[英]Spring Web - Circular Reference on enabling AspectJ & Transaction Management
在以下條件下,Spring Web產生循環引用
以下是我的分析。
一種解決方法是確保Spring首先加載一個虛假的bean,即B0,沒有bean依賴。
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配置:
<?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>
將您的@Bean
聲明移到@Configuration
類。
它將防止一個調用兩次的bean方法
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