Interceptor not getting initialized and invoked with SpringBoot

Found the fix. Had to use the ant like url pattern to match the requests:

registry.addInterceptor(dgvProxySvcRequestInterceptor()).addPathPatterns("/**");

My original configuration was all good; did not require any change except for the above url pattern.

@Configuration
@EnableWebMvc 
public class AppConfig extends WebMvcConfigurerAdapter  {  
    // @Bean resolvers , etc

    @Override
    public void addInterceptors(InterceptorRegistry registry) {

        registry.addInterceptor(new DGVProxySvcRequestInterceptor()).addPathPatterns("/controller/action/*");
    }
} 

I had same issue. @SpringBootApplication scans all the component from the current package only. In order to scan other package, we need to specify package in @ComponentScan. For Example

package com.main;
@SpringBootApplication
public class Application {
     //Code goes here.
}

Now i want interceptor to be register, which is neither in com.main not com.main.**, its available in com.test package.

package com.test.interceptor
@Configuration
public class InterceptorConfig extends WebMvcConfigurerAdapter {
    @Autowired
    HeaderInterceptor headerInterceptor;

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

In above case, Spring Boot won't register HeaderInterceptor in context. In order to register, we must explicitly scan that package.

package com.main;
@SpringBootApplication
@ComponentScan("com.*") //Which takes care all the package which starts with com.
@ComponentScan({"com.main.*","com.test.*"}) //For specific packages
public class Application {
     //Code goes here.
}