gateway配置swagger

要在gateway中配置Swagger，需要进行以下步骤：

1. 添加Swagger依赖项

在pom.xml文件中添加以下依赖项：

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-gateway</artifactId>
    <version>2.2.3.RELEASE</version>
</dependency>

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-gateway</artifactId>
    <version>2.2.3.RELEASE</version>
    <scope>test</scope>
</dependency>

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-gateway</artifactId>
    <version>2.2.3.RELEASE</version>
    <type>test-jar</type>
    <scope>test</scope>
</dependency>

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-gateway</artifactId>
    <version>2.2.3.RELEASE</version>
    <type>test-jar</type>
    <classifier>tests</classifier>
    <scope>test</scope>
</dependency>

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-gateway</artifactId>
    <version>2.2.3.RELEASE</version>
    <classifier>tests</classifier>
    <scope>test</scope>
</dependency>

2. 创建Swagger配置类

创建一个Swagger配置类，并添加以下内容：

@Configuration
@EnableSwagger2
public class SwaggerConfig {

    @Bean
    public Docket api() {
        return new Docket(DocumentationType.SWAGGER_2)
                .select()
                .apis(RequestHandlerSelectors.any())
                .paths(PathSelectors.any())
                .build();
    }

}

3. 注册Swagger路由

在application.yml文件中添加以下内容，以将Swagger路由到相应的URL：

spring:
  cloud:
    gateway:
      routes:
        - id: swagger
          uri: lb://swagger-ui
          predicates:
            - Path=/swagger/**

4. 启动服务

启动服务并访问"http://localhost:8080/swagger-ui.html"，即可查看Swagger API文档。

希望这些步骤可以帮助你配置Swagger到gateway中。