我们是否在 Spring 中提供了拦截器链接？

Question

假设我们有两个拦截器 "LogInterceptor" 和 "AuthInterceptor"。第一个拦截器记录传入的请求，第二个拦截器对其进行身份验证。目的：链接 LogIntercptor 和 AuthInterceptor。首先，我希望调用 logInterceptor，然后执行 AuthInterceptor。注意：我知道 "redirect" 并返回 false（请不要建议那个）

---------------------Log Interceptor---------------------------------------







    //First Inteceptor

    @Component
    public class LogInterceptor extends HandlerInterceptorAdapter
    {
        private final Logger Logger = 
        LoggerFactory.getLogger(this.getClass());
        @Override
        public boolean preHandle(HttpServletRequest request, 
         HttpServletResponse response, Object handler) throws Exception {

            //take action base on incoming IP
            long startTime = System.currentTimeMillis();
            request.setAttribute("startTime",startTime); 
            if(request.getRemoteAddr().startsWith("192")) 
                 {
                response.sendRedirect("/auth-failed"); //redirect to default
                return false;
            }
            return  true;

        }

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

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



        }
      }

//第二个拦截器"Code is however not complete, I am just seeeking how this can be achieved." class 授权拦截器 {

Answer 1

您只需要确保在配置 InterceptorRegistry 时将 Interceptor 添加到您想要的顺序即可：

@EnableWebMvc
@Configuration
public class WebConfig implements WebMvcConfigurer{

    @Autowired
    private LogInterceptor logInterceptor;

    @Autowired
    private AuthInterceptor authInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(logInterceptor);
        registry.addInterceptor(authInterceptor);
    }

}

如果你有多个 WebMvcConfigurer ，你可以简单地使用 @Order 来控制 WebMvcConfigurer 的执行顺序（较低的值具有较高的优先级）：

@EnableWebMvc
@Configuration
@Order(1)
public class FooWebConfig implements WebMvcConfigurer{

}

@EnableWebMvc
@Configuration
@Order(2)
public class BarWebConfig implements WebMvcConfigurer{

}

我们是否在 Spring 中提供了拦截器链接？

Do we have provision for interceptor chaining in Spring?

spring

spring-security

interceptor