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出现这种情况可能是项目中含有继承WebMvcConfigurationSupport的类，这会导致 swagger 配置失效。

解决方法，继承WebMvcConfigurationSupport下重写addResourceHandlers方法

 @Overridepublic void addResourceHandlers(ResourceHandlerRegistry registry) {registry.addResourceHandler("doc.html").addResourceLocations("classpath:/META-INF/resources/");registry.addResourceHandler("swagger-ui.html").addResourceLocations("classpath:/META-INF/resources/");registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");}

 重新运行，完美解决