Can any one please guide me that how can we render the custom web page view in the portlet?
For example, I have a input text box in my where user can enter the target URL and on click of the submit button the portlet content should display the target URL page.
I don't want to use the existing core portlet (IFrame). I need to design my own with some business logic.
Any guidelines or suggestions on how to render a webpage in the portlet?
This sounds like a question on how to build a basic portlet. Please check a tutorial (step-by-step).
If this is not your question, please specify further - your question is way too broad to assume that you have a specific (other) problem.