springboot 集成Swagger2启动报错
Failed to start bean ‘documentationPluginsBootstrapper’; nested exception is java.lang.NullPointerException
问题描述org.springframework.context.ApplicationContextException: Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.NullPointerException原因分析：
Springboot2.6以后将SpringMVC 默认路径匹配策略从AntPathMatcher 更改为PathPatternParser，导致出错
解决方案：
在配置文件application.properties中加入以下配置
spring.mvc.pathmatch.matching-strategy=ANT_PATH_MATCHER
如果是application.yml就加入
spring:
mvc:
pathmatch:
matching-strategy: ant_path_matcher
