达内-java视频spring day了解AOP是什么掌握使用Aop编程步骤

知识点列1*2Aop3掌握常用类型，共54*注 什么是AOP及其好处 AOP相关概念 【案例1】AOP演示 通知类型 【案例2】使用通知类型 切入点表达式 【课堂练习1】记录异常日志 AOP及其好处AspectOrientedProgrammingAOP相关概念切面AutoProxy目标对象有接口采用JDK1】AOP演示Jar劢态需要packagepackage{publicvoidupdate();publicvoiddelete();publicvoidsave();}packagepackagepublicclassUserServiceImplimplementsUserServicepublicvoiddelete({System.out.println("删除用户信息");}publicvoidsave(){System.out.println("保存用户信息");}}<beans""""<beanid="userserivce"packagepackageimportimportpublicclassTestprivatestaticfinalStringCONFIG=*@parampublicstaticvoidmain(String[]{ApplicationContextacnewClassPathXmlApplicationContext(CONFIG);}}}packagepackage@authorpublicclassOptLoggerpublicvoidSystem.out.println("记录操作}}<beans""""<beanid="userserivce"<beanid="optlogger"<aop:pointcutid="servicepointcut"expression="execution(*tarena.service.*.*(..))"/><aop:aspectid="loggeraspect"<aop:beforemethod="logger"pointcut-<aop:aspect 用于关联切面的 类似于正则形式的表达式（后期讲，先使用execution(* <beanid="optlogger"<aop:pointcutid="servicepointcut"expression="execution(*tarena.service.*.*(..))"/><aop:aspectid="loggeraspect"<beanid="optlogger"<aop:pointcutid="servicepointcut"expression="execution(*tarena.service.*.*(..))"/><aop:aspectid="loggeraspect"packagepackageimport**@author*publicclassOptLoggerpublicObjectlogger(ProceedingJoinPointpjp)throwsObjectobj=ceed();clazzNamemethodreturn}}packagepackageimportimportpublicclassPropertiesUtilstaticPropertiesprops=newprivatepublicstaticPropertiesgetInstance(Stringthrows}}return}publicstaticStringgetProperty(Stringkey){Stringval="";if(props!=Stringprop=if(prop!=val=}}return}packagepackageimportimport@authorpublicclassOptLoggerpublicObjectlogger(ProceedingJoinPointthrows=StringmethodName=pjp.getSignature().getName();}}}Stringkey=return（案例结束通知类型}2】使用通知类型packagepackagepublicclassAopBeanpublicmybefore(){System.out.println("-}<beans""""<beanid="aopbean"<aop:aspectid="aspectbean"packagepackageimportimportpublicclassTest1privatestaticfinalStringCONFIG=*@parampublicstaticvoidmain(String[]args)ApplicationContextacnewClassPathXmlApplicationContext(CONFIG);UserServiceuserService=}catch(Exception}}}} packagepublicclassAopBeanpublicmybefore(){System.out.println("-}public}<<beanid="userservice"<<beanid="aopbean"<aop:pointcutid="servicepointcut"<aop:aspectid="aspectbean"packagepackagepublicclassUserServiceImplimplementsUserServicepublicvoid}publicvoid{}publicvoid}Strings=packagepackagepublicclassUserServiceImplimplementsUserServicepublicvoid Strings= }publicboolean{System.out.println("保存用户信}publicvoidreturnpackagepackagepublicclassAopBeanpublicmybefore(){System.out.println("-}publicvoid}<<beanid="userservice"<beanid="aopbean"<aop:pointcutid="servicepointcut"<aop:aspectid="aspectbean"returning="retVal"cepointcut"/>packagepackagepublicclassAopBeanpublicmybefore(){System.out.println("-}publicvoid}public}<<beanid="userservice"<beanid="aopbean"<aop:pointcutid="servicepointcut"<aop:aspectid="aspectbean"packagepackagepublicclassUserServiceImplimplementsUserServicepublicvoid}publicbooleansave()Strings=}}return}publicvoid{System.out.println(packagepackagepublicclassUserServiceImplimplementsUserServicepublicvoidtry}}catch(Exceptione)}}publicboolean");returntrue;}publicvoid{System.out.println(}Strings=packagepackagepublicclassAopBeanpublicmybefore(){System.out.println("-}publicvoid}publicvoidmyafterException(Exceptionex){System.out.println("--异常通知begin--");ex.printStackTrace();}}<<beanid="userservice"<beanid="aopbean"<aop:pointcutid="servicepointcut"<aop:aspectid="aspectbean"packagepackagepublicclassUserServiceImplimplementsUserServicepublicvoidStrings=null;}publicboolean");returntrue;}publicvoid}} packagepublicclassAopBeanpublicmybefore(){System.out.println("-}publicvoid}}}publicvoid}}<<beanid="userservice"<beanid="aopbean"<aop:pointcutid="servicepointcut"<aop:aspectid="aspectbean"<aop:aftermethod="myafter"（案例结束切入点表达式请Spring2.5Reference中文版.zip（注 SpringFrameWork技术--使用Spring@AspectJ.execution(public*execution(*execution(*execution(*com.xyz.service.*.*(..))execution(*（上面的丌包括子包thistarget1】记录异常日志log4j的jar请log4j-1.2.11.zippackagepackageimportpublicclassExceptionLoggerLoggerlogger=publicvoidloggerExcetpion(Exception}}<aop:pointcutid="servicepointcut"expression="execution(*tarena.service.*.*(..))"/><<aop:aspectid="loggeraspect"packagepackagepublicclassUserServiceImplimplementsUserServicepublicvoidStrings=null;}publicboolean");returntrue;}publicvoid}}packagepackageimportimportpublicclassTest1privatestaticfinalStringCONFIG=}}*@parampublicstaticvoidmain(String[]args)tryApplicationContextacnewClassPathXmlAppl