在@ManagedBean中使用@Interceptor

时间:2012-06-28 08:38:03

标签: jsf-2 cdi interceptor managed-bean view-scope

CDI拦截在@Named中完美运行,但在@ManagedBean中没有:

Logable.java

@InterceptorBinding
@Retention(RUNTIME)
@Target({TYPE, METHOD})
public @interface Logable {

}

LoggingInterceptor.java

@Logable
@Interceptor
public class LoggingInterceptor {
@AroundInvoke
    public Object log(InvocationContext ctx) throws Exception {
//log smth. with ctx.
}
}

WorkingBean.java

@Named
@Logable
public class WorkingBean implements Serializable {
 //works : methods will be logged
}

的beans.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
  <beans xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
    http://java.sun.com/xml/ns/javaee/beans_1_0.xsd">

<interceptors>
 <class>LoggingInterceptor</class>
</interceptors>

</beans>

ViewScopedBean.java

@Logable
@ManagedBean
public class ViewScopedBean implements Serializable {
 //doesn't work
}

我知道,这种拦截器适用于WebBeans(和EJB), 但我正在寻找具有相同拦截器概念的两个世界(描述+ JSF)的解决方案 我需要@ViewScoped @ManagedBean,这就是为什么我不能摆脱@ManagedBean而转而使用纯WebBeans

系统: Mojarra 2.1.7 Primefaces 3.2

2 个答案:

答案 0 :(得分:1)

据我所知,没有一个。 JSF没有任何支持拦截的东西。

答案 1 :(得分:1)

JSF不像你自己发布的那样支持CDI拦截。 CDI拦截器适用于@PostConstruct

等生命周期方法
    @Inherited
    @InterceptorBinding
    @Retention(RUNTIME)
    @Target({TYPE})
    public @interface TypeLogger {

      @Nonbinding
      public LoggingLevel logLevel() default LoggingLevel.INFO;
    }

以下是它的使用方法,因为它只绑定到@Target({TYPE})

    @ManagedBean
    @ViewScoped
    @TypeLogger
    public class Index implements Serializable {

       private static final long serialVersionUID = 3336392241545517919L;

       @PostConstruct
       private void init() {
         setup();
       }
    }