json字符串转换为JSONObject和JSONArray

具体转化过程

    //JSONObject

    String jsonMessage = "{\"语文\":\"88\",\"数学\":\"78\",\"计算机\":\"99\"}";

    String value1 = null;

    try

    {

    //将字符串转换成jsonObject对象

    JSONObject myJsonObject = new JSONObject(jsonMessage);

    //获取对应的值

    value1 = myJsonObject.getString("数学");

    }

    catch (JSONException e)

    {

    }

    System.out.println("value1="+value1);

    //JSONArray

    jsonMessage = "[{'num':'成绩', '外语':88, '历史':65, '地理':99, 'object':{'aaa':'1111','bbb':'2222','cccc':'3333'}}," +

    "{'num':'兴趣', '外语':28, '历史':45, '地理':19, 'object':{'aaa':'11a11','bbb':'2222','cccc':'3333'}}," +

    "{'num':'爱好', '外语':48, '历史':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++)

    {

    //获取每一个JsonObject对象

    JSONObject myjObject = myJsonArray.getJSONObject(i);

    //获取每一个对象中的值

    String numString = myjObject.getString("num");

    int englishScore = myjObject.getInt("外语");

    int historyScore = myjObject.getInt("历史");

    int geographyScore = myjObject.getInt("地理");

    //获取数组中对象的对象

    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)

    {

    }