Android Java谷歌地点GET（拉）评论JSONException对评论没有任何评论

Question

我检查并确保谷歌放置android的API已启用。

起初我使用这个网址：

https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=34.0467359,-118.441764&radius=1000&sensor=true&key=YOUR_PLACE_API_KEY 

，并切换到这一点：

https://maps.googleapis.com/maps/api/place/details/json? reference=REFERENCE_STRING_OF_THE_PLACE&sensor=true&key=YOUR_PLACE_API_KEY 

按照建议在

Android - Google Places API - No "reviews" Array

，但仍然得到了同样的错误。

在https://developers.google.com/places/web-service/details

有人指出，参考已被废弃，现在我们必须使用place_id。我改变了网址为：

https://maps.googleapis.com/maps/api/place/details/json?placeid=ChIJN1t_tDeuEmsRUsoyG83frY4&key=YOUR_API_KEY 

后来我读到了stackoverflow，在2012年谷歌地方的API没有功能来拉评语。这适用于现在吗？ 2016年？如果没有，请帮我在我的代码下面解释我做错了什么。

如果我复制并粘贴任何上述网址的日志输出，评论显示在我的浏览器中，但响应中的输出不显示网址。

我收到此错误：

W/System.err: org.json.JSONException: No value for reviews 

W/System.err:  at org.json.JSONObject.get(JSONObject.java:389) 

W/System.err:  at org.json.JSONObject.getJSONArray(JSONObject.java:584) 

W/System.err: at DownloadReviewsTask.doInBackground(DownloadReviewsTask.java:69) 

W/System.err:  at DownloadReviewsTask.doInBackground(DownloadReviewsTask.java:19) 

W/System.err:  at android.os.AsyncTask$2.call(AsyncTask.java:292) 

W/System.err:  at java.util.concurrent.FutureTask.run(FutureTask.java:237) 

W/System.err:  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231) 

W/System.err:  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112) 

W/System.err:  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587) 

W/System.err:  at java.lang.Thread.run(Thread.java:818) 

这是我下面的代码：

public class JSONParser { 

    String charset = "UTF-8"; 
    HttpURLConnection conn; 
    DataOutputStream wr; 
    StringBuilder result = new StringBuilder(); 
    URL urlObj; 
    JSONObject jObj = null; 

    StringBuilder sbParams; 
    String paramsString; 

    public JSONObject makeHttpRequest(String url, String method, 
             HashMap<String, String> params) { 

     sbParams = new StringBuilder(); 
     int i = 0; 
     for (String key : params.keySet()) { 
      try { 
       if (i != 0){ 
        sbParams.append("&"); 
       } 
       sbParams.append(key).append("=") 
         .append(URLEncoder.encode(params.get(key), charset)); 

      } catch (UnsupportedEncodingException e) { 
       e.printStackTrace(); 
      } 
      i++; 
     } 

     if (method.equals("POST")) { 
      // request method is POST 
      try { 
       urlObj = new URL(url); 

       conn = (HttpURLConnection) urlObj.openConnection(); 

       conn.setDoOutput(true); 

       conn.setRequestMethod("POST"); 

       conn.setRequestProperty("Accept-Charset", charset); 

       conn.setReadTimeout(90000); 
       conn.setConnectTimeout(90000); 

       conn.connect(); 

       paramsString = sbParams.toString(); 

       wr = new DataOutputStream(conn.getOutputStream()); 
       wr.writeBytes(paramsString); 
       wr.flush(); 
       wr.close(); 

      } catch (IOException e) { 
       e.printStackTrace(); 
      } 
     } 
     else if(method.equals("GET")){ 
      // request method is GET 

      if (sbParams.length() != 0) { 
       url += "?" + sbParams.toString(); 
      } 

      try { 
       urlObj = new URL(url); 

       conn = (HttpURLConnection) urlObj.openConnection(); 

       conn.setDoOutput(false); 

       conn.setRequestMethod("GET"); 

       conn.setRequestProperty("Accept-Charset", charset); 

       conn.setConnectTimeout(90000); 

       conn.connect(); 

      } catch (IOException e) { 
       e.printStackTrace(); 
      } 

     } 

     try { 
      //Receive the response from the server 
      InputStream in = new BufferedInputStream(conn.getInputStream()); 
      BufferedReader reader = new BufferedReader(new InputStreamReader(in)); 

      String line; 
      while ((line = reader.readLine()) != null) { 
       result.append(line); 
      } 

      Log.d("JSON Parser", "result: " + result.toString()); 


     } catch (IOException e) { 
      e.printStackTrace(); 
     } 

     conn.disconnect(); 

     // try parse the string to a JSON object 

     try { 
      jObj = new JSONObject(result.toString()); 
     } catch (JSONException e) { 
      Log.e("JSON Parser", "Error parsing data " + e.toString()); 
     } 

     // return JSON Object 
     return jObj; 

    } 

} 

public class DownloadReviewsTask extends AsyncTask<String, Void, HashMap<String, List<MyModel>>> { 
    //Declarations 
    private Context mContext; 
    public Exception mException; 
    private OnEventListener<HashMap<String, List<MyModel>>> mCallBack; 
    JSONArray reviews; 
    String author_name; 
    String text; 
    //Constructor 
    public DownloadReviewsTask(Context context, OnEventListener callback) { 
     mCallBack = callback; 
     mContext = context; 
    } 
    //sets and passes the review author and text for each review and sets them in the My Model 
    public MyModel setPlace(JSONObject thisObject) throws JSONException { 
     JSONObject results = thisObject.getJSONObject("results"); 
     MyModel thisMyModel = new MyModel(); 
     if (!results.isNull("reviews")) { 
      reviews = results.getJSONArray("reviews"); 
      Log.e("reviews array setPlace", String.valueOf(reviews)); 
      for (int i = 0; i < reviews.length(); i++) { 
       //if(i==reviews.length()) break; 
       // if (thisObject.getJSONArray("reviews").getJSONObject(i).has("author_name")) //{ 
        author_name = results.getJSONArray("reviews").getJSONObject(i).getString("author_name");//reviews.getJSONObject(i).getString("author"); 
        Log.e("review_author in setup", results.getJSONArray("reviews").getJSONObject(i).getString("author_name")); 
       // } 
       //if (thisObject.getJSONArray("reviews").getJSONObject(i).has("text")) { 
        Log.e("review text in setup", results.getJSONArray("reviews").getJSONObject(i).getString("text")); 
        text = results.getJSONArray("reviews").getJSONObject(i).getString("text");//} 

       thisMyModel.setAuthor_name(author_name); 
       thisMyModel.setText(text); 
      } 
     } 
     return thisMyModel; 
    } 

    @Override 
    protected HashMap<String, List<MyModel>> doInBackground(String... args) { 
     try { 
      JSONParser jsonParser = new JSONParser(); 
      JSONObject json; 
      String reviewUrl = args[0]; 
      Log.e("reviewUrl",reviewUrl); 
      //Use a HashMap instead with the varargs: 
      HashMap<String, String> params = new HashMap<>(); 
      json = jsonParser.makeHttpRequest(reviewUrl, "GET", params); 
      HashMap<String, List<MyModel>> myResults = new HashMap<>(); 
      if(json != null) { 
       Log.e("reviews result", json.toString()); 
       JSONArray parentArray = json.getJSONArray("reviews"); 
       List<MyModel> allEventsList = new ArrayList<>(); 
       //loops through json array 
       for (int i = 0; i < parentArray.length(); i++) { 
        JSONObject finalObject = parentArray.getJSONObject(i); 
        allEventsList.add(setPlace(finalObject)); 
        Log.e("allEventsList", String.valueOf(allEventsList)); 
       } 
       myResults.put("reviews", allEventsList); 
       Log.e("myResults",String.valueOf(myResults)); 
       return myResults; 

      }else{ 
       return null; 
      } 
     } 
     catch (JSONException e){ 
      e.printStackTrace(); 
     } 
     return null; 

    } 

    @Override 
    protected void onPostExecute(HashMap<String, List<MyModel>> result) { 
     if (mCallBack != null) { 
      if (mException == null) { 
       mCallBack.onSuccess(result); 
      } else { 
       mCallBack.onFailure(mException); 
      } 
     } 
    } 
} 

public class MyModel{ 
     private String reference; 
     public void setReference(String reference) { 
      this.reference = reference; 
     } 
     public String getReference() { 
      return reference; 
     } 
    } 

public class MainActivity{ 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
       String reviewsUrl = "https://maps.googleapis.com/maps/api/place/details/json?reference="+reference+sensor+key; 
        DownloadReviewsTask rev = new DownloadReviewsTask(this, new OnEventListener<HashMap<String, List<MyModel>>>() { 

       @Override 
       public void onSuccess(HashMap<String, List<MyModel>> result) { 
        if(result != null && result.size() > 0) { 
         for (int i = 0; i < result.size(); i++){ 
          Log.e("review SingleVewInit",result.get("reviews").get(0).getAuthor_name()); 
          Log.e("review SingleVewInit",result.get("reviews").get(0).getText()); 
         } 
        } 
       } 

       @Override 
       public void onFailure(Exception e) { 
        //Toast.makeText(this, "ERROR: " + e.getMessage(), Toast.LENGTH_LONG).show(); 
        Log.e("ERROR: " ,e.getMessage()); 
       } 
      }); 
      rev.execute(reviewsUrl); 
    } 

} 

Answer 1

好的下面是示例代码获取评论。您需要了解代码并进行必要的更改才能在代码中工作。

new Thread(new Runnable() { 
     @Override 
     public void run() { 

      try { 

       URL url = new URL("https://maps.googleapis.com/maps/api/place/details/json?placeid=ChIJN1t_tDeuEmsRUsoyG83frY4&key=AIzaSyAAkK3AyE8Cbqb9H5MYqptjJwRhRgltoZM"); 
       HttpURLConnection connection = (HttpURLConnection) url.openConnection(); 
       InputStream in = connection.getInputStream(); 

       int ch = -1; 
       StringBuffer buffer = new StringBuffer(); 
       while((ch = in.read()) != -1){ 
        buffer.append((char)ch); 
       } 

       JSONObject jObj = new JSONObject(buffer.toString()); 
       JSONObject jResult = jObj.getJSONObject("result"); 
       JSONArray jReviewArray = jResult.getJSONArray("reviews"); 

       for(int i=0; i<jReviewArray.length(); i++){ 
        JSONObject jReview = jReviewArray.getJSONObject(i); 
        System.out.println(jReview.getString("author_name") +"\n"+ jReview.getString("text") +"\n\n"); 
       } 

      } catch (MalformedURLException e) { 
       e.printStackTrace(); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } catch (JSONException e) { 
       e.printStackTrace(); 
      } 

     } 
    }).start(); 

它使用Review_Text打印Author_Name。

更新您的代码作为如下─

1. 在DownloadReviewsTask -

变化JSONArray parentArray = json.getJSONArray("reviews");

到JSONArray parentArray = json.getJSONArray("result");

变化setPlace（）为如下─

public MyModel setPlace(JSONObject thisObject) throws JSONException { 

MyModel thisMyModel = new MyModel(); 
author_name = thisObject.getString("author_name"); 
text = thisObject.getString("text"); 

thisMyModel.setAuthor_name(author_name); 
thisMyModel.setText(text); 

return thisMyModel; 

} 

我没有发现setAuthor_name（）和的setText（）内MyModal方法所以更改它作为如下─

public class MyModel{ 
private String reference; 
private String author_name; 
private String text; 

public void setAuthor_name(String author_name) { 
    this.author_name = author_name; 
} 
public String getAuthor_name() { 
    return author_name; 
} 

public void setText(String text) { 
    this.text = text; 
} 
public String getText() { 
    return text; 
} 

public void setReference(String reference) { 
    this.reference = reference; 
} 
public String getReference() { 
    return reference; 
} 
} 

最后更改日志语句作为MainActivity为如下─

Log.e("review SingleVewInit",result.get(i).getAuthor_name()); 
Log.e("review SingleVewInit",result.get(i).getText()); 

Answer 2

@kevz

我认为你原来的答复是不够好。不需要异步任务。我创建了一个小项目来测试你的想法，它工作！试图将它们与我的代码结合起来会导致一团糟。下面请看，以防万一它有助于任何人：

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context=".Places"> 
    <Button 
     android:layout_height="wrap_content" 
     android:layout_width="wrap_content" 
     android:text="@string/text_author" 
     android:id="@+id/button_id"/> 
</RelativeLayout> 

及以下，应该是足够了：

import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.widget.Button; 

import org.json.JSONArray; 
import org.json.JSONException; 
import org.json.JSONObject; 

import java.io.IOException; 
import java.io.InputStream; 
import java.net.MalformedURLException; 
import java.net.URL; 

public class Places extends AppCompatActivity { 
    Button button; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_places); 
     button = (Button) findViewById(R.id.button_id); 

     button.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
       // Perform action on click 
       new Thread(new Runnable() { 
        @Override 
        public void run() { 

         try { 

          URL url = new java.net.URL("https://maps.googleapis.com/maps/api/place/details/json?placeid=ChIJN1t_tDeuEmsRUsoyG83frY4&key=AIzaSyAAkK3AyE8Cbqb9H5MYqptjJwRhRgltoZM"); 
          //HttpURLConnection connection = (HttpURLConnection) url.openConnection(); 
          InputStream in = url.openStream(); 

          int ch = -1; 
          StringBuffer buffer = new StringBuffer(); 
          while ((ch = in.read()) != -1) { 
           buffer.append((char) ch); 
          } 

          JSONObject jObj = new JSONObject(buffer.toString()); 
          JSONObject jResult = jObj.getJSONObject("result"); 
          JSONArray jReviewArray = jResult.getJSONArray("reviews"); 
          //Float rating = (float)jResult.getDouble("rating"); 
          for (int i = 0; i < jReviewArray.length(); i++) { 
           JSONObject jReview = jReviewArray.getJSONObject(i); 
           Log.e("review",jReview.getString("author_name") + "\n" + jReview.getString("text") + "\n\n"); 
           Log.e("rating", jResult.getString("rating") + "\n"); 
          } 

         } catch (MalformedURLException e) { 
          e.printStackTrace(); 
         } catch (IOException | JSONException e) { 
          e.printStackTrace(); 
         } 

        } 
       }).start(); 
      } 
     }); 

    } 
} 

这是输出：

Justine OBRIEN 
                      Fabulous location. Wonderful warm welcoming reception. Excellent unique living Google wall entry. Sensational helpful kind people. Easy fast efficient help online plus with appointment on site. Super company always progressive plus innovative products and services for all businesses. Go Google Australia. Shine on! 
E/rating: 4.6 
E/review: James Pallett 
                      I can not understand why Google would choose Titan Digital as one their 14 Premier Partners. It was on this basis that I choose Titan to build my new web site. It is costing me dearly. All words, no action, over promise, under deliver. My second biggest complaint, of many, about Titan, after the total mismanagement of my project, is Titan's lack of communication. Days and weeks go by without a word. Inquiries are either ignored or treated with indifference. Almost eight months have passed since I signed up for a new web site and inquiries receive no urgency, only platitudes. To add insult to injury, Titan has the audacity to charge for monthly web maintenance for a web site still long overdue in production. Be warned. 
E/rating: 4.6 
E/review: Dorothy Ooko 
                      Cool offices.... Reception on the 5th floor. Best coffee barrista is on the 4thð 
E/rating: 4.6 
E/review: Taylor Hayes 
                      Absolute joke trying to find who to deal with in regards to services i have paid for. Happy to take the money and told its all easy . . . .weeks i have waited to finish verifying my coffee shop after purchasing a virtual tour pathetic aftercare 
E/rating: 4.6 
E/review: TheHealthRetreat 
                      I spend 250 thousand dollars a year with Google adwords.. 
                      I own a Mental Health Drug and alcohol retreat. 
E/rating: 4.6 
E/review: Justine OBRIEN 
                      Fabulous location. Wonderful warm welcoming reception. Excellent unique living Google wall entry. Sensational helpful kind people. Easy fast efficient help online plus with appointment on site. Super company always progressive plus innovative products and services for all businesses. Go Google Australia. Shine on! 
E/rating: 4.6 
E/review: James Pallett 
                      I can not understand why Google would choose Titan Digital as one their 14 Premier Partners. It was on this basis that I choose Titan to build my new web site. It is costing me dearly. All words, no action, over promise, under deliver. My second biggest complaint, of many, about Titan, after the total mismanagement of my project, is Titan's lack of communication. Days and weeks go by without a word. Inquiries are either ignored or treated with indifference. Almost eight months have passed since I signed up for a new web site and inquiries receive no urgency, only platitudes. To add insult to injury, Titan has the audacity to charge for monthly web maintenance for a web site still long overdue in production. Be warned. 
E/rating: 4.6 
E/review: Dorothy Ooko 
                      Cool offices.... Reception on the 5th floor. Best coffee barrista is on the 4thð 
E/rating: 4.6 
E/review: Taylor Hayes 
                      Absolute joke trying to find who to deal with in regards to services i have paid for. Happy to take the money and told its all easy . . . .weeks i have waited to finish verifying my coffee shop after purchasing a virtual tour pathetic aftercare 
E/rating: 4.6 
E/review: TheHealthRetreat 
                      I spend 250 thousand dollars a year with Google adwords.. 
                      I own a Mental Health Drug and alcohol retreat. 
E/rating: 4.6 
E/review: Justine OBRIEN 
                      Fabulous location. Wonderful warm welcoming reception. Excellent unique living Google wall entry. Sensational helpful kind people. Easy fast efficient help online plus with appointment on site. Super company always progressive plus innovative products and services for all businesses. Go Google Australia. Shine on! 
E/rating: 4.6 
E/review: James Pallett 
                      I can not understand why Google would choose Titan Digital as one their 14 Premier Partners. It was on this basis that I choose Titan to build my new web site. It is costing me dearly. All words, no action, over promise, under deliver. My second biggest complaint, of many, about Titan, after the total mismanagement of my project, is Titan's lack of communication. Days and weeks go by without a word. Inquiries are either ignored or treated with indifference. Almost eight months have passed since I signed up for a new web site and inquiries receive no urgency, only platitudes. To add insult to injury, Titan has the audacity to charge for monthly web maintenance for a web site still long overdue in production. Be warned. 
E/rating: 4.6 
E/review: Dorothy Ooko 
                      Cool offices.... Reception on the 5th floor. Best coffee barrista is on the 4thð 
E/rating: 4.6 
E/review: Taylor Hayes 
                      Absolute joke trying to find who to deal with in regards to services i have paid for. Happy to take the money and told its all easy . . . .weeks i have waited to finish verifying my coffee shop after purchasing a virtual tour pathetic aftercare 
E/rating: 4.6 
E/review: TheHealthRetreat 
                      I spend 250 thousand dollars a year with Google adwords.. 
                      I own a Mental Health Drug and alcohol retreat. 
E/rating: 4.6