Example:Java讀JSON

Requirement
從JSON的官網中,找出相對應的程式語言的套件(我是用這套org.json)

Implementation

import org.json.*;

public class Main {

public static void main(String[] args) {
 // TODO Auto-generated method stub
 GenerateJSON myJsonString = new GenerateJSON();
 JSONObject tempObj = null;

 try {
  JSONObject jsonObj = new JSONObject(myJsonString.generateJSON());
  tempObj = new JSONObject(jsonObj.get("UserProfile").toString());
  System.out.println("/*------------UserProfile---------------*/");
  System.out.print(tempObj.get("userName") + "   ");
  System.out.print(tempObj.get("password") + "   ");
  System.out.print(tempObj.get("sex"));
  System.out.println();

  System.out.println("/*------------MoneyPlan---------------*/");
  JSONObject moneyPlan = new JSONObject(jsonObj.get("MoneyPlan")
    .toString());
  tempObj = new JSONObject(moneyPlan.get("Monday").toString());
  System.out.print("[Monday]");
  System.out.print(tempObj.get("dinner") + "\t");
  System.out.print(tempObj.get("breakfast") + "\t");
  System.out.print(tempObj.get("lunch") + "\n");

  tempObj = new JSONObject(moneyPlan.get("Tuesday").toString());
  System.out.print("[Tuesday]");
  System.out.print(tempObj.get("dinner") + "\t");
  System.out.print(tempObj.get("breakfast") + "\t");
  System.out.print(tempObj.get("lunch") + "\n");
 } catch (JSONException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
 }

}
}

import org.json.*;
//{
// "MoneyPlan":{
//  "Monday":{
//   "dinner":"100",
//   "breakfast":"50",
//   "lunch":"100"
//  },
//  "Tuesday":{
//   "dinner":"200",
//   "breakfast":"55",
//   "lunch":"150"
//  }
// },
// "UserProfile":{
//  "userName":"aaa",
//  "password":"bbb",
//  "Sex":"Boy"
// }
//}

public class GenerateJSON {

public String generateJSON() {
 JSONObject jsonObj = new JSONObject();
 JSONObject detailObj = new JSONObject();
 JSONObject detailObj2 = new JSONObject();

 try {
  detailObj.put("userName", "9836002");
  detailObj.put("password", "9836002");
  detailObj.put("sex", "Boy");
  jsonObj.put("UserProfile", detailObj);

  detailObj2.put("breakfast", "50");
  detailObj2.put("lunch", "100");
  detailObj2.put("dinner", "100");

  detailObj = new JSONObject();
  detailObj.put("Monday", detailObj2);

  detailObj2 = new JSONObject();
  detailObj2.put("breakfast", "55");
  detailObj2.put("lunch", "150");
  detailObj2.put("dinner", "200");

  detailObj.put("Tuesday", detailObj2);
  jsonObj.put("MoneyPlan", detailObj);

 } catch (JSONException ex) {
  System.out.println(ex.toString());
 }

 return jsonObj.toString();
}
}

Reference:
JSON
JSON in JAVA 的簡單程式範例