好的，所以我正在尝试从这个网址中获取一些json数据;
但是对于许多标签来说，logcat说“没有价值”。 如果您在浏览器中看到JSON响应，则这些数据清晰可见。
代码段：
public void asd(String id){
StringRequest sr = new StringRequest(Request.Method.GET, id, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
JSONObject obj =new JSONObject(response);
Log.i("response",response);
obj.get("international_phone_number");
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.i("sdsd",error.toString());
}
});
requestQueue.add(sr);
}
logcat的：
org.json.JSONException: No value for international_phone_number
09-16 23:13:59.326 7678-7678/com.example.tanmay.zomato W/System.err: at org.json.JSONObject.get(JSONObject.java:389)
09-16 23:13:59.326 7678-7678/com.example.tanmay.zomato W/System.err: at com.example.tanmay.zomato.MainActivity$1.onResponse(MainActivity.java:140)
09-16 23:13:59.326 7678-7678/com.example.tanmay.zomato W/System.err: at com.example.tanmay.zomato.MainActivity$1.onResponse(MainActivity.java:134)
09-16 23:13:59.326 7678-7678/com.example.tanmay.zomato W/System.err: at com.android.volley.toolbox.StringRequest.deliverResponse(StringRequest.java:60)
09-16 23:13:59.326 7678-7678/com.example.tanmay.zomato W/System.err: at com.android.volley.toolbox.StringRequest.deliverResponse(StringRequest.java:30)
09-16 23:13:59.326 7678-7678/com.example.tanmay.zomato W/System.err: at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:99)
09-16 23:13:59.326 7678-7678/com.example.tanmay.zomato W/System.err: at android.os.Handler.handleCallback(Handler.java:739)
09-16 23:13:59.326 7678-7678/com.example.tanmay.zomato W/System.err: at android.os.Handler.dispatchMessage(Handler.java:95)
09-16 23:13:59.326 7678-7678/com.example.tanmay.zomato W/System.err: at android.os.Looper.loop(Looper.java:148)
09-16 23:13:59.326 7678-7678/com.example.tanmay.zomato W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5417)
09-16 23:13:59.326 7678-7678/com.example.tanmay.zomato W/System.err: at java.lang.reflect.Method.invoke(Native Method)
09-16 23:13:59.326 7678-7678/com.example.tanmay.zomato W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
09-16 23:13:59.326 7678-7678/com.example.tanmay.zomato W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
09-16 23:13:59.455 7678-7678/com.example.tanmay.zomato I/response: {
"html_attributions" : [],
"result" : {
"address_components" : [
{
"long_name" : "Nandankanan Road",
"short_name" : "Nandankanan Rd",
"types" : [ "route" ]
},
{
"long_name" : "Gajapati Nagar",
"short_name" : "Gajapati Nagar",
"types" : [ "sublocality_level_1", "sublocality", "political" ]
},
{
"long_name" : "Bhubaneswar",
"short_name" : "Bhubaneswar",
"types" : [ "locality", "political" ]
},
{
"long_name" : "Khordha",
"short_name" : "Khordha",
"types" : [ "administrative_area_level_2", "political" ]
},
{
"long_name" : "Odisha",
"short_name" : "OD",
"types" : [ "administrative_area_level_1", "political" ]
},
{
"long_name" : "India",
"short_name" : "IN",
"types" : [ "country", "political" ]
},
{
"long_name" : "751012",
"short_name" : "751012",
"types" : [ "postal_code" ]
}
],
"adr_address" : "\u003cspan class=\"street-address\"\u003eNandankanan Rd\u003c/span\u003e, \u003cspan class=\"extended-address\"\u003eGajapati Nagar\u003c/span\u003e, \u003cspan class=\"locality\"\u003eBhubaneswar\u003c/span\u003e, \u003cspan class=\"region\"\u003eOdisha\u003c/span\u003e \u003cspan class=\"postal-code\"\u003e751012\u003c/span\u003e, \u003cspan class=\"country-name\"\u003eIndia\u003c/span\u003e",
"formatted_address" : "Nandankanan Rd, Gajapati Nagar, Bhubaneswar, Odisha 751012, India",
"formatted_phone_number" : "0674 651 0407",
"geometry" : {
"location" : {
"lat" : 20.303133,
"lng" : 85.82299499999999
},
"viewport" : {
"northeast" : {
"lat" : 20.30319164999999,
"lng" : 85.82321345
},
"southwest" : {
"lat" : 20.30295705,
"lng" : 85.82233964999999
}
}
},
"icon" : "https://maps.gstatic.com/mapfiles/place_api/icons/cafe-71.png",
"id" : "b2e435456f40489ebf4de9c82ff8dc3eb0179a2c",
"international_phone_number" : "+91 674 651 0407",
"name" : "Cafe Coffee Day - Nandan Kanan Road",
"opening_hours" : {
"open_now" : false,
"periods" : [
{
"close" : {
"day" : 0,
"time" : "2300"
},
"open" : {
"day" : 0,
"time" : "0900"
}
},
{
"close" : {
"day" : 1,
"time" : "2300"
},
"open" : {
"day" : 1,
"time" : "0900"
}
},
{
"close" : {
"day" : 2,
"time" : "2300"
},
"open" : {
"day" : 2,
"time" : "0900"
}
},
{
"close" : {
"day" : 3,
"time" : "2300"
},
"open" : {
"day" : 3,
"time" : "0900"
}
},
{
"close" : {
"day" : 4,
"time" : "2300"
},
"open" : {
"day" : 4,
"time" : "0900"
}
},
{
"close" : {
"day" : 5,
"time" : "2300"
},
"open" : {
"day" : 5,
"time" : "0900"
}
},
{
"close" : {
"day" : 6,
"time" : "2300"
},
09-16 23:13:59.455 7678-7678/com.example.tanmay.zomato W/System.err: org.json.JSONException: No value for international_phone_number
09-16 23:13:59.455 7678-7678/com.example.tanmay.zomato W/System.err: at org.json.JSONObject.get(JSONObject.java:389)
09-16 23:13:59.455 7678-7678/com.example.tanmay.zomato W/System.err: at com.example.tanmay.zomato.MainActivity$1.onResponse(MainActivity.java:140)
09-16 23:13:59.455 7678-7678/com.example.tanmay.zomato W/System.err: at com.example.tanmay.zomato.MainActivity$1.onResponse(MainActivity.java:134)
09-16 23:13:59.456 7678-7678/com.example.tanmay.zomato W/System.err: at com.android.volley.toolbox.StringRequest.deliverResponse(StringRequest.java:60)
09-16 23:13:59.456 7678-7678/com.example.tanmay.zomato W/System.err: at com.android.volley.toolbox.StringRequest.deliverResponse(StringRequest.java:30)
09-16 23:13:59.456 7678-7678/com.example.tanmay.zomato W/System.err: at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:99)
09-16 23:13:59.456 7678-7678/com.example.tanmay.zomato W/System.err: at android.os.Handler.handleCallback(Handler.java:739)
09-16 23:13:59.456 7678-7678/com.example.tanmay.zomato W/System.err: at android.os.Handler.dispatchMessage(Handler.java:95)
09-16 23:13:59.456 7678-7678/com.example.tanmay.zomato W/System.err: at android.os.Looper.loop(Looper.java:148)
09-16 23:13:59.456 7678-7678/com.example.tanmay.zomato W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5417)
09-16 23:13:59.456 7678-7678/com.example.tanmay.zomato W/System.err: at java.lang.reflect.Method.invoke(Native Method)
09-16 23:13:59.456 7678-7678/com.example.tanmay.zomato W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
09-16 23:13:59.456 7678-7678/com.example.tanmay.zomato W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
09-16 23:19:34.592 7678-7684/com.example.tanmay.zomato W/art: Suspending all threads took: 7.170ms
09-16 23:21:16.246 7678-7684/com.example.tanmay.zomato W/art: Suspending all threads took: 6.563ms
09-16 23:25:28.666 7678-7684/com.example.tanmay.zomato W/art: Suspending all threads took: 6.054ms
这些函数只是我正在使用的代码的简要版本。
答案 0 :(得分：0)
您的错误表明密钥不在响应的顶层，而不是在数据的任何位置都不存在。
您必须进入results键。
JSONObject obj =new JSONObject(response);
JSONObject result = response.getJSONObject("results");
String inumber = result.getString("international_phone_number");
答案 1 :(得分：0)
尝试getJSONObject，只需获取。
如下：
@Override
public void onResponse(String response) {
try {
JSONObject obj =new JSONObject(response);
JSONObject results = object.getJSONObject("results");
String internationalNumber = result.getString("international_phone_number");
} catch (JSONException e) {
e.printStackTrace();
}
}