JSF 2.2 Compatible mode
For those not ready for new CDI activation, JSF 2.3 provides a compatible mode to make your codes working seamlessly with a JSF 2.2 faces-config.xml.In contrast with the former JSF 2.3 configration, we should perform some modificaiton here.
-
Use a 2.2 versioned faces-config.xml instead.
<?xml version='1.0' encoding='UTF-8'?> <faces-config xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-facesconfig_2_2.xsd" version="2.2"> </faces-config>
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Declare a beans.xml, CDI is enabled by default in Java EE 7, so it is optional.
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/beans_2_0.xsd" bean-discovery-mode="all" version="2.0"> </beans>
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Add 3.1 versioned web.xml. It is optional, but the compatible mode only works with 3.1, does not work with a 4.0 versioned web.xml.
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1"> </web-app>
-
Remove the
@FacesConfigannotated class, it is only for JSF 2.3.
Now create a simple sample to try it.
Firstly create a simple backing bean.
@Named
@RequestScoped
public class HelloBean {
private String message;
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public void sayHi() {
this.message = "Greeting at " + LocalDateTime.now();
}
@Override
public int hashCode() {
int hash = 7;
hash = 13 * hash + Objects.hashCode(this.message);
return hash;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final HelloBean other = (HelloBean) obj;
if (!Objects.equals(this.message, other.message)) {
return false;
}
return true;
}
}
<!DOCTYPE html>
<html lang="en"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:jsf="http://xmlns.jcp.org/jsf">
<h:head/>
<h:messages />
<body>
<p>
Hello JSF 2.3(JSF 2.2 Compatible Mode)
</p>
<form jsf:id="form">
<p>
<strong>Say Hi to JSF 2.3: </strong>
<div>#{helloBean.message}</div>
</p>
<p>
<input type="submit" value="Login" jsf:action="#{helloBean.sayHi()}" />
</p>
</form>
</body>
</html>
Get the source codes from my github account.
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