To Specify Filter Mappings Using NetBeans IDE

1. Expand the application’s project node in the Project pane.

2. Expand the Web Pages and WEB-INF nodes under the project node.

3. Double-click web.xml.

4. Click Filters at the top of the editor pane.

5. Expand the Servlet Filters node in the editor pane.

6. Click Add Filter Element to map the filter to a web resource by name or by URL pattern.

7. In the Add Servlet Filter dialog, enter the name of the filter in the Filter Name field.

8. Click Browse to locate the servlet class to which the filter applies.

   You can include wildcard characters so that you can apply the filter to more than one servlet.

9. Click OK.

10. To constrain how the filter is applied to requests, follow these steps.

    1. Expand the Filter Mappings node.

    2. Select the filter from the list of filters.

    3. Click Add.

    4. In the Add Filter Mapping dialog, select one of the following dispatcher types:

       • REQUEST: Only when the request comes directly from the client

       • ASYNC: Only when the asynchronous request comes from the client

       • FORWARD: Only when the request has been forwarded to a component (see Transferring Control to Another Web Component)

       • INCLUDE: Only when the request is being processed by a component that has been included (see Including Other Resources in the Response)

       • ERROR: Only when the request is being processed with the error page mechanism (see Handling Servlet Errors)

       You can direct the filter to be applied to any combination of the preceding situations by selecting multiple dispatcher types. If no types are specified, the default option is REQUEST.