json的解析

java解析json

//json数据:{"data":{"ack":"Y","documentCode":"TEST-170920-2013","errors":[],"trackNumber":"00340434185102649156"},"errorCode":"0","errorMsg":null}
//
net.sf.json.JSONObject jsonObj = net.sf.json.JSONObject.fromObject(strResult);
System.out.println(jsonObj.getJSONObject("data").get("trackNumber"));