我有一个JSON对象。 我想在Java服务中访问。 我正在尝试解析

Question

I am using import net.sf.json.JSONObject

My object is like this:

[{
    "courseId": "AUTO_CAD",
    "strDate": "02-04-2012"
 }, {
    "courseId": "CNC_PROG",
    "strDate": "03-04-2012"
}]

Please help me how to access this in java service

//The code that i have tried.

List<JSONObject> jsonList = new ArrayList<JSONObject>(); 
jsonList = (List<JSONObject>) context.get("courseData"); // courseDate is my json object
JSONObject obj = jsonList.get(0); 
Debug.log("courseStartDate ="+ obj.getJSONObject("courseId")); 

//Using this gives me the following error. org.ofbiz.webapp.event.EventHandlerException: Service invocation error (java.lang.String cannot be cast to net.sf.json.JSONObject)

Answer 1

You can do this:

JSONObject json = (JSONObject) JSONSerializer.toJSON(jsonTxt);
System.out.println(pilot.getString("aKey"));

Answer 2

Here you have an ArrayList yourObject

for (int i = 0; i < yourObject.size(); i++) { 
 System.out.println(yourObject.get(i).getCourseId());
 System.out.println(yourObject.get(i).getStrDate());
}

Answer 3

Have not tested yet the code, but worth a try:

JSONArray courses = new JSONArray(json);

JSONObject first = courses.getJSONObject(0); //Or access in a loop using courses.length()
Debug.log("CourseID: "+ first.getString("courseId"));