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javax.servlet.ServletException: PWC1232: Exceeded maximum depth for nested request dispatches: 20

Answer 1

A:

This means that recursive internal forwards occur. A few things to observe:

make sure you are accessing the page via the right suffix. i.e. http://localhost:8080/app/p1.jsp, and not p1.page - you have mapped the jsf suffix to be .jsp
check your navigation rules in your faces-config.xml

make sure you have the following context-param defined:

<context-param>
    <param-name>javax.faces.DEFAULT_SUFFIX</param-name>
    <param-value>.jsp</param-value>
</context-param>

To summarize - the javax.faces.DEFAULT_SUFFIX determines the file extension under which the page are sought, and the <url-pattern> of the faces-servlet determines the way the jsf pages are accessed by clients (browsers)

Bozho 2010-01-02 18:58:55

I am accessing page via address http://localhost:18080/web1/p1.jsp. If I change page file name to p1.jsf and URL pattern to <url-pattern>*.jsf</url-pattern> I still got the same problem. I have added faces-config.xml to the abowe question.

Rafal 2010-01-02 19:20:33

but is your file named p1.page ? If so, rename it to .jsp

Bozho 2010-01-02 19:35:41

No, file is was named p1.jsp. In post a have made mistake, sorry.

Rafal 2010-01-02 21:23:35

then define the context-param as mentioned in my updated answer

Bozho 2010-01-02 21:26:36

To sum up, I have (1) changed web page file name to p1.jsf, (2) changed in web.xml file URL patter *<url-pattern>*.jsf</url-pattern>* and (3) added to web.xml file *<context-param><param-name>javax.faces.DEFAULT_SUFFIX</param-name><param-value>.jsf</param-value></context-param>*. I have no navigation rules defined in faces-config.xml.Unfortunately, I still got the same error... **Exceeded maximum depth for nested request dispatches.**

Rafal 2010-01-02 21:34:42

In previous comment point 2 should look like this (formatting issue): changed in web.xml file URL patter to <url-pattern>*.jsf</url-pattern>

Rafal 2010-01-02 21:41:29

param-value shouldn't be 'jsf'..

Bozho 2010-01-02 22:33:37

OK, now works! Thanks!

Rafal 2010-01-03 08:46:32

Answer 2

A:

FacesServlet should be mapped on an url-pattern of *.jsf (or anything else other than *.jsp).
No javax.faces.DEFAULT_SUFFIX is needed in web.xml if you already use JSP. The JSP page itself must actually be named pagename.jsp (and thus not pagename.jsf, this is the root cause of the recursive forward calls).
Open the page in the webbrowser using the *.jsf suffix: http://example.com/context/pagename.jsf (and thus not by pagename.jsp, else you would get RuntimeException: FacesContext not found).

BalusC 2010-01-02 22:17:11

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