java - 在Interceptor中访问Spring的RequestEntity

Question

在我的 Spring Boot (2.1.4) 应用程序中，我需要访问拦截器的 preHandle 方法中的 RequestEntity。不幸的是，我似乎无法获得它的实例。

我的代码基本上是这样的:

@RestController
@RequestMapping("/")
public class MyController
{
    @GetMapping("/")
    @ResponseBody
    public ResponseEntity getSomething()
    // public ResponseEntity getSomething(RequestEntity<String> requestEntity) // doesn't work either
    {
        return new ResponseEntity<String>("test", HttpStatus.OK);
    }
}

和这样的拦截器:

public class MyInterceptor extends HandlerInterceptorAdapter
{
    // doesn't work:
    // @Autowired RequestEntity<String> requestEntity;

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception exception) throws Exception {}

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {}

    @Override
    public boolean preHandle(HttpServletRequest requestServlet, HttpServletResponse responseServlet, Object handler) throws Exception
    {

        // ACCESS TO org.springframework.http.RequestEntity NEEDED HERE!

        // NULL POINTER EXCEPTION!
        requestEntity.getHeaders();

        return true;
    }
}

无论我是否将RequestEntity注入(inject)到 Controller 中，我似乎都无法访问(传入)请求的RequestEntity。我尝试将其@Autowire放入拦截器中，但无济于事。

有什么办法可以访问这个吗？

Answer 1

您可以让请求实体在 preHandle 方法中执行类似的操作

 HttpEntity requestEntity = ((HttpEntityEnclosingRequest) request).getEntity();

希望这对你有帮助