Question

我正在尝试使用异步任务获取数据。当我在日志中打印dta时，结果在jsonaray中正确显示。 Iam试图从json数组中获取数据但是在异常中收到了一个错误。作为followos我尝试了所有解决方案将fron jsonArray转换为obje和JsonObject转换为JsonArray.But它显示以下异常如下所示。我不知道该怎么办。如果有的话，请给我建议解决方案。我从2天开始试用这个功能但没解决。我的代码如下所示。错误日志也在底部。
我从api返回数据如下

                echo get_xml(array('profile'=>$client),'client_profile');

------------ Code --------------------

             private class client_details extends AsyncTask<Void, Void, JSONArray>
                    {   
                        Dialog dialog;
                        @Override
                        public void onPreExecute() 
                        { 
                            dialog = new Dialog(Clients.this,android.R.style.Theme_Translucent_NoTitleBar);
                            dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
                            dialog.setContentView(R.layout.progressbar);
                            dialog.show();
                        }

                        @Override
                        protected JSONArray doInBackground(Void... params) {
                            // TODO Auto-generated method stub
                            Shared_pref Prefs = new Shared_pref(getApplicationContext());   
                            String table_pref=Prefs.getTabel_prefix();
                            String vis_client_id=Prefs.getClient_Id();
                            String filter_id="&vis_filter_id=1";
                            URL=op.getUrl(getApplicationContext(),"client","view_profile&vis_client_id="+vis_client_id,filter_id);
                            JSONArray client_array = JSONfunctions.getJSONfromURL(URL+"&vis_encode=json",Clients.this);                                                     
                            return client_array;
                        }

                        @Override
                        public void onPostExecute(JSONArray client_array) 
                        {
                            super.onPostExecute(client_array);  

                            String result =client_array.toString();

                            if(result.equals("[\"Nodatafound\"]"))  
                            {
                                 Operation.showToast(getApplicationContext(), R.string.Data_not_found);
                            }

                            try 
                            {   
                                //ticket_obj=client_array.getJSONObject(0);  
                                JSONObject ticket_obj = new JSONObject(result);
                                //tickets_data_array=ticket_obj.getJSONArray("client_profile");
                                if (ticket_obj.has("profile")) {
                                    op.showToast(getApplicationContext(), "Key found ........!");
                                    JSONArray jsonarray = new JSONArray(client_array);//THIS ONE 
                                    JSONObject jsonobject = jsonarray.getJSONObject(0);
                                    String Fname       = jsonobject.getString(FIRST_NAME);
                                     Log.d("Fname ===> ",Fname);
                                   }
                                else
                                {
                                    op.showToast(getApplicationContext(), "No such key found........!");
                                    Log.d("No such key found........!","No such key found........!");
                                }

                                }
                            //   

                         catch (JSONException e) { e.printStackTrace();}   
                     } 
                        dialog.dismiss();

                    }

------------错误日志--------------------

                09-09 06:10:36.623: W/System.err(9002): org.json.JSONException: Value [{"profile":{"office_name":"","is_verified":"1","forum_email_notification":"1","city":"","first_name":"Pratik","balance":"0","option_domain_name":"test","initials":"Mr","client_type":"0","group_credit":"0.00","gender":"0","is_approved":"1","domain_name":"test","client_id":"2","otherim":"","credit":"0.00","is_spam":"0","office_phone":"","parent_id":"0","domain_url":"http:\/\/test.com\/test\/sandip\/v5\/","fax":"","forum_signature_content":"","group_id":"1","optionB_domain_id":"1","country":"","contact_number":"","user_name":"test","email":"pratik@test.com","job_title":"","last_name":"T","parent_name":"","temporary_address":"","facebook_id":"","language":"1","office_contact_num":"","salt":"testtestestest","zip_code":"","office_website":"","department":"","state":"","office_fax":"","login_as":"0","currency":"USD","permanent_address":"","department_access":"0","is_manager":"0","birthdate":"","registration_date":"1504254310","parent_email":"","password_auth":"0","group_name":"Default","netmeetingid":"","website":"","domain_id":"1","is_banned":"0","twitter_id":"","mobile_number":"","office_address":"","authentication":"383Y4A==","harvest_id":"0","image_path":"","office_email":""}}] of type org.json.JSONArray cannot be converted to JSONObject

Answer 1

您的JSON如下所示：

[
  {
    "profile": {
      "office_name": "",
      ...
      "office_email": ""
    }
  }
]

它是一个只有一个元素的JSON数组。要获得该单个元素，首先必须将JSON解析为数组，然后从中获取第一个对象。

替换此行：

JSONObject ticket_obj = new JSONObject(result);

有了这些：

JSONArray ticket_arr = new JSONArray(result);
JSONObject ticket_obj = ticket_arr.getJSONObject(0);

转换类型org.json.JSONArray无法转换为JSONObject

1 个答案: