springboot版本号：2.7.3
knife4j:3.0.2

使用步骤

1. 导入 knife4j 的maven坐标

   在pom.xml中添加依赖

    <dependency><groupId>com.github.xiaoymin</groupId><artifactId>knife4j-spring-boot-starter</artifactId><version>3.0.2</version></dependency>
   

2. 在配置类中加入 knife4j 相关配置WebMvcConfiguration.java

/*** 通过knife4j生成接口文档* @return
*/@Beanpublic Docket docket() {ApiInfo apiInfo = new ApiInfoBuilder().title("项目接口文档").version("2.0").description("项目接口文档").build();Docket docket = new Docket(DocumentationType.SWAGGER_2).apiInfo(apiInfo).select().apis(RequestHandlerSelectors.basePackage("com.sky.controller")).paths(PathSelectors.any()).build();return docket;}

3. 

设置静态资源映射，否则接口文档页面无法访问

WebMvcConfiguration.java

 /*** 设置静态资源映射* @param registry*/protected void addResourceHandlers(ResourceHandlerRegistry registry) {registry.addResourceHandler("/doc.html").addResourceLocations("classpath:/META-INF/resources/");registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");}

4.访问：localhost:8080/doc.html 

完整代码如下：

package com.qing.springboot.config;import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
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;/*** 配置类，注册web层相关组件*/
@Configuration
@Slf4j
public class WebMvcConfiguration extends WebMvcConfigurationSupport {/*** 通过knife4j生成接口文档* @return*/@Beanpublic Docket docket() {ApiInfo apiInfo = new ApiInfoBuilder().title("项目接口文档").version("2.0").description("项目接口文档").build();Docket docket = new Docket(DocumentationType.SWAGGER_2).apiInfo(apiInfo).select().apis(RequestHandlerSelectors.basePackage("com.qing.springboot.controller")).paths(PathSelectors.any()).build();return docket;}/*** 设置静态资源映射* @param registry*/@Overrideprotected void addResourceHandlers(ResourceHandlerRegistry registry) {registry.addResourceHandler("/doc.html").addResourceLocations("classpath:/META-INF/resources/");registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");}
}

友情提示：有些内容是可以根据自己的项目进行改写的，次框架还有一些其他的功能，请自行学习。祝每次运行顺利！