注入托管bean会导致null

Question

我正在尝试在两个jsf页面之间传递变量。我已经搜索并尝试了一些来自互联网的解决方案，但我被卡住了。

在我的first_config.xml中有一个像这样的bean：

    <managed-bean>
        <managed-bean-name>configBean</managed-bean-name>
        <managed-bean-class>
            mypackage.ConfigBean
        </managed-bean-class>
        <managed-bean-scope>request</managed-bean-scope>
        <managed-property>
            <property-name>domainName</property-name>
            <value>Config</value>
        </managed-property>
        <managed-property>
            <property-name>configService</property-name>
            <value>#{configService}</value>
        </managed-property>
    </managed-bean>

在second_config.xml中，我注入了那个bean：

     <managed-bean>
            <managed-bean-name>accountSelfBean2</managed-bean-name>
            <managed-bean-class>mypackage.AccountSelfBean</managed-bean-class>
            <managed-bean-scope>request</managed-bean-scope>
            <managed-property>
              <property-name>domainName</property-name>
              <value>AccountSelf</value>
            </managed-property>  
            <managed-property>
              <property-name>configBean</property-name>
              <value>#{configBean}</value>
            </managed-property>
     </managed-bean>

在AccountSelfBean.java类中，我已经有了get / set方法：

private ConfigBean configBean;

    public ConfigBean getConfigBean() {
        return configBean;
    }

    public void setConfigBean(ConfigBean configBean) {
        this.configBean = configBean;
    }

但是，当我尝试调试时，我发现我的configBean是null。