json字符串转换为JSONObject和JSONArray

一.下载json 具体到http://www.json.org/上找java-json下载，并把其放到项目源代码中，这样就可以引用其类对象了

二.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)
{
}

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");}