<dependency>
<groupId>io.springfoxgroupId>
<artifactId>springfox-boot-starterartifactId>
<version>3.0.0version>
dependency>
@EnableOpenApi
package com.admin.config;
import io.swagger.annotations.ApiOperation;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
/**
* @author zr
* @date 2023/4/10 14:23
*/
@Configuration
public class Swagger3Config {
@Bean
public Docket createRestApi() {
return new Docket(DocumentationType.OAS_30)
.apiInfo(apiInfo())
.select()
.apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class))
.paths(PathSelectors.any())
.build();
}
private ApiInfo apiInfo() {
return new ApiInfoBuilder()
.title("Swagger3接口文档")
.description("更多请咨询服务开发者Ray。")
.contact(new Contact("zr", "http://www.baidu.com", "[email protected]"))
.version("1.0")
.build();
}
}
因为我是微服务所以端口号后面加上服务名admin-service
http://localhost:8090/admin-service/swagger-ui/index.html#/
效果如下
在原来单节点模块下引入knife4j-micro依赖
knife4j-micro-spring-boot-starter是不带swagger依赖的
knife4j-spring-boot-starter是带swagger依赖的
<dependency>
<groupId>com.github.xiaoymingroupId>
<artifactId>knife4j-micro-spring-boot-starterartifactId>
<version>3.0.3version>
dependency>
为了展示knife4j的聚合效果所以我们至少要有两个模块,新增一个模块按照搭建单服务swagger
再次整合一个服务(记得新服务依赖也需要引入knife4j-micro依赖)
最后我们搭建网关服务,作为微服务API文档的的统一入口,聚合所有微服务的API文档。
<dependency>
<groupId>com.github.xiaoymingroupId>
<artifactId>knife4j-spring-boot-starterartifactId>
<version>3.0.3version>
dependency>
在
application.yml
这添加相关配置,配置一下Nacos注册中心,用户服务和订单服务的路由即可;
server:
port: 8088
spring:
application:
name: api-gateway
cloud:
gateway:
routes:
- id: admin_route #路由唯一标识
uri: lb://admin-service #需要转发的地址 http://localhost:8020 lb:使用nacos本地负载均衡策略
- id: non_route #路由唯一标识
uri: lb://non-service #需要转发的地址 http://localhost:8020 lb:使用nacos本地负载均衡策略
- id: log_route #路由唯一标识
uri: lb://logger-service #需要转发的地址 http://localhost:8020 lb:使用nacos本地负载均衡策略
globalcors: #跨域配置
cors-configurations:
'[/**]': #允许跨域访问的资源
allowedOrigins: "*" #跨域允许来源
allowedMethods: # 允许的请求
- GET
- POST
- OPTIONS
nacos:
discovery:
server-addr: 127.0.0.1:8848
username: nacos
password: nacos
在网关上添加Swagger资源配置,用于聚合其他微服务中Swagger的
api-docs
访问路径;
package com.gateway.config;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.gateway.config.GatewayProperties;
import org.springframework.cloud.gateway.route.RouteLocator;
import org.springframework.cloud.gateway.support.NameUtils;
import org.springframework.context.annotation.Primary;
import org.springframework.stereotype.Component;
import springfox.documentation.swagger.web.SwaggerResource;
import springfox.documentation.swagger.web.SwaggerResourcesProvider;
import java.util.ArrayList;
import java.util.List;
/**
* @author zr
* @date 2023/4/10 15:02
*/
@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<>();
//获取所有路由的ID
routeLocator.getRoutes().subscribe(route -> routes.add(route.getId()));
//过滤出配置文件中定义的路由->过滤出Path Route Predicate->根据路径拼接成api-docs路径->生成SwaggerResource
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;
}
}
什么是Swagger的
api-docs
访问路径?该路径会返回JSON格式数据,Swagger渲染API文档页面的所有数据就是来源于此,比如我们的用户服务会返回如下信息,访问地址:http://localhost:8088/api/logger-service/v2/api-docs
自定义Swagger各个配置的节点,简单来说就是自定义Swagger内部的各个获取数据的接口;
package com.gateway.handler;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import reactor.core.publisher.Mono;
import springfox.documentation.swagger.web.*;
import java.util.Optional;
/**
* @author zr
* @date 2023/4/10 15:04
*/
@RestController
public class SwaggerHandler {
@Autowired(required = false)
private SecurityConfiguration securityConfiguration;
@Autowired(required = false)
private UiConfiguration uiConfiguration;
private final SwaggerResourcesProvider swaggerResources;
@Autowired
public SwaggerHandler(SwaggerResourcesProvider swaggerResources) {
this.swaggerResources = swaggerResources;
}
/**
* Swagger安全配置,支持oauth和apiKey设置
*/
@GetMapping("/swagger-resources/configuration/security")
public Mono<ResponseEntity<SecurityConfiguration>> securityConfiguration() {
return Mono.just(new ResponseEntity<>(
Optional.ofNullable(securityConfiguration).orElse(SecurityConfigurationBuilder.builder().build()), HttpStatus.OK));
}
/**
* Swagger UI配置
*/
@GetMapping("/swagger-resources/configuration/ui")
public Mono<ResponseEntity<UiConfiguration>> uiConfiguration() {
return Mono.just(new ResponseEntity<>(
Optional.ofNullable(uiConfiguration).orElse(UiConfigurationBuilder.builder().build()), HttpStatus.OK));
}
/**
* Swagger资源配置,微服务中这各个服务的api-docs信息
*/
@GetMapping("/swagger-resources")
public Mono<ResponseEntity> swaggerResources() {
return Mono.just((new ResponseEntity<>(swaggerResources.get(), HttpStatus.OK)));
}
}
展示knife4j的聚合swagger效果,仅需要访问网关的API文档页面即可,可自行切换到相关服务的API文档。
在此之前先启动我们的Nacos注册中心,然后依次启动网关服务和其他两个集成swagger的服务;
从网关访问API文档,访问地址:http://localhost:8088/doc.html
此处可以看出knife4j的服务选择是根据网关配置的路由来的我的non-router没有整合swagger与knife4j出现在下拉框
但是点击会报错:
如果需要聚合该服务只需要按照
章节1
与章节2.1
整合即可
此处我使用的是satoken,如果读者使用的spring security或者其他权限认证可以自行百度放行方式,只要将对应路径放行即可
如果在2.2.5访问http://localhost:8088/doc.html被拦截
只需要将以下资源路径放行即可
重启网关访问http://localhost:8088/doc.html即可