android - Restful API : Unable to get information from Wordpress Website

Question

我试图从我的 wordpress 网站获取内容。我想要指定帖子中的内容，您可以在那里看到:(理解，这个网站不是真实的，但它来自真实的网站，我只是替换了不同的标题、url 等)http://pastebin.com/PWuC8usi

我正在使用 Wordpress API (RESTFUL API)。

错误说:

Error parsing data Value <!DOCTYPE of type java.lang.String cannot be converted to JSONObject

@Override
        protected String doInBackground(String... params) {
            // TODO Auto-generated method stub
            InputStream inputStream = null;
            String result= null;
            HttpClient client = new DefaultHttpClient();
            HttpGet httpGet = new HttpGet(params[0]);

            try {

                HttpResponse response = client.execute(httpGet);
                inputStream = response.getEntity().getContent();

                // convert inputstream to string
                if(inputStream != null){
                    result = convertInputStreamToString(inputStream);
                    Log.i("App", "Data received:" +result);

                }
                else
                    result = "Failed to fetch data";

                return result;

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

            return null;
        }



 private void parseJSON(String data){

        try{
            JSONObject jsonResponse = new JSONObject(data);
            //JSONArray jsonMainNode = jsonResponse.getJSONArray("posts");
            JSONArray jsonMainNode = jsonResponse.getJSONArray("content");
            Log.i("App", "jsonMainNode = "+jsonMainNode);

            int jsonArrLength = jsonMainNode.length();
            Log.i("App", "jsonArrLength = "+jsonArrLength);



            for(int i=0; i < jsonArrLength; i++) {

                JSONObject jsonChildNode = jsonMainNode.getJSONObject(i);
                String postTitle = jsonChildNode.getString("title");
                String postUrl = jsonChildNode.getString("url");
                String postDate = jsonChildNode.getString("date");
                String postContent = jsonChildNode.getString("content");

                tvPostTitle.setText("Page title: " +postTitle);
                tvPostUrl.setText("Page URL: " +postUrl);
                tvPostDate.setText("Date: " +postDate);
                tvPostContent.setText("Content: " +android.text.Html.fromHtml(postContent).toString());
            }

        }catch(Exception e){
            Log.i("App", "Error parsing data " +e.getMessage());

        }
    }

Answer 1

您正在解析的字符串不是 JSON 格式。

以下 fragment :

try {
    String data = "<!DOCTYPE not a json data goes here ...";
    JSONObject jsonResponse = new JSONObject(data);
} catch (JSONException e) {
    Log.d("App", "Error parsing data " + e.getMessage());
}

会给你同样的错误信息:

Error parsing data Value <!DOCTYPE of type java.lang.String cannot be converted to JSONObject

我猜您正在连接到错误的 API 端点。检查您正在使用的 URL。使用您自己的网络浏览器连接到那里。