2016-05-25 08:58:34
昨天线上小白系统因为调用外部http接口,超时不释放,导致页面反应很慢,时间一长,报502错误。
上网查了下,502错误是因为服务对于客户的请求没有得到及时的反应,查询日志,发现很多调http接口异常,页面反应也很慢。
瞬间想到缩短http客户端调用http接口的超时时间,搜到这个博客http://blog.csdn.net/xinying0424/article/details/36006383 感谢
HttpClient 4: 连接超时: 连接超时 httpclient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT,60000); // 或者 HttpConnectionParams.setConnectionTimeout(params,6000); 读取超时: httpclient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT,60000); // 或者 HttpConnectionParams.setSoTimeout(params,60000); HttpClient 3: 连接超时: httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(60000); 读取超时: httpClient.getHttpConnectionManager().getParams().setSoTimeout(60000);
发现我本来代码里就写了这个,只是时间配置的实在太长
private static MultiThreadedHttpConnectionManager connectionManager = null; private static int connectionTimeOut = 2000;t private static int socketTimeOut = 10000; private static int maxConnectionPerHost = 20; private static int maxTotalConnections = 20; private static HttpClient client; static { connectionManager = new MultiThreadedHttpConnectionManager(); connectionManager.getParams().setConnectionTimeout(connectionTimeOut); connectionManager.getParams().setSoTimeout(socketTimeOut); connectionManager.getParams().setDefaultMaxConnectionsPerHost(maxConnectionPerHost); connectionManager.getParams().setMaxTotalConnections(maxTotalConnections); client = new HttpClient(connectionManager); }
然后我把socketTimeOut调整为2000,本地想测试下,结果。。。
java.lang.IllegalArgumentException: host parameter is null 调用接口报错
查了下 http://wang371134086.iteye.com/blog/1688458 竟然调用http接口没写http://,加上这段解决
问题解决记录下,感谢一下博客。
http://blog.csdn.net/xinying0424/article/details/36006383
http://wang371134086.iteye.com/blog/1688458
http://blog.sina.com.cn/s/blog_a577563c01013tlz.html
http://jinnianshilongnian.iteye.com/blog/2089792
http://www.zhihu.com/question/21647204
时间: 2024-11-08 10:01:22