在一台电脑上同时启动两个tomcat

最近在学习cms快速建站系统，由于公司已经有一个在做的项目，自己又在研究cms的工作流程，所以需要启动两个tomcat。
（翻到最后直达结果）
首先我们要了解一下tomcat根目录下的 server.xml里面几个默认的端口号：
server port=”8005“：负责关闭tomcat服务
Connector port=”8080“:负责建立http连接
Connector port=”8009“：负责和其他的HTTP服务器建立连接
那下面就开始了 以tomcat6和tomcat7为示例：
首先我们把两个tomcat部署到myeclipse上面，先跑起一个

这时候再启动tomcat6报错如下：
8080端口被占用：

Failed to start connector [Connector[HTTP/1.1-8080]]LifecycleException:  service.getName(): "Catalina";  Protocol handler start failed: java.lang.IllegalStateException: Unable to initialise endpoint. A previous call to init() failed. See previous log messages for details.    at org.apache.catalina.connector.Connector.start(Connector.java:1227)    at org.apache.catalina.core.StandardService.start(StandardService.java:540)    at org.apache.catalina.core.StandardServer.start(StandardServer.java:759)    at org.apache.catalina.startup.Catalina.start(Catalina.java:595)    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:606)    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)十一月 11, 2016 6:01:38 下午 org.apache.coyote.ajp.AjpAprProtocol start

8009端口被占用：

Failed to start connector [Connector[AJP/1.3-8009]]LifecycleException:  service.getName(): "Catalina";  Protocol handler start failed: java.lang.IllegalStateException: Unable to initialise endpoint. A previous call to init() failed. See previous log messages for details.    at org.apache.catalina.connector.Connector.start(Connector.java:1227)    at org.apache.catalina.core.StandardService.start(StandardService.java:540)    at org.apache.catalina.core.StandardServer.start(StandardServer.java:759)    at org.apache.catalina.startup.Catalina.start(Catalina.java:595)    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:606)    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)十一月 11, 2016 6:01:38 下午 org.apache.catalina.startup.Catalina start信息: Server startup in 942 ms十一月 11, 2016 6:01:38 下午 org.apache.catalina.core.StandardServer await

8005端口被占用：

严重: StandardServer.await: create[8005]: java.net.BindException: Address already in use: JVM_Bind    at java.net.DualStackPlainSocketImpl.bind0(Native Method)    at java.net.DualStackPlainSocketImpl.socketBind(DualStackPlainSocketImpl.java:106)    at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376)    at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:190)    at java.net.ServerSocket.bind(ServerSocket.java:376)    at java.net.ServerSocket.<init>(ServerSocket.java:237)    at org.apache.catalina.core.StandardServer.await(StandardServer.java:404)    at org.apache.catalina.startup.Catalina.await(Catalina.java:676)    at org.apache.catalina.startup.Catalina.start(Catalina.java:628)    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:606)    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)十一月 11, 2016 6:01:38 下午 org.apache.coyote.http11.Http11AprProtocol pause

这个时候我们没有修改任何配置文件，两个tomcat都是默认的端口，三个端口都是一样的，所以控制台报了三个信息。
接下来我们修改tomcat6配置文件conf文件夹下面的server.xml文件，将8080端口改为8089，报错如下：

严重: Failed to start connector [Connector[AJP/1.3-8009]]LifecycleException:  service.getName(): "Catalina";  Protocol handler start failed: java.lang.IllegalStateException: Unable to initialise endpoint. A previous call to init() failed. See previous log messages for details.    at org.apache.catalina.connector.Connector.start(Connector.java:1227)    at org.apache.catalina.core.StandardService.start(StandardService.java:540)    at org.apache.catalina.core.StandardServer.start(StandardServer.java:759)    at org.apache.catalina.startup.Catalina.start(Catalina.java:595)    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:606)    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)十一月 11, 2016 6:25:59 下午 org.apache.catalina.startup.Catalina start信息: Server startup in 998 ms十一月 11, 2016 6:25:59 下午 org.apache.catalina.core.StandardServer await严重: StandardServer.await: create[8005]: java.net.BindException: Address already in use: JVM_Bind    at java.net.DualStackPlainSocketImpl.bind0(Native Method)    at java.net.DualStackPlainSocketImpl.socketBind(DualStackPlainSocketImpl.java:106)    at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376)    at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:190)    at java.net.ServerSocket.bind(ServerSocket.java:376)    at java.net.ServerSocket.<init>(ServerSocket.java:237)    at org.apache.catalina.core.StandardServer.await(StandardServer.java:404)    at org.apache.catalina.startup.Catalina.await(Catalina.java:676)    at org.apache.catalina.startup.Catalina.start(Catalina.java:628)    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:606)    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)

现在我们将其余两个端口8009改为9009，8005改为9005，再次启动tomcat，服务正常启动。期间我试过几次每次改一个端口发现
仅仅修改8080端口和8005端口服务可以启动，但是还是会报错，而仅仅修改8080端口和8009端口则不行，具体原因还在学习中。。。。。

总结：在一台电脑上同时启动两个tomcat服务器只需要将tomcat根目录中的conf中的server.xml文件修改其中的8080，8005，8009三个默认端口号
改成不被其他进程占用的端口即可

以上是菜鸟学习结果，如有不对的地方望大神指出改正，感激不尽。