java网络爬虫连接超时解决实例代码

Exception in thread "main" java.net.ConnectException: Connection timed out: connect

package daili;import java.io.IOException;import java.net.URI;import org.apache.http.HttpRequest;import org.apache.http.HttpResponse;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.methods.HttpGet;import org.apache.http.client.params.CookiePolicy;import org.apache.http.client.protocol.ClientContext;import org.apache.http.impl.client.BasicCookieStore;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.impl.client.DefaultHttpRequestRetryHandler;import org.apache.http.impl.client.HttpClients;import org.apache.http.impl.cookie.BasicClientCookie2;import org.apache.http.params.HttpConnectionParams;import org.apache.http.params.HttpParams;import org.apache.http.protocol.BasicHttpContext;import org.apache.http.protocol.ExecutionContext;import org.apache.http.protocol.HttpContext;import org.apache.http.util.EntityUtils;/* * author:合肥工业大学 管院学院 钱洋  *1563178220@qq.com*/public class Test1 {	public static void main(String[] args) throws ClientProtocolException, IOException, InterruptedException {		getRawHTML("http://club.autohome.com.cn/bbs/forum-c-2098-1.html#pvareaid=103447");	}	public static String getRawHTML ( String url ) throws ClientProtocolException, IOException, InterruptedException{		//初始化		DefaultHttpClient httpclient = new DefaultHttpClient();		httpclient.getParams().setParameter("http.protocol.cookie-policy", 		        CookiePolicy.BROWSER_COMPATIBILITY);		//设置参数		HttpParams params = httpclient.getParams();		//连接时间		HttpConnectionParams.setConnectionTimeout(params, 6000);		HttpConnectionParams.setSoTimeout(params, 6000*20);		//超时重新请求次数		DefaultHttpRequestRetryHandler dhr = new DefaultHttpRequestRetryHandler(5,true);		HttpContext localContext = new BasicHttpContext();		HttpRequest request2 = (HttpRequest) localContext.getAttribute( 		        ExecutionContext.HTTP_REQUEST);		httpclient.setHttpRequestRetryHandler(dhr);		BasicCookieStore cookieStore = new BasicCookieStore();		BasicClientCookie2 cookie = new BasicClientCookie2("Content-Type","text/html;charset=UTF-8");		BasicClientCookie2 cookie1 = new BasicClientCookie2("User-Agent","Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36");		cookieStore.addCookie(cookie);		cookieStore.addCookie(cookie1);		localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);		HttpGet request = new HttpGet();		request.setURI(URI.create(url));		HttpResponse response = null;		String rawHTML = "";		response = httpclient.execute(request,localContext);		int StatusCode = response.getStatusLine().getStatusCode();		//获取响应状态码		System.out.println(StatusCode);		if(StatusCode == 200){			//状态码200表示响应成功			//获取实体内容			rawHTML = EntityUtils.toString (response.getEntity());			System.out.println(rawHTML);			//输出实体内容			EntityUtils.consume(response.getEntity());			//消耗实体		} else {			//关闭HttpEntity的流实体			EntityUtils.consume(response.getEntity());			//消耗实体			Thread.sleep(20*60*1000);			//如果报错先休息30分钟		}		httpclient.close();		System.out.println(rawHTML);		return rawHTML;	}}