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项目组内一位同事,在重构代码过程中将几个模块的Service层接口去掉后. 修改成了没有实现任何接口的类,并且继承了一个抽象基类。
然后我更新代码后执行系统中的该模块,发现部分表数据没有完整持久到数据库中。看了下代码和spring配置文件,原来调整后的Biz的业务类没有配置事务导致的。
修改了下spring配置文件(beanNames绑定了*Biz):
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
    <bean id= "propertyConfigurer"          
        class 
= "com.ccms.base.util.DecryptPropertyPlaceholderConfigurer" >          
     <property name="locations" value= "classpath:sysConfig.properties" />          
   </bean>      
    <!-- 
   <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
        destroy-method="close">
        <property name="driverClassName">
            <value>com.mysql.jdbc.Driver</value>
        </property>
        <property name="url">
            <value>${dataSource.jdbcUrl}&amp;useUnicode=true&amp;characterEncoding=UTF-8</value>
        </property>
        <property name="username">
            <value>${dataSource.userName}</value>
        </property>
        <property name="password">
            <value>${dataSource.password}</value>
        </property>
        <property name="maxActive">
            <value>100</value>
        </property>
        <property name="initialSize">
            <value>5</value>
        </property>
        <property name="maxIdle">
            <value>10</value>
        </property>
        <property name="minIdle">
            <value>0</value>
        </property>
        <property name="maxWait">
            <value>-1</value>
        </property>
        <property name="defaultAutoCommit">
            <value>false</value>
        </property>
        <property name="testOnBorrow">
            <value>true</value>
        </property>
        <property name="testWhileIdle">
            <value>true</value>
        </property>
        <property name="timeBetweenEvictionRunsMillis">
            <value>600000</value>
        </property>
        <property name="numTestsPerEvictionRun">
            <value>20</value>
        </property>
        <property name="minEvictableIdleTimeMillis">
            <value>3600000</value>
        </property>
    </bean>
   
-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close" >
        <property name="driverClass" value="com.mysql.jdbc.Driver" />
        <property name="jdbcUrl" value="${dataSource.jdbcUrl}&amp;useUnicode=true&amp;characterEncoding=UTF-8" />
        <property name="user" value="${dataSource.userName}" />
        <property name="password" value="${dataSource.password}" />
          <property name="minPoolSize" value="5" />
        <property name="maxPoolSize" value="50" />
        <property name="maxStatements" value="0" />
        <property name="idleConnectionTestPeriod" value="60" />
        <property name="acquireRetryAttempts" value="3" />
    </bean>

    <!-- Session Factory -->
    <bean id="sessionFactory"
        class
="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="dataSource">
            <ref local="dataSource" />
        </property>
    <!-- hbm配置文件的classPath路径 -->
        <property name="mappingDirectoryLocations">
            <list>
                <value>classpath:/com/ccms/base/mapping</value>
            </list>
        </property>

        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.generate_statistics">true</prop>
                <prop key="hibernate.connection.release_mode">auto</prop>
                <prop key="hibernate.autoReconnect">true</prop> 
                <prop key="hibernate.connection.autocommit">false</prop>
                <!-- <prop key="hibernate.query.factory_class">org.hibernate.hql.ast.ASTQueryTranslatorFactory</prop> -->
            </props>
        </property>
    </bean>

    <bean id="myTransactionManager"
        class
="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <property name="sessionFactory">
            <ref bean="sessionFactory" />
        </property>
    </bean> 

    <bean id="transactionInterceptor"
        class
="org.springframework.transaction.interceptor.TransactionInterceptor">
        <property name="transactionManager" ref="myTransactionManager" />
        <property name="transactionAttributes">
            <props>
                <prop key="*">PROPAGATION_REQUIRED,-Exception</prop>
            </props>
        </property>
    </bean>
    <bean  class="org.springframework.transaction.interceptor.TransactionAttributeSourceAdvisor">
        <property name="transactionInterceptor"
            ref
="transactionInterceptor" />
    </bean>
    <bean
        
class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
        <property name="beanNames">
            <list>
                <value>*Service</value>
                <value>*Biz</value>
            </list>
        </property>
        <property name="interceptorNames">
            <list>
                <value>transactionInterceptor</value>
            </list>
        </property>
    </bean>
</beans>

启动tomcat后报出如下错误信息:
[2013-03-05 10:36:56] [ERROR] Context initialization failed - at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:215) 
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginBiz' defined in ServletContext resource [/WEB-INF/spring-service-resource.xml]: Initialization of bean failed; nested exception is org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class com.ccms.login.LoginBiz]: 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:445)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:383)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:353)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:245)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:169)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:242)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:400)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:736)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:369)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:261)
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:4135)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4630)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
at org.apache.catalina.core.StandardService.start(StandardService.java:519)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class com.ccms.login.LoginBiz]: 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:433)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:299)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:331)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1266)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:438)
... 28 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:718)
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)
... 34 more
2013-3-5 10:36:56 org.apache.catalina.core.StandardContext listenerStart
严重: 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 'loginBiz' defined in ServletContext resource [/WEB-INF/spring-service-resource.xml]: Initialization of bean failed; nested exception is org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class com.ccms.login.LoginBiz]: 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:445)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:383)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:353)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:245)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:169)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:242)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:400)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:736)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:369)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:261)
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:4135)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4630)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
at org.apache.catalina.core.StandardService.start(StandardService.java:519)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class com.ccms.login.LoginBiz]: 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:433)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:299)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:331)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1266)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:438)
... 28 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:718)
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)
... 34 more
2013-3-5 10:36:56 org.apache.catalina.core.StandardContext start

------------------------------------------
通过以上错误分析之:对于实现了接口的类,直接用了JDK的动态代理,把目标对象扔给JDK的Proxy,拿到代理对象就OK了。然而对于没有实现接口的类,Spring借助于CGLIB来实现代理。
解决办法:
当使用CGLIB来实现代理后,没有实现接口的类
1、 通过构造函数形式注入时必须有默认的构造函数,否则就会出现上面的异常。
2、通过生产setter或者getter方法注入。
3、通过修改Spring的CglibProxyFactory工厂类。

详细解析可以参照这篇文章:http://netfork.iteye.com/blog/286215
posted on 2013-03-05 14:54 David1228 阅读(4108) 评论(0)  编辑  收藏 所属分类: SpringJ2EE

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