SpringBoot获取HttpServletRequest的3种方式总结

@RestController
public class DemoController { 
    @RequestMapping("/demo")
    public void demo(HttpServletRequest request) {        
        System.out.println(request.getParameter("hello"));
    }
}

@Slf4j
@RequestMapping(path = "/request")
@RestController
public class DemoRequestController {
    @Resource
    private HttpServletRequest request1;
    @RequestMapping(path = "/demo")
    public String demo(HttpServletRequest request2) {
        log.info("request1: {}", request1.getClass());
        log.info("request2: {}", request2.getClass());
        return "Hello, world!";
    }
}

public class BaseController {   
   @Autowired 
   protected HttpServletRequest request;
}

@Slf4j
@RequestMapping(path = "/request")
@RestController
public class DemoRequestController {
    @Resource
    private HttpServletRequest request1;
    @RequestMapping(path = "/demo")
    public String demo(HttpServletRequest request2) {
        HttpServletRequest request3 = ((ServletRequestAttributes) (RequestContextHolder.currentRequestAttributes())).getRequest();
        log.info("request1: {}", request1.getClass());
        log.info("request2: {}", request2.getClass());
        log.info("request3: {}", request3.getClass());
        return "Hello, world!";
    }
}