HttpClient的3种超时

# 前端 2024-05-05 15:34 0 34 来源：云博客

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
)

{

}

}