解决 java.net.BindException: Address already in use (Bind failed)

这是因为tomcat未正确关闭导致的端口占用问题

找到报错中被占用的端口kill掉进程即可，一般是8080，也有下面这种8005的

11-Mar-2019 14:46:12.405 SEVERE [main] org.apache.catalina.core.StandardServer.await StandardServer.await: create[localhost:8005]: 
 java.net.BindException: Address already in use (Bind failed)
    at java.net.PlainSocketImpl.socketBind(Native Method)
    at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:387)
    at java.net.ServerSocket.bind(ServerSocket.java:375)
    at java.net.ServerSocket.<init>(ServerSocket.java:237)
    at org.apache.catalina.core.StandardServer.await(StandardServer.java:440)
    at org.apache.catalina.startup.Catalina.await(Catalina.java:775)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:721)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:353)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:493)

像下面这样筛选出来，然后kill掉进程号就行，比如 kill 10701

[root@localhost ~]# netstat -nltp | grep 8005
tcp6       0      0 127.0.0.1:8005          :::*                    LISTEN      10701/java          
[root@localhost ~]# netstat -nltp | grep 8080
tcp6       0      0 :::8080                 :::*                    LISTEN      10701/java