jsf-2 - 如何将值注入 bean 的子属性（没有注释）？

Question

我想问你是否可以将值注入到 bean 的子属性中。

这是我想做的，但 Eclipse IDE 抱怨：

在父类 paq.paq.BeanA 上找不到 Bean 属性 beanB.subprop

<managed-bean>
    <managed-bean-name>beanA</managed-bean-name>
    <managed-bean-class>paq.paq.BeanA</managed-bean-class>
    <managed-bean-scope>session</managed-bean-scope>
        <managed-property>
            <property-name>beanB.subprop</property-name>
            <value>Hello!</value>
        </managed-property>        
</managed-bean>



public class BeanA implements Serializable {

    public BeanB beanB = null;      

    public Skin getBeanB() {
        if (this.beanB == null) {
            this.beanB = new BeanB();
        }
        return this.beanB;
    }       

    public void setBeanB(BeanB beanB) {     
        this.beanB = beanB;
    }

}


public class BeanB implements Serializable {

    public String subprop = null;       

    public String getSubprop() {
        return this.subprop;
    }       

    public void setSubprop(String subprop) {        
        this.subprop = subprop;
    }

}   

谢谢！

Answer 1

每个嵌套 bean 也需要声明为托管 bean。您需要将其注入嵌套 bean，然后将嵌套 bean 本身注入主 bean。

<managed-bean>
    <managed-bean-name>beanA</managed-bean-name>
    <managed-bean-class>paq.paq.BeanA</managed-bean-class>
    <managed-bean-scope>session</managed-bean-scope>
    <managed-property>
        <property-name>beanB</property-name>
        <value>#{beanB}</value>
    </managed-property>        
</managed-bean>
<managed-bean>
    <managed-bean-name>beanB</managed-bean-name>
    <managed-bean-class>paq.paq.BeanB</managed-bean-class>
    <managed-bean-scope>session</managed-bean-scope>
    <managed-property>
        <property-name>subprop</property-name>
        <value>Hello!</value>
    </managed-property>        
</managed-bean>