Eclipse Tomcat - 上下文环境变量
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Eclipse Tomcat - Context environment variable
提问by saravana_pc
I use eclipse + tomcat + maven.
我使用 eclipse + tomcat + maven。
When I deploy my project to Tomcat, the following entry gets added to the server.xml of the tomcat configuration:
当我将项目部署到 Tomcat 时，以下条目将添加到 tomcat 配置的 server.xml 中：
<Context docBase="C:\ws_eclipse\ws\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps\MyApp" path="/myApp" reloadable="true" source="org.eclipse.jst.jee.server:MyApp"/>
What I actually want is to add an environment variable so that the context looks like this:
我真正想要的是添加一个环境变量，以便上下文如下所示：
<Context docBase="C:\ws_eclipse\ws\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps\MyApp" path="/myApp" reloadable="true" source="org.eclipse.jst.jee.server:MyApp">
<Environment name="config.file" type="java.lang.String" value="C:/test/config.xml" />
</Context>
I tried adding it as an environment variable in eclipse run configuration, but when I deployed the application on tomcat, the context does not include the environment variable.
我尝试在 eclipse 运行配置中将其添加为环境变量，但是当我在 tomcat 上部署应用程序时，上下文不包含环境变量。
回答by MartinK
You could add a context.xmlfile in the META-INFdirectory of your webapp. The content of this file may look like:
您可以在web 应用程序的META-INF目录中添加一个context.xml文件。该文件的内容可能如下所示：
<Context>
<Parameter name="config.file" value="C:/test/config.xml"/>
</Context>
This has the same effect as defining a <context-param/>in your web.xml. Use ServletContext.getInitParameter("config.file")to retrieve it's value as a String.
这与<context-param/>在 web.xml 中定义 a 的效果相同。用于ServletContext.getInitParameter("config.file")以字符串形式检索它的值。
You may use Environmentas well, but it's probably overkill (You just need a String anyway, I think).
你也可以使用Environment，但它可能有点矫枉过正（我认为你只需要一个字符串）。
See http://tomcat.apache.org/tomcat-6.0-doc/config/context.html
见http://tomcat.apache.org/tomcat-6.0-doc/config/context.html
回答by Tejas C
Setting it in application launch configuration is the best way, you might want to verify what you did at here - Creating a Java application launch configuration
在应用程序启动配置中设置它是最好的方法，您可能想验证您在此处所做的操作 -创建 Java 应用程序启动配置
HTH
HTH
