f:param does not work with p:commandLink or h:commandLink on query string
f:param works great with h:link, but not with p:commandLink or h:commandLink.
For example, I have two pages test_first.xhtml and test_second.xhtml, and
a backing java bean TestBean.java.
I start running test_first.xhtml.
If I click link1, which is a h:link, the page will redirect to
test_second.xhtml. With the help of f:param, the address bar of the
browser will show .../test_second.xhtml?id=1. On that page,
testBean.userId gets printed.
If I click link2 or link3, the page redirects to test_second.xhtml.
However, the address bar only shows .../test_second.xhtml, there is NO
?id=#! And testBean.userId does not get printed on that page.
How can I make commandLink work with f:param? Sometimes I want the link
not to redirect to another page but to call some methods of bean depending
on the data.
test_first.xhtml:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui">
<h:head/>
<h:body>
<h:form>
<h:link value="link1" outcome="test_second" >
<f:param name="id" value="1"/>
</h:link>
<br/><br/>
<h:commandLink value="link2" action="test_second?faces-redirect=true" >
<f:param name="id" value="2" />
</h:commandLink>
<br/><br/>
<p:commandLink value="link3" action="test_second?faces-redirect=true">
<f:param name="id" value="3" />
</p:commandLink>
<br/><br/>
</h:form>
</h:body>
</html>
test_second.xhtml:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui">
<f:metadata>
<f:viewParam name="id" value="#{testBean.userId}" />
</f:metadata>
<h:head/>
<h:body>
<h:form>
This is the second page.
<h:outputText value="Selected id is #{testBean.userId}" />
<h:commandButton value="Print page id" action="#{testBean.print()}" />
</h:form>
</h:body>
</html>
TestBean.java
@ManagedBean
@SessionScoped
public class TestBean implements Serializable{
private Integer userId;
public void print() {
System.out.println(userId);
}
public Integer getUserId() {
return userId;
}
public void setUserId(Integer userId) {
this.userId = userId;
}
}
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