具有已定义超时的Java HTTP客户端请求 [英] Java HTTP Client Request with defined timeout

问题描述

我想在我的云中为多个服务器制作BIT（内置测试）。我需要请求在大超时时失败。

I would like to make BIT (Built in tests) to a number of server in my cloud. I need the request to fail on large timeout.

我应该如何使用java？

How should I do this with java?

尝试某事如下所示似乎不起作用。

Trying something like the below does not seem to work.

public class TestNodeAliveness {
 public static NodeStatus nodeBIT(String elasticIP) throws ClientProtocolException, IOException {
  HttpClient client = new DefaultHttpClient();
  client.getParams().setIntParameter("http.connection.timeout", 1);

  HttpUriRequest request = new HttpGet("http://192.168.20.43");
  HttpResponse response = client.execute(request);

  System.out.println(response.toString());
  return null;
 }


 public static void main(String[] args) throws ClientProtocolException, IOException {
  nodeBIT("");
 }
}

- 编辑：澄清正在使用的库 - -

-- Clarify what library is being used --

我正在使用来自apache的httpclient，这是相关的pom.xml部分

I'm using httpclient from apache, here is the relevant pom.xml section

 <dependency>
   <groupId>org.apache.httpcomponents</groupId>
   <artifactId>httpclient</artifactId>
   <version>4.0.1</version>
   <type>jar</type>
 </dependency>

推荐答案

import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;

...

    // set the connection timeout value to 30 seconds (30000 milliseconds)
    final HttpParams httpParams = new BasicHttpParams();
    HttpConnectionParams.setConnectionTimeout(httpParams, 30000);
    client = new DefaultHttpClient(httpParams);

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