Spring Cloud Gateway聚合Swagger文檔

版本

• SpringBoot:2.2.5.RELEASE
• SpringCloud:Hoxton.SR3
• Swagger:2.9.2

食用

0：引入swagger依賴

在微服務及網關中引入swagger pom依賴

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

1：微服務中引入swagger

微服務中配置swagger

@Configuration
@EnableSwagger2
public class SwaggerConfig {

    @Bean
    public Docket docket() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.withClassAnnotation(Api.class))
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("ORDER-SWAGGER")
                .description("訂單服務SWAGGER文檔")
                .version("1.0")
                .contact(new Contact("liu", "https://www.liu.com", "[email protected]"))
                .build();
    }
}

訪問微服務中的swagger（ip,port爲微服務的ip地址和端口號）

http://ip:port/swagger-ui.html

2：網關中聚合swagger

配置網關中的swagger

SwaggerConfig

@Configuration
public class SwaggerConfig {

    @Bean
    public SecurityConfiguration securityConfiguration() {
        return SecurityConfigurationBuilder.builder().build();
    }

    @Bean
    public UiConfiguration uiConfiguration() {
        return UiConfigurationBuilder.builder().build();
    }

}

SwaggerHandler

@RestController
@RequestMapping("/swagger-resources")
public class SwaggerHandler {

    private final SecurityConfiguration securityConfiguration;
    private final UiConfiguration uiConfiguration;
    private final SwaggerResourcesProvider swaggerResources;

    @Autowired
    public SwaggerHandler(SwaggerResourcesProvider swaggerResources, SecurityConfiguration securityConfiguration, UiConfiguration uiConfiguration) {
        this.swaggerResources = swaggerResources;
        this.securityConfiguration = securityConfiguration;
        this.uiConfiguration = uiConfiguration;
    }

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

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

    @GetMapping
    public Mono<ResponseEntity<List<SwaggerResource>>> swaggerResources() {
        return Mono.just((new ResponseEntity<>(swaggerResources.get(), HttpStatus.OK)));
    }

}

SwaggerProvider

@Primary
@Component
@AllArgsConstructor
public class SwaggerProvider implements SwaggerResourcesProvider {

    public static final String API_URI = "/v2/api-docs";
    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(routeDefinition -> routeDefinition.getPredicates().stream()
                        .filter(predicateDefinition -> ("Path").equalsIgnoreCase(predicateDefinition.getName()))
                        .forEach(predicateDefinition -> resources
                                .add(swaggerResource(routeDefinition.getId(), predicateDefinition.getArgs()
                                        .get(NameUtils.GENERATED_NAME_PREFIX + "0").replace("/**", API_URI)))));
        return resources;
    }

    private SwaggerResource swaggerResource(String name, String url) {
        SwaggerResource swaggerResource = new SwaggerResource();
        swaggerResource.setName(name);
        swaggerResource.setUrl(url);
        swaggerResource.setSwaggerVersion("2.0");
        return swaggerResource;
    }
}

訪問網關聚合的swagger（ip,port爲網關的ip地址和端口號）

http://ip:port/swagger-ui.html

3：結果

4：樣例

Gitee：https://gitee.com/liujiazhongg_admin/gateway-swagger-example