httpclient 超时时间 等待时间 响应时间

HttpClient在使用中有两个超时时间。

一、连接超时：connectionTimeout
   1.指的是连接一个url的连接等待时间。
   2.设置方法为：

HttpClient client = new HttpClient();
HttpMethod method = new GetMethod("http://test.com");
client.getHttpConnectionManager().getParams().setConnectionTimeout(3000);

HttpClient client = new HttpClient();
HttpMethod method = new GetMethod("http://test.com");   
client.getHttpConnectionManager().getParams().setConnectionTimeout(3000);  

   3.测试的时候，将url改为一个不存在的url：“http://test.com”
   4：超时时间3000ms过后，系统报出异常。
     org.apache.commons.httpclient.ConnectTimeoutException: The host did not accept the connection within timeout of 3000 ms

二、读取数据超时：soTimeout
   1.指的是连接上一个url，获取response的返回等待时间
   2.设置方法伟：

HttpClient client = new HttpClient();
HttpMethod method = new GetMethod("http://localhost:8080/firstTest.htm?method=test");
client.getHttpConnectionManager().getParams().setSoTimeout(2000);

HttpClient client = new HttpClient();
HttpMethod method = new GetMethod("http://localhost:8080/firstTest.htm?method=test");
client.getHttpConnectionManager().getParams().setSoTimeout(2000);

   3.测试的时候的连接url为我本地开启的一个url，http://localhost:8080/firstTest.htm?method=test，在我这个测试url里，当访问到这个链接时，线程sleep一段时间，来模拟返回response超时。

@RequestMapping(params = "method=test")
public String testMethod(ModelMap model) {
try {
    Thread.sleep(3000);
} catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}
      System.out.println("call testMethod method.");
      model.addAttribute("name", "test method");
return "test";
  }

@RequestMapping(params = "method=test")
public String testMethod(ModelMap model) {    
try {    
    Thread.sleep(3000);    
} catch (InterruptedException e) {    
    // TODO Auto-generated catch block    
    e.printStackTrace();    
}    
      System.out.println("call testMethod method.");    
      model.addAttribute("name", "test method");    
return "test";    
  }

   4：将读取response返回超时时间设的时间比那个sleep时间短之后，运行程序给出异常：java.net.SocketTimeoutException: Read timed out

4.3版本不设置超时的话，一旦服务器没有响应，等待时间N久(>24小时)。  以上版本对4.3已经过时

4.3版本超时设置

1 2 3 4 5

CloseableHttpClient httpClient = HttpClients.createDefault(); HttpGet httpGet= new HttpGet( "http://www.baidu.com" );//HTTP Get请求(POST雷同) RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout( 2000 ).setConnectTimeout( 2000 ).build(); //设置请求和传输超时时间 httpGet.setConfig(requestConfig); httpClient.execute(httpGet); //执行请求