一个客户端连接服务器的小程序,服务器端可以正常读取客户端发来的数据但是当客户端关闭时,服务端也关闭了,并且抛出如下的异常:java.io.EOFExceptionat java.io.DataInputStream.readUnsignedShort(Da

org.hibernate.hql.ast.QuerySyntaxException: User is not mapped [select u from User u where u.userName=:userName and u.password=:password]    at org.hibernate.hql.ast.util.SessionFactoryHelper.requir