【已解决】Swagger配置问题—Failed to start bean ‘documentationPluginsBootstrapper‘

项目场景：

swagger-demo

编写SwaggerConfig.java后运行SwaggerDemoApplication.java不能成功

问题描述

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.

org.springframework.context.ApplicationContextException: Failed to start bean ‘documentationPluginsBootstrapper’; nested exception is java.lang.NullPointerException
访问http://localhost:8080/swagger-ui.html

当前SpringBoot版本为2.7.13（pom.xml文件中）

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.7.13</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

原因分析：

当前SpringBoot版本和swagger2导入的相关依赖不兼容

当前添加的swagger相关依赖（pom.xml文件中）

<!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger2 -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.9.2</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger-ui -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.9.2</version>
        </dependency>

解决方案：

在application.properties中添加一行配置

spring.mvc.pathmatch.matching-strategy=ant_path_matcher

重新运行SwaggerDemoApplication.java再访问http://localhost:8080/swagger-ui.html