Spring Boot3整合knife4j(swagger3)

1.前置条件

2.导依赖

3.配置

1.前置条件

已经初始化好一个spring boot项目且版本为3X，项目可正常启动。

作者版本为3.2.2最新版

2.导依赖

knife4j官网：

Knife4j · 集Swagger2及OpenAPI3为一体的增强解决方案. | Knife4j (xiaominfo.com)https://doc.xiaominfo.com/依赖选择：

作者的使用的spring boot 3.2.2为当前最新版，所以依赖导入最新的knife4j 4.4.0

         <dependency><groupId>com.github.xiaoymin</groupId><artifactId>knife4j-openapi3-jakarta-spring-boot-starter</artifactId><version>4.4.0</version></dependency>

3.配置

官方文档（快速开始）：

快速开始 | Knife4j (xiaominfo.com)https://doc.xiaominfo.com/docs/quick-start

官方文档（详细配置）：

3.1 增强模式 | Knife4j (xiaominfo.com)https://doc.xiaominfo.com/docs/features/enhance

application.yml：

springdoc:swagger-ui:path: /swagger-ui.htmltags-sorter: alphaoperations-sorter: alphaapi-docs:path: /v3/api-docsgroup-configs:- group: '蒾酒'paths-to-match: '/**'#生成文档所需的扫包路径，一般为启动类目录packages-to-scan: com.mijiu#knife4j配置
knife4j:#是否启用增强设置enable: true#开启生产环境屏蔽production: false#是否启用登录认证basic:enable: trueusername: adminpassword: 123456setting:language: zh_cnenable-version: trueenable-swagger-models: trueswagger-model-name: 用户模块

写个接口：

@Tag注解：标记接口类别

@Operation:标记接口操作

@RestController
@Tag(name = "用户接口")
@RequestMapping("/user")public class UserController {private final UserService userService;public UserController(UserService userService) {this.userService = userService;}@GetMapping("/list")@Operation(summary = "用户列表")public List<User> test(){return userService.list();}@Operation(summary = "你好")@GetMapping("/hello")public Object test2(){return "hello";}
}

启动项目：

浏览器输入：http://ip:port/doc.html

接口已经识别到了

接下来配置以下接口文档的作者等信息

在config目录下新建配置类：

import io.swagger.v3.oas.models.OpenAPI;
import io.swagger.v3.oas.models.info.Contact;
import io.swagger.v3.oas.models.info.Info;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;/*** @author mijiupro*/
@Configuration
public class Knife4jConfig {@Beanpublic OpenAPI springShopOpenApi() {return new OpenAPI()// 接口文档标题.info(new Info().title("蒾酒的demo")// 接口文档简介.description("这是基于Knife4j OpenApi3的测试接口文档")// 接口文档版本.version("1.0版本")// 开发者联系方式.contact(new Contact().name("蒾酒").email("000000000@qq.com")));}}

重启项目，再次访问

每次都要打开浏览器输入地址访问不友好

启动类上优化：

@SpringBootApplication
@MapperScan("com.mijiu.mapper")
@Slf4j
public class SpringbootTemplateApplication {public static void main(String[] args) {SpringApplication app = new SpringApplication(SpringbootTemplateApplication.class);Environment env = app.run(args).getEnvironment();app.setBannerMode(Banner.Mode.CONSOLE);logApplicationStartup(env);}private static void logApplicationStartup(Environment env) {String protocol = "http";if (env.getProperty("server.ssl.key-store") != null) {protocol = "https";}String serverPort = env.getProperty("server.port");String contextPath = env.getProperty("server.servlet.context-path");if (StringUtils.isBlank(contextPath)) {contextPath = "/doc.html";} else {contextPath = contextPath + "/doc.html";}String hostAddress = "localhost";try {hostAddress = InetAddress.getLocalHost().getHostAddress();} catch (UnknownHostException e) {log.warn("The host name could not be determined, using `localhost` as fallback");}log.info("""----------------------------------------------------------\t应用程序“{}”正在运行中......\t接口文档访问 URL:\t本地: \t\t{}://localhost:{}{}\t外部: \t{}://{}:{}{}\t配置文件: \t{}----------------------------------------------------------""",env.getProperty("spring.application.name"),protocol,serverPort,contextPath,protocol,hostAddress,serverPort,contextPath,env.getActiveProfiles());}}

效果如图：