CORS使用Spring boot REST API的问题

@RestController
@CrossOrigin(origins = "http://example.com", methods = {RequestMethod.GET, RequestMethod.POST}, allowedHeaders = {"Content-Type"})
public class MyController {
    // Controller methods
}

spring.mvc.cors.allowed-origins=http://example.com
spring.mvc.cors.allowed-methods=GET,POST
spring.mvc.cors.allowed-headers=Content-Type

@Component
public class CorsFilter implements Filter {
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletResponse httpResponse = (HttpServletResponse) response;
        httpResponse.setHeader("Access-Control-Allow-Origin", "http://example.com");
        httpResponse.setHeader("Access-Control-Allow-Methods", "GET,POST");
        httpResponse.setHeader("Access-Control-Allow-Headers", "Content-Type");
        chain.doFilter(request, response);
    }
}

@Configuration
public class AppConfig {
    @Bean
    public FilterRegistrationBean<CorsFilter> corsFilterRegistrationBean() {
        FilterRegistrationBean<CorsFilter> registrationBean = new FilterRegistrationBean<>();
        registrationBean.setFilter(new CorsFilter());
        registrationBean.addUrlPatterns("/*");
        return registrationBean;
    }
}