Use of spring4-@PostConstruct and @predestroy annotations

1. Create a MAVEN project, project name SPRINGDEMO41,

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2. Configure Maven, modify the Pom.xml file in the project, modify the content as follows

<project xmlns= "http://maven.apache.org/POM/4.0.0"  xmlns:xsi= "http://www.w3.org/2001/ Xmlschema-instance " xsi:schemalocation=" http://maven.apache.org/POM/4.0.0 http://maven.apache.org/ Xsd/maven-4.0.0.xsd ">  <modelVersion>1.0.0</modelVersion>  <groupId> Shequ</groupid>  <artifactid>springdemo13</artifactid>  <version> 0.0.1-snapshot</version>    <properties>  <java.version>1.7 </java.version>  <project.build.sourceencoding>utf-8</project.build.sourceencoding >  <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>   </properties>    <repositories>  <repository>   <id>codelds</id>  <url>https://code.lds.org/nexus/content/groups/main-repo </url>  </repository&gT;  </repositories>    <dependencies>  <dependency>   <groupid>javax.annotation</groupid>  <artifactid>jsr250-api</ artifactid>  <version>1.0</version>  </dependency>     <dependency>  <groupId>org.springframework</groupId>  < artifactid>spring-test</artifactid>  <version>4.1.4.release</version>   </dependency>    <dependency>  <groupid>junit</ Groupid>  <artifactid>junit</artifactid>  <version>4.10</version >  </dependency>    <dependency>  <groupId> org.springframework</groupid>  <artifactid>spring-core</artifactid>   <version>4.1.4.release</version>  </dependency>    <dependency>         <groupId>org.springframework</groupId>         <artifactid>spring-context</artifactid>        <version >4.1.4.RELEASE</version>    </dependency>         <dependency>        <groupId> Org.springframework</groupid>        <artifactid> spring-jdbc</artifactid>        <version>4.1.4.release< /version>    </dependency>        < dependency>        <groupid>mysql</groupid>         <artifactid>mysql-connector-java</artifactid>        < version>5.1.34</version>    </dependency>                 </dependencies>  <build/ ></project>

3. Create the entity Bean Forum, package name (Com.mycompany.shequ.bean) under Src/main/java

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4. Entity Bean Forum content is as follows

Package Com.mycompany.shequ.bean;public class Forum {private int fid;private String name;private int displayorder;public int Getdisplayorder () {return displayorder;} public void Setdisplayorder (int displayorder) {this.displayorder = Displayorder;} public int Getfid () {return FID;} public void Setfid (int fid) {this.fid = FID;} Public String GetName () {return name;} public void SetName (String name) {this.name = name;} @Overridepublic String toString () {return "{fid=>" +this.fid+ ",name=>" +this.name+ ",displayorder=>" + This.displayorder+ "}";}}

5. Create the interface Iforumservice under Src/main/java, package name (Com.mycompany.shequ.service)

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6. The contents of the interface Iforumservice are as follows

Package Com.mycompany.shequ.service;import Com.mycompany.shequ.bean.forum;public interface Iforumservice {public Forum Findforumbyid (int fid);}

7. Create the implementation class Forumserviceimpl for the interface Iforumservice under Src/main/java, package name (COM.MYCOMPANY.SHEQU.SERVICE.IMPL)

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8. The contents of the implementation class Forumserviceimpl of the interface Iforumservice are as follows

Package Com.mycompany.shequ.service.impl;import Javax.annotation.postconstruct;import Javax.annotation.PreDestroy ; Import Com.mycompany.shequ.bean.forum;import Com.mycompany.shequ.service.iforumservice;public class Forumserviceimpl implements Iforumservice {@PreDestroypublic void Destroymethod () {System.out.println (" Destroy-method ");} @PostConstructpublic void Initmethod () {System.out.println ("Init-method");} Public Forum Findforumbyid (int fid) {Forum forum = New Forum (); Forum.setname ("Init-method and Destroy-method"); return forum ;}}

9. Under Src/main/resource, create the bean profile spring-bean.xml,

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10. The contents of the configuration file Spring-bean.xml are as follows

<beans xmlns= "Http://www.springframework.org/schema/beans" xmlns:xsi= "http://www.w3.org/2001/ Xmlschema-instance "xmlns:p=" http://www.springframework.org/schema/p "xmlns:context="/HTTP/ Www.springframework.org/schema/context "xmlns:util=" Http://www.springframework.org/schema/util "xsi: Schemalocation= "http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/ spring-beans-4.0.xsdhttp://www.springframework.org/schema/utilhttp://www.springframework.org/schema/util/ spring-util-4.0.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/ Spring-context-4.0.xsd "><context:annotation-config/><bean id=" Forumservicebean "class=" Com.mycompany.shequ.service.impl.ForumServiceImpl "></bean></beans>

11. Under Src/main/resource, create the core configuration file Applicationcontext.xml,

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12. The content of the core configuration file Applicationcontext.xml is as follows

<beans xmlns= "Http://www.springframework.org/schema/beans" xmlns:xsi= "http://www.w3.org/2001/ Xmlschema-instance "xsi:schemalocation=" http://www.springframework.org/schema/beanshttp:// Www.springframework.org/schema/beans/spring-beans-4.0.xsd "><import resource=" Bean/spring-bean.xml "/> </beans>

13. Create a test file under Src/test/java apptest, package name (com.mycompany.shequ.test)

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14. The contents of the test file apptest are as follows

Package Com.mycompany.shequ.test;import Org.junit.test;import Org.springframework.context.configurableapplicationcontext;import Org.springframework.context.support.classpathxmlapplicationcontext;import    Com.mycompany.shequ.service.iforumservice;public class Apptest {@Testpublic void Beantest () { Configurableapplicationcontext context = new Classpathxmlapplicationcontext ("Applicationcontext.xml"); Forumservice Forumservice = (iforumservice) context.getbean ("Forumservicebean"); System.out.println (Forumservice.findforumbyid (1)); Context.close ();}}

15. Right-click on the Beantest method of the test class apptest and output the result

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This article from the "Vegetarian Yan" blog, declined to reprint!

Use of [email protected] and @predestroy annotations