HttpClient的3种超时

更新日期: 2019-01-07阅读: 2.9k标签: http分享

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/* 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;
 
publicclassCustomerHttpClient
{
    privatestaticfinalString CHARSET = HTTP.UTF_8;
    privatestaticHttpClient customerHttpClient;
 
    privateCustomerHttpClient()
    {
    }
 
    publicstaticsynchronizedHttpClient getHttpClient()
    {
        if(null== customerHttpClient)
        {
            HttpParamsparams=newBasicHttpParams();
            /* 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 =newSchemeRegistry();
            schReg.register(newScheme("http",PlainSocketFactory
                    .getSocketFactory(),80));
            schReg.register(newScheme("https",SSLSocketFactory
                    .getSocketFactory(),443));
 
            /* 使用线程安全的连接管理来创建HttpClient */
            ClientConnectionManager conMgr =newThreadSafeClientConnManager(
                    params, schReg);
            customerHttpClient =newDefaultHttpClient(conMgr,params);
        }
        return customerHttpClient;
    }
}

示例2

void doHttpGet(String userAgent,Context context,String uri)
    {
        AndroidHttpClient client =null;
        client =AndroidHttpClient.newInstance(userAgent, context);
        HttpParamsparams= client.getParams();
        HttpConnectionParams.setConnectionTimeout(params,30000);
        HttpConnectionParams.setSoTimeout(params,60000);
        HttpClientParams.setRedirecting(params,true);
        HttpClientParams.setAuthenticating(params,false);
        HttpResponse response;
        HttpGet request =newHttpGet(uri);
        try
        {
            response = client.execute(request);
        }catch(IllegalArgumentException ex)
        {
        }catch(IOException ex)
        {
        }
 
    }

链接: https://fly63.com/article/detial/1792

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