Spring配置文件注入变量为null解决方案

   <bean id="targetCommentsAutoReplyBiz" class="com.yododo.biz.micro.autoReply.impl.TargetCommentsAutoReplyBizImpl">
      <property name="autoreplyContentReplaceMap">
         <map>
           <entry key="areaname">
             <bean class="com.yododo.biz.micro.autoReplyMode.impl.AreaNameReplaceBizImpl"></bean>
           </entry>
         </map>
       </property>
   </bean>
   
   <bean id="autoreplyLogBiz" class="com.yododo.biz.micro.impl.AutoreplyLogBizImpl">
      <property name="autoReplyMap">
         <map>
           <entry key="targetComments">
             <ref bean="targetCommentsAutoReplyBiz"/>
             <bean class="com.yododo.biz.micro.autoReply.impl.TargetCommentsAutoReplyBizImpl"></bean>
           </entry>
         </map>
       </property>
   </bean>

 原来代码如上，如此注入，在com.yododo.biz.micro.impl.AutoreplyLogBizImpl 的autoReplyMap中TargetCommentsAutoReplyBizImpl的autoreplyContentReplaceMap是为null的。

分析原因：在为autoreplyLogBiz注入autoReplyMap初始化autoReplyMap的时候，TargetCommentsAutoReplyBizImpl对象并没有从spring容器中获取，而是重新new一个对象，当然没有重新new TargetCommentsAutoReplyBizImpl中的autoreplyContentReplaceMap，所以。。。。

解决方法，如下配置：

   <bean id="targetCommentsAutoReplyBiz" class="com.yododo.biz.micro.autoReply.impl.TargetCommentsAutoReplyBizImpl">
      <property name="autoreplyContentReplaceMap">
         <map>
           <entry key="areaname">
             <bean class="com.yododo.biz.micro.autoReplyMode.impl.AreaNameReplaceBizImpl"></bean>
           </entry>
         </map>
       </property>
   </bean>
   
   <bean id="autoreplyLogBiz" class="com.yododo.biz.micro.impl.AutoreplyLogBizImpl">
      <property name="autoReplyMap">
         <map>
           <entry key="targetComments">
             <ref bean="targetCommentsAutoReplyBiz"/>
           </entry>
         </map>
       </property>
   </bean>