tomcat 日志文件分类今天开发一个AOP接口需求协议，在

今天开发一个AOP接口需求协议，在Linux上启动tomcat应用的时候，日志打印出如下错误：

java.lang.IllegalStateException: failed to create a child event loop
    at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:68)
    at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:49)
    at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:61)
    at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:52)
    at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:44)
    at com.hollycrm.hollyuniproxy.server.socket.nio.NettyServer.<init>(NettyServer.java:28)
    at com.hollycrm.hollyuniproxy.server.http.SocketServerConfigListener.contextInitialized(SocketServerConfigListener.java:44)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5003)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5517)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
    at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1263)
    at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1978)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
Caused by: io.netty.channel.ChannelException: failed to open a new selector
    at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:128)
    at io.netty.channel.nio.NioEventLoop.<init>(NioEventLoop.java:120)
    at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:87)
    at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:64)
    ... 19 more
Caused by: java.io.IOException: 打开的文件过多
    at sun.nio.ch.IOUtil.makePipe(Native Method)
    at sun.nio.ch.EPollSelectorImpl.<init>(EPollSelectorImpl.java:65)
    at sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:36)
    at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:126)
    ... 22 more

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