通過okHttp3, 輸入URL ,返回String類型數據

/**
 * 通過okHttp3 請求網絡數據,返回String類型數據
 */

public class GetJsonData {
    private static String TAG = "TESTJSON";
    private static String data = "";

    public static String getJsonData(String urlStr) {
        OkHttpClient client = new OkHttpClient();
        Request request = new Request.Builder()
                .url(urlStr)
                .build();
        Call call = client.newCall(request);

        try {
            Response response = call.execute();
            data = response.body().string();
            Log.i(TAG, "獲取數據成功");
            Log.i(TAG, "response code =" + response.code());
            Log.i(TAG, "response body = " + data);

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

        return data;
    }
}