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Output Link and Command link problem

I have this command link that I want to redirect to a certain url, a complete one with the Http://www.webpage.com.. and its value is Goto This Page..

lets say I want it to pass through a certain backing bean before redirecting how am i supposed to do it...?

before it was this simple:

<h:outputLink value="http://www.wepbage.com">

<h:outputText value="Go to this page"/>

</h:outputLink>

but this could says that the action attribute is not valid for an outputLink..

thanks in advance.. :)

[597 byte] By [Arch_Bytesa] at [2007-11-27 11:01:44]

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# 1

JSF<h:commandLink value="Go to this page" action="#{myBean.link}" />

MyBeanpublic void link() {

HttpServletResponse response = (HttpServletResponse) FacesContext.getCurrentInstance().getExternalContext().getResponse();

response.sendRedirect("http://www.webpage.com");

}

BalusCa at 2007-7-29 12:38:46 >

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# 2

But how about if I want it to do something before passing through that link? lets say a different backing bean..?

Do I have to add an action listener to it?

Arch_Bytesa at 2007-7-29 12:38:46 >

# 3

Uhm, just extend the link() method with desired logic?

This was just a basic example.

BalusCa at 2007-7-29 12:38:46 >

# 4

Cannot forward after response has been committed--

this is what I got when I extended the desired logic into the redirect.. i placed a method before the redirect..

Arch_Bytesa at 2007-7-29 12:38:46 >

# 5

You cannot send multiple responses at once.

Are you returning a navigation case String afterwards?

BalusCa at 2007-7-29 12:38:46 >

# 6

oh.. ok.. but I need to do something before it should redirect. I am simply supposed to set a boolean value into true but then as you said I can't do that.. I am not returning navigation strings...

is there another way around this..?

Arch_Bytesa at 2007-7-29 12:38:46 >

# 7

This is just possible. public void link() {

someBooleanValue = true;

response.sendRedirect("foo");

}

Look to the stacktrace what's the cause of the IllegalStateException.

BalusCa at 2007-7-29 12:38:46 >

# 8

Here's the stack trace but i can't seem to find which particular thing is causing this..

16:30:33,921 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet

threw exception

java.lang.IllegalStateException: Cannot forward after response has been committe

at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationD

ispatcher.java:313)

at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDis

patcher.java:301)

at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatc

h(ServletExternalContextImpl.java:415)

at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspV

iewHandlerImpl.java:234)

at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:

352)

at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl

icationFilterChain.java:252)