异常 Canonical names should be kebab-case (‘-‘ separated), lowercase alpha-numeric characters and must start with a letter
Description:
Configuration property name 'projectUrl' is not valid:
Invalid characters: 'U'
Bean: projectUrlConfig
Reason: Canonical names should be kebab-case ('-' separated), lowercase alpha-numeric characters and must start with a letter
Action:
Modify 'projectUrl' so that it conforms to the canonical names requirements.Canonical names should be kebab-case (‘-‘ separated), lowercase alpha-numeric characters and must start with a letter
译：规范名称应为 kebab 大小写（“-”分隔），小写字母数字字符，并且必须以字母开头
参考 SpringBoot 官方文档
Relaxed Binding
Spring Boot uses some relaxed rules for binding Environment properties to @ConfigurationProperties beans, so there does not need to be an exact match between the Environment property name and the bean property name. Common examples where this is useful include dash-separated environment properties (for example, context-path binds to contextPath), and capitalized environment properties (for example, PORT binds to port).
轻松绑定
Spring Boot 使用一些宽松的规则将 Environment 属性绑定到 @ConfigurationProperties bean，因此不需要在 Environment 属性名和 bean 属性名之间进行精确匹配。这有用的常见示例包括破折号分隔的环境属性（例如，context-path 绑定到 contextPath）和大写环境属性（例如，PORT 绑定到端口）。projectUrl 应改为 project-url