studyspring ioc aop動態(tài)代理高級原理aspectj

javaWebFilterAOP的感覺外，AOPweb/article/details/ SpringAOP面向切面詳解（帶實例）利用實現(xiàn)登陸控制【基本】2、springMVC自帶的器Aop通知/（略對象AspectJ此代碼用的是注解配置方式。一、必備jar我曾在這里過jar包來aspectj的地方 springaop當然，如果是當然，如果是maven項目，spring的aop會自動把依賴的jar文 publicclassUserServiceImplimplementspublicvoidpublicclassUserServiceImplimplementspublicvoidsave()packagepublicinterfaceUserServicepublicvoidsave();publicvoiddelete();publicvoidupdate();publicvoid}package}publicvoiddelete(){}publicvoidupdate(){ //inta7/0}publicvoidselect(){}}}}packagepackageimport//publicclassTransactionAdvicepublicvoidbefore(){publicvoidafterReturning()}publicvoidafter()}publicvoidafterException(){}publicObjectaround(ProceedingJoinPointpoint)throwsThrowableSystem.out.println("Objectproceed=ceed();//調(diào)用目標方法System.out.println("環(huán)繞后通知被執(zhí)行");return}<?xmlversion="1.0"encoding="UTF-<beans""""<?xmlversion="1.0"encoding="UTF-<beans"""" 法一：純xml配置方<beanname="userService1"<beanname="transactionAdvice"選擇切入點spring<aop:pointcutexpression="execution(publicvoid<aop:aspect<aop:aspectref="transactionAdvice"引入通知對象//正因為這里的ref<aop:beforemethod="before"pointcut-ref="point"<aop:aftermethod="after"pointcut-ref="point"<aop:aroundmethod="around"pointcut-<aop:after-returningmethod="afterReturning"pointcut-<aop:after-throwingmethod="afterException"pointcut-法二：注解配置方 /> />1、類上加@Aspect 3、指定各種通知方法，即在各個方法上標注@Before、@After、@Around等等，并添加。packagepackageimportimportimportorg.aspectj.lang.annotation.AfterReturning;importorg.aspectj.lang.annotation.AfterThrowing;importorg.aspectj.lang.annotation.Around;importorg.aspectj.lang.annotation.Aspect;importorg.aspectj.lang.annotation.Before;importorg.aspectj.lang.annotation.Pointcut;publicclassTransactionAdvice@Pointcut("execution(publicvoidpublicvoidpointCut()publicvoidbefore(){}publicvoidafterReturning()}publicvoidafter()}publicvoidafterException()}publicObjectaround(ProceedingJoinPointpoint)throwsThrowableSystem.out.println("Objectproceed=ceed();//調(diào)用目標方法System.out.println("環(huán)繞后通知被執(zhí)行");return}}////ponent2xml配置文件中用"/>importimportimportimportimportpublicclassAopTestpublicstaticvoidmain(String[]args)ApplicationContextcontext= UserServiceu= //下面這句會報錯，原因說法是：動 //UserServiceImplu2= UserServiceu3=newUserServiceImpl();}}運行結(jié)后置通知被執(zhí)行（無論是否出現(xiàn)異常都要調(diào)用后置通知被執(zhí)行（出現(xiàn)異常不調(diào)用類名2類對象aspectJhttpsession見SpringmvcAOPController獲取importimportimportimportHttpServletRequestrequest=((ServletRequestAttributes)HttpSessionsession@Around方法與““不放行publicObjectaround(ProceedingJoinPointpointthrowsThrowableSystem.out.println("環(huán)繞前通知被執(zhí)行");Objectproceedceed();//System.out.println("return} publicclassAllFilterimplementspublicvoiddoFilter(ServletRequestrequest,ServletResponseresponse,FilterChainthrowsIOException,ServletException{System.out.println("時間1System.currentTimeMillis());chain.doFilter(request,response);//放行將請求傳遞下去System.out.println("時間2System.currentTimeMillis());}}Servlet 在在 returnxxx/yyy/zzz//也可以嘗試返回一個對象returnceed