CGLIB 를 통한 구조 함수 주입 시 AOP 에 이상 발생

16621 단어 자바apache.springAOP.net
(이 문 제 는 순수한 기술 문제 라 고 생각 하지만 포럼 에 올 려 서 물 어 보 는 것 이 좋 습 니 다.왜냐하면 저 는 인터넷 에서 한참 동안 찾 아 봤 지만 해결 방법 을 찾 지 못 했 기 때 문 입 니 다.만약 굳이 나 에 게 문답 에 들 어가 야 한다 면 나 도 성질 이 없다.)
현상 묘사
Struts 2+Spring,Action 에 Service,Service 에 Dao 를 주입 합 니 다.
Service 에 서 는 인 터 페 이 스 를 사용 하지 않 았 습 니 다.인터넷 자료 에 따 르 면 CGLIB 를 사용 하여 클래스 대상 을 만들어 야 합 니 다.
이전 에는 Set 주입 을 사용 할 때 아무런 문제 가 없 었 고 모든 것 이 정상 이 었 다.
이틀 전에 Spring in Action 을 봤 는데 Dao 에 Service 를 주입 할 때 구조 함 수 를 통 해 주입 하 는 것 이 좋 습 니 다.
오늘 밤 구조 함 수 를 통 해 주입 하 는 것 으로 바 뀌 었 을 때 이상 이 발생 했 습 니 다.CGLIB 의 로드 대상 과정 에 대해 잘 모 르 기 때문에 원인 을 알 수 없습니다.여러분 이 도와 주세요.
구체 적 실현
서비스 클래스 의 실현
public class UserService {

	private IUserDao userDao;
	
	public UserService(IUserDao userDao) {
		this.userDao = userDao;
	}
}

applicationContext.xml 설정
	<!-- Spring iBatis    -->
	<bean id="sqlMapClient"
		class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
		<property name="configLocation"
			value="WEB-INF/SqlMapConfig.xml" />
		<property name="dataSource" ref="dataSource" />
	</bean>

	<!-- spring          -->
	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource">
			<ref local="dataSource" />
		</property>
	</bean>

	<!-- AOP    service        -->
	<aop:config proxy-target-class="true">
		<aop:pointcut id="serviceOperation"
			expression="execution(* cn.ipcat.service.*.*(..))" />
		<aop:advisor pointcut-ref="serviceOperation"
			advice-ref="txAdvice" />
	</aop:config>

	<!--      -->
	<tx:advice id="txAdvice" transaction-manager="transactionManager">
		<tx:attributes>
			<!--    -->
			<tx:method name="save*" rollback-for="Exception" />
			<!--    -->
			<tx:method name="insert*" rollback-for="Exception" />
			<tx:method name="create*" rollback-for="Exception" />
			<!--    -->
			<tx:method name="update*" rollback-for="Exception" />
			<!--    -->
			<tx:method name="delete*" rollback-for="Exception" />
			<!--       -->
			<tx:method name="*" read-only="true"
				rollback-for="Exception" />
		</tx:attributes>
	</tx:advice>

	<!-- DAO  -->
	<bean id="userDao" class="cn.ipcat.entity.user.UserDao">
		<property name="sqlMapClient">
			<ref bean="sqlMapClient"></ref>
		</property>
	</bean>

	<!-- Service -->
	<bean id="userService" class="cn.ipcat.service.UserService">
		<constructor-arg>
			<ref bean="userDao" />
		</constructor-arg>
	</bean>

struts.xml 설정
생략
제 개인 적 인 테스트 분석.
응용 프로그램 Context.xml 에 다음 단락 의 기술 을 추가 하지 않 으 면 괜 찮 습 니 다.추가 하면 오류 가 발생 합 니 다.
'op:pointcut'의'expression'문제 일 수 있 습 니 다.파 라 메 터 를 가 진 구조 함수 로 대상 을 생 성 할 때 절단면 통 제 를 하여 문 제 를 일 으 킬 수 있 습 니 다.그런데 왜 Set 방식 으로 주입 할 때 괜 찮 은 지 알 수가 없습니다.
만약 정말"expression"의 문제 라면 매개 변 수 를 가 진 구조 함수 에 대해 어떻게 써 야 합 니까?

	<!-- AOP    service        -->
	<aop:config proxy-target-class="true">
		<aop:pointcut id="serviceOperation"
			expression="execution(* cn.ipcat.service.*.*(..))" />
		<aop:advisor pointcut-ref="serviceOperation"
			advice-ref="txAdvice" />
	</aop:config>

구체 적 인 오류 정보
tomcat 가 시작 되 자마자 각 종류의 대상 을 미리 불 러 오 는 중 오류 가 발생 했 습 니 다.
  : Initializing Spring root WebApplicationContext
[ERROR]_2008-11-30 22:27:27_org.springframework.web.context.ContextLoader@(ContextLoader.java:215):Context initialization failed
 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService' defined in ServletContext resource [/WEB-INF/appcontext/UserAppContext.xml]: Initialization of bean failed; nested exception is org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class cn.ipcat.service.UserService]: Common causes of this problem include using a final class or a non-visible class; nested exception is java.lang.IllegalArgumentException: Superclass has no null constructors but no arguments were given
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:480)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:729)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:381)
	at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
	at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
	at org.apache.catalina.core.StandardService.start(StandardService.java:516)
	at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Caused by: org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class cn.ipcat.service.UserService]: Common causes of this problem include using a final class or a non-visible class; nested exception is java.lang.IllegalArgumentException: Superclass has no null constructors but no arguments were given
	at org.springframework.aop.framework.Cglib2AopProxy.getProxy(Cglib2AopProxy.java:213)
	at org.springframework.aop.framework.ProxyFactory.getProxy(ProxyFactory.java:110)
	at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.createProxy(AbstractAutoProxyCreator.java:488)
	at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:363)
	at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:324)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:361)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1343)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473)
	... 29 more
Caused by: java.lang.IllegalArgumentException: Superclass has no null constructors but no arguments were given
	at net.sf.cglib.proxy.Enhancer.emitConstructors(Enhancer.java:721)
	at net.sf.cglib.proxy.Enhancer.generateClass(Enhancer.java:499)
	at net.sf.cglib.transform.TransformingClassGenerator.generateClass(TransformingClassGenerator.java:33)
	at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
	at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216)
	at net.sf.cglib.proxy.Enhancer.createHelper(Enhancer.java:377)
	at net.sf.cglib.proxy.Enhancer.create(Enhancer.java:285)
	at org.springframework.aop.framework.Cglib2AopProxy.getProxy(Cglib2AopProxy.java:201)
	... 36 more
2008-11-30 22:27:27 org.apache.catalina.core.StandardContext listenerStart
  : Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService' defined in ServletContext resource [/WEB-INF/appcontext/UserAppContext.xml]: Initialization of bean failed; nested exception is org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class cn.ipcat.service.UserService]: Common causes of this problem include using a final class or a non-visible class; nested exception is java.lang.IllegalArgumentException: Superclass has no null constructors but no arguments were given
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:480)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:729)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:381)
	at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
	at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
	at org.apache.catalina.core.StandardService.start(StandardService.java:516)
	at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Caused by: org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class cn.ipcat.service.UserService]: Common causes of this problem include using a final class or a non-visible class; nested exception is java.lang.IllegalArgumentException: Superclass has no null constructors but no arguments were given
	at org.springframework.aop.framework.Cglib2AopProxy.getProxy(Cglib2AopProxy.java:213)
	at org.springframework.aop.framework.ProxyFactory.getProxy(ProxyFactory.java:110)
	at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.createProxy(AbstractAutoProxyCreator.java:488)
	at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:363)
	at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:324)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:361)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1343)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473)
	... 29 more
Caused by: java.lang.IllegalArgumentException: Superclass has no null constructors but no arguments were given
	at net.sf.cglib.proxy.Enhancer.emitConstructors(Enhancer.java:721)
	at net.sf.cglib.proxy.Enhancer.generateClass(Enhancer.java:499)
	at net.sf.cglib.transform.TransformingClassGenerator.generateClass(TransformingClassGenerator.java:33)
	at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
	at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216)
	at net.sf.cglib.proxy.Enhancer.createHelper(Enhancer.java:377)
	at net.sf.cglib.proxy.Enhancer.create(Enhancer.java:285)
	at org.springframework.aop.framework.Cglib2AopProxy.getProxy(Cglib2AopProxy.java:201)
	... 36 more
2008-11-30 22:27:27 org.apache.catalina.core.StandardContext start
  : Error listenerStart
2008-11-30 22:27:27 org.apache.catalina.core.StandardContext start
  : Context [] startup failed due to previous errors
2008-11-30 22:27:27 org.apache.catalina.core.ApplicationContext log
  : Closing Spring root WebApplicationContext

나 는 이미 결 과 를 분석 해 냈 다.
만약 당신 에 게 같은 문제 가 있다 면 아래 의 문장 을 읽 으 세 요.
http://netfork.iteye.com/blog/286215
C 언어 는 동적 배열 을 사용 하여 순환 대기 열 을 실현 합 니 다.
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