问题描述：
spring-boot-starter 2.6.7 + spring-cloud-starter-security + knife4j。启动报错：
java.lang.IllegalStateException: org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@de18f63 has not been refreshed yet
...
org.springframework.context.ApplicationContextException: Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.NullPointerException
...
Unexpected error occurred in scheduled task
配置文件配置matching-strategy后，仍然无效果，还是启动不起来。
mvc:
pathmatch:
matching-strategy: ant_path_matcher
解决方案：
配置matching-strategy的解决方案，在没有spring-boot-starter-actuator的时候大部分是可以解决的。如果还是报错，可以增加以下配置
@Bean
public static BeanPostProcessor springfoxHandlerProviderBeanPostProcessor() {
return new BeanPostProcessor() {
@Override
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
if (bean instanceof WebMvcRequestHandlerProvider || bean instanceof WebFluxRequestHandlerProvider) {
customizeSpringfoxHandlerMappings(getHandlerMappings(bean));
}
return bean;
}
private <T extends RequestMappingInfoHandlerMapping> void customizeSpringfoxHandlerMappings(List<T> mappings) {
mappings.removeIf(mapping -> mapping.getPatternParser() != null);
}
@SuppressWarnings("unchecked")
private List<RequestMappingInfoHandlerMapping> getHandlerMappings(Object bean) {
try {
Field field = ReflectionUtils.findField(bean.getClass(), "handlerMappings");
field.setAccessible(true);
return (List<RequestMappingInfoHandlerMapping>) field.get(bean);
} catch (IllegalArgumentException | IllegalAccessException e) {
throw new IllegalStateException(e);
}
}
};
}
参考资料：
SpringBoot2.6,在有spring-boot-starter-actuator依赖的情况下报错，2.5.7正常启动
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