day02---配置Swagger2生成API接口文档(04)

一、Swagger2介绍

前后端分离开发模式中，API文档是最好的沟通方式。
Swagger 是一个规范和完整的框架，用于生成、描述、调用和可视化 RESTful 风格的 Web 服务。

(1)及时性 (接口变更后，能够及时准确地通知相关前后端开发人员)。

(2)规范性 (并且保证接口的规范性，如接口的地址，请求方式，参数及响应格式和错误信息)。

(3)一致性 (接口信息一致，不会出现因开发人员拿到的文档版本不一致，而出现分歧)。

(4)可测性 (直接在接口文档上进行测试，以方便理解业务)。

二、配置Swagger2

1、创建common模块

在guli-parent下创建模块common
配置：

groupId：com.atguigu
artifactId：common

2、在common中引入相关依赖

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <scope>provided </scope>
        </dependency>
        <!--mybatis-plus-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <scope>provided </scope>
        </dependency>
        <!--lombok用来简化实体类：需要安装lombok插件-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <scope>provided </scope>
        </dependency>
        <!--swagger-->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <scope>provided </scope>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <scope>provided </scope>
        </dependency>
        <!-- redis -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <!-- spring2.X集成redis所需common-pool2
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
            <version>2.6.0</version>
        </dependency>-->
    </dependencies>

3、在common下面创建子模块service_base

4、在模块service-base中，创建swagger的配置类

创建包com.atguigu.service_base.config，创建类SwaggerConfig

package com.atguigu.servicebase.config;
import com.google.common.base.Predicates;
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.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
@Configuration
@EnableSwagger2
public class SwaggerConfig {
    @Bean
    public Docket webApiConfig(){
        return new Docket(DocumentationType.SWAGGER_2)
                .groupName("webApi")
                .apiInfo(webApiInfo())
                .select()
                .paths(Predicates.not(PathSelectors.regex("/admin/.*")))
                .paths(Predicates.not(PathSelectors.regex("/error.*")))
                .build();
    }
    private ApiInfo webApiInfo(){
        return new ApiInfoBuilder()
                .title("网站-课程中心API文档")
                .description("本文档描述了课程中心微服务接口定义")
                .version("1.0")
                .contact(new Contact("Helen", "http://atguigu.com", "55317332@qq.com"))
                .build();
    }
}

5、在模块service模块中引入service_base

<dependency>
    <groupId>com.atguigu</groupId>
    <artifactId>service_base</artifactId>
    <version>0.0.1-SNAPSHOT</version>
</dependency>

6、在service-edu启动类上添加注解

package com.atguigu.eduservice;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
@SpringBootApplication
@ComponentScan(basePackages={"com.atguigu"})
public class EduApplication {
    public static void main(String[] args) {
        SpringApplication.run(EduApplication.class, args);
    }
}

7、根据URL访问，进行测试

http://localhost:8001/swagger-ui.html

8、API模型

可以添加一些自定义设置，例如：
定义样例数据

@ApiModelProperty(value = "创建时间", example = "2019-01-01 8:00:00")
@TableField(fill = FieldFill.INSERT)
private Date gmtCreate;
@ApiModelProperty(value = "更新时间", example = "2019-01-01 8:00:00")
@TableField(fill = FieldFill.INSERT_UPDATE)
private Date gmtModified;

9、定义接口说明和参数说明

定义在类上：@Api
定义在方法上：@ApiOperation
定义在参数上：@ApiParam

@Api(description="讲师管理")
@RestController
@RequestMapping("/admin/edu/teacher")
public class TeacherAdminController {
    @Autowired
    private TeacherService teacherService;
    @ApiOperation(value = "所有讲师列表")
    @GetMapping
    public List<Teacher> list(){
        return teacherService.list(null);
    }
    @ApiOperation(value = "根据ID删除讲师")
    @DeleteMapping("{id}")
    public boolean removeById(
            @ApiParam(name = "id", value = "讲师ID", required = true)
            @PathVariable String id){
        return teacherService.removeById(id);
    }
}