asp.net mvc4 配置数据库连接的相关问题

webconfig中配置<connectionStrings></connectionStrings>如下：

<connectionStrings>

<add name="GoodPanEntities" connectionString="metadata=res://*/GoodPan.csdl|res://*/GoodPan.ssdl|res://*/GoodPan.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=.\SQLEXPRESS;initial catalog=数据库名;persist security info=True;

user id=用户;password=密码;MultipleActiveResultSets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />

</connectionStrings>

配置后在本地运行正常，上传到服务器后出现错误，把data source=.\SQLEXPRESS;改成服务器ip运行正常。

<connectionStrings>

<add name="GoodPanEntities" connectionString="metadata=res://*/GoodPan.csdl|res://*/GoodPan.ssdl|res://*/GoodPan.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=服务器IP;initial catalog=数据库名;persist security info=True;

user id=用户;password=密码;MultipleActiveResultSets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />

</connectionStrings>