Websphere Web应用程序的可选JNDI绑定

Question

I would like to have optionally supplied information available to my webapp when deployed to Websphere (we are using 8.5) via the application's JNDI context.

I know that I can put a resource-ref or resource-env-ref in my web.xml but when I do that WAS will require me to supply a binding for it and deployment time.

My application will look in JNDI for certain values and adjust its behavior if found, but will function fine with default behaviour if it does not find values in JNDI. How, in WAS, do I supply a binding (just for a string or a URL) for my webapp without declaring a dependency on it in a resource-ref or resource-env-ref in my web.xml.

I know how to do this in Tomcat, I just put a Environment entry in the context.xml, like this:

<Environment 
    name="com.myorg.config" 
    value="http://localhost:8081/suff"
    type="java.lang.String"/>

Answer 1

You can use an @Resource String lookupName; to accomplish the same in a portable manner. You will be prompted for a value at deployment time, but you can specify nothing, which will cause no value to be injected.