spring常用知识点总结

Spring的作 Spring配置文件的读取方式1．ApplicationContextac=new2．ApplicationContextac=newResourcers=newFileSystemResource("src/applicationContext.xml");BeanFactoryfactory=newXmlBeanFactory(rs);Resourcers=newClassPathResource("spring.xml");BeanFactoryfactory=newXmlBeanFactory(rs);三 Spring读取多个配置文ApplicationContextcontext=newClassPathXmlApplicationContext(xmls); = <import<import<import<beanid="bean1"<beanid="bean2" <beanid=“us”class=“sf.UserServiceFactory”factory-publicstaticUserServicecreateService(){returnnew}}<beanid=“uf”<beanid=“us”factory-bean=“uf”factory-PublicclasspublicUserServicecreateService(){returnnew}}五 Spring依赖注入的三种方SetterxxsetXx()property标签中，如Stringvalue标签，如果是引用其他的类类refList，Map，Property等用以下方publicclassListmsg=null;publicvoidsetMsg(Listmsg){this.msg=msg;}}xml id="Hello"<property<value>Hello<value>Hello2:publicclassSetmsg=null;publicvoidsetMsg(Setmsg){this.msg=msg;}}xml id="Hello"<property<value>Hello<ref3:

<value>HellopublicclassMapmsg=null;publicvoidsetMsg(Mapmsg){this.msg=msg;}}xml id="Hello"<property<entry<value>Hello<entry<value>HellopublicclassPropertiesmsg;publicvoidsetMsg(Propertiesmsg){this.msg=msg;}}xml id="Hello"<property<propkey="h1">Hello<propkey="h2">Hello六 Spring实例的延迟加默认情况下容器启动时初始化bean，但我们可以指定bean节点的class=“xx.Xx”lazy-init=“true”/>bean都想设置延迟加载，可beans设置default-lazy-init=“true”,<beansdefault-lazy-init=“true”>七．Spring<beanid=“xx”class=“xx.Xx”八．Spring的代理机制Jdk当代理对象没有实现接口,CGLIB,需要cglib-nodep-2.1_3.jarCGlibProxyFactory,需要实现MethodInterceptor接口JDK需要代理的对象要实现接口