Question

我正在追踪JSON：

{
   "html_attributions" : [
      "Listings by \u003ca href=\"http://www.indiacom.com/\"\u003eIndiacom Yellow Pages\u003c/a\u003e"
   ],
   "next_page_token" : "CoQC-wAAAJX-ZD5lgNVPx6qwHSGS8N2CxEWUUPk8W479KD-36_ADA-1IP-feLNGdIJRKLE8LSi9csSI0NQ6qmN1d3-2bM9RA940Hcph4xUwigi3RKLRk_F0a8QjwutNfED8cHD2YVV2TxSrU1FeGbOixx3nC_70Ynq7bfL7t8CvUrxeLa7ljTyksmkuaIXFYhgKHCACufqk_fPSbrCEP0JvyN-FfAClaY9ucK6EcZhu1E2aC8LkkNvrmPSSUgcX7hOG6TywZTvCspUpktgXUN-Qd2WFgFqKwlOLOSm4R_GLCJzxS4WIu98vDh3dT7c6x7KP5IQDLRznrATglQ_gPkqUtSE5fFcMSEO7OF0BbRqVXQeILMLfp8xgaFPl6zJI-UvrQ0lL93nIkjsIDsukd",
   "results" : [
      {
         "geometry" : {
            "location" : {
               "lat" : 30.73732,
               "lng" : 76.785848
            }
         },
         "icon" : "http://maps.gstatic.com/mapfiles/place_api/icons/jewelry-71.png",
         "id" : "9e3b67275d7c32b85c301d1ad708519ad11bd5e4",
         "name" : "Tanishq",
         "opening_hours" : {
            "open_now" : true,
            "weekday_text" : []
         },
         "place_id" : "ChIJx3CfWf9mUjoRbOxyCwd6Ujg",
         "reference" : "CmRaAAAAAHqTGUQISzXGLMXzxqDCn29rSuDc-vBCOczSdGVZwxBaNkVE2sFEoYio7HpH6KzAYkOgkQGKHb7tKVSk2_XYObCLmvIpLT57GFUQhr0l8uWNabXWjkco79L6kyEJyC_nEhCObWMxWqub2GZ0ZXanC6msGhRUdmwS-FFoNL-EMeyKDF1w-P0lrg",
         "scope" : "GOOGLE",
         "types" : [ "jewelry_store", "store", "establishment" ],
         "vicinity" : "Himalaya Marg, Sector 17, Chandigarh"
      },
      {
         "geometry" : {
            "location" : {
               "lat" : 30.734622,
               "lng" : 76.76966
            }
         },
         "icon" : "http://maps.gstatic.com/mapfiles/place_api/icons/jewelry-71.png",
         "id" : "fec37080b9573fd4c98dfa8effe0be741362451f",
         "name" : "Jain Jewellers",
         "opening_hours" : {
            "open_now" : true,
            "weekday_text" : []
         },
         "photos" : [
            {
               "height" : 475,
               "html_attributions" : [],
               "photo_reference" : "CpQBggAAAGCpQElDqh0LsnCZYa2IOP8JNW_a0_1-VgCHsF-HlZjPeUyWS05j99LwPnBrkp6-Iz9HLxEJ3MQtJjJ39fudLldi9HeyGYpmI5zspYP7cFORcBTQJbT-yqw2Wf1a3sT1d1ry3GLn0m443DsDZgTSbN-Kmq91eZ2bfR30g3VXyFqUpNPrSAbDHQxplC9qrfmvTRIQ3RQjvxNNtFh02cx3xlxsWhoUL5yDyapLNkWo9t3mNldvdsyBk1o",
               "width" : 475
            }
         ],
         "place_id" : "ChIJzaqqqqXtDzkRv6HcbBzPtyM",
         "reference" : "CnRhAAAAwbGT9XUseXle30IC6PRphi6ekxeQkL4s9K_S6M8NUJAZn-mI9LgdXW_muYuaDE34nDNpJcDUMX4jgYqsgreIBETH3aC1cZhu0GRHakYOSyWw5Z2TtflGwOtkNqaI1phZ1C14tIlVf2gN5FtWdN4XLBIQbGGCgCEi2wj5EC3H5BzbqRoUGQ4QJzKXOnXSMlSXMR5PokdY9JE",
         "scope" : "GOOGLE",
         "types" : [ "finance", "jewelry_store", "store", "establishment" ],
         "vicinity" : "SCF 8, SECTOR 22 D, Chandigarh"
      },

这是json的一部分。我在获取opening_hours时遇到问题。它说下面的项目不存在但是它正在进入K. 这是我的json代码：

JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
contacts = jsonObj.getJSONArray("results");

// looping through All Contacts
for (int i = 0; i < contacts.length(); i++) {
    JSONObject c = contacts.getJSONObject(i);

    String name = c.getString("name");
    names.add(name);
    Log.v("name is", name);
    // cat.add(catagory);
    String vicinity = c.getString("vicinity");
    Log.v("vicinity is", vicinity);
    location.add(vicinity);
    // link.add(img_link);

    String open = c.getString("opening_hours");

对于一些结果来说，开放字符串的值会有所增加但是在某一时刻，它表示值不存在且代码停在那里。

这是logcat：

05-04 18:33:01.451: W/System.err(3695): org.json.JSONException: No value for opening_hours
05-04 18:33:01.461: W/System.err(3695):     at org.json.JSONObject.get(JSONObject.java:354)
05-04 18:33:01.461: W/System.err(3695):     at org.json.JSONObject.getString(JSONObject.java:510)
05-04 18:33:01.461: W/System.err(3695):     at com.app.jewel.HomeFragment$GetJewelry.doInBackground(HomeFragment.java:153)
05-04 18:33:01.461: W/System.err(3695):     at com.app.jewel.HomeFragment$GetJewelry.doInBackground(HomeFragment.java:1)
05-04 18:33:01.461: W/System.err(3695):     at android.os.AsyncTask$2.call(AsyncTask.java:287)
05-04 18:33:01.461: W/System.err(3695):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
05-04 18:33:01.461: W/System.err(3695):     at java.util.concurrent.FutureTask.run(FutureTask.java:137)
05-04 18:33:01.471: W/System.err(3695):     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
05-04 18:33:01.471: W/System.err(3695):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
05-04 18:33:01.471: W/System.err(3695):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
05-04 18:33:01.471: W/System.err(3695):     at java.lang.Thread.run(Thread.java:856)

请帮忙

Answer 1

opening_hours不是字符串;它是另一个JSONObject：

JSONObject jsonObjectOpeningHours = c.getJSONObject("opening_hours");

Answer 2

您在此代码字符串中出错。

String open = c.getString("opening_hours");

正如我在json对象中看到的那样，opening_hours不是String。它也是一个json对象。尝试类似的东西

JSONObject open = c.getJSONObject("opening_hours");

Answer 3

这是因为Google Places API有时不会返回opening_hours标记。因此，即使您正确解析JSON，它也会导致JSONException。

org.json.JSONException：open_hours没有值

3 个答案: