JSON 라이브러리 사용 서블릿

[sj_bomber]

package pack;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import org.json.simple.*;

public class JsonMake extends javax.servlet.http.HttpServlet implements
  javax.servlet.Servlet {
 protected void doGet(HttpServletRequest request,
   HttpServletResponse response) throws ServletException, IOException {
  request.setCharacterEncoding("EUC-KR");

  String sabun = new String((request.getParameter("sabun")).getBytes("8859_1"),"euc-kr");
  String irum = new String((request.getParameter("irum")).getBytes("8859_1"),"euc-kr");
  String juso = new String((request.getParameter("juso")).getBytes("8859_1"),"euc-kr");
  
  response.setContentType("text/xml; charset=euc-kr");
  response.setHeader("Cache-control", "no-cache");

  if (sabun != null && irum != null && juso != null) {
  // String jsonStr = createJson(sabun,irum,juso);
  // String jsonStr = createJson2(sabun,irum,juso);
   String jsonStr = createJson3(sabun,irum,juso);
   response.getWriter().write(jsonStr);
  } else {
   response.getWriter().write("?");
  }
 }

 private String createJson(String sabun, String irum, String juso) {
  StringBuffer sb = new StringBuffer("\r\n{\"jikwon\":");
  sb.append("\r\n{\"sabun\":\""+sabun+"\",");
  sb.append("\r\n\"irum\":\""+irum+"\",");
  sb.append("\r\n\"juso\":\""+juso+"\"}");
  sb.append("\r\n}");
  return sb.toString();
 }
 
//jsonObject 라이브러리 이용 
 private String createJson2(String sabun, String irum, String juso) {
    JSONObject obj=new JSONObject();
    JSONObject obj1=new JSONObject();
   
    obj.put("sabun",sabun);
    obj.put("irum",irum);
    obj.put("juso",juso);
    obj1.put("jikwon", obj);
    System.out.print(obj1.toString());
    //result : {"jikwon":{"irum":"한국인","juso":"서울시 중구","sabun":"10"}}
  return obj1.toString();
 }
//jsonArray 
 private String createJson3(String sabun, String irum, String juso) {
   JSONObject obj1=new JSONObject();
   JSONArray array=new JSONArray();
   for(int i=0;i<2;i++){

   JSONObject obj=new JSONObject();
   obj.put("sabun",sabun);
   obj.put("irum",irum);
   obj.put("juso",juso);
   array.add(obj);//see above
   }
   obj1.put("jikwon", array);
   System.out.println(obj1.toString());
   //result : {"jikwon":[{"irum":"한국인","juso":"서울시 중구","sabun":"10"},{"irum":"한국인","juso":"서울시 중구","sabun":"10"}]}
   return obj1.toString();
 } 
}