Spring 4. Part 1 - IoC, AOP
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Технический семинар для сотрудников компании МаксимаТелеком , проведенная 18.05.2016. В ходе семинара рассматривались следующие ключевые моменты: 1) IoC принцип 2) Beans life cycle 4) AOP 5) Spring proxy
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Spring 4. Part 1 - IoC, AOP
- 1. Накрайников Олег uchonyy@gmail.com Spring 4. Part 1 Java. The well-known and not well-known IoC, AOP
- 2. Пролог. А что если скоро наступит spring?
- 3. О чем поговорим сегодня ▪ IoC принцип ▪ Beans life cycle ▪ AOP ▪ Spring proxy
- 5. Inversion of Control (IoC) – основные понятия ▪ BeanFactory и ApplicationContext ▪ Bean и BeanDefinition ▪ BeanFactory и FactoryBean ▪ BeanFactoryPostProcessor и BeanPostProcessor
- 6. Этапы инициализации контекста Парсинг конфигурации и создание BeanDefinition Настройка созданных BeanDefinition (BeanFactoryPostProce ssor ) Создание бинов (BeanFactory и FactoryBean) Настройка созданных BeanDefinition BeanPostProcessor
- 7. Жизненный цикл бина 1. Вызов default конструктора 2. Запуск autowiring 3. Вызов postProcessBeforeInitialization интерфейса BeanPostProcessor 4. Вызов init-method 5. Вызов postProcessAfterInitialization Приложение запущено и готово к работе 8. Вызов destroy() 9. Вызов custom destroy-method Definition Pre-initialized Ready Destroyed
- 8. Области видимости(scopes) бинов ▪ singleton, prototype - Spring IoC ▪ request, session, global session, application - web-aware ApplicationContext
- 9. Слушатели ▪ @PostConstruct и @PreDestroy ▪ BeanPostProcessor.postProcessBeforeInitialization() и BeanPostProcessor.postProcessAfterInitialization() ▪ @EventListener
- 10. (AOP)– сквозная функциональность public void doing() { try { connection.setAutoCommit(false); // To do connection.commit(); } catch (SQLException e ) { connection.rollback(); } catch (Exception e ) { // } } @Transactional(rollbackFor = SQLException.class) public void doing() { // To do }
- 11. Spring AOP ▪ Aspect (аспект) ▪ Advice (cовет): before advice, after returning advice, after throwing advice, after (finally) advice, around advice ▪ Join point (точка соединения) ▪ Pointcut (Срез) ▪ Introduction (Внедрение)
- 12. Spring Proxy
- 13. Использованные источники ▪ http://docs.spring.io/spring/docs/current/spring-framework- reference/htmlsingle/ ▪ http://spring-projects.ru/guides/lessons/lesson-2/ ▪ https://habrahabr.ru/post/222579/ ▪ https://www.youtube.com/watch?v=U8MtGYa04v8