spring通俗易懂1使用反转控制注入值

SpringSpring快速ApplicationContextapplicationnewClassPathXmlApplicationContext("beans.xml");oServiceo=(oService)application.getBean("oSpring");System.out.println(o);Property里面name属性就是javabean里面需要注入属性值的属性oBeaninfoApplicationContextapplicationnewClassPathXmlApplicationContext("beans.xml");Bean1bean1=(Bean1)application.getBean("bean1");运行结果 Bean.②.ApplicationContextapplicationnewClassPathXmlApplicationContext("beans.xml");Bean2bean2=(Bean2)③.Spring①.BeanidnameidIocname属性在Iocid属性即可。name属性。namename②．SingletonBean。destroy方法。LifeCycle销毁。。。。。populate(移植properties(属性BeanBeanNameAware如果Bean实现BeanFactoryAwareApplicationContextAwaresetBeanFactory如果存在类实现 BeanPostProcessor(后处理Bean)，执行用来动态扩展修改Bean。(程序自动调用后处理Bean)packageimport importorg.springframework.beans.factory.config.BeanPostProcessor;publicclassMyBeanPostProcessorimplementsBeanPostProcessor{ StringbeanName)throws ceptionreturnbean;//返回bean，表示没有修改，如果使用动态，返回代}publicObjectpostProcessBeforeInitialization(Objectbean,StringbeanName)throws ception}}BeanInitializingBean调用<beaninit-method="init">如果存在类实 BeanPostProcessor(处理 ，执BeanDisposableBean调用 destroy-method="customerDestroy">指定销毁方packageimportorg.springframework.beans.factory.BeanNameAware;importorg.springframework.beans.factory.DisposableBean;importorg.springframework.beans.factory.InitializingBean;importorg.springframework.context.ApplicationContext;importorg.springframework.context.ApplicationContextAware;publicclassLifeCycleBean1implementsprivateStringpublic{}publicStringgetInfo()return}publicvoidsetInfo(Stringinfo){=info;}publicvoidsetBeanName(StringbeanId)//TODOAuto-generatedmethodSystemou.printn("第三步：实现BeanNamAware接口，会注入Beanid："+beaId);//实现BeanNaeAare接口，通过setBeanName注入eans.xl文件中的id属性，配置文件在下面：参考输出lifeCyclBen1,即输出配置文件中的id属性。}publicvoidsetApplicationContext(ApplicationContextthrows ception//TODOAuto-generatedmethod}publicvoidafterPropertiesSet()throwsException//TODOAuto-generatedmethodstub}publicvoid{method='myinit'");}publicStringtoString(){return"LifeCycleBean1[info="+info+}publicvoiddestroy()throwsException}publicvoid{}}57c2bd:startupdate[FriNov1513:40:32CST2013];rootofcontext[BeanBeanbean进行(前面已经配置了其他的几个Bean,每个Bean都执行2次→前处理Bean后处理bean)。Spring，那么销毁方法就会执行。Springclose方法。使用<property>引入其他BeanBean，配置父子bean关系java类之间没有任何关系，这不是类的继承。ContextLoaderAPIContextLoaderContextLoaderListenerContextLoaderServletHttpServlet。这个接口 数配置信息，默认的路径是"/WEB-INF/applicationContext.xmlWEB-INF下创建的contextConfigLocationcontextviewincopyto<context-在一起并一“,”applicationContext-*.xml有applicationContext-ibatis-base.xml，applicationContext-action.xml，applicationContext-ibatis-dao.xmlapplicationContext.xml第一种：直接将之放到/WEB-INF下，之在web.xml中一个listener、的给出的，写成：viewincopyto<!--ContextConfigurationlocationsforSpringXMLfiles--perties存放class文件对应的是项目开发时的src classpathclasspath*注意：Component(“o”)相当于<beanid=”o”class=””>的id。Spring提供AnnotationConfigApplicationContextregister<beansxmlns=" 要手动配置Bean，然后使用Autowired进行自动寻找类型匹配进行注入。<beanid="productService"<beanid="productDao"class="cn.publicclassProductServiceprivateProductDaopublicvoid{}}publicvoiddoGet(HttpServletRequestrequest,HttpServletResponseresponse)throwsServletException,IOException{ApplicationContextapp=newUserServiceuser=(UserService)app.getBean("user");user.regist();}*.web.xml中配置<listener><listener-WebApplicationContextapplicationContext=另式WebApplicationContextapplicationContext=(WebApplicationContext)publicvoidpublicvoiddoGet(HttpServletRequestrequest,HttpServletResponseresponse)throwsServletException,IOException{WebApplicationContextweb=//ApplicationContextapp=newUserServiceuser=(UserService)web.getBean("user");}<beanid="user"class="cn.AOPAspectOrientedPrograming AspectJ是一个基于Java语言的AOP框架，Spring2.0开始，SpringAOP引入对Joinpoint(连接点):所谓连接点是指那些被到的点。在spring中,这些点指的是Advice(通知/增强):所谓通知是指到Joinpoint之后所要做的事情就是通知.通Introduction(引介):引介是一种特殊在不修改类代码的前提下,Target(目标对象):的目标对Weaving(织入):是指把增强(advice)应用到目标对象(Target)来创建新的对象()的过程.把advice放入Target创建的过程叫做织入。spring采用动态（）:一个类被AOP织入增强后，就产生一个结果Aspect(切面是切入点和通知（引介）★.AOP模客户不想或者不能够直接一个对象，而对象可以在客户端和目标对象之间起到（）角色：角色内部含有对真实的，从而可以在任何在任何时候都可以替代真实控制对真实的，负责在需要的时候创建真实主或之后，都要执行某个操作，而不是单纯地将调用传递给真实对象。**@author**@authorpublicinterfaceSubjectpublicvoid}★.①.publicclasspublicclassRealSubjectimplementsSubjectpublicvoidregist(){System.out.println("作。。。。。。publicpublicTestpublicstaticvoidmain(String[]args)SubjectrealSubject=new//创 对 Subject= Subject.regist();}}测试类JDK1.3public SubjectimplementsprivateSubjectpublicvoidsetRealSubject(Subjectsubject)this.subject=}publicvoidregist()longstartSystem.currentTimeMillis();longend=System.currentTimeMillis();}}编写动态程//publicinterfaceFly//publicinterfaceFlypublicvoid}publicclassBirdimplementsFlypublicvoidgoFly(){publicpublicTestpublicvoid{finalFlyfly=new fly.getClass().getInterfaces(),newInvocationHandler(){publicObjectinvoke(Object ,Methodmethod,Object[]throwsThrowable{System.out.println("鸟飞不走了！ 了return}returnmethod.invoke(fly,}//调 对象的业务方法}}}★.CGLIBJDKCGlib采用非常底层字节码技术，可以为一个类创建子类，解决无接口问publicpublicclassCatpublicvoidrun(){System.out.println("猫捉老 }}publicvoidpublicvoid{.finalCatcat=new。Enhancerenhancer=newenhancer.setCallback(newMethodInterceptor()//相比invocationhandler，多了一个 方 象publicObjectintercept(Object ,Methodmetod,Object[]args,)throwsThrowable②.cglib{ Objectresult=metod.invoke(cat,args); return}returnmetod.invoke(cat,}//生 对 =(Cat).run();Spring★.SpringAOPAOP为通知Advice定义了SpringAdvice5前置通知后置通知环绕通知异常抛出通知SpringAOP切面类型:*PointcutAdvisor:代表具有切点的切面，可以指定目标类哪些方*IntroductionAdvisor:代表引介切面，针对引介通知而使用切面（不要求掌握案例一：配置MethodBeforeAdvice：对目标类的所有方法进行①.jarAOP2个.aopalliance-1.0.0.jar（来自AOP）publicinterfaceIMethodBeforeAdvicepublicinterfaceIMethodBeforeAdvicepublicvoidsay publicvoidsearch();publicvoidfind();publicvoidsave();}publicpublicoServiceimplementsIMethodBeforeAdvicepublicvoid System.out.println("执行 o方 }publicvoidSystem.out.println("执行search方 }publicvoidSystem.out.println("执行find方 }publicvoidSystem.out.println("执行save方 publicclassoBeforeAdvicepublicvoidbefore(Methodmethod,Object[]args,throwsThrowable类配置真实业务bean配置真实业务bean<bean 配置通知，增强代码逻辑<bean <!--<bean " <property <propertyname="target" <propertyname="interceptorNames"ApplicationContextapp=ApplicationContextapp= o=(IMethodBeforeAdvice)o FactoryBeantarget:的目标对Interfaces:要实现的接TargetClass:是否对类而不是接口设置为true时使用CGLib代interceptorNames:singleton:返回是否为单实例，默认为单optimize:truepublicclassOrderServicepublicvoidexportOrder(){publicclassOrderServicepublicvoidexportOrder(){}publicvoiddeleteAllOrders(){}}publicinterfaceTimeMonitorablepublicvoidsetMonitorActive(boolean}②publicinterfaceTimeMonitorablepublicvoidsetMonitorActive(boolean}③.publicclasspublicclassMyIntroductionInterceptorDelegatingIntroductionInterceptorimplementsTimeMonitorableprivatebooleanisActive;publicObjectinvoke(MethodInvocationmi)throws{longbegin=0;longend=0;System.out.println("开 begin=}Objectresultsuper.invoke(mi);end=System.currentTimeMillis(); ，运行时间："+(end-begin)}returnresult}publicvoidsetMonitorActive(booleanisActive)this.isActive=<bean <bean 织入<bean <property <propertyname="target"<propertyname="interceptorNames"<!—trueCGLib<property TargetClass"ApplicationContextapplicationContext=ApplicationContextapplicationContext=OrderServiceorderService=(OrderService)applicationContext.getBean("orderServiceTimeMonitorablemonitorable=(TimeMonitorable)orderService.exportOrder();orderService.deleteAllOrders();⑥.性能，运行时间：1396322008225开始....性能，运行时间：16开始....2ok，然后使用注解@transactionalok<bean<propertyname="sessionFactory"Struts2+Spring+Hibernate<!--<constantname="struts.devMode"value="true"<package<!--<constantname="struts.devMode"value="true"<packagename="basic"extends="struts-default"<actionname="addProduct" .web.action.ProductAction"①.jarapps\struts2-blank.warstruts2jarstruts2-json-plugin-2.3.7.jarstruts2Ajax(这个很少使用struts2-spring-plugin-2.3.7.jarstruts2Spring(这个比较常用，但是我们现②.web.xml Spring3.2jar AOPweb应用中使用spring: springjunit整合：spring-test.jarJdbcTemte：spring-jdbc.jarspring-tx.jarspring整合其他ORM框架：spring- (用于整合Hibernate配置perties、web.xml配置器、src或WEB-INF下创applicationContext.xmlSpringJdbcSpringORMSpringwebSpringJunitHibernate：jar文件分析：解压 解压 解压 解压 log4j：slf4j-log4j12-1.7.2.jar、log4j-使用二级缓存mysql-connector-java-5.0.8-<beanid="productDAO" <!--<beanid="productDAO" <!--ServiceDAO<beanid="productService" <propertyname="productDAO"<context-<context-Servlet/FilterSpring ④.srcjdbc<property<property<property<property<!--<property<!--c3p0<!--SQL<property<property<!--Session<property<!--hbm ⑤.publicclasspublicclassProductActionextendsActionSupport{publicStringadd(){Productproduct=newProduct();//Spring ==returnSUCCESS;}}publicclasspublicclassProductServiceprivateProductDAOproductDAO;//dao属性在xmlpublicvoidsetProductDAO(ProductDAOproductDAO){ductDAO=productDAO;}//publicvoidaddProduct(Productproduct){}}Sessionpublicvoidsave(Productproduct)Sessionsession=HibernateUtils.getCurrentSession();Transactiontransaction=session.beginTransaction();mit();//}publicclassHibernateUtilsprivatestaticConfigurationconfiguration;privatepublicclassHibernateUtilsprivatestaticConfigurationconfiguration;privatestaticSessionFactorysessionFactory;//configuration=new//sessionFactory=}//SessionpublicstaticSessionreturn}//SessionpublicstaticSessiongetCurrentSession(){publicstaticSessiongetCurrentSession(){}}JavaBeanpublicclassProduct{privateIntegerid;privateStringname;privateDoubleprice;publicpublicclassProduct{privateIntegerid;privateStringname;privateDoubleprice;publicIntegergetId(){return}publicvoidsetId(Integerid){this.id=id;}publicStringgetName(){returnname;}publicvoidsetName(Stringname){=name;}publicDoublegetPrice(){returnprice;}publicvoidsetPrice(Doubleprice){this.price=price;}} <class <class <id.Product"table="products"<generator<property<property XmlActionSpring①.jarjarjar包即可。strutsspringactionspring管理：②.ActionpublicclasspublicclassProductActionextendsprivateProductServicepublicvoidsetProductService(ProductServiceproductService){ductService=}publicString{ProductproductnewProduct(); returnreturn}publicclassprivateProductDaopublicvoidpublicclassprivateProductDaopublicvoidsetProductDao(ProductDaoproductDao)ductDao=}publicvoidsave(Productproduct)//TODOAuto-generatedmethodstub}//}④.struts.xml<!--<!--在st