HTTP get JSON from URL - Android Network

Android examples for Network:HTTP Get

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Description

HTTP get JSON from URL

Demo Code


//package com.java2s;
import android.net.Uri;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class Main {
    public static String getJSON(Uri requestUri) {

        HttpURLConnection urlConnection = null;
        BufferedReader reader = null;
        String jsonStr = null;//w  ww.ja v a 2 s  .c om

        try {
            URL url = new URL(requestUri.toString());
            urlConnection = (HttpURLConnection) url.openConnection();
            urlConnection.setRequestMethod("GET");
            urlConnection.connect();
            InputStream inputStream = urlConnection.getInputStream();
            StringBuffer buffer = new StringBuffer();
            if (inputStream == null) {
                return null;
            }
            reader = new BufferedReader(new InputStreamReader(inputStream));
            String line;
            while ((line = reader.readLine()) != null) {
                buffer.append(line);
            }
            if (buffer.length() == 0) {
                return null;
            }
            jsonStr = buffer.toString();
        } catch (IOException e) {
            return null;
        } finally {
            if (urlConnection != null) {
                urlConnection.disconnect();
            }
            if (reader != null) {
                try {
                    reader.close();
                } catch (final IOException ignored) {
                }
            }
        }
        return jsonStr;
    }
}

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