Spring abstract="true" merge="true"（原文）

原文出处：https://blog.csdn.net/xuezhan032200/article/details/9041417

abstract="true"

由于设置bean定义中设置了abstract="true",所以Spring容器就不对其进行初始化。

只是在此起了模板的作用，供其他bean继承，所以父bean的属性在类体中可以不定义，直接在bean的声明中以<proerty/>声明即可。

子bean继承他后需要在提供对应的属性和set方法即可，在子bean中就可获取从父bean继承来的值.

 

 

1.  
   <bean id="baseLocalTxProxy" abstract="true"
2.  
   class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
3.  
   <property name="transactionManager"
4.  
   ref="localTransactionManager" />
5.  
   <property name="transactionAttributes">
6.  
   <props>
7.  
   <prop key="add*">PROPAGATION_REQUIRED</prop>
8.  
   <prop key="set*">PROPAGATION_REQUIRED</prop>
9.  
   <prop key="new*">PROPAGATION_REQUIRED</prop>
10.  
    <prop key="save*">PROPAGATION_REQUIRED</prop>
11.  
    <prop key="remove*">PROPAGATION_REQUIRED</prop>
12.  
    <prop key="delete*">PROPAGATION_REQUIRED</prop>
13.  
    <prop key="update*">PROPAGATION_REQUIRED</prop>
14.  
    <prop key="merge*">PROPAGATION_REQUIRED</prop>
15.  
    <prop key="modify*">PROPAGATION_REQUIRED</prop>
16.  
    <prop key="submit">PROPAGATION_REQUIRED</prop>
17.  
    <prop key="list*">PROPAGATION_SUPPORTS,readOnly</prop>
18.  
    <prop key="query*">PROPAGATION_SUPPORTS,readOnly</prop>
19.  
    <prop key="search*">PROPAGATION_SUPPORTS,readOnly</prop>
20.  
    <prop key="load*">PROPAGATION_SUPPORTS,readOnly</prop>
21.  
    <prop key="find*">PROPAGATION_SUPPORTS,readOnly</prop>
22.  
    <prop key="get*">PROPAGATION_SUPPORTS,readOnly</prop>
23.  
    </props>
24.  
    </property>
25.  
    </bean>
26.  
     
27.  
    <bean id="shopPickerServiceImpl" parent="baseLocalTxProxy">
28.  
    <property name="target">
29.  
    <bean class="com.ibm.bpm.wle.module.maindata.biz.impl.ShopPickerServiceImpl"
30.  
    autowire="byName">
31.  
    <property name="shopPickerDao" ref="shopPickerDaoImpl"></property>
32.  
    </bean>
33.  
    </property>
34.  
    <property name="transactionAttributes">
35.  
    <props merge="true">
36.  
    <prop key="save*">PROPAGATION_SUPPORTS,readOnly</prop>
37.  
    <prop key="list*">readOnly</prop>
38.  
    </props>
39.  
    </property>
40.  
    </bean>

merge="true"

 

子bean中<prop key="save*">PROPAGATION_SUPPORTS,readOnly</prop>和父bean中的save*相同 那么

子bean会覆盖父bean 的save*.