[JAVA] Get contextual information such as HttpServletRequest in Jersey

Implementing RESTFul API in Jersey + Spring Framework, I needed the following information.

• HttpServletRequest
• HttpServletResponse

I checked the method, so I wrote it down.

Environment etc.

Acquisition method

Just declare it in a member variable with @Context.

@Service
@Path("/my")
class MyResourceApi{
    @Context
    HttpServletRequest httpServletRequest;

    @Context
    HttpServletResponse httpServletResponse;
}

It seems that all other context-related information can be obtained in the same way.

A little more detail

This seems to be due to the annotation-based DI function HK2 that Jersey has built in from version 2 rather than the function of Jersey itself.

For more details, here.

HK2 https://javaee.github.io/hk2/introduction.html

Try the DI function (HK2) built into Jersey2 https://qiita.com/opengl-8080/items/9bdc98aa5269512bd70e