电影管理系统修改后，为啥不能识别数据库

1 <?xml version="1.0" encoding="utf-8" ?>2 <configuration>3   <connectionStrings>4 5     <add name="str" connectionString="Data Source = ./SQLExPRess2008; Initial Catalog=Movie;Integrated Security=True"/> 6   </connectionStrings>7 </configuration>

1 <?xml version="1.0" encoding="utf-8" ?>2 <configuration>3   <connectionStrings>4 5     <add name="str" connectionString="Data Source=PC201503301006;Initial Catalog=Movie;Integrated Security=True"/>6   </connectionStrings>7 </configuration>