<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.1.11.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.bjsxt</groupId><artifactId>zuul-gateway-filter</artifactId><version>0.0.1-SNAPSHOT</version><name>zuul-gateway-filter</name><description>Demo project for Spring Boot</description><properties><java.version>1.8</java.version><spring-cloud.version>Greenwich.SR4</spring-cloud.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-client</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-zuul</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies><dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

package com.bjsxt;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;@SpringBootApplication
@EnableZuulProxy
public class ZuulGatewayFilterApplication {public static void main(String[] args) {SpringApplication.run(ZuulGatewayFilterApplication.class, args);}}

spring.application.name=zuul-gateway-filter
server.port=9040#设置服务注册中心地址，指向另一个注册中心
eureka.client.service-url.defaultZone=http://admin:123456@eureka1:8761/eureka/,http://admin:123456@eureka2:8761/eureka/

package com.bjsxt.filter;import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.context.RequestContext;
import com.netflix.zuul.exception.ZuulException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;import javax.servlet.http.HttpServletRequest;@Component
public class LogFilter extends ZuulFilter {private static final Logger logger=LoggerFactory.getLogger(LogFilter.class);/*** 过滤内容，在run方法编写过滤逻辑* @return* @throws ZuulException*/@Overridepublic Object run() throws ZuulException {//获取请求上下文RequestContext rc = RequestContext.getCurrentContext();HttpServletRequest request = rc.getRequest();logger.info("LogFilter......method={},url={}",request.getMethod(),request.getRequestURL().toString());return null;}/*** 是否开启过滤器，默认为false不开启* @return*/@Overridepublic boolean shouldFilter() {return true;}/*** 过滤器的执行顺序：通过整数表示顺序，数值越小，优先级越高。* @return*/@Overridepublic int filterOrder() {return 0;}/***过滤器类型：通过过滤器类型决定了过滤器执行的时间* @return**/@Overridepublic String filterType() {return "pre";//过滤器在路由规则之前执行}
}