SpringBoot 测试Bean生命周期

首先上一张自制的自认为比较全的Spring Bean生命周期流程图：

测试代码：

1. 测试bean

   @Data
   public class BeanLifeCycle implements InitializingBean, DisposableBean, BeanFactoryAware, BeanNameAware {
   
       private String name;
   
       public BeanLifeCycle() {
           System.out.println("BeanTestLifeCycle no parameters constructor");
       }
   
       public BeanLifeCycle(String name) {
           this.name = name;
           System.out.println("BeanTestLifeCycle parameters constructor");
       }
   
       @Override
       public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
           System.out.println("execution BeanFactoryAware.setBeanFactory()");
       }
   
       @Override
       public void setBeanName(String name) {
           System.out.println("execution BeanNameAware.setBeanName()");
       }
   
       @Override
       public void afterPropertiesSet() throws Exception {
           System.out.println("execution InitializingBean.afterPropertiesSet()");
       }
   
       @Override
       public void destroy() throws Exception {
           System.out.println("execution DisposableBean.destroy()");
       }
   
       @PostConstruct
       public void postConstruct() {
           System.out.println("execution @PostConstruct()");
       }
   
       @PreDestroy
       public void preDestroy() {
           System.out.println("execution @PreDestroy()");
       }
   
       public void initMethod() {
           System.out.println("execution @Bean.initMethod()");
       }
   
       public void destroyMethod() {
           System.out.println("execution @Bean.destroyMethod()");
       }
   
   }
   
   

2. 测试BeanPostProcessor

   public class MyBeanPostProcessor implements BeanPostProcessor {
   
       @Override
       public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
           if (bean instanceof BeanLifeCycle) {
               System.out.println("execute BeanLifeCycle BeanPostProcessor.postProcessBeforeInitialization()");
           }
           return bean;
       }
   
       @Override
       public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
           if (bean instanceof BeanLifeCycle) {
               System.out.println("execute BeanLifeCycle BeanPostProcessor.postProcessAfterInitialization()");
           }
           return bean;
       }
   }
   

3. 配置Bean

   @Configuration
   public class BeanConfig {
   
       @Bean(initMethod = "initMethod", destroyMethod = "destroyMethod")
       public BeanLifeCycle getBeanTestLifeCycle() {
           return new BeanLifeCycle();
       }
   }
   

4. 运行程序，查看打印结果

   BeanTestLifeCycle no parameters constructor
   execution BeanNameAware.setBeanName()
   execution BeanFactoryAware.setBeanFactory()
   execution @PostConstruct()
   execution InitializingBean.afterPropertiesSet()
   execution @Bean.initMethod()
   2020-05-12 14:37:12.815  INFO 15640 --- [           main] o.f.c.internal.license.VersionPrinter    : Flyway Community Edition 5.2.1 by Boxfuse
   2020-05-12 14:37:12.842  INFO 15640 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
   2020-05-12 14:37:13.133  INFO 15640 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
   2020-05-12 14:37:13.139  INFO 15640 --- [           main] o.f.c.internal.database.DatabaseFactory  : Database: jdbc:mysql://172.31.9.185:3306/test (MySQL 5.6)
   2020-05-12 14:37:13.237  INFO 15640 --- [           main] o.f.core.internal.command.DbValidate     : Successfully validated 1 migration (execution time 00:00.019s)
   2020-05-12 14:37:13.251  INFO 15640 --- [           main] o.f.core.internal.command.DbMigrate      : Current version of schema `test`: 1
   2020-05-12 14:37:13.253  INFO 15640 --- [           main] o.f.core.internal.command.DbMigrate      : Schema `test` is up to date. No migration necessary.
   2020-05-12 14:37:13.444  INFO 15640 --- [           main] o.s.b.a.e.web.EndpointLinksResolver      : Exposing 2 endpoint(s) beneath base path '/actuator'
   2020-05-12 14:37:13.556  INFO 15640 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
   2020-05-12 14:37:13.563  INFO 15640 --- [           main] com.boot.demo.DemoApplication            : Started DemoApplication in 7.369 seconds (JVM running for 7.908)
   execution @PreDestroy()
   execution DisposableBean.destroy()
   execution @Bean.destroyMethod()
   
   

5. 安全退出方式
   windows在cmd中启动，ctrl+c方式安全退出。
   linux上启动程序，kill pid安全退出。
   idea中，找到如下图标点击，安全退出。