API文档

# API文档

为了方便前端的开发人员，我们自动生成一个API文档，方便前端开发和测试。

通常我们使用Swagger2，但是UI简单，也可以结合第三方的UI-knife4j

https://doc.xiaominfo.com/

# gateway依赖

<dependency>
    <groupId>com.github.xiaoymin</groupId>
    <artifactId>knife4j-spring-boot-starter</artifactId>
    <version>3.0.3</version>
</dependency>

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文档入口

@RestController
public class SwaggerApi {

    @Autowired(required = false)
    private SecurityConfiguration securityConfiguration;

    @Autowired(required = false)
    private UiConfiguration uiConfiguration;

    private final SwaggerResourcesProvider swaggerResources;

    @Autowired
    public SwaggerApi(SwaggerResourcesProvider swaggerResources) {
        this.swaggerResources = swaggerResources;
    }


    @GetMapping("/swagger-resources/configuration/security")
    public Mono<ResponseEntity<SecurityConfiguration>> securityConfiguration() {
        return Mono.just(new ResponseEntity<>(
                Optional.ofNullable(securityConfiguration).orElse(SecurityConfigurationBuilder.builder().build()), HttpStatus.OK));
    }

    @GetMapping("/swagger-resources/configuration/ui")
    public Mono<ResponseEntity<UiConfiguration>> uiConfiguration() {
        return Mono.just(new ResponseEntity<>(
                Optional.ofNullable(uiConfiguration).orElse(UiConfigurationBuilder.builder().build()), HttpStatus.OK));
    }

    @GetMapping("/swagger-resources")
    public Mono<ResponseEntity> swaggerResources() {
        return Mono.just((new ResponseEntity<>(swaggerResources.get(), HttpStatus.OK)));
    }
}

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资源处理器

@Slf4j
@Component
@Primary
@AllArgsConstructor
public class SwaggerResourceConfig implements SwaggerResourcesProvider {

    private final RouteLocator routeLocator;
    private final GatewayProperties gatewayProperties;


    @Override
    public List<SwaggerResource> get() {
        List<SwaggerResource> resources = new ArrayList<>();
        List<String> routes = new ArrayList<>();
        routeLocator.getRoutes().subscribe(route -> routes.add(route.getId()));
        gatewayProperties.getRoutes().stream().filter(routeDefinition -> routes.contains(routeDefinition.getId())).forEach(route -> {
            route.getPredicates().stream()
                    .filter(predicateDefinition -> ("Path").equalsIgnoreCase(predicateDefinition.getName()))
                    .forEach(predicateDefinition -> resources.add(swaggerResource(route.getId(),
                            predicateDefinition.getArgs().get(NameUtils.GENERATED_NAME_PREFIX + "0")
                                    .replace("**", "v2/api-docs"))));
        });

        return resources;
    }

    private SwaggerResource swaggerResource(String name, String location) {
        log.info("name:{},location:{}",name,location);
        SwaggerResource swaggerResource = new SwaggerResource();
        swaggerResource.setName(name);
        swaggerResource.setLocation(location);
        swaggerResource.setSwaggerVersion("2.0");
        return swaggerResource;
    }
}

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# 其他模块依赖：

<!--swagger ui-->
<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger-ui</artifactId>
    <version>2.9.2</version>
</dependency>

<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger2</artifactId>
    <version>2.9.2</version>
</dependency>

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配置：

knife4j:
  # 开启增强配置
  enable: true
  # 是否生产环境 默认否;生产环境配置为true，将无法访问文档
  production: false
  basic:
    enable: false

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模块配置

@Configuration
@EnableSwagger2
public class SwaggerConfiguration {

    @Bean(value = "UCenter")
    @Order(value = 1)
    public Docket groupRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(groupApiInfo())
                .select().apis(RequestHandlerSelectors.basePackage("net.sunofbeach.uc.api"))
                .paths(PathSelectors.any()
                ).build();
    }

    private ApiInfo groupApiInfo() {
        return new ApiInfoBuilder()
                .title("阳光沙滩-摸鱼君")
                .description("统一用户中心模块")
                .termsOfServiceUrl("localhost")
                .licenseUrl("www.sunofbeach.net")
                .contact(new Contact("拉大锯", "", "sunofbeach@gmail.com"))
                .version("1.0").build();
    }

}

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以ucenter为例，一个模块开启和配置Swager2

访问路径：

ip:端口号/swagger.html
locahost:40100/swagger-ui.html

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编辑

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