Should you set up database connection properties in server.xml or context.xml

Question

I am trying to set up the database connection properties using JNDI for a Spring web application.

I am considering two approaches as below:

Approach

Answer 1

step 1: context.xml

Step 2 : web.xml

        DB Connection
        refname
        javax.sql.DataSource
        Container
    

Step 3 : create a class to get connection

Connection connection = null;        
            Context context = (Context) new InitialContext().lookup("java:comp/env");
            DataSource ds = (DataSource) context.lookup("refname");
            connection = ds.getConnection();

Everything is set