HttpClient的3种超时

原文：http://www.cnblogs.com/codingmyworld/archive/2011/08/17/2141706.html

HttpClient的3种超时说明

/* 从连接池中取连接的超时时间 */
ConnManagerParams.setTimeout(params, 1000);
/* 连接超时 */
HttpConnectionParams.setConnectionTimeout(params, 2000);
/* 请求超时 */
HttpConnectionParams.setSoTimeout(params, 4000);

第一行设置ConnectionPoolTimeout：这定义了从ConnectionManager管理的连接池中取出连接的超时时间，此处设置为1秒。

第二行设置ConnectionTimeout：　　这定义了通过网络与服务器建立连接的超时时间。Httpclient包中通过一个异步线程去创建与服务器的socket连接，这就是该socket连接的超时时间，此处设置为2秒。

第三行设置SocketTimeout：　　　　这定义了Socket读数据的超时时间，即从服务器获取响应数据需要等待的时间，此处设置为4秒。

示例1

package edu . cdut . robin ;

import org . apache . http . HttpVersion ;

import org . apache . http . client . HttpClient ;

import org . apache . http . conn . ClientConnectionManager ;

import org . apache . http . conn . params . ConnManagerParams ;

import org . apache . http . conn . scheme . PlainSocketFactory ;

import org . apache . http . conn . scheme . Scheme ;

import org . apache . http . conn . scheme . SchemeRegistry ;

import org . apache . http . conn . ssl . SSLSocketFactory ;

import org . apache . http . impl . client . DefaultHttpClient ;

import org . apache . http . impl . conn . tsccm . ThreadSafeClientConnManager ;

import org . apache . http . params . BasicHttpParams ;

import org . apache . http . params . HttpConnectionParams ;

import org . apache . http . params . HttpParams ;

import org . apache . http . params . HttpProtocolParams ;

import org . apache . http . protocol . HTTP ;

public class CustomerHttpClient

{

private static final String CHARSET = HTTP . UTF_8 ;

private static HttpClient customerHttpClient ;

private CustomerHttpClient ()

{

}

public static synchronized HttpClient getHttpClient ()

{

if ( null == customerHttpClient )

{

HttpParams params = new BasicHttpParams ();

/* 设置一些基本参数 */

HttpProtocolParams . setVersion ( params , HttpVersion . HTTP_1_1 );

HttpProtocolParams . setContentCharset ( params , CHARSET );

HttpProtocolParams . setUseExpectContinue ( params , true );

HttpProtocolParams

. setUserAgent (

params ,

"Mozilla/5.0(Linux;U;Android 2.2.1;en-us;Nexus One Build.FRG83) "

+ "AppleWebKit/553.1(KHTML,like Gecko) Version/4.0 Mobile Safari/533.1" );

/* 超时设置 */

/* 从连接池中取连接的超时时间 */

ConnManagerParams . setTimeout ( params , 1000 );

/* 连接超时 */

HttpConnectionParams . setConnectionTimeout ( params , 2000 );

/* 请求超时 */

HttpConnectionParams . setSoTimeout ( params , 4000 );

/* 设置我们的HttpClient支持HTTP和HTTPS两种模式 */

SchemeRegistry schReg = new SchemeRegistry ();

schReg . register ( new Scheme ( "http" , PlainSocketFactory

. getSocketFactory (), 80 ));

schReg . register ( new Scheme ( "https" , SSLSocketFactory

. getSocketFactory (), 443 ));

/* 使用线程安全的连接管理来创建HttpClient */

ClientConnectionManager conMgr = new ThreadSafeClientConnManager (

params , schReg );

customerHttpClient = new DefaultHttpClient ( conMgr , params );

}

return customerHttpClient ;

}

}

示例2

void doHttpGet ( String userAgent , Context context , String uri )

{

AndroidHttpClient client = null ;

client = AndroidHttpClient . newInstance ( userAgent , context );

HttpParams params = client . getParams ();

HttpConnectionParams . setConnectionTimeout ( params , 30000 );

HttpConnectionParams . setSoTimeout ( params , 60000 );

HttpClientParams . setRedirecting ( params , true );

HttpClientParams . setAuthenticating ( params , false );

HttpResponse response ;

HttpGet request = new HttpGet ( uri );

try

{

response = client . execute ( request );

} catch ( IllegalArgumentException ex )

{

} catch ( IOException ex )

{

}

}

结束！