1 Struktur projek
通过以下方式来指定Bean的初始化和销毁方法, 当Bean为单例时,Bean归Spring容器管理,Spring容器关闭,就会调用Bean的销毁方法 当Bean为多例时,Bean不归Spring容器管理,Spring容器关闭,不会调用Bean的销毁方法2
3. Kelas konfigurasi pendaftaran kacang (contoh tunggal)
public class Person { public Person(){ System.out.println("Person 创建了..."); } public void init(){ System.out.println("Person 初始化了..."); } public void destroy(){ System.out.println("Person 被销毁了..."); } }
import com.dashu.bean.Person; import org.springframework.context.annotation.*; @Configuration public class BeanConfig { @Bean(initMethod = "init",destroyMethod = "destroy") public Person person(){ return new Person(); } }
import com.dashu.bean.Person; import com.dashu.config.BeanConfig; import org.springframework.context.annotation.AnnotationConfigApplicationContext; public class Main { public static void main(String[] args) { //加载配置类获取容器 AnnotationConfigApplicationContext annotationConfigApplicationContext = new AnnotationConfigApplicationContext(BeanConfig.class); //获取Bean Person bean = annotationConfigApplicationContext.getBean(Person.class); //关闭容器 annotationConfigApplicationContext.close(); } }
import com.dashu.bean.Person; import org.springframework.context.annotation.*; @Configuration public class BeanConfig { @Scope("prototype") @Bean(initMethod = "init",destroyMethod = "destroy") public Person person(){ return new Person(); } }1 Orang
2 kelas konfigurasi pendaftaran Bean
import org.springframework.beans.factory.DisposableBean; import org.springframework.beans.factory.InitializingBean; public class Person implements InitializingBean, DisposableBean { public Person(){ System.out.println("Person 创建了..."); } @Override public void afterPropertiesSet() throws Exception { System.out.println("Person 初始化了..."); } @Override public void destroy() throws Exception { System.out.println("Person 被销毁了..."); } }1 Orang
import com.dashu.bean.Person; import org.springframework.context.annotation.*; @Configuration public class BeanConfig { @Bean public Person person(){ return new Person(); } }hasil ujian 5 Gunakan antara muka BeanPostProcessor untuk melaksanakan kelas (post-processor)
@PostConstruct:标注在Bean的初始化方法上 @PreDestroy:标注在Bean的销毁方法上
import javax.annotation.PostConstruct; import javax.annotation.PreDestroy; public class Person { public Person(){ System.out.println("Person 创建了..."); } @PostConstruct public void init(){ System.out.println("Person 初始化了..."); } @PreDestroy public void destroy(){ System.out.println("Person 被销毁了..."); } }
2. Orang
import org.springframework.stereotype.Component; import javax.annotation.PostConstruct; import javax.annotation.PreDestroy; @Component public class Person { public Person(){ System.out.println("Person 创建了..."); } @PostConstruct public void init(){ System.out.println("Person 初始化了..."); } @PreDestroy public void destroy(){ System.out.println("Person 被销毁了..."); } }
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