使用knife4j实现分布式swagger文档聚合

在项目开发过程中,接口文档的使用是在所难免的,但是在微服务场景下,多个服务之间的swagger是分散的,虽然swagger提供了微服务的聚合方式,配置过于繁琐,加之swagger本身的功能比较少,而且ui布局也比较蛋痛,此处推荐一款新框架用于增强swagger以及实现微服务接口文档的聚合

knife4j官方文档:https://doc.xiaominfo.com/docs/

此处使用文档中提供的Spring Cloud Gateway网关聚合 | Knife4j (xiaominfo.com)方式

依赖引入

在整个项目的父pom中

    <properties>
        <springdoc.version>2.0.2</springdoc.version>
        <knife4j.version>4.0.0</knife4j.version>
    </properties>
<dependencyManagement>
<!--            swagger-->
    <dependency>
        <groupId>org.springdoc</groupId>
        <artifactId>springdoc-openapi-starter-webmvc-api</artifactId>
        <version>${springdoc.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springdoc</groupId>
        <artifactId>springdoc-openapi-starter-webflux-api</artifactId>
        <version>${springdoc.version}</version>
    </dependency>
    <!--knife4j 分布式接口文档聚合-->
    <dependency>
        <groupId>com.github.xiaoymin</groupId>
        <artifactId>knife4j-gateway-spring-boot-starter</artifactId>
        <version>${knife4j.version}</version>
    </dependency>
</dependencyManagement>

gateway,因为gateway是基于webflux构建的因此需要导入的是webflux版本的swagger依赖

<dependency>
    <groupId>com.github.xiaoymin</groupId>
    <artifactId>knife4j-gateway-spring-boot-starter</artifactId>
</dependency>
<dependency>
    <groupId>org.springdoc</groupId>
    <artifactId>springdoc-openapi-starter-webflux-api</artifactId>
    <scope>provided</scope>
</dependency>

服务server

<dependency>
    <groupId>org.springdoc</groupId>
    <artifactId>springdoc-openapi-starter-webmvc-api</artifactId>
</dependency>

配置文件编写

服务server:

springdoc:
  swagger-ui:
    path: /swagger
    tags-sorter: alpha
    operations-sorter: alpha
  api-docs:
    path: /服务名称/api-docs

gateway:

gateway:
  discovery:
    locator:
      enabled: true
      #此处是配置服务的路由
  routes:
    #        XXX模块
    - id: XXX-server
      uri: lb://XXX-server
      predicates:
        - Path=/XXX/**
        
knife4j:
  # 聚合swagger文档
  gateway:
    enable: true
    routes:
    #此处需要与上面的配置对应
      - name: XXX服务
        url: /XXX/api-docs?group=default
        service-name: XXX-server
        order: 1