Could not resolve placeholder 'dubbo.application.name' in string value "${dubbo.application.name}"

[wonderfulyoucn]

Could not resolve placeholder 'dubbo.application.name' in string value "${dubbo.application.name}"
尝试在配置文件中加入 后报Property 'name' threw exception; nested exception is java.lang.IllegalStateException: Invalid name="${dubbo.application.name}" contain illegal charactor, only digit, letter, '-', '_' and '.' is legal. 去除配置文件中的以上非法字符后再次运行，还是这个异常，确认过文件编码为utf-8，不知道前辈们有没遇到过这个问题？