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2012.06.13 jQuery Ajax - getJSON예제[실습]

jQuery Ajax - getJSON예제[실습]

프로그래밍/jQuery 2012. 6. 13. 13:42

package jquery.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import jquery.dto.MemberDTO;
import jquery.service.MemberService;

import org.json.JSONObject;

public class GetServlet extends HttpServlet {

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 doPost(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 request.setCharacterEncoding("UTF-8");
 String cmd = request.getParameter("command");

 System.out.println(cmd);
 if(cmd.equals("getJSON")){
 getJSON(request,response);
 }else if(cmd.equals("getData")){
 getData(request, response);
 }else if(cmd.equals("run")){
 run(request, response);
 }else if(cmd.equals("getMemberById")){
 getMemberById(request, response);
 }else if(cmd.equals("getMemberByIdJson")){
 getMemberByIdJson(request, response);
 }
}
protected void getMemberById(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 //1. 요처파라미터 조회
 String id = request.getParameter("id");
 //2. B.L. 호출
 MemberService ms = new MemberService();
 MemberDTO mdto = ms.getMemberById(id);
 //3. 응답
 String str = "id : "+mdto.getId()+" 이름 : "+mdto.getName()+" 나이 : "+mdto.getAge();

 response.setContentType("text/html;charset=UTF-8");
 response.setHeader("Cache-Control", "no-cache");
 PrintWriter out = response.getWriter();
 out.println(str);
 out.close();
}
protected void getMemberByIdJson(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 //1. 요처파라미터 조회
 String id = request.getParameter("id");
 //2. B.L. 호출
 MemberService ms = new MemberService();
 MemberDTO mdto = ms.getMemberById(id);
 //3. 응답
 //JSONObject - JSON 객체 형태의 문자열(string)생성
 JSONObject jObj = new JSONObject(mdto);
 response.setContentType("text/html;charset=UTF-8");
 response.setHeader("Cache-Control", "no-cache");
 PrintWriter out = response.getWriter();
 out.println(jObj.toString());
 out.close();
}
protected void run(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 String id = request.getParameter("id");
 String name=request.getParameter("name");
 String isSend = request.getParameter("isSend");
 String number = request.getParameter("number");
 String str = id+", "+name+", "+isSend+", "+number;
 System.out.println(str);
 response.setContentType("text/html;charset=UTF-8");
 response.setHeader("Cache-Control", "no-cache");
 PrintWriter out = response.getWriter();
 out.println(str);
 out.close();
}
protected void getData(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 response.setContentType("text/html;charset=UTF-8");
 response.setHeader("Cache-Control", "no-cache");
 PrintWriter out = response.getWriter();
 out.println("이것이 답입니다. 요청방식 : "+request.getMethod());
 out.close();
}
protected void getJSON(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
 HashMap map = new HashMap();
 map.put("id", "abcde");
 map.put("name", "홍길동");
 map.put("age", 30);
 JSONObject jObj = new JSONObject(map);

 response.setContentType("text/html;charset=UTF-8");
 response.setHeader("Cache-Control", "no-cache");
 PrintWriter out = response.getWriter();
 out.println(jObj.toString());
 out.close();
}

}

* 결과

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