zoukankan      html  css  js  c++  java
  • 一次线上http接口调用不通相关的解决过程

    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

  • 相关阅读:
    CTO干点啥?
    [转] 持续集成与持续交付备忘录
    [转]概率基础和R语言
    程序自信
    [转]Neural Networks, Manifolds, and Topology
    ubuntu14 + nginx + php
    [转]http://makefiletutorial.com/
    REDIS key notification
    GO RPC
    xpcall 安全调用
  • 原文地址:https://www.cnblogs.com/360buy-gazi/p/5525774.html
Copyright © 2011-2022 走看看