Spring Cloud入门-Sentinel实现服务限流、熔断与降级(Hoxton版本)

import com.alibaba.csp.sentinel.adapter.spring.webmvc.SentinelMvcInterceptor;
import com.alibaba.csp.sentinel.annotation.aspectj.SentinelResourceAspect;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
@Configuration
public class SentinelConfig {
 
    @Bean
    public SentinelResourceAspect sentinelResourceAspect() {
        return new SentinelResourceAspect();
    }
 
    @Bean
    public WebMvcConfigurer webMvcConfigurer() {
        return new WebMvcConfigurer() {
            @Override
            public void addInterceptors(InterceptorRegistry registry) {
                registry.addInterceptor(sentinelMvcInterceptor()).addPathPatterns("/**");
            }
        };
    }
 
    @Bean
    public SentinelMvcInterceptor sentinelMvcInterceptor() {
        return new SentinelMvcInterceptor();
    }
}

这段代码定义了一个配置类SentinelConfig，其中创建了SentinelResourceAspect和SentinelMvcInterceptor的Bean，以便于在Spring Cloud应用中启用Sentinel对Spring MVC的支持。同时，通过实现WebMvcConfigurer接口，将Sentinel的拦截器注册到所有路径上，以便对所有API接口进行流量控制和资源保护。