主题：请问我这里有代码会导致行重复新建吗？

获取数据的时候，用这种方式检测错误

Dim req = System.Net.WebRequest.Create("http://127.0.0.1")
try
    req.Method = "get"
    req.timeout = 5000
    Dim pos = req.GetResponse
   
    Dim stm As System.IO.Stream = pos.GetResponseStream()
    Dim reader As New System.IO.StreamReader(stm)
    Dim str As String = reader.ReadToEnd
    msgbox(str)
catch ex As exception
    msgbox("不能访问了,发邮件,重启服务器")
End try