Spring 提取Controller的HandlerInterceptor中的@RequestMapping注解和Method組成全路徑

Question

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我有以下 Controller

@RestController
@RequestMapping("/v4/base")
public class ExampleController {
   
    @PostMapping(value = "/users/{userId}")
    public ResponseEntity<List<ExampleRequest>> test(@RequestHeader HttpHeaders headers,
            @PathVariable String orgId, @RequestBody List<ExampleRequest> request) {
        ...
    }
}

我想從攔截器中提取這個 url

/v4/base/users/{userId}

通過這種方法，

public class MyInterceptor  implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
            throws IOException, ServletException {

            RequestMapping requestMapping = method.getMethodAnnotation(RequestMapping.class);
            
            if (requestMapping != null) {
                String[] path = requestMapping.path();  
            }

    }

}

它在上面的路徑 string[] 變量中給了我這個：

/users/{userId}

如何獲取完整的 spring 請求映射路徑？

我不想要看起來像這樣的 servlet 路徑：/v4/base/users/23232

Answer 1

找到了解決方案。 我們可以像這樣提取 controller 注釋。

Class controller = method.getBeanType();

if (controller.isAnnotationPresent(RequestMapping.class)) {
    RequestMapping controllerMapping = (RequestMapping) controller.getAnnotation(RequestMapping.class);
    if (controllerMapping.value() != null && controllerMapping.value().length > 0) {
        controllerPath = controllerMapping.value()[0];
    }
}

然后將其作為方法注釋的前綴。

Answer 2

這樣的事情將按照您的代碼工作。

public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
    if (handler instanceof HandlerMethod) {
        HandlerMethod handlerMethod = (HandlerMethod) handler;
        RequestMapping methodAnnotation = handlerMethod.getMethodAnnotation(RequestMapping.class);
        RequestMapping classAnnotation = handlerMethod.getBeanType().getAnnotation(RequestMapping.class);
        if (methodAnnotation != null && classAnnotation != null) {
            String[] classValues = classAnnotation.value();
            String[] methodValues = methodAnnotation.value();
            String fullPath = classValues[0] + methodValues[0];
            // do something here`enter code here`
        }
    }
    return true;
}