麻烦JSON例外 - 的Android [英] Trouble with JSON exception - Android
问题描述
我无法弄清楚为什么我得到一个JSON例外，而我分析我的JSON对象。我得到（HTTP GET）的JASON从URL。这里是所有相关的code，让我知道如果你需要看到任何更多code
I am having trouble figuring out why i'm getting a JSON exception while I am parsing my JSON object. I am getting(Http GET) the JASON from a URL. Here is all the relevant code, let me know if you need to see any more of the code
该doInBackground异步方法：
The doInBackground Async method:
@Override
protected Void doInBackground(Void... arg0)
{
// Creating service handler class instance
ServiceHandler sh = new ServiceHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(URL,ServiceHandler.GET);
Log.w("Rakshak", "the jaon String is:"+jsonStr);// this prints the JASON in the log and it looks fine
// I am not pasting it in coz it is HUGE
if (jsonStr != null)
{
try {
JSONObject jsonObj = new JSONObject(jsonStr);
Log.w("Rakshak", "in the try before the JASON");
// Getting JSON Array node
kingtide = jsonObj.getJSONArray("JASON");
// looping through All Kingtide events
for (int i = 0; i < kingtide.length(); i++)
{
JSONObject k = kingtide.getJSONObject(i);
String date = "Date Range:"+k.getString(KEY_DATE);
String lat = k.getString(KEY_LAT);
String lng = k.getString(KEY_LNG);
String loc = "Location of the Kingtide:"+k.getString(KEY_LOC)+", "+k.getString(KEY_STATE);
String temp_Time = k.getString(KEY_TIME);
String[] time_parts = temp_Time.split("T");
String time = "Kingtide at:"+time_parts[1]+" "+getYear(time_parts[0]);
// tmp hashmap for single kingtide event
HashMap<String, String> kt = new HashMap<String, String>();
// adding each child node to HashMap key => value
kt.put(KEY_DATE, date);
kt.put(KEY_LAT, lat);
kt.put(KEY_LNG, lng);
kt.put(KEY_LOC, loc);
kt.put(KEY_TIME, time);
Log.w("Rakshak", KEY_DATE+KEY_LAT+KEY_LNG+KEY_LOC+KEY_TIME);
// adding the kingtide to the kingtide hash map. this will be used to fill up the list view
kingTideList.add(kt);
}
} catch (JSONException e) {
Log.e("Rakshak", "JSONException "+e.getMessage()); // this prints "JSONException Value [{"Latitude":-19.9078861,"Location":"Abbot....." and the rest of the JASON(all of it)
}
}
else
Log.w("Rakshak", "JASON string is null");
return null;
}
在服务处理程序类：
the Service handler class:
public class ServiceHandler {
static String response = null;
public final static int GET = 1;
public final static int POST = 2;
public ServiceHandler() {
}
/*
* Making service call
* @url - url to make request
* @method - http request method
* */
public String makeServiceCall(String url, int method) {
return this.makeServiceCall(url, method, null);
}
/*
* Making service call
* @url - url to make request
* @method - http request method
* @params - http request params
* */
public String makeServiceCall(String url, int method,
List<NameValuePair> params) {
try {
// http client
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpEntity httpEntity = null;
HttpResponse httpResponse = null;
// Checking http request method type
if (method == POST) {
HttpPost httpPost = new HttpPost(url);
// adding post params
if (params != null) {
httpPost.setEntity(new UrlEncodedFormEntity(params));
}
httpResponse = httpClient.execute(httpPost);
} else if (method == GET) {
// appending params to url
if (params != null) {
String paramString = URLEncodedUtils
.format(params, "utf-8");
url += "?" + paramString;
}
HttpGet httpGet = new HttpGet(url);
httpResponse = httpClient.execute(httpGet);
}
httpEntity = httpResponse.getEntity();
response = EntityUtils.toString(httpEntity);
} catch (UnsupportedEncodingException e) {
Log.e("Rakshak", "UnsupportedEncodingException "+e.getMessage());
} catch (ClientProtocolException e) {
Log.e("Rakshak", "ClientProtocolException "+e.getMessage());
} catch (IOException e) {
Log.e("Rakshak", "IOException "+e.getMessage());
}
Log.w("Rakshak", "In the service handeler: this is a test");
return response;
}
}
堆栈跟踪的部分：
03-14 10:09:56.861: E/Rakshak(7037): JSONException Value [{"Latitude":-19.9078861,"Location":"Abbot Point","Longitude":148.08467259999998,"DateRange":"1–3 January 2014","HighTideOccurs":"2014-01-02T09:47:00","State":"QLD"},{"Latitude":-27.477819,"Location":"Brisbane
对于JASON文件的URL是 http://witnesskingtides.azurewebsites.net/api/kingtides
请注意：我知道它看起来像一个XML文件，但它是JASON。刚刚经历了验证/浏览器运行它，看看你的自我，如果你想要的。
NOTE: I know it looks like a XML file but it is JASON . Just run it through a validator/viewer and see for your self if you want.
我在为什么我得到一个JASON例外，如何解决它的问题。
My question in why am I getting a JASON exception and how do I fix it.
推荐答案
在获取内容，我得到这个后面（的一部分）：
When getting the contents, I get this back (part of it):
[
{
"Location": "Abbot Point",
"State": "QLD",
"HighTideOccurs": "2014-01-02T09:47:00",
"DateRange": "1–3 January 2014",
"Latitude": -19.9078861,
"Longitude": 148.08467259999998
},
{
"Location": "Brisbane Bar",
"State": "QLD",
"HighTideOccurs": "2014-01-02T10:16:00",
"DateRange": "1–3 January 2014",
"Latitude": -27.477819,
"Longitude": 153.01889119999998
},
...
]
这意味着你的对象已经是一个数组。尝试在code可以改变：
This means that your object is already an array. Try to change this in your code:
//JSONObject jsonObj = new JSONObject(jsonStr);
Log.w("Rakshak", "in the try before the JASON");
// Getting JSON Array node
kingtide = new JSONArray(jsonStr);
由于返回jsonStr已经是一个数组（而不是与所谓的杰森的数组属性的对象）。
since the returned jsonStr is already an array (and not an object with an array-attribute called "JASON").
这篇关于麻烦JSON例外 - 的Android的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
