java - How to write tag in my spring project?

Question

I want to write my tag (extends TagSupport) in my spring framework. In my tag class, will use some service which should auto inject by spring. But I always get null, seems spring can't inject service instance in my tag class.

The code is like the following:

public class FetchTagNameTag extends TagSupport {

   @Autowired
   private TaskService taskService;
   ...

taskService is always null.

How can I resolve this? Thanks.

Answer 1

Have a try by utilizing RequestContextAwareTag. It will offer you methods to obtain RequestContext and then WebApplicaitonContext. Have a look at here.