准确HttpUrlConnection

package com.bwie.banner_pulltorfl;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;


/**
 * Created by ${王新杰} on 2017/10/23.
 */


public class HttpUrlConnection {
    public static String getJson(String urldata) {
        try {
            URL url = new URL(urldata);
            HttpURLConnection httpurlConnection = (HttpURLConnection) url.openConnection();
            httpurlConnection.setRequestMethod("GET");
            httpurlConnection.setReadTimeout(8000);
            int responseCode = httpurlConnection.getResponseCode();
            if (responseCode == 200) {
                InputStream inputStream = httpurlConnection.getInputStream();
                StringBuilder stringBuilder = new StringBuilder();
                BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
                String json = "";
                while ((json = bufferedReader.readLine()) != null) {
                    stringBuilder.append(json);
                }
                return stringBuilder.toString();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return "";
    }
}