ResourceBundle报错Can't find resource for bundle java.util.PropertyResourceBundle

问题遇到的现象和发生背景

ResourceBundle报错Can't find resource for bundle java.util.PropertyResourceBundle, key 价值建议

问题相关代码，请勿粘贴截图

Controller层代码
ResourceBundle bundle=ResourceBundle.getBundle("possibility");
String possibility=bundle.getString(stageValue);
properties文件内容
资质审查=10
需求分析=20
价值建议=30

运行结果及报错内容

tomcat报错 Can't find resource for bundle java.util.PropertyResourceBundle, key 价值建议

求解答

你把报错和源码复制到记事本发给我