接口管理这下总会了吧？

架构探险之道

发布于 2020-09-01 14:32:55

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发布于 2020-09-01 14:32:55

文章被收录于专栏：架构探险之道架构探险之道

接口管理这下总会了吧？

使用方式
- 引入依赖
- 添加 Swagger 注解
- 配置扫描规则 application.yaml
效果
实现原理
小结

利用 Spring Boot 快速集成 Swagger 实现

Swagger 作为一款优秀的 API 接口文档管理框架，在过往的使用过程中，着实踩了不少坑。一开始，也在自己的博客上整理了使用说明文档，它的配置，说老实话，很多刚上手的同学还是觉得很难使用。我就这个问题思考了下，决定基于 Spring Boot 的装配机制，写个简单好用的 Api Starter Jar 包，让使用的人专注于接口自身，而非陷于一堆配置中无法自拔。

主要目的：

多种扫描方式（包路径、路由前缀）
自定义前缀
接口分组管理
无需额外配置，专注于接口文档自身

使用方式

引入依赖

pub.dsb.framework.boot:dsb-boot-api-starter:0.0.4.RELEASE

添加 Swagger 注解

controller

package pub.dsb.api.controller.business;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import pub.dsb.api.object.dto.ProductInfoDTO;
import pub.dsb.api.object.dto.UserInfoDTO;
import pub.dsb.framework.boot.rest.R;
import pub.dsb.framework.boot.security.annotation.Decrypt;

@Api(value = "/v1/business", tags = {"业务处理模块"})
@RestController
@RequestMapping("/v1/business")
public class BusinessController {


    /**
     * 下单
     *
     * @param productInfo
     * @return
     */
    @RequestMapping(value = "/order", method = RequestMethod.POST)
    @ApiOperation(value = "下单", notes = "下单，返回订单号", consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
    public R<String> userInfo(ProductInfoDTO productInfo) {
        return R.ok("business_id_45454545478");
    }
}

package pub.dsb.api.object.dto;

import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
@Builder
@ApiModel(description = "商品信息：流水号、信息、数量")
public class ProductInfoDTO {

    @ApiModelProperty(value = "订单流水号", example = "20200812452404", dataType = "int")
    private int orderNumber;
    @ApiModelProperty(value = "商品名称", example = "Mac 笔记本", dataType = "string")
    private String productName;
    @ApiModelProperty(value = "数量", example = "2", dataType = "int")
    private int count;


}

配置扫描规则 application.yaml

dsb:
  webmvc:
    swagger:
     # 默认分组参数，配置了的话生成默认分组下的接口扫描文档
     # base-package: x.x.x
      # 接口分组集合
      api-groups:
        - group-name: 业务处理模块
          # 接口前缀
          path-mapping: /api/biz/
          # 包路径匹配
          apis: pub.dsb.api.controller.business
          # 路由匹配
          paths: /v1/**
          api-info:
            title: 接口文档标题
            description: 接口文档描述
            terms-of-service-url: 服务地址
            name: 接口负责人:姓名
            url: 接口负责人:个人地址
            email: abc@example.com
            license: License 授权
            license-url: License 地址
            version: 接口文档版本号
        - group-name: 基础信息管理
          # 接口前缀
          path-mapping: /api/docs/
          # 包路径匹配
          apis: pub.dsb.api.controller.user
          # 路由匹配
          paths: /v1/**
          api-info:
            title: 接口文档标题
            description: 接口文档描述
            terms-of-service-url: 服务地址
            name: 接口负责人:姓名
            url: 接口负责人:个人地址
            email: abc@example.com
            license: License 授权
            license-url: License 地址
            version: 接口文档版本号

效果

访问 http://127.0.0.1:8080/swagger-ui.html

在这里插入图片描述

请求参数

在这里插入图片描述

实现原理

基于 Spring Boot 的约定大于配置，根据 YAML 中配置的接口分组信息，直接生成对应所需 Docket Bean

核心源码逻辑

package pub.dsb.framework.boot.webmvc.configuration;

import com.google.common.base.Predicate;
import com.google.common.base.Predicates;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import pub.dsb.framework.boot.webmvc.configuration.Swagger2Configuration;
import pub.dsb.framework.boot.webmvc.properties.SwaggerProperties;
import springfox.documentation.RequestHandler;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.ApiSelectorBuilder;
import springfox.documentation.spring.web.plugins.Docket;

import java.util.ArrayList;
import java.util.List;

/**
 * <p>
 * Swagger API Docket 配置
 * </p>
 *
 * @author Yiyuery
 * @date 2020/8/21
 * @since 0.0.1
 */
@Configuration
@Import({Swagger2Configuration.class, SwaggerProperties.class})
@ConditionalOnProperty(prefix = "dsb.webmvc.swagger", value = "enabled", matchIfMissing = true)
@ConditionalOnClass(Docket.class)
public class SwaggerDocketConfiguration implements BeanFactoryAware {

    private BeanFactory beanFactory;

    @Override
    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
        this.beanFactory = beanFactory;
    }

    /**
     * 注册 Docket
     *
     * @param swaggerProperties
     * @return
     */
    @Bean
    public List<Docket> registerDocket(SwaggerProperties swaggerProperties) {
        ConfigurableBeanFactory configurableBeanFactory = (ConfigurableBeanFactory) beanFactory;
        List<Docket> beans = new ArrayList();
        List<SwaggerProperties.ApiGroup> apiGroups = swaggerProperties.getApiGroups();
        if (CollectionUtils.isNotEmpty(apiGroups)) {
            registerDockets(apiGroups, beans, configurableBeanFactory);
        } else if (StringUtils.isNotEmpty(swaggerProperties.getBasePackage())) {
            //配置了默认包路径的扫描配置
            Docket docket = new Docket(DocumentationType.SWAGGER_2)
                    .groupName("DEFAULT_GROUP")
                    .select()
                    .apis(RequestHandlerSelectors.basePackage(swaggerProperties.getBasePackage()))
                    .build();
            beans.add(docket);
            configurableBeanFactory.registerSingleton(docket.getGroupName() + "_Docket", docket);
        }
        return beans;
    }

    /**
     * 解析配置 注册 Docket
     *
     * @param apiGroups
     * @param beans
     * @param configurableBeanFactory
     */
    private void registerDockets(List<SwaggerProperties.ApiGroup> apiGroups, List<Docket> beans, ConfigurableBeanFactory configurableBeanFactory) {

        for (SwaggerProperties.ApiGroup apiGroup : apiGroups) {
            SwaggerProperties.ApiInfo apiInfo = apiGroup.getApiInfo();
            Docket docket = new Docket(DocumentationType.SWAGGER_2)
                    .apiInfo(new ApiInfoBuilder()
                            .contact(new Contact(apiInfo.getName(), apiInfo.getUrl(), apiInfo.getEmail()))
                            .description(apiInfo.getDescription())
                            .title(apiInfo.getTitle())
                            .version(apiInfo.getVersion())
                            .termsOfServiceUrl(apiInfo.getTermsOfServiceUrl())
                            .license(apiInfo.getLicense())
                            .licenseUrl(apiInfo.getLicenseUrl()).build())
                    .groupName(apiGroup.getGroupName());
            ApiSelectorBuilder select = docket.select();
            if (CollectionUtils.isNotEmpty(apiGroup.getApis())) {
                Predicate<RequestHandler>[] apis = new Predicate[apiGroup.getApis().size()];
                int index = 0;
                for (String pack : apiGroup.getApis()) {
                    apis[index++] = RequestHandlerSelectors.basePackage(pack);
                }
                select.apis(Predicates.or(apis));
            }
            if (CollectionUtils.isNotEmpty(apiGroup.getPaths())) {
                Predicate<String>[] paths = new Predicate[apiGroup.getPaths().size()];
                int index = 0;
                for (String path : apiGroup.getPaths()) {
                    paths[index++] = PathSelectors.ant(path);
                }
                select.paths(Predicates.or(paths));
            }
            
            select.build();
            if (StringUtils.isNotEmpty(apiGroup.getPathMapping())) {
                docket.pathMapping(apiGroup.getPathMapping());
            }
            beans.add(docket);
            configurableBeanFactory.registerSingleton(docket.getGroupName() + "_Docket", docket);
        }
    }
}