JSP tags not working

[snjv180]

I think the jsp tags are not working in my application. I think so because <c:if > tags and <c:foreach> tags don't seem to work in my jsf application. I have given the namespace and all. Do I have to change anything in web.xml or anything else. It would be great if anyone can suggest a fix. Thank you.

[jhuska]

Hi Sanjeev,

are you sure that you are using h:head and h:body tags in your facelets (the h prefix is important)?

[snjv180]

Yes,

I have added the <h:head> tags . I think it is due to the difference in scopes or jstl and jsf. I think I am gonna try an example tomorrow and see if that works. Thank you for the reply!!!

[mcmurdosound]

Are you using jsf 1.2 with facelets or jsf with jsp?

if you are using facelets, you can use the jstl tags (like c:if or c:forEach) but be aware, that they will change the component tree while rendering the response (buildView before renderView) and that the usage can cause strange sideeffects:

- the "var" attribute of a a4j:repeat for example is not available during the c:if test evaluation

- the condition for c:if test is evaluated on every request. So if there is too much or expensive logic, this could cause performance issues. Especially if you are firing queries to your database.

- c:forEach may create lots and lots of UIComponents in the component tree.

[snjv180]

Hello,

     I'm working with JSF 2.0. Thank you for the very very helpful explanation. Can I have a guide for how to use them together in harmony with each other. Could you provide me a link. Anyways this was the answer I was looking for. This solved th issues I was having

http://stackoverflow.com/questions/7593603/jstl-xmlns-namespace-differences-between-jsf-1-2-and-jsf-2-x