何隆昌idea启动报错 DataSource: ‘url‘ attribute is not specified

Description: Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured. //无法配置数据库，没有指定url属性，并且无法配置embedded datasource Reason: Failed to determine a suitable driver class //原因：无法明确指定正确的驱动类（driver.class） Action: Consider the following: If you want an embedded database (H2, HSQL or Derby), please put it on the classpath. If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active). //建议： //如果如果需要加载嵌入式的数据库，请将他放入路径中 //如果有数据库设置需要从指定配置文件中加载，需要调用该配置文件（目前没有活动的配置文件） Process finished with exit code 1

原因是新添加的项目resources有时候不会指定类型

解决方法: 右键resources,指定类型