2.减少spring的配置文件:applicationContext-common.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xmlns:aop="http://www.springframework.org/schema/aop"     xmlns:tx="http://www.springframework.org/schema/tx"     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd" default-lazy-init="true">  <!--  <bean id="bean2" class="com.bjpowernode.spring.Bean2"><property name="bean3" ref="bean3"/><property name="bean4"><ref bean="bean4"/></property><property name="bean5" ref="bean5"/></bean><bean id="bean3" class="com.bjpowernode.spring.Bean3"><property name="id" value="100"/><property name="name" value="zhangsan"/><property name="sex" value="nan"/></bean><bean id="bean4" class="com.bjpowernode.spring.Bean4"><property name="id" value="100"/><property name="name" value="zhangsan"/><property name="sex" value="nan"/><property name="age"><value>90</value></property></bean> <bean id="bean5" class="com.bjpowernode.spring.Bean5"><property name="password" value="123"/></bean> -->  <bean id="bean2" class="com.bjpowernode.spring.Bean2"><property name="bean3" ref="bean3"/><property name="bean4"><ref bean="bean4"/></property><property name="bean5" ref="bean5"/></bean> <bean id="AbstractBean" abstract="true"><property name="id" value="100"/><property name="name" value="zhangsan"/><property name="sex" value="nan"/></bean><bean id="bean3" class="com.bjpowernode.spring.Bean3" parent="AbstractBean"/><bean id="bean4" class="com.bjpowernode.spring.Bean4" parent="AbstractBean"><property name="age"><value>90</value></property></bean><bean id="bean5" class="com.bjpowernode.spring.Bean5"><property name="password" value="123"/></bean></beans>