如何从context.xml资源获取URL

Question

I am using a JNDI DataSouce with Tomcat.

my context.xml for java web app has a resource ta that looks like this :

<Resource
        name="jdbc/dbv1RW" type="javax.sql.DataSource"
        maxActive="100" maxIdle="30" maxWait="10000" 
        url="jdbc:mysql://localhost:3306/dbv1"
        driverClassName="com.mysql.jdbc.Driver"
        username="root" password="root"
 />

And I fetch the data source in my java class like this :

Context initCtx = new InitialContext();
Context envCtx = (Context) initCtx.lookup("java:comp/env");
dataSource = (DataSource) envCtx.lookup("jdbc/dbv1RW");

How can I get the URL of the data source without establishing the connetion with the data source(ie without calling the get connection method) ?

Answer 1

You have to printout what is the real implementation of the returned data source. If the implementation exposes the parameters then you can cast it to its real type and access them. It will be implementation (server) specific.