private void configureHttpProcessorBuilder(final HttpClientBuilder builder, final WebRequest webRequest) {
    final HttpProcessorBuilder b = HttpProcessorBuilder.create();
    for (final HttpRequestInterceptor i : getHttpRequestInterceptors(webRequest)) {
        b.add(i);
    }

    // These are the headers used in HttpClientBuilder, excluding the already added ones
    // (RequestClientConnControl and RequestAddCookies)
    b.addAll(new RequestDefaultHeaders(null),
            new RequestContent(),
            new RequestTargetHost(),
            new RequestExpectContinue());
    b.add(new RequestAcceptEncoding());
    b.add(new RequestAuthCache());
    b.add(new ResponseProcessCookies());
    builder.setHttpProcessor(b.build());
}
 

@Test
public void postRequest() throws HttpException, IOException {
    // Processor is required because it will determine the final request body including
    // headers before outgoing.
    RequestContent processor = new RequestContent();
    Map<String, String> params = new HashMap<String, String>();
    params.put("a", "1");
    params.put("b", "2+");
    params.put("c", "3 ");
    
    HttpUriRequest request;
    
    request = SentinelApiClient.postRequest("/test", params, false);
    assertNotNull(request);
    processor.process(request, null);
    assertNotNull(request.getFirstHeader("Content-Type"));
    assertEquals("application/x-www-form-urlencoded", request.getFirstHeader("Content-Type").getValue());
    
    request = SentinelApiClient.postRequest("/test", params, true);
    assertNotNull(request);
    processor.process(request, null);
    assertNotNull(request.getFirstHeader("Content-Type"));
    assertEquals("application/x-www-form-urlencoded; charset=UTF-8", request.getFirstHeader("Content-Type").getValue());
}
 

public static CloseableHttpClient create(RequestConfig config, HttpRequestRetryHandler retryHandler, HttpClientConnectionManager connectionManager) {
    HttpClientBuilder builder = HttpClientBuilder.create();
    builder.useSystemProperties().setRedirectStrategy(AlwaysRedirectStrategy.DEFAULT).addInterceptorLast(new RequestContent(true));
    if (config != null)
        builder.setDefaultRequestConfig(config);
    if (retryHandler != null)
        builder.setRetryHandler(retryHandler);
    if (connectionManager != null)
        builder.setConnectionManager(connectionManager);
    return builder.build();
}
 

public static CloseableHttpAsyncClient create(RequestConfig config, NHttpClientConnectionManager connectionManager) {
    HttpAsyncClientBuilder builder = HttpAsyncClientBuilder.create();
    builder.useSystemProperties().setRedirectStrategy(AlwaysRedirectStrategy.DEFAULT).addInterceptorLast(new RequestContent(true));
    if (config != null)
        builder.setDefaultRequestConfig(config);
    if (connectionManager != null)
        builder.setConnectionManager(connectionManager);
    return builder.build();
}
 

private void initialize() {
	if (initialized.getAndSet(true)) {
		return;
	}
	IOReactorConfig.Builder config = createConfig();
	// params.setParameter(CoreProtocolPNames.USER_AGENT, "jsonrpc4j/1.0");
	final ConnectingIOReactor ioReactor = createIoReactor(config);
	createSslContext();
	int socketBufferSize = Integer.getInteger("com.googlecode.jsonrpc4j.async.socket.buffer", 8 * 1024);
	final ConnectionConfig connectionConfig = ConnectionConfig.custom().setBufferSize(socketBufferSize).build();
	BasicNIOConnFactory nioConnFactory = new BasicNIOConnFactory(sslContext, null, connectionConfig);
	pool = new BasicNIOConnPool(ioReactor, nioConnFactory, Integer.getInteger("com.googlecode.jsonrpc4j.async.connect.timeout", 30000));
	pool.setDefaultMaxPerRoute(Integer.getInteger("com.googlecode.jsonrpc4j.async.max.inflight.route", 500));
	pool.setMaxTotal(Integer.getInteger("com.googlecode.jsonrpc4j.async.max.inflight.total", 500));
	
	Thread t = new Thread(new Runnable() {
		@Override
		public void run() {
			try {
				HttpAsyncRequestExecutor protocolHandler = new HttpAsyncRequestExecutor();
				IOEventDispatch ioEventDispatch = new DefaultHttpClientIODispatch(protocolHandler, sslContext, connectionConfig);
				ioReactor.execute(ioEventDispatch);
			} catch (InterruptedIOException ex) {
				System.err.println("Interrupted");
			} catch (IOException e) {
				System.err.println("I/O error: " + e.getMessage());
			}
		}
	}, "jsonrpc4j HTTP IOReactor");
	
	t.setDaemon(true);
	t.start();
	
	HttpProcessor httpProcessor = new ImmutableHttpProcessor(new RequestContent(), new RequestTargetHost(), new RequestConnControl(), new RequestUserAgent(), new RequestExpectContinue(false));
	requester = new HttpAsyncRequester(httpProcessor, new DefaultConnectionReuseStrategy());
}
 

public static void main(String[] args) throws Exception {
	  OAuthConsumer consumer = new CommonsHttpOAuthConsumer(
				Constants.ConsumerKey,
				Constants.ConsumerSecret);
	  consumer.setTokenWithSecret(Constants.AccessToken, Constants.AccessSecret);
	  
	  
    HttpParams params = new BasicHttpParams();
    // HTTP 协议的版本,1.1/1.0/0.9
    HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
    // 字符集
    HttpProtocolParams.setContentCharset(params, "UTF-8");
    // 伪装的浏览器类型
    // IE7 是 
    // Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 6.0)
    //
    // Firefox3.03
    // Mozilla/5.0 (Windows; U; Windows NT 5.2; zh-CN; rv:1.9.0.3) Gecko/2008092417 Firefox/3.0.3
    //
    HttpProtocolParams.setUserAgent(params, "HttpComponents/1.1");
    HttpProtocolParams.setUseExpectContinue(params, true);
    BasicHttpProcessor httpproc = new BasicHttpProcessor();
    httpproc.addInterceptor(new RequestContent());
    httpproc.addInterceptor(new RequestTargetHost());
    httpproc.addInterceptor(new RequestConnControl());
    httpproc.addInterceptor(new RequestUserAgent());
    httpproc.addInterceptor(new RequestExpectContinue());
    HttpRequestExecutor httpexecutor = new HttpRequestExecutor();
    HttpContext context = new BasicHttpContext(null);
    HttpHost host = new HttpHost("127.0.0.1", 1080);
    DefaultHttpClientConnection conn = new DefaultHttpClientConnection();
    ConnectionReuseStrategy connStrategy = new DefaultConnectionReuseStrategy();
    context.setAttribute(ExecutionContext.HTTP_CONNECTION, conn);
    context.setAttribute(ExecutionContext.HTTP_TARGET_HOST, host);
    try {
      String[] targets = { "https://www.twitter.com"};
      for (int i = 0; i < targets.length; i++) {
        if (!conn.isOpen()) {
          Socket socket = new Socket(host.getHostName(), host.getPort());
          conn.bind(socket, params);
        }
        
	  
        BasicHttpRequest request = new BasicHttpRequest("GET", targets[i]);
//        consumer.sign(request);
        
        System.out.println(">> Request URI: " + request.getRequestLine().getUri());
        context.setAttribute(ExecutionContext.HTTP_REQUEST, request);
        request.setParams(params);
        httpexecutor.preProcess(request, httpproc, context);
        HttpResponse response = httpexecutor.execute(request, conn, context);
        response.setParams(params);
        httpexecutor.postProcess(response, httpproc, context);
        // 返回码
        System.out.println("<< Response: " + response.getStatusLine());
        // 返回的文件头信息
//        Header[] hs = response.getAllHeaders();
//        for (Header h : hs) {
//          System.out.println(h.getName() + ":" + h.getValue());
//        }
        // 输出主体信息
//        System.out.println(EntityUtils.toString(response.getEntity()));
        
        HttpEntity entry = response.getEntity();
        StringBuffer sb = new StringBuffer();
  	  if(entry != null)
  	  {
  	    InputStreamReader is = new InputStreamReader(entry.getContent());
  	    BufferedReader br = new BufferedReader(is);
  	    String str = null;
  	    while((str = br.readLine()) != null)
  	    {
  	     sb.append(str.trim());
  	    }
  	    br.close();
  	  }
  	  System.out.println(sb.toString());
  	  
        System.out.println("==============");
        if (!connStrategy.keepAlive(response, context)) {
          conn.close();
        } else {
          System.out.println("Connection kept alive...");
        }
      }
    } finally {
      conn.close();
    }
  }