swagger 与 knife4j 的常用方法



swagger 

引入依赖
xml <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> </dependency> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger-ui</artifactId> </dependency>
配置类
package com.demo.admin.config; import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty; 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; import springfox.documentation.swagger2.annotations.EnableSwagger2; @Configuration @EnableSwagger2 public class SwaggerConfiguration { @Bean public Docket buildDocket() { return new Docket(DocumentationType.SWAGGER_2) .apiInfo(buildApiInfo()) .select() // 要扫描的API(Controller)基础包 .apis(RequestHandlerSelectors.basePackage("com.heima")) .paths(PathSelectors.any()) .build(); } private ApiInfo buildApiInfo() { Contact contact = new Contact("我以为","",""); return new ApiInfoBuilder() .title("头条-平台管理API文档") .description("平台管理服务api") .contact(contact) .version("1.0.0").build(); } }
Swagger常用注解
在Java类中添加Swagger的注解即可生成Swagger接口文档,常用Swagger注解如下:
@Api:修饰整个类,描述Controller的作用 @ApiOperation:描述一个类的一个方法,或者说一个接口 @ApiParam:单个参数的描述信息
@ApiModel:用对象来接收参数
@ApiModelProperty:用对象接收参数时,描述对象的一个字段
@ApiResponse:HTTP响应其中1个描述
@ApiResponses:HTTP响应整体描述
@ApiIgnore:使用该注解忽略这个API
@ApiError :发生错误返回的信息
@ApiImplicitParam:一个请求参数
@ApiImplicitParams:多个请求参数的描述
范例
我们在AdChannelControllerApi中添加Swagger注解,代码如下所示:
@Api(value = "频道管理", tags = "channel", description = "频道管理API") public interface AdChannelControllerApi { /** * 根据名称分页查询频道列表 * @param dto * @return */ @ApiOperation("频道分页列表查询") public ResponseResult findByNameAndPage(ChannelDto dto); }
ChannelDto
@Data public class ChannelDto extends PageRequestDto { /** * 频道名称 */ @ApiModelProperty("频道名称") private String name; }
PageRequestDto
@Data @Slf4j public class PageRequestDto { @ApiModelProperty(value="当前页",required = true) protected Integer size; @ApiModelProperty(value="每页显示条数",required = true) protected Integer page; public void checkParam() { if (this.page == null || this.page < 0) { setPage(1); } if (this.size == null || this.size < 0 || this.size > 100) { setSize(10); } } }

knife4j

knife4j是为Java MVC框架集成Swagger生成Api文档的增强解决方案,前身是swagger-bootstrap-ui,取名kni4j是希望它能像一把匕首一样小巧,轻量,并且功能强悍!
gitee地址:https://gitee.com/xiaoym/knife4j
官方文档:https://doc.xiaominfo.com/
pom.xml文件中引入knife4j的依赖,如下  
<dependency> <groupId>com.github.xiaoymin</groupId> <artifactId>knife4j-spring-boot-starter</artifactId> </dependency>
  • 创建Swagger配置文件
  新建Swagger的配置文件SwaggerConfiguration.java文件,创建springfox提供的Docket分组对象,代码如下:  
package com.heima.common.knife4j; import com.github.xiaoymin.knife4j.spring.annotations.EnableKnife4j; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.Import; import springfox.bean.validators.configuration.BeanValidatorPluginsConfiguration; import springfox.documentation.builders.ApiInfoBuilder; import springfox.documentation.builders.PathSelectors; import springfox.documentation.builders.RequestHandlerSelectors; import springfox.documentation.service.ApiInfo; import springfox.documentation.spi.DocumentationType; import springfox.documentation.spring.web.plugins.Docket; import springfox.documentation.swagger2.annotations.EnableSwagger2; @Configuration @EnableSwagger2 @EnableKnife4j @Import(BeanValidatorPluginsConfiguration.class) public class Swagger2Configuration { @Bean(value = "defaultApi2") public Docket defaultApi2() { Docket docket=new Docket(DocumentationType.SWAGGER_2) .apiInfo(apiInfo()) //分组名称 .groupName("1.0") .select() //这里指定Controller扫描包路径 .apis(RequestHandlerSelectors.basePackage("com.heima")) .paths(PathSelectors.any()) .build(); return docket; } private ApiInfo apiInfo() { return new ApiInfoBuilder() .title("黑马头条API文档") .description("黑马头条API文档") .version("1.0") .build(); } }
两个注解需要特别说明
@EnableSwagger2该注解是Springfox-swagger框架提供的使用Swagger注解,该注解必须加
@EnableKnife4j该注解是knife4j提供的增强注解,Ui提供了例如动态参数、参数过滤、接口排序等增强功能,如果你想使用这些增强功能就必须加该注解,否则可以不用加