springcloud gateway聚合swagger2的方法示例

/**

  * 聚合各个服务的swagger接口

  *

  * @author ksyzz

  * @since <pre>2019/04/09</pre>

  */

@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<>();

     // 由于我的网关采用的是负载均衡的方式，因此我需要拿到所有应用的serviceid

     // 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nacos上

     set<string> dealed = new hashset<>();

     routehosts.foreach(instance -> {

       // 拼接url，样式为/serviceid/v2/api-info，当网关调用这个接口时，会自动通过负载均衡寻找对应的主机

       string url = "/" + instance + swagger2url;

       if (!dealed.contains(url)) {

         dealed.add(url);

         swaggerresource swaggerresource = new swaggerresource();

         swaggerresource.seturl(url);

         swaggerresource.setname(instance);

         resources.add(swaggerresource);

       }

     });

     return resources;

   }

}

/**

   * swagger聚合接口，三个接口都是swagger-ui.html需要访问的接口

   *

   * @author ksyzz

   * @since <pre>2019/04/09</pre>

   */

  @restcontroller

  @requestmapping ( "/swagger-resources" )

  public class swaggerresourcecontroller {

    private myswaggerresourceprovider swaggerresourceprovider;

    @autowired

    public swaggerresourcecontroller(myswaggerresourceprovider swaggerresourceprovider) {

      this .swaggerresourceprovider = swaggerresourceprovider;

    }

    @requestmapping (value = "/configuration/security" )

    public responseentity<securityconfiguration> securityconfiguration() {

      return new responseentity<>(securityconfigurationbuilder.builder().build(), httpstatus.ok);

    }

    @requestmapping (value = "/configuration/ui" )

    public responseentity<uiconfiguration> uiconfiguration() {

      return new responseentity<>(uiconfigurationbuilder.builder().build(), httpstatus.ok);

    }

    @requestmapping

    public responseentity<list<swaggerresource>> swaggerresources() {

      return new responseentity<>(swaggerresourceprovider.get(), httpstatus.ok);

    }

  }