OGNL Hello World in Java

Question

I need to use OGNL for reading some properties from Java object. OGNL is completely new thing to me. The documentation available for OGNL is OGNL's website is really confusing to me.

So anyone can provide a simple HelloWorld example for using OGNL (or any link to a tutorial is also helpful).

Answer 1

Try this:

    Dimension d = new Dimension(2,2);

    String expressionString = "width";
    Object expr = Ognl.parseExpression(expressionString);

    OgnlContext ctx = new OgnlContext();
    Object value = Ognl.getValue(expr, ctx, d);

    System.out.println("Value: " + value);