Java SpringWeb-关于启用AspectJ&；的循环参考；事务管理

在以下条件下，弹簧腹板会产生循环参考

启用AspectJ AutoProxy和事务管理

创建一个简单的bean，B1应该首先加载

创建依赖于B1的ProxyFactoryBean B2

下面是我的分析

Spring试图创建Bean B1。在这一点上,， 注释：反转录酶抑制剂BPP生效

AutoProxyCreator打算创建TransactionAdvicer&尝试查找TransactionManagementConfigurer类型的所有bean

B2是工厂bean（检查工厂bean类型的快捷方式也失败了），spring需要创建完整的bean B2来比较类型。由于B2依赖于B1，因此产生循环参考

一种解决方法是确保Spring首先加载一个虚拟bean，比如说B0，这是任何bean都不会依赖的

Java配置：

@Configuration
@DependsOn("testBean2")
@EnableTransactionManagement
public class TestConfig
{
   @Bean
   public PlatformTransactionManager transactionManager()
   {
      DriverManagerDataSource dataSource = new DriverManagerDataSource();
      // MySQL database we are using
      dataSource.setDriverClassName("com.mysql.jdbc.Driver");
      dataSource.setUrl("jdbc:mysql://localhost:3306/db");// change url
      dataSource.setUsername("username");// change userid
      dataSource.setPassword("password");// change pwd

      PlatformTransactionManager transactionManager = new DataSourceTransactionManager(dataSource);
      return transactionManager;
   }
}

<?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:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd 
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
    <aop:aspectj-autoproxy />
    <context:component-scan base-package="test.config" />
    <bean id="testBean2" class="test.beans.TestBean2" />
    <bean id="testTransactionInterceptor"       class="org.springframework.transaction.interceptor.TransactionInterceptor">
        <property name="transactionManager" ref="transactionManager" />
        <property name="transactionAttributes">
            <props>
                <prop key="audit">PROPAGATION_REQUIRES_NEW</prop>
            </props>
        </property>
    </bean>
    <bean id="testBean1" class="org.springframework.aop.framework.ProxyFactoryBean"
        depends-on="testBean2">
        <property name="target">
            <bean class="test.beans.TestBean1" />
        </property>
        <property name="interceptorNames">
            <list>
                <value>testTransactionInterceptor</value>
            </list>
        </property>
    </bean>
</beans>

XML配置：

@Configuration
@DependsOn("testBean2")
@EnableTransactionManagement
public class TestConfig
{
   @Bean
   public PlatformTransactionManager transactionManager()
   {
      DriverManagerDataSource dataSource = new DriverManagerDataSource();
      // MySQL database we are using
      dataSource.setDriverClassName("com.mysql.jdbc.Driver");
      dataSource.setUrl("jdbc:mysql://localhost:3306/db");// change url
      dataSource.setUsername("username");// change userid
      dataSource.setPassword("password");// change pwd

      PlatformTransactionManager transactionManager = new DataSourceTransactionManager(dataSource);
      return transactionManager;
   }
}

<?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:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd 
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
    <aop:aspectj-autoproxy />
    <context:component-scan base-package="test.config" />
    <bean id="testBean2" class="test.beans.TestBean2" />
    <bean id="testTransactionInterceptor"       class="org.springframework.transaction.interceptor.TransactionInterceptor">
        <property name="transactionManager" ref="transactionManager" />
        <property name="transactionAttributes">
            <props>
                <prop key="audit">PROPAGATION_REQUIRES_NEW</prop>
            </props>
        </property>
    </bean>
    <bean id="testBean1" class="org.springframework.aop.framework.ProxyFactoryBean"
        depends-on="testBean2">
        <property name="target">
            <bean class="test.beans.TestBean1" />
        </property>
        <property name="interceptorNames">
            <list>
                <value>testTransactionInterceptor</value>
            </list>
        </property>
    </bean>
</beans>

传播需要新的
testTransactionInterceptor

将

@Bean

声明移动到

@Configuration

类

---

它将阻止一个bean方法调用两次

@Manh，我不确定这是否是问题所在。目前，这两个bean都是在XML中定义的。这很奇怪，您是否可以共享XML和您的配置类（如果有的话）？