创建通过方法初始化的Spring bean List

Question

I have the method:

public List<IEntity> wordsCollection()

I need to create the bean with that list. This method ask DB for data and gets it out. When I used method call - I do call several times. But I need the bean with that value. How can I do this?

I need something like this:

<util:list id ="wc">
   value = collections.wordsCollection
</util:list>

Answer 1

You can use @PostConstruct to load the data in your spring bean

The PostConstruct annotation is used on a method that needs to be executed after dependency injection is done to perform any initialization.

public class SomeService{

  @PostConstruct
  public void loadCollection() throws Exception {
      wordsCollection();   
 }
}

Inject your dao in the spring bean and call the required method in the postconstruct method.

Answer 2

you can store the retrived list in the session and reuse it among spring controllers when required. Otherwise you can use Spring's expression language(SpEL).