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Springboot整合swagger2时启动报错Error starting ApplicationContext. To display the conditions report re-run

今天在使用Springboot整合swagger2时启动报错:

Error starting ApplicationContext. To display the conditions report re-run your application with debug enabled. 2022-03-13 23:34:42.141 ERROR 72552 --- [ main] o.s.boot.SpringApplication : Application run failed

查看运行日志发现报以下错误:

Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Failed to start bean documentationPluginsBootstrapper; nested exception is java.lang.NullPointerException

通过一段时间排查发现注释掉注解@Enableswagger2后springboot正常启动,由此开始查找原因,查找后发现是导入依赖的问题,导入的依赖为:

<dependency>
   <groupId>io.springfox</groupId>
   <artifactId>springfox-swagger2</artifactId>
   <version>2.9.2</version>
</dependency>

<dependency>
   <groupId>io.springfox</groupId>
   <artifactId>springfox-swagger-ui</artifactId>
   <version>2.9.2</version>
</dependency>

解决方法为:

将这两个依赖更改为:

<dependency>
   <groupId>io.springfox</groupId>
   <artifactId>springfox-boot-starter</artifactId>
   <version>3.0.0</version>
</dependency>

并在原来加@EnableSwagger2注解的类上加上:

@EnableSwagger2
@EnableWebMvc

这两个注解,发现启动成功

访问的地址变为:http://localhost:8080/swagger-ui/index.html

问题成功解决,如有遇到与本人相同问题的小伙伴可参考。

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