代码是用的源代码，可是测试报错，显示errno在json包里找不到怎么解决呀？

Question

net.sf.json.JSONException: JSONObject["errno"] not found. at net.sf.json.JSONObject.getString(JSONObject.java:2092) at panda.util.WeiXinUtil.translate(WeiXinUtil.java:294) at panda.test.WeiXinTest.main(WeiXinTest.java:54)