如何拦截spring REST控制器中的所有请求？

Question

我有一堆控制器，比如：

@RestController
public class AreaController {
    @RequestMapping(value = "/area", method = RequestMethod.GET)
    public @ResponseBody ResponseEntity<Area> get(@RequestParam(value = "id", required = true) Serializable id) { ... }
}

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.test.app")
public class AppConfig extends WebMvcConfigurerAdapter {

    @Bean
    public ControllerInterceptor getControllerInterceptor() {
        ControllerInterceptor c = new ControllerInterceptor();
        return c;
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(getControllerInterceptor());
        super.addInterceptors(registry);
    }

}

Answer 1

您的Interceptor类ControllerInterceptor不是应用程序上下文托管bean。确保将@component注释放在ControllerInterceptor上，并将其包添加到@componentscan中。因此，假设您的ControllerInterceptor驻留在包com.xyz中。拦截器如下所示：

package com.xyz.interceptors;  //this is your package

@Component //put this annotation here
public class ControllerInterceptor extends HandlerInterceptorAdapter{
 // code here
}

而您的AppConfig变为：

@ComponentScan(basePackages = { "com.test.app", "com.xyz.interceptors" })
public class AppConfig extends WebMvcConfigurerAdapter {
// ...
}