主题：如何用代码向第三方服务器发送Get请求，并获取返回的json

1、用 HttpClient 为什么报错？报什么错？

2、直接用就行了吧

Dim pos As object
try
    Dim req = System.Net.WebRequest.Create("http://127.0.0.1/test.htm?key=123")
    req.Method = "get"
    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
    pos.Close
    stm.Close
    reader.close
    msgbox(str)
catch ex As System.Net.WebException
    pos = ctype(ex.Response,System.Net.HttpWebResponse)
    'Return "post错误"
End try