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javajakarta-eecontext-param

Context Parameters value not string

Let's say you write a Deployment Descriptor with some context parameters and you want one of them to be an object,unfortunatelly I read that you cand only add string values to the tag.

Is there a way to do this?I understood an example when it came to a database because you can put the look-up name.

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   ....>
 <context-param>
   <param-name>foo</param-name>
   <param-value>new foo()</param-value>
 <servlet>
  <servlet-name>BeerParamTests</servlet-name>
  <servlet-class>TestInitParams</servlet-class>
  <init-param>
   <param-name>adminEmail</param-name>
   <param-value> likewecare@wikewdfs</param-value>
  </init-param>
 </servlet>
<servlet-mapping>
 <servlet-name>BeerParamTests</servlet-name>
 <url-pattern>/Tester.do</url-pattern>
</servlet-mapping>

Solution

  • <context-param> <param-name>foo</param-name> <param-value>com.edu.Foo</param-value> </context-param>

    In you java code, try the below

    Class.forName(getServletContext().getInitParameter("foo")).newInstance();

    but you will get only the empty object without any values assigned to the properties. will it work for you?