json字符串转换为JSONObject和JSONArray
json字符串转换为JSONObject和JSONArrayimport org.json.JSONArray;import org.json.JSONObject;public class JSONTest{ public static void main(String[] args){ //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("异常"); } 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){ System.out.println("异常"); } }}
