HttpClient4.X Invalid use of SingleClientConnManager: connection still allocated

HttpClient4.X Invalid use of SingleClientConnManager: connection still allocated问题

 

项目用到了httpclient4.1开发。在多线程的情况下，异常报

 

Invalid use of SingleClientConnManager: connection still allocated

 

从国外的一张帖子看到，httpclient默认使用的是SingleClientConnManager，但在并发环境下最好使用ThreadSafeClientConnManager。代码如下：

 

HttpClient client = new DefaultHttpClient(new ThreadSafeClientConnManager());

 

HttpGet httpGet = null;

 

InputStream in = null;

 

try {

 

httpGet = new HttpGet(url);

 

HttpResponse response = client.execute(httpGet);

 

HttpEntity responseEntity = response.getEntity();

 

if (responseEntity != null) {

 

in = response.getEntity().getContent();

 

return EntityUtils.toByteArray(responseEntity);

 

}

 

} finally {

 

if (httpGet != null) {

 

httpGet.abort();

 

}

 

IOUtils.closeQuietly(in);

 

}

 

return null;

 

这样就可以避免发生异常，感谢国外的这个帖子

 

http://old.nabble.com/HttpClient-instance-management-td24185137.html

 

 

 

http超时处理：

 

使用是apache的HttpClient：

DefaultHttpClient:
请求超时
httpclient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 60000);
读取超时
httpclient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 60000);

HttpClient
HttpClient httpClient=new HttpClient();
链接超时
httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(60000); 
读取超时
httpClient.getHttpConnectionManager().getParams().setSoTimeout(60000)