如何通过@ManagedProperty注释注入整个托管bean?

时间:2011-03-02 09:29:36

标签: java jsf dependency-injection jsf-2

我试图通过@ManagedProperty注释(非常类似于Possible to inject @ManagedBean as a @ManagedProperty into @WebServlet?将整个JSF托管bean注入另一个托管bean,但我注入了bean而不是servlet)。这就是我正在做的事情:

@ManagedBean
public class Foo {
  @ManagedProperty(value = "#{bar}")
  private Bar bar;
}

@ManagedBean
public class Bar {
}

不起作用(JSF 2.0 / Mojarra 2.0.3):

SEVERE: JSF will be unable to create managed bean foo when it is 
requested.  The following problems where found:
- Property bar for managed bean foo does not exist. Check that 
  appropriate getter and/or setter methods exist.

是否有可能或我需要通过FacesContext以编程方式进行此注入?

1 个答案:

答案 0 :(得分:31)

您需要添加setter和getter

@ManagedBean
public class Foo {
  @ManagedProperty(value = "#{bar}")
  private Bar bar;
  //add setters and getters for bar
  public Bar getBar(){
      return this.bar;
  }
  public void setBar(Bar bar){
      this.bar = bar;;
  }
}

FacesContext将解析并注入依赖关系时,它将使用setter注入,因此适当的setter / getter应该在那里。否则它将找不到属性