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1、什么是Knife4j

在日常开发中，写接口文档是我们必不可少的，而Knife4j就是一个接口文档工具，可以看作是Swagger的升级版，但是界面比Swagger更好看，功能更丰富

早期，swagger-boostrap-ui是1.x版本，如今swagger-bootsrap-ui到2.x，同时也更改名字Knife4j，适用于单体和微服务项目。

Knife4j官方网站

2、SpringBoor整合Knife4j

2.1、Knife4j配置方式1

1、引入Knife4j相关依赖

<dependency><groupId>com.github.xiaoymin</groupId><artifactId>knife4j-spring-boot-starter</artifactId><version>2.0.8</version>
</dependency>
<dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional>
</dependency>

2、创建Knife4J配置类

package com.heima.common.swagger;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();}
}

3、把配置的bean注入spring

2.2 配置方式二

1、引入Knife4j相关依赖

<dependency><groupId>com.github.xiaoymin</groupId><artifactId>knife4j-spring-boot-starter</artifactId><version>2.0.8</version>
</dependency>
<dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional>
</dependency>

2、写配置

在application.yml文件中配置

knife4j:enable: trueopenapi:title: 用户管理接口文档description: "用户管理接口文档"email: zhanghuyi@itcast.cnconcat: 虎哥url: https://www.itcast.cnversion: v1.0.0group:default:group-name: defaultapi-rule: packageapi-rule-resources:- com.itheima.mp.controller

2.3、写注解

package com.heima.user.controller.v1;import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.user.dtos.LoginDto;
import com.heima.user.service.ApUserService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.checkerframework.checker.units.qual.A;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
@RequestMapping("/api/v1/login")
@Api(value = "app端用户登录",tags = "app端用户登录")
public class ApUserLoginController {@Autowiredprivate ApUserService apUserService;@PostMapping("/login_auth")@ApiOperation("用户登录")public ResponseResult login(@RequestBody LoginDto dto){return apUserService.login(dto);}
}

2.4、效果

此时运行项目，访问 IP+端口/doc.html