小弟现在要做这样一件事情:目前项目中用到的开发框架是:SSH,目前想实现监听用户对数据的增加、删除、修改操作,作为日志保存起来。现在的思路是:使用spring的事务监听机制,在Service层对指定的方法做监听。我现在已经做了以下配置:
<bean id="operateListener" class="com.util.listener.OperationListener"></bean>
<aop:config>
<aop:aspect id="TestAspect" ref="operateListener">
<!--配置com.spring.service包下所有类或接口的所有方法-->
<aop:pointcut id="businessService"
expression="execution(* com.domain.manager.*.*(..)) and args(...) " />
<aop:before pointcut-ref="businessService" method="doBefore"/>
<aop:after pointcut-ref="businessService" method="doAfter"/>
<aop:around pointcut-ref="businessService" method="doAround"/>
<aop:after-throwing pointcut-ref="businessService" method="doThrowing" throwing="ex"/>
</aop:aspect>
</aop:config>
监听类是:
public class OperationListener
{
public void doAfter(JoinPoint jp) {
System.out.println("log Ending method: "
+ jp.getTarget().getClass().getName() + "."
+ jp.getSignature().getName());
}
public Object doAround(ProceedingJoinPoint pjp) throws Throwable {
long time = System.currentTimeMillis();
Object retVal = pjp.proceed();
time = System.currentTimeMillis() - time;
System.out.println("process time: " + time + " ms");
return retVal;
}
public void doBefore(JoinPoint jp) {
System.out.println("log Begining method: "
+ jp.getTarget().getClass().getName() + "."
+ jp.getSignature().getName());
}
public void doThrowing(JoinPoint jp, Throwable ex) {
System.out.println("method " + jp.getTarget().getClass().getName()
+ "." + jp.getSignature().getName() + " throw exception");
System.out.println(ex.getMessage());
}
}
但现在一直没有实现监听效果,请高手请教!!!!!!
<bean id="operateListener" class="com.util.listener.OperationListener"></bean>
<aop:config>
<aop:aspect id="TestAspect" ref="operateListener">
<!--配置com.spring.service包下所有类或接口的所有方法-->
<aop:pointcut id="businessService"
expression="execution(* com.domain.manager.*.*(..)) and args(...) " />
<aop:before pointcut-ref="businessService" method="doBefore"/>
<aop:after pointcut-ref="businessService" method="doAfter"/>
<aop:around pointcut-ref="businessService" method="doAround"/>
<aop:after-throwing pointcut-ref="businessService" method="doThrowing" throwing="ex"/>
</aop:aspect>
</aop:config>
监听类是:
public class OperationListener
{
public void doAfter(JoinPoint jp) {
System.out.println("log Ending method: "
+ jp.getTarget().getClass().getName() + "."
+ jp.getSignature().getName());
}
public Object doAround(ProceedingJoinPoint pjp) throws Throwable {
long time = System.currentTimeMillis();
Object retVal = pjp.proceed();
time = System.currentTimeMillis() - time;
System.out.println("process time: " + time + " ms");
return retVal;
}
public void doBefore(JoinPoint jp) {
System.out.println("log Begining method: "
+ jp.getTarget().getClass().getName() + "."
+ jp.getSignature().getName());
}
public void doThrowing(JoinPoint jp, Throwable ex) {
System.out.println("method " + jp.getTarget().getClass().getName()
+ "." + jp.getSignature().getName() + " throw exception");
System.out.println(ex.getMessage());
}
}
但现在一直没有实现监听效果,请高手请教!!!!!!
解决方案 »
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<!--配置com.spring.service包下所有类或接口的所有方法-->
<aop:pointcut id="businessService"
expression="execution(* com.domain.manager.*.*(..))" />
试试
expression="execution(* com.domain.manager.*.*(..)) and args(...) " />
你这个不对吧, 改成这样试试:
expression="execution(* com.domain.manager.*.*(..))" 不知道你的包结构是怎样的,这里你在后面的
and args(...) 很是怪异。参数匹配使用前面第一个括号里面的规则。
<aop:advisor pointcut="execution(* com.sailing.app.uupms..*.*(..))"
advice-ref="txAdvice"/>
</aop:config>
execution(modifiers-pattern? ret-type-pattern declaring-type-pattern? name-pattern(param-pattern) throws-pattern?) 其中带问号的modifiers-pattern?(public/protected) 和 declaring-type-pattern? throws-pattern? 可以不填
可见execution(* com.sailing.app.uupms..*.*(..))代表com.sailing.app.uupms包下以及子包下的所有类
以execution(* *..BookManager.save(..))为列子
第一颗* 代表ret-type-pattern 返回值可任意,
*..BookManager 代表任意Pacakge里的BookManager类。
如果写成com.xyz.service.* 则代表com.xyz.service下的任意类
com.xyz.service..* com.xyz.service则代表com.xyz.service及其子package下的任意类
save代表save方法,也可以写save* 代表saveBook()等方法
(..) 匹配0个参数或者多个参数的,任意类型
(x,..) 第一个参数的类型必须是X
(x,,,s,..) 匹配至少4个参数,第一个参数必须是x类型,第二个和第三个参数可以任意,第四个必须是s类型。
看看资料上说的,自己看看有没有地方写错的。
org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: Unable to locate NamespaceHandler for namespace [http://www.springframework.org/schema/aop]
Offending resource: ServletContext resource [/WEB-INF/applicationContext-hibernate.xml]
at org.springframework.beans.factory.parsing.FailFastProblemReporter.error(FailFastProblemReporter.java:57)
at org.springframework.beans.factory.parsing.ReaderContext.error(ReaderContext.java:64)
at org.springframework.beans.factory.parsing.ReaderContext.error(ReaderContext.java:55)
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1144)
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1137)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:145)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:89)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:499)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:407)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:357)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:126)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:142)
at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:123)
at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:91)
at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:94)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:294)
at org.springframework.web.context.support.AbstractRefreshableWebApplicationContext.refresh(AbstractRefreshableWebApplicationContext.java:156)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:246)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:184)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:49)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4350)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:924)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:887)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1147)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
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(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:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
expression="execution(* com.domain.manager.*.*(..)) and args(...) " />
这里的 and args(...)??? 这个确实有点怪异。。没见过这样写的
<bean id="txManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED"/>
<tx:method name="get*" read-only="true"/>
<tx:method name="find*" read-only="true"/> </tx:attributes>
</tx:advice>
<!-- 事务切面 -->
<aop:config>
<aop:pointcut id="bussinessService"
expression="execution(public * com.wr.service.*.*(..))" />
<aop:advisor pointcut-ref="bussinessService"
advice-ref="txAdvice" />
</aop:config>
<!-- 声明切面 -->
<aop:config>
<aop:pointcut expression="execution(public * com.wr.service.*.save*(..))" id="serviceSave"/>
<aop:aspect id="saveAspect" ref="transactionSave">
<aop:after pointcut-ref="serviceSave" method="afterSave" ></aop:after>
</aop:aspect>
</aop:config>