启动两个tomcat实例的方法

启动两个tomcat报错

为了开发方便，可能会前台和后台各跑一个Tomcat，但是会发现程序启动一般，然后报如下错（logs下日志可查看）：

15-Mar-2017 11:13:40.889 严重 [main] org.apache.catalina.core.StandardService.initInternal Failed to initialize connector [Connector[AJP/1.3-8009]]
 org.apache.catalina.LifecycleException: Failed to initialize component [Connector[AJP/1.3-8009]]
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:112)
    at org.apache.catalina.core.StandardService.initInternal(StandardService.java:549)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:107)
    at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:875)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:107)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:606)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:629)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:311)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:494)
Caused by: org.apache.catalina.LifecycleException: Protocol handler initialization failed
    at org.apache.catalina.connector.Connector.initInternal(Connector.java:970)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:107)
    ... 12 more
Caused by: java.net.BindException: Address already in use: bind
    at sun.nio.ch.Net.bind0(Native Method)
    at sun.nio.ch.Net.bind(Net.java:344)
    at sun.nio.ch.Net.bind(Net.java:336)
    at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:199)
    at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
    at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:210)
    at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:972)
    at org.apache.tomcat.util.net.AbstractJsseEndpoint.init(AbstractJsseEndpoint.java:244)
    at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:558)
    at org.apache.catalina.connector.Connector.initInternal(Connector.java:968)
    ... 13 more

和如下错：

15-Mar-2017 11:13:41.965 严重 [main] org.apache.catalina.core.StandardServer.await StandardServer.await: create[localhost:8005]: 
 java.net.BindException: Address already in use: JVM_Bind
    at java.net.DualStackPlainSocketImpl.bind0(Native Method)
    at java.net.DualStackPlainSocketImpl.socketBind(DualStackPlainSocketImpl.java:96)
    at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:374)
    at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:175)
    at java.net.ServerSock
    et.bind(ServerSocket.java:376)
    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:743)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:689)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:355)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:495)

解决办法

出现这种问题，想到的解决办法当然是到conf文件夹下找到server.xml更改端口号，只是这次更改，不仅要修改（本人默认端口号已改为8081）：

<Connector
              
               />

并且修改如下两个端口，一个在以上端口的上方，一个在下方（其中的端口号都是自己改过的）

<Server>
  <Listener />
  <!-- Security listener. Documentation at /docs/config/listeners.html
  <Listener />

<Connector />

意思该文档里的三个端口号都更改。