content: package org.jeecg.handler;
  
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.beans.factory.annotation.Value;
  import org.springframework.cloud.gateway.route.RouteLocator;
  import org.springframework.stereotype.Component;
  import springfox.documentation.swagger.web.SwaggerResource;
  import springfox.documentation.swagger.web.SwaggerResourcesProvider;
  
  import java.util.*;
  
  /**
   * 聚合各个服务的swagger接口
   */
  @Component
  public class MySwaggerResourceProvider implements SwaggerResourcesProvider {
      /**
       * swagger2默认的url后缀
       */
      private static final String SWAGGER2URL = "/v2/api-docs";
  
      /**
       * 网关路由
       */
      private final RouteLocator routeLocator;
  
      /**
       * 网关应用名称
       */
      @Value("${spring.application.name}")
      private String self;
  
      @Autowired
      public MySwaggerResourceProvider(RouteLocator routeLocator) {
          this.routeLocator = routeLocator;
      }
  
      @Override
      public List<SwaggerResource> get() {
          List<SwaggerResource> resources = new ArrayList<>();
          List<String> routeHosts = new ArrayList<>();
          // 获取所有可用的host：serviceId
          routeLocator.getRoutes().filter(route -> route.getUri().getHost() != null)
                  .filter(route -> !self.equals(route.getUri().getHost()))
                  .subscribe(route -> routeHosts.add(route.getUri().getHost()));
  
          // 记录已经添加过的server，存在同一个应用注册了多个服务在eureka上
          Set<String> dealed = new HashSet<>();
          routeHosts.forEach(instance -> {
              // 拼接url
              String url = "/" + instance.toLowerCase() + SWAGGER2URL;
              if (!dealed.contains(url)) {
                  dealed.add(url);
                  SwaggerResource swaggerResource = new SwaggerResource();
                  swaggerResource.setUrl(url);
                  swaggerResource.setName(instance);
                  //Swagger排除监控
                  if(instance.indexOf("jeecg-cloud-monitor")==-1){
                      resources.add(swaggerResource);
                  }
              }
          });
          return resources;
      }
  }