http 請求 response 417 解決方案

http 請求時，有時候會response417錯誤，只要new httpClient時設置屬性即可解決：直接貼代碼

1. HttpClient httpClient = new DefaultHttpClient();
   
2. HttpParams httpParams = httpClient.getParams();
   
3. httpParams.setParameter(CoreProtocolPNames.USE_EXPECT_CONTINUE, false);