swagger与Spring boot程序配合组织出强大RESTful API文档。它既可以减少我们创建文档的工作量，同时说明内容又整合入实现代码中，让维护文档和修改代码整合为一体，可以让我们在修改代码逻辑的同时方便的修改文档说明。

第一步：引入swagger的依赖文件：

<dependency>
         <groupId>io.springfox</groupId>
         <artifactId>springfox-swagger2</artifactId>
         <version>2.7.0</version>
  </dependency>
<dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.7.0</version>
</dependency> 

这里的版本为2.7.0。

第二步：新建SwaggerProperties属性文件：

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;

/**
 * @author guotx
 * @create 2018-04-27 14:42
 * @desc 配置swagger信息
 **/
@Component
@PropertySource(value = "classpath:application.properties")
@ConfigurationProperties(prefix = "swagger")
public class SwaggerProperties {

    private String basePackage;
    private String title;
    private String contactName;
    private String contactEmail;
    private String license;
    private String licenseUrl;
    private String termsOfServiceUrl;
    private String version;
    private String desc;
(省略getter和setter方法)
}

第三步：新建SwaggerConfig配置文件：

import com.alibaba.rhino.fileupload.oss.OSSFile;

import com.fasterxml.classmate.TypeResolver;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.multipart.MultipartFile;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.schema.AlternateTypeRule;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;

/**
 * @author guotx
 * @create 2018-04-27 14:31
 * @desc Swagger接口配置
 **/
@Configuration
public class SwaggerConfig {
    @Autowired
    private SwaggerProperties swaggerProperties;

    @Value("${spring.profiles.active}")
    String env;

    private final static String CAN_SHOW_ENV_PROFILES = "testing;project;staging";
    @Bean
    public Docket createRestApi() {
        TypeResolver resolver = new TypeResolver();
        AlternateTypeRule alternateTypeRule = new AlternateTypeRule(resolver.resolve(OSSFile.class),
            resolver.resolve(MultipartFile.class));
        return new Docket(DocumentationType.SWAGGER_2)
            .enable(CAN_SHOW_ENV_PROFILES.contains(env))
            .apiInfo(apiInfo())
            .alternateTypeRules(alternateTypeRule)
            .select().apis(RequestHandlerSelectors.basePackage(swaggerProperties.getBasePackage()))
            .paths(PathSelectors.any())
            .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
            .title(swaggerProperties.getTitle())
            .description(swaggerProperties.getDesc())
            .termsOfServiceUrl("")
            .contact(new Contact(swaggerProperties.getContactName(), null, swaggerProperties.getContactEmail()))
            .license(swaggerProperties.getLicense())
            .licenseUrl(swaggerProperties.getLicenseUrl())
            .termsOfServiceUrl(swaggerProperties.getTermsOfServiceUrl())
            .version(swaggerProperties.getVersion())
            .build();
    }
}

第四步：application.properties添加配置信息

#接口文档配置
swagger.basePackage=com.tx.house.controller
swagger.title=房屋管理系统
swagger.desc=房屋管理接口
swagger.version=1.0
swagger.contactName=guotx、Lili
swagger.contactEmail=
swagger.license=
swagger.licenseUrl=
swagger.termsOfServiceUrl= https://www.jianshu.com

第五步：Controller中使用

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;

@Api(value = "XXX业务接口", tags = { "XXX业务接口" }, hidden = true)
@RestController
@RequestMapping(value = "api/order")
public class OrderController {
@ApiOperation(value = "XXX接口描述")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "id", defaultValue = "278002", value = "订单ID", required = true, dataType = "Long", paramType = "query"),
            @ApiImplicitParam(name = "buyerId", defaultValue = "3736416120", value = "买家ID", required = true, dataType = "Long", paramType = "query") })
    @GetMapping(value = "/detail")
    public PojoResult<OrderDetailVO> detail(@RequestParam("id") Long id, @RequestParam("buyerId") Long buyerId) {
  ......
  }
}

• 后记
  参数列表实现可选效果，只需在@ApiImplicitParam注解里面加上allowableValues="选项1,选项2,选项3,……"即可，多选也很简单，加上allowMultiple = true。

@ApiOperation(value = "测试swagger下拉框")
@ApiImplicitParams({
        @ApiImplicitParam(name = "type", value = "类型", dataType = "String", paramType = "query",
                allowableValues = "苹果,荔枝,菠萝", allowMultiple = true)
})
@RequestMapping(value = "/select", method = {RequestMethod.GET})
public String[] mystyle(String[] type) {
    return type;
}

springfox-swagger2版本的问题，2.5.x - 2.7.x 版本支持多选，2.8.0版本后不支持下拉框多选。