json字符串轉換爲JSONObject和JSONArray

一.下載json 具體到http://www.json.org/上找java-json下載，並把其放到項目源代碼中，這樣就能夠引用其類對象了

二.具體轉化過程

//JSONObject

 String jsonMessage = "{\"語文\":\"88\",\"數學\":\"78\",\"計算機\":\"99\"}";   String value1 = null;   try   {    //將字符串轉換成jsonObject對象    JSONObject myJsonObject = new JSONObject(jsonMessage);    //獲取對應的值    value1 = myJsonObject.getString("數學");   }   catch (JSONException e)   {   }      System.out.println("value1="+value1);

//JSONArray

jsonMessage = "[{'num':'成績', '外語':88, '歷史':65, '地理':99, 'object':{'aaa':'1111','bbb':'2222','cccc':'3333'}}," +
           "{'num':'興趣', '外語':28, '歷史':45, '地理':19, 'object':{'aaa':'11a11','bbb':'2222','cccc':'3333'}}," +
           "{'num':'愛好', '外語':48, '歷史':62, '地理':39, 'object':{'aaa':'11c11','bbb':'2222','cccc':'3333'}}]";
  JSONArray myJsonArray;
  try
  {
   myJsonArray = new JSONArray(jsonMessage);
   
   for(int i=0 ; i < myJsonArray.length() ;i++)
   {
    //獲取每個JsonObject對象
    JSONObject myjObject = myJsonArray.getJSONObject(i);
    
    //獲取每個對象中的值
    String numString = myjObject.getString("num");
    int englishScore = myjObject.getInt("外語");
    int historyScore = myjObject.getInt("歷史");
    int geographyScore = myjObject.getInt("地理");
    //獲取數組中對象的對象
    JSONObject myjObject2 = myjObject.getJSONObject("object");
    String aaaString = myjObject2.getString("aaa");
    System.out.println("aaaString="+aaaString);
    
    System.out.println("numString="+numString);
    System.out.println("englishScore="+englishScore);
    System.out.println("historyScore="+historyScore);
    System.out.println("geographyScore="+geographyScore);
   }
  }
  catch (JSONException e)
  {
  }

 

 

String property = "";
String direction = "";
JSONArray myJsonArray = new JSONArray(sort);
for(int i=0 ; i < myJsonArray.length() ;i++){
        JSONObject myjObject = myJsonArray.getJSONObject(i);
        property = myjObject.getString("property");
        direction = myjObject.getString("direction");}