Spring drip four: Spring bean life cycle

Spring Bean Life Cycle:

Understanding the life cycle of spring is important, and we can use the spring mechanism to customize the bean instantiation Process.

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Spring-service.xml:

<?xml version= "1.0" encoding= "UTF-8"? ><beans xmlns= "http://www.springframework.org/schema/beans"     xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance"    xsi:schemalocation= "http// Www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/ Spring-beans.xsd ">    <!--define a bean--    class=" Com.test.service.impl.NarCodeServiceImpl ">    </bean>    class=" Com.test.spring.BeanLifecycle "init-method=" init ">        <property name=" name "value=" Zhang San "></property >        <property name= "sex" value= "male" ></property>    </bean></beans>

Service Class:

 packagecom.test.spring;Importorg.springframework.beans.BeansException;Importorg.springframework.beans.factory.BeanClassLoaderAware;Importorg.springframework.beans.factory.BeanFactory;Importorg.springframework.beans.factory.BeanFactoryAware;Importorg.springframework.beans.factory.BeanNameAware;Importorg.springframework.beans.factory.DisposableBean;Importorg.springframework.beans.factory.InitializingBean;Importorg.springframework.beans.factory.config.BeanPostProcessor;Importorg.springframework.context.ApplicationContext;Importorg.springframework.context.ApplicationContextAware;Importorg.springframework.context.ApplicationEventPublisher;Importorg.springframework.context.ApplicationEventPublisherAware;Importorg.springframework.context.EnvironmentAware;Importorg.springframework.context.ResourceLoaderAware;Importorg.springframework.context.annotation.ImportAware;Importorg.springframework.core.env.Environment;Importorg.springframework.core.io.ResourceLoader;Importorg.springframework.core.type.AnnotationMetadata;Importcom.sun.org.apache.xml.internal.security.Init;/*** Testing the life cycle of spring beans *@authorZSS **/ public classBeanlifecycleImplementsinitializingbean,disposablebean,beanfactoryaware,beannameaware,beanpostprocessor{PrivateString name; PrivateString sex;  publicString getName () {returnname; }     public voidsetName (String Name) {System.out.println ("" Call Beanlifecycle Object "+ this. getName () + "property set method, set value:" +name);  this. Name =name; }     publicString getsex () {returnsex; }     public voidsetsex (String Sex) {System.out.println ("" Call Beanlifecycle Object "+ this. getsex () + "property set method, set value:" +sex);  this. Sex =sex; }     public voidinit () {System.out.println ("" The Init method is called "); }         public voidClose () {System.out.println ("" the Close method is called "); } @Override public voidAfterpropertiesset ()throwsException {System.out.println ( this); System.out.println ("" "beanlifecycle called the Initailizingbean Afterporpertiesset method ..."); } @Override public voidDestroy ()throwsException {System.out.println ("" beanlifecycle removed from the spring IOC container .... "); }//@Override//public void Setapplicationcontext (applicationcontext Paramapplicationcontext)//throws Beansexception {//System.out.print ("" "call applicationcontextaware interface Setapplicationcontext method:");//System.out.println (paramapplicationcontext); //        //    }//@Override//public void Setresourceloader (resourceloader paramresourceloader) {//System.out.print ("" "call resourceloaderaware interface Setresourceloader method:");//System.out.println (paramresourceloader); //    }//@Override//public void Setimportmetadata (annotationmetadata Paramannotationmetadata) {//System.out.println (333333); //    }//@Override//public void Setenvironment (environment Paramenvironment) {//System.out.print ("" "call environmentaware interface setenvironment method:");//System.out.println (paramenvironment); //    }@Override public voidsetbeanname (String Paramstring) {System.out.println ("" Call Beannameaware interface Setbenaname method: "+paramstring); } @Override public voidsetbeanfactory (beanfactory Parambeanfactory)throwsbeansexception {System.out.print ("" Call Beanfactoryaware interface setbeanfactory method: ");            System.out.println (parambeanfactory); }//@Override//public void Setbeanclassloader (ClassLoader paramclassloader) {//System.out.print ("" "call beanclassloaderaware interface Setbeanclassloader method:");//System.out.println (paramclassloader); //    }//@Override//public void Setapplicationeventpublisher (//Applicationeventpublisher Paramapplicationeventpublisher) {//System.out.print ("" "call applicationeventpublisheraware interface Setapplicationeventpublisher method:");//System.out.println (paramapplicationeventpublisher); //    }@Override publicString toString () {return"beanlifecycle [name=" + name + ", sex=" + sex + "]"; } @Override publicObject postprocessafterinitialization (object arg0, String arg1)throwsbeansexception {System.out.println ("the Postprocessafterinitialization Method was called"); return NULL; } @Override publicObject postprocessbeforeinitialization (object arg0, String arg1)throwsbeansexception {System.out.println ("the Postprocessbeforeinitialization Method was called"); return NULL; }}

Test:

 packagecom.test.spring;Importorg.junit.Before;Importorg.junit.Test;Importorg.springframework.context.ApplicationContext;Importorg.springframework.context.support.ClassPathXmlApplicationContext; public classT {classpathxmlapplicationcontext ApplicationContext=NULL; @Before public voidbefore () {System.out.println ("" Spring ApplicationContext container began to initialize ... "); ApplicationContext=NewClasspathxmlapplicationcontext (Newstring[]{"test1-service.xml"}); System.out.println ("" Spring ApplicationContext Container initialization is complete ... "); } @Test public voidtest () {beanlifecycle beanlifecycle=applicationcontext.getbean ("beanlifecycle", Beanlifecycle.class); //applicationcontext.close ();Applicationcontext.registershutdownhook (); }}

Test Results:

" Spring ApplicationContext container begins to initialize ...2017-03-18 20:29:20 info:classpathxmlapplicationcontext-refreshing org[email protected]6c7e6b26:startup date [Sat Mar 20:29:20 CST 2017]; Root of context Hierarchy2017-03-18 20:29:20 info:xmlbeandefinitionreader-loading XML Bean Definitions fromclassPath Resource [test1-service.xml] "call beanlifecycle object Null property set method, set Value: Thursday" "call beanlifecycle object Null property set method, Set the value is: male" " Call Beannameaware interface Setbenaname method: beanlifecycle "" call Beanfactoryaware interface setbeanfactory method: org.s[email protected] 2b763bac:defining Beans [narcodeservice,beanlifecycle]; Root of factory hierarchybeanlifecycle [name= Zhang san, sex=male] "" beanlifecycle called Initailizingbean's Afterporpertiesset method ... " Init method called Postprocessbeforeinitialization method called "Spring ApplicationContext container initialization is complete ...2017-03-18 20:29:20 info:classpathxmlapplicationcontext-closing org[email protected]6c7e6b26:startup date [Sat 18 2 0:29:20 CST 2017]; Root of context hierarchy "beanlifecycle removed from the spring IOC container ..." "close method is called

Spring drip four: Spring bean life cycle