Question

我很难获得JSON数组以及如何从JSON响应中精确定位特定数组。我必须从http://boilerpipe-web.appspot.com/extract?url=http%3A%2F%2Fwww.imdb.com%2Fmovies-in-theaters%2F%3Fref_%3Dnv_tp_inth_1&extractor=ArticleExtractor&output=json&extractImages=3&token=

获取所有图片网址

所以我的结果json应该是这样的，因为我只需要为我的应用程序使用image src和alt。

  {
 "images":
 [{
 "src":"https://images-na.ssl-images-amazon.com/images/M/MV5BMTQ5ODE4MTY2NV5BMl5BanBnXkFtZTgwMzM2NzEzMDI@._V1_UY209_C R0,0,140,209_AL_.jpg",
 "alt":"Collateral Beauty (2016) Poster"
 },
 {
 "src":"https://images-na.ssl-images-amazon.com/images/M/MV5BMjAwNDA1NjcwN15BMl5BanBnXkFtZTgwMDY0MDA2MDI@._V1_UY209_C R0,0,140,209_AL_.jpg",
 "alt":"A Kind of Murder (2016) Poster"
 },
 {
 "src":"https://images-na.ssl-images-amazon.com/images/M/MV5BMjA5MzgyNTIzMF5BMl5BanBnXkFtZTgwODg1OTY1MDI@._V1_UX140_C R0,0,140,209_AL_.jpg",
  "alt":"Solace (2015) Poster"
  },
  {
  "src":"https://images-na.ssl-images-amazon.com/images/M/MV5BOTg0Nzc1NjA0MV5BMl5BanBnXkFtZTgwNTcyNDQ0MDI@._V1_UX140_C R0,0,140,209_AL_.jpg",
 "alt":"Fences (2016) Poster"
  },
  {
  "src":"https://images-na.ssl-images-amazon.com/images/M/MV5BMTYxMjk0NDg4Ml5BMl5BanBnXkFtZTgwODcyNjA5OTE@._V1_UY209_CR0,0,140,209_AL_.jpg",
  "alt":"Manchester by the Sea (2016) Poster"
  },
  {
  "src":"https://images-na.ssl-images-amazon.com/images/M/MV5BMjI4MzU5NTExNF5BMl5BanBnXkFtZTgwNzY1MTEwMDI@._V1_UY209_CR0,0,140,209_AL_.jpg",
  "alt":"Moana (2016) Poster"
 }]
 }

编辑

经过一些指导，我做了一些更改，我的代码看起来像这样。

public class Main2Activity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        TextView output = (TextView) findViewById(R.id.textView1);

        String strJson="http://boilerpipe-web.appspot.com/extract?url=http%3A%2F%2Fwww.imdb.com%2Fmovies-in-theaters%2F%3Fref_%3Dnv_tp_inth_1&extractor=KeepEverythingExtractor&output=img&extractImages=3&token=";
        String data = "";
        try {
            try {
                URL url=new URL(strJson);
                HttpURLConnection httpURLConnection=(HttpURLConnection)url.openConnection(); 
                httpURLConnection.connect();
                httpURLConnection.setDoInput(true);

                JSONObject  jsonRootObject = new JSONObject(strJson);
                JSONArray jsonArray = jsonRootObject.optJSONArray("images");
                for(int i=0; i < jsonArray.length(); i++){
                    JSONObject jsonObject = jsonArray.getJSONObject(i);
                    String name = jsonObject.optString("alt").toString();
                    String image = jsonObject.optString("src").toString();
                    data += "Node"+i+" : \n Name= "+ name+" \n Image="+image;
                }
                output.setText(data);
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }

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

但我仍然无法从我给出的网址获取数据。

Answer 1

考虑到你使用的是android

提供的普通JSONObject类

    JSONObject jObj= new JSONObject(response);
    JSONArray jArray=jObj.getJSONArray("images");

然后使用for循环从该数组中获取数据

Answer 2

假设您的回复是字符串

JSONObject object=new JSONObject(response);
            JSONArray imageArray= object.getJSONObject("response").getJSONArray("images");

但如果你的回复已经是JSON格式，那么你只需要这样做

 JSONArray imageArray= response.getJSONObject("response").getJSONArray("images");

Answer 3

JSONObject jObj = new JSONObject（response）;       JSONArray jArray = jObj.getJSONArray（“images”）;对于（I = 0;我

String image = object.getString（“src”）;

//然后将其添加到lis

}

如何从url

3 个答案: