报错信息：
Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.NullPointerException
我是springboot版本 2.6.5
主要是版本更新的问题，再配置类中加上
spring.mvc.pathmatch.matching-strategy=ant_path_matcher即可解决
Swagger2 Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.NullPointerException报错
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