Spring @PostConstruct vs. init-method attribute

by

No practically I don’t think there is any difference but there are priorities in the way they work. @PostConstruct, init-method are BeanPostProcessors.

  1. @PostConstruct is a JSR-250 annotation while init-method is Spring’s way of having an initializing method.
  2. If you have a @PostConstruct method, this will be called first before the initializing methods are called.
  3. If your bean implements InitializingBean and overrides afterPropertiesSet , first @PostConstruct is called, then the afterPropertiesSet and then init-method.

For more info you can check Spring’s reference documentation.

Before JSR 250 specs , usage of init-method in xml was preferred way , as it decouples java classes (beans) from any spring specific classes/annotations.So if you are building a library that does not need to be dependent on spring infrastructure beans then use of init-method was preferred.During creation method u can specify the method that needs to be called as initialization method.

Now with introduction of JSR 250 specs in Java EE and spring support of these annotations , dependency on spring framework has been reduced to a certain extent.

But i have to admit that addition of these things increase the readability of code.So there are pros and cons both approaches.

More Related Contents:

  1. What is the difference between ApplicationContext and WebApplicationContext in Spring MVC?
  2. How does spring.jpa.hibernate.ddl-auto property exactly work in Spring?
  3. Why does self-invocation not work for Spring proxies (e.g. with AOP)?
  4. Spring Resttemplate exception handling
  5. Spring Boot – How to get the running port
  6. create two method for same url pattern with different arguments
  7. Fire and forget with reactor
  8. Spring Boot CORS filter – CORS preflight channel did not succeed
  9. Where should “@Transactional” be placed Service Layer or DAO
  10. Splitting applicationContext to multiple files
  11. Spring Data – ignore parameter if it has a null value
  12. Spring MVC – Why not able to use @RequestBody and @RequestParam together
  13. How exactly does the Spring BeanPostProcessor work?
  14. @Value not resolved when using @PropertySource annotation. How to configure PropertySourcesPlaceholderConfigurer?
  15. implement dynamically datasource in spring data jpa
  16. A ‘simple’ way to implement Swagger in a Spring MVC application
  17. spring autowiring with unique beans: Spring expected single matching bean but found 2
  18. How to conditionally declare Bean when multiple profiles are not active?
  19. spring integration + cron + quartz in cluster?
  20. Reuse spring application context across junit test classes
  21. Spring Security and @Async (Authenticated Users mixed up)
  22. Spring @Transactional with a transaction across multiple data sources
  23. Spring Security: mapping OAuth2 claims with roles to secure Resource Server endpoints
  24. How to parse gzip encoded response with RestTemplate in Spring-Web
  25. How to use multiple login pages one for admin and the other one for user
  26. Another unnamed CacheManager already exists in the same VM (ehCache 2.5)
  27. Exclude subpackages from Spring autowiring?
  28. reading a dynamic property list into a spring managed bean
  29. Spring: register advice programmatically at runtime
  30. Spring Boot JSF Integration

Leave a Comment