tomcat CATALINA_BASE multi instance on windows

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本文介绍如何在同一台机器上配置多个Tomcat实例的方法，通过设置不同的CATALINA_BASE和CATALINA_HOME路径实现多实例共存，并确保各实例间端口不冲突。

CATALINA_HOME是Tomcat的安装目 录，CATALINA_BASE是Tomcat的工作目录。如果我们想要运行Tomcat的 多个实例，但是不想安装多个Tomcat软件副本。那么我们可以配置多个工作 目录，每个运行实例独占一个工作目录，但是共享同一个安装目录。

Having multiple Tomcat instances on your development machine is great. Here's how I usually do it for Windows (the important parts for setup are in steps 2, 3, 4 and 5):

Install a copy of Tomcat 6 to a directory (like C:\apache-tomcat-6.0.20).[/align]
Copy the conf directory to another directory (like C:\tomcat-1)
Under C:\tomcat-1, create a bin directory

In the C:\tomcat-1\bin directory, create a file called startup.bat that reads like this:

    set CATALINA_BASE=C:\tomcat-1

    set CATALINA_HOME=C:\apache-tomcat-6.0.20

    C:\apache-tomcat-6.0.20\bin\startup.bat

In the C:\tomcat-1\bin directory, create a file called shutdown.bat that reads like this:

    set CATALINA_BASE=C:\tomcat-1

    set CATALINA_HOME=C:\apache-tomcat-6.0.20

    C:\apache-tomcat-6.0.20\bin\shutdown.bat

OPTIONAL: create a file called setenv.bat in the C:\tomcat-1\bin directory to set any environment variables mentioned in C:\apache-tomcat-6.0.20\bin\catalina.bat. This is the place to set system properties, JPDA addresses, etc.
Create the logs, temp, webapps and work directories under C:\tomcat-1
From the C:\tomcat-1 directory, run bin\startup.bat
Repeat for your other installs from step 2 for as many tomcat instances as you need.

Try not to install Tomcat in a directory that has spaces in its name. It should work, but you'll experience fewer problems that way. I do not know how this would work if you were using the "tomcat as a service" option for Windows.

From here, you should be able to isolate tomcat instances. Just be sure to edit your conf\server.xml file so that the shutdown ports and HTTP connector ports don't interfere with other Tomcat instances that may be running. I usually assign values like 8005, 8006, 8007, etc. for the shutdown port and 8080, 8081, 8082, etc. for the HTTP connector port.