异常详细信息: System.ArgumentException: 不支持关键字: “metadata”。

<add name="xxxxDBEntities" connectionString="metadata=res://*/EFModel.csdl|res://*/EFModel.ssdl|res://*/EFModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=xx.xx.xx.xx;initial catalog=xxDB;persist security info=True;user id=xx;password=xx;MultipleActiveResultSets=True;App=EntityFramework&quot;metad