java.net.SocketException: socket failed: EACCES (Permission denied) 异常

public class HttpPostTask extends AsyncTask<String, String, String> {

    /** BaseActivity 中基础问题的处理 handler */

    private Handler mHandler;

    /** 返回信息处理回调接口 */

    private ResponseHandler rHandler;

    /** 请求类对象 */

    private CommonRequest request;

    public HttpPostTask(CommonRequest request,

                        Handler mHandler,

                        ResponseHandler rHandler) {

        this.request = request;

        this.mHandler = mHandler;

        this.rHandler = rHandler;

    }

    @Override

    protected String doInBackground(String... params) {

        StringBuilder resultBuf = new StringBuilder();

        try {

            URL url = new URL(params[0]);

            // 第一步：使用URL打开一个HttpURLConnection连接

            HttpURLConnection connection = (HttpURLConnection) url.openConnection();

            // 第二步：设置HttpURLConnection连接相关属性

            connection.setRequestProperty("Content-Type", "application/json;charset=utf-8");

            connection.setRequestMethod("POST"); // 设置请求方法，“POST或GET”

            connection.setConnectTimeout(80000); // 设置连接建立的超时时间

            connection.setReadTimeout(80000); // 设置网络报文收发超时时间

            connection.setDoOutput(true);

            connection.setDoInput(true);

            // 如果是POST方法，需要在第3步获取输入流之前向连接写入POST参数

            DataOutputStream out = new DataOutputStream(connection.getOutputStream());

            out.writeBytes(request.getJsonStr());

            out.flush();

            out.close();

            // 第三步：打开连接输入流读取返回报文 -> *注意*在此步骤才真正开始网络请求

            int responseCode = connection.getResponseCode();

            if (responseCode == HttpURLConnection.HTTP_OK) {

                // 通过连接的输入流获取下发报文，然后就是Java的流处理

                InputStream in = connection.getInputStream();

                BufferedReader read = new BufferedReader(new InputStreamReader(in));

                String line;

                while((line = read.readLine()) != null) {

                    resultBuf.append(line);

                }

                return resultBuf.toString();

            } else {

                // 异常情况，如404/500...

                mHandler.obtainMessage(Constant.HANDLER_HTTP_RECEIVE_FAIL,

                        "[" + responseCode + "]" + connection.getResponseMessage()).sendToTarget();

            }

        } catch (IOException e) {

            // 网络请求过程中发生IO异常

            e.printStackTrace();

            mHandler.obtainMessage(Constant.HANDLER_HTTP_SEND_FAIL,

                    e.getClass().getName() + " : " + e.getMessage()).sendToTarget();

        }

        return resultBuf.toString();

    }

    @Override

    protected void onPostExecute(String result) {

        if (rHandler != null) {

            if (!"".equals(result)) {

                /* 交易成功时需要在处理返回结果时手动关闭Loading对话框，可以灵活处理连续请求多个接口时Loading框不断弹出、关闭的情况 */

                CommonResponse response = new CommonResponse(result);

                // 这里response.getResCode()为多少表示业务完成也是和服务器约定好的

                if ("0".equals(response.getResCode())) { // 正确

                    rHandler.success(response);

                } else {

                    rHandler.fail(response.getResCode(), response.getResMsg());

                }

            }

        }

    }

}