JSON字符串到JSON对象的转换

Question

I have looking to similar questions but i was not able to solve my problem .I have tried parsing my json response both into a Json array and Json object but every time , i am getting this exception of string to json object. I guess may be the problem is with my Json response.

 results = { "type": 1, "user_log": "ahsan.tahir.92_/var/www/html/2014-10-11__15-54-52__50sec.txt_res", "freq": 0.01, "coordina": [ [-37], [-9], [-20], [-12], [-22], [-9], [-22], [-15], [-25], [-7], [-20], [-12], [-20], [-9], [-25], [8], [-23], [-11], [-18], [-13], [-19], [-10], [-21], [-12], [-25], [-11], [-17], [-12], [-22], [-13], [-21], [3] ], "tot_time": 40.11, "tot_distace": 100, "stroke_each_pool": [ [16], [16] ], "tot_stroke": [ [16], [16] ], "split": [ [20.22], [19.89] ], "timing_turn": 7.04, "cycle_Rate_l": [ [2.22], [2.2680001] ], "cycle_Rate_r": [ [2.224], [2.27] ], "mean_velocity": [ [2.4727993], [2.5138261] ], "stroke_length": [ [3.125], [3.125] ], "stroke_freq": [ [79.077431], [77.419357] ], "roll_peaks": [ [-44.10043335], [55.79428101], [-61.51541138], [54.7466507], [-62.09820557], [55.01488495], [-62.48770142], [53.44023132], [-70.32449341], [51.8399353], [-65.84837341], [53.5617981], [-63.50210571], [55.9821167], [-62.37905121], [39.42669678], [-43.44207764], [63.20912933], [-59.19660187], [50.6708374], [-63.8214798], [54.57595062], [-63.31864166], [53.82037354], [-66.93650818], [52.36277008], [-65.23461151], [52.89829254], [-62.78508759], [51.17367554], [-62.87123108], [59.13114929] ], "mean_roll_dx": [ [52.475822], [54.73027] ], "mean_roll_sx": [ [61.531971], [60.950779] ], "std_roll_dx": [ [5.4471908], [4.3127728] ], "std_roll_sx": [ [7.6123171], [7.4134283] ], "mean_roll": [ [57.003899], [57.840527] ], "std_roll": [ [7.9220791], [6.6817732] ], "mean_pitch": [ [-5.5227709], [-5.2282872] ], "std_pitch": [ [-5.5227709], [-5.2282872] ], "clean_stroke_time": [ [15.92], [16.84] ], "errore": 227, "fatal_error": { "_ArrayType_": "double", "_ArraySize_": [0,0], "_ArrayData_": null } } 

and i am parsing it like this :

 JSONObject reader = new JSONObject(in); JSONObject sys = reader.getJSONObject("results"); 

Any idea what am i missing here ?

My exception is as follows :

 org.json.JSONException: Value type of type java.lang.String cannot be converted to JSONObject 

Answer 1

There is no results field in the results string you have posted, is that the issue. In any case, please go ahead and reformat your question to more accurately reflect what you are doing, and include the error message you are seeing.

Actually, are you referring to the error message in the JSON output? That seems to be a JSON-encoded error message that was output by whatever service you called. There seems to be some issue with the data you are passing to that service.

Answer 2

I may have Misunderstood your question, but where are you parsing the Json response using something like JSONObject jsonObject = (JSONObject) jsonParser.parse(strippedJSON); where strippedJSON the response received from API.

Answer 3

This:

results = {rest of response here}

is not valid JSON.

Perhaps you meant to return this:

{"results": {rest of response here}}

... or just

{rest of response here}

Answer 4

Your reader object is your results object itself.

JSONObject resultsJSON = new JSONObject(in);
System.out.println("User Log: " + resultsJSON.get("user_log"));

You're getting the exception because there's no results object in your input JSON string ie you're receiving your results object without a JSON wrapper around it.

Answer 5

If you are using javascript try this

var parsed_data = JSON && JSON.parse(results) || $.parseJSON(results);