Spring MVC如何为控制器方法提供注入

Question

Spring MVC controller methods accespt different parameters that are injected before the method is invoked. Like HttpServletRequest , HttpServletResponse , java.security.Principal , etc.

@RequestMapping("/test")
public String test(HttpServletRequest req, Principal user){}

How can I declare something that can be injected in a controlelr method?

@RequestMapping("/test")
public String test(MyCustomInjectable myInjectable){}

More on the specific case:

I want to parse the HttpServletRequest in some servlet filter and construct an object that will be used in the controller method. More precisely I will parse a JWT token and access the claims.

Answer 1

可以选择创建自定义HandlerMethodArgumentResolver 。