1. //private static HttpClient httpClient = HttpClientBuilder.create().build();

2. private static CloseableHttpClient httpClient;// = HttpClientBuilder.create().build(); //no timeout handling...

4. static {

5. RequestConfig.Builder requestConfigBuilder = RequestConfig.custom();

6. //客戶端和服務器建立連接的timeout

7. requestConfigBuilder.setConnectTimeout(30000

   );

8. //從連接池獲取連接的timeout

9. requestConfigBuilder.setConnectionRequestTimeout(30000);

10. //連接建立後，request沒有回應的timeout

11. requestConfigBuilder.setSocketTimeout(30000);

13. HttpClientBuilder clientBuilder = HttpClientBuilder.create();

14. clientBuilder.setDefaultRequestConfig(requestConfigBuilder.build());

15. clientBuilder.setDefaultSocketConfig(SocketConfig.custom().setSoTimeout(30000

    ).build()); //連接建立後，request沒有回應的timeout

16. clientBuilder.setKeepAliveStrategy(new DefaultConnectionKeepAliveStrategy());

17. httpClient = clientBuilder.build();

創建httpClient時，設置timeout時間