您可以在jetty-env.xml中为Web应用程序上下文设置init参数吗？

Question

I am using the maven eclipse plugin for jetty.

Is it possible to set the following init param through the jetty-env.xml using the <set> tag?

<init-param>
   <param-name>useFileMappedBuffer</param-name>
   <param-value>false</param-value>
 </init-param>

I don't want to create my own web app context(webdefault.xml)

Answer 1

Found a solution. You can use the <Call> tag to invoke the setInitParameter method of the WebAppContext to set init parameters. For this tag you set the name attribute to the method you are calling and the first arg is the param name the second arg is the param value.

<Call name="setInitParameter">
    <Arg>org.eclipse.jetty.servlet.Default.useFileMappedBuffer</Arg>
    <Arg>false</Arg>
</Call>

Answer 2

No, as that's a init-param configuration for the DefaultServlet , which is defined as a defaultDescriptor in the WebAppContext .

By the time the jetty-env.xml has been loaded and is being processed, the WebAppContext instance exists, and the defaultDescriptor has already been loaded and initialized.

The only place you can specify that particular init-param is in a custom defaultDescriptor that you reference in your XML deployable for your webapp.

Note: jetty-env.xml exists to define various JDNI environment bound objects, its not designed for anything else really.