private String executeRequestWithEntity(HttpRequest request) {

    char[] contentBuf = null;

    repeat_req:
    while (true) {

        try (CloseableHttpResponse response = this.client.execute(host, request, context)) {

            HttpEntity httpEntity = response.getEntity();
            int rspCode = response.getStatusLine().getStatusCode();

            switch (rspCode) {
                case 401:
                    this.unAuthRspEvent.callingBack(this.userData);
                    setUserCredential();
                    continue repeat_req;
                case 500:
                    this.serverErrorEvent.callingBack();
                    break;
                case 200:
                    try (InputStreamReader reader = new InputStreamReader(httpEntity.getContent())) {
                        int length  = (int) httpEntity.getContentLength();
                        contentBuf = new char[length];
                        reader.read(contentBuf,0,length);
                        System.out.println(contentBuf);
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                    break repeat_req;
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return new String(contentBuf);
}


private void setUserCredential() {
    context.getCredentialsProvider().setCredentials(authScope,new UsernamePasswordCredentials(userData.getUser(),userData.getPass()));
}