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1 添加依赖
dependencies {
implementation('org.springframework.cloud:spring-cloud-starter-netflix-eureka-client')
implementation('org.springframework.cloud:spring-cloud-starter-netflix-zuul')
testImplementation('org.springframework.boot:spring-boot-starter-test')
implementation('com.marcosbarbero.cloud:spring-cloud-zuul-ratelimit:1.3.2.RELEASE')
}2 添加yml
server: port: 8300 spring: application: name: microservice-gateway-zuul eureka: client: register-with-eureka: true fetch-registry: true service-url: defaultZone: http://localhost:6761/eureka instance: ip-address: true zuul: routes: users: path: /lind/** #以lind开头的路径被重定向到lind服务 serviceId: lind add-host-header: true #显示真实的http头 retryable: false #关闭Hystrix的重试功能 ratelimit: enabled: true # repository: redis behind-proxy: true policies: users: limit: 5 #限流，每分钟请求5次 refresh-interval: 60 type: - user - origin - url # url类型的限流就是通过请求路径区分 # origin是通过客户端IP地址区分 # user是通过授权用户进行区分，也包括匿名用户
3 添加实现代码
http拦截器，获取用户ID，为子服务进行传递
public class PreRequestLogFilter extends ZuulFilter {
private static final Logger logger = LoggerFactory.getLogger(PreRequestLogFilter.class);
private final RateLimiter rateLimiter = RateLimiter.create(1000.0);
@Override
public Object run() {
try {
RequestContext currentContext = RequestContext.getCurrentContext();
HttpServletResponse response = currentContext.getResponse();
HttpServletRequest reqeust = currentContext.getRequest();
currentContext.addZuulRequestHeader("userId","123");//向子系统http头写数据
currentContext.addZuulRequestHeader("userName","test");
PreRequestLogFilter.logger.info(
String.format("send %s request to %s",
reqeust.getMethod(),
reqeust.getRequestURL().toString()));
if (!rateLimiter.tryAcquire()) {
HttpStatus httpStatus = HttpStatus.TOO_MANY_REQUESTS;
response.setContentType(MediaType.TEXT_PLAIN_VALUE);
response.setStatus(httpStatus.value());
response.getWriter().append(httpStatus.getReasonPhrase());
currentContext.setSendZuulResponse(false);
throw new ZuulException(
httpStatus.getReasonPhrase(),
httpStatus.value(),
httpStatus.getReasonPhrase()
);
}
} catch (java.lang.Exception e) {
ReflectionUtils.rethrowRuntimeException(e);
}
return null;
}
@Override
public boolean shouldFilter() {
// 判断是否需要过滤
return true;
}
@Override
public String filterType() {
return FilterConstants.PRE_TYPE;
}
@Override
public int filterOrder() {
return Ordered.HIGHEST_PRECEDENCE;
}
}在主程中注入这个过滤器
@Bean
public PreRequestLogFilter preRequestLogFilter() {
return new PreRequestLogFilter();
}看完上述内容是否对您有帮助呢？如果还想对相关知识有进一步的了解或阅读更多相关文章，请关注创新互联行业资讯频道，感谢您对创新互联的支持。
