=utf-8");
  PrintWriter out = response.getWriter();
  dao = new joinDAO();
  String uid = request.getParameter("userid");
  boolean success = dao.dupIdCheck(uid);
  if(dao.dupIdCheck(uid)){
   out.println("이미 사용중인 아이디입니다.");
  } else {
   out.println("사용 가능한 아이디입니다.");
  }
 }
 
 protected void joinProc(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
  
 }
}