如何将数据实体转换为 JSON 字符串

JAVA:

实例代码：
public class JSONUtil {
/**
* 将json转化为实体POJO
* @param jsonStr
* @param obj
* @return
*/
public static Object JSONToObj(String jsonStr,Class obj) {
T t = null;
try {
ObjectMapper objectMapper = new ObjectMapper();
t = objectMapper.readValue(jsonStr,
obj);
} catch (Exception e) {
e.printStackTrace();
}
return t;
}
/**
* 将实体POJO转化为JSON
* @param obj
* @return
* @throws JSONException
* @throws IOException
*/
public static JSONObject objectToJson(T obj) throws JSONException, IOException {
ObjectMapper mapper = new ObjectMapper();
// Convert object to JSON string
String jsonStr = "";
try {
jsonStr = mapper.writeValueAsString(obj);
} catch (IOException e) {
throw e;
}
return new JSONObject(jsonStr);
}
public static void main(String[] args) throws JSONException, IOException {
JSONObject obj = null;
obj = new JSONObject();
obj.put("name", "213");
obj.put("age", 27);
JSONArray array = new JSONArray();
array.put(obj);
obj = new JSONObject();
obj.put("name", "214");
obj.put("age", 28);
array.put(obj);
Student stu = (Student) JSONToObj(obj.toString(), Student.class);
JSONObject objList = new JSONObject();
objList.put("student", array);
System.out.println("objList:"+objList);
StudentList stuList = (StudentList) JSONToObj(objList.toString(), StudentList.class);
System.out.println("student:"+stu);
System.out.println("stuList:"+stuList);
System.out.println("#####################################");
JSONObject getObj = objectToJson(stu);
System.out.println(getObj);
}
}

C#:
List list = bll.GetPDFinancing(isPool);
string jsonData = new JavaScriptSerializer().Serialize(list);