'用法：
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1 |
httpsend_get("http://hujianbo.cn/archives/105") |
完整代码：
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Function httpsend_get(ByVal geturl As String) As String Dim myHttpWebRequest As System.Net.HttpWebRequest Dim myHttpWebResponse As System.Net.HttpWebResponse Try Dim URL As String = geturl Dim myUri As Uri = New Uri(geturl) Dim myWebRequest As System.Net.WebRequest = System.Net.WebRequest.Create(URL) myHttpWebRequest = CType(myWebRequest, System.Net.HttpWebRequest) myHttpWebRequest.KeepAlive = True myHttpWebRequest.Timeout = 300000 myHttpWebRequest.Method = "GET" Dim myWebResponse As System.Net.WebResponse = myHttpWebRequest.GetResponse() '获得响应信息 myHttpWebResponse = CType(myWebResponse, System.Net.HttpWebResponse) Dim iStatCode As Integer = CInt(myHttpWebResponse.StatusCode) myHttpWebRequest = CType(myWebRequest, System.Net.HttpWebRequest) myHttpWebResponse = CType(myWebResponse, System.Net.HttpWebResponse) Dim myStream As System.IO.Stream = myHttpWebResponse.GetResponseStream() Dim srReader As System.IO.StreamReader = New System.IO.StreamReader(myStream, System.Text.Encoding.Default) Dim sTemp As String = srReader.ReadToEnd() httpsend_get = sTemp srReader.Close() myStream.Close() myWebResponse.Close() myWebRequest.Abort() Catch WebExcp As System.Net.WebException 'Response.Write(Replace(WebExcp.Message.ToString(), "The remote server returned an error: (500) Internal Server Error.", "服务器出现故障无法连接")) httpsend_get = Replace(WebExcp.Message.ToString(), "The remote server returned an error: (500) Internal Server Error.", "服务器出现故障无法连接") Catch ex As Exception 'Response.Write(ex.ToString()) httpsend_get = ex.ToString End Try End Function '=========================================================================================== 'HTTP请求/回应 _END '=========================================================================================== 'HTTP读取 'HTTP 1.1 POST方式 'geturl=网址 'other=？号后面的参数 Function http_post(ByVal geturl As String, ByVal text As String) As String Dim myHttpWebRequest As System.Net.HttpWebRequest Dim myHttpWebResponse As System.Net.HttpWebResponse Try Dim URL As String = geturl Dim myUri As Uri = New Uri(geturl) Dim myWebRequest As System.Net.WebRequest = System.Net.WebRequest.Create(URL) myHttpWebRequest = CType(myWebRequest, System.Net.HttpWebRequest) myHttpWebRequest.KeepAlive = True myHttpWebRequest.Timeout = 3000000 myHttpWebRequest.Method = "POST" Dim postdata As String = URLEncoding(text) Dim encoding As New System.Text.ASCIIEncoding Dim byte1 As Byte() = encoding.GetBytes(postdata) myHttpWebRequest.ContentType = "application/x-www-form-urlencoded" myHttpWebRequest.ContentLength = postdata.Length Dim newStream As System.IO.Stream = myHttpWebRequest.GetRequestStream() newStream.Write(byte1, 0, byte1.Length) newStream.Close() Dim myWebResponse As System.Net.WebResponse = myHttpWebRequest.GetResponse() myHttpWebResponse = CType(myWebResponse, System.Net.HttpWebResponse) Dim iStatCode As Integer = CInt(myHttpWebResponse.StatusCode) myHttpWebResponse = CType(myWebResponse, System.Net.HttpWebResponse) Dim myStream As System.IO.Stream = myHttpWebResponse.GetResponseStream() Dim srReader As System.IO.StreamReader = New System.IO.StreamReader(myStream, encoding.Default) Dim sTemp As String = srReader.ReadToEnd() http_post = sTemp srReader.Close() myStream.Close() myWebResponse.Close() myWebRequest.Abort() Catch WebExcp As System.Net.WebException http_post = Replace(WebExcp.Message.ToString(), "The remote server returned an error: (500) Internal Server Error.", "服务器出现故障无法连接") Catch ex As Exception http_post = ex.ToString() End Try End Function 'Unicode转换 Function URLEncoding(ByVal vstrIn) As String Dim strReturn As String Dim i As Integer Dim ThisChr As String Dim innerCode As Integer Dim Hight8 As Integer Dim Low8 As Integer strReturn = "" For i = 1 To Len(vstrIn) ThisChr = Mid(vstrIn, i, 1) If Math.Abs(Asc(ThisChr)) < &HFF Then strReturn = strReturn & ThisChr Else innerCode = Asc(ThisChr) If innerCode < 0 Then innerCode = innerCode + &H10000 End If Hight8 = (innerCode And &HFF00) &HFF Low8 = innerCode And &HFF strReturn = strReturn & "%" & Hex(Hight8) & "%" & Hex(Low8) End If Next URLEncoding = strReturn strReturn = Nothing i = Nothing ThisChr = Nothing innerCode = Nothing Hight8 = Nothing Low8 = Nothing End Function '反解 URLEncoding Function UTF2GB(ByVal UTFStr) Dim gbstr Dim dig For dig = 1 To Len(UTFStr) If Mid(UTFStr, dig, 1) = "%" Then If Len(UTFStr) >= dig + 8 Then gbstr = gbstr & ConvChinese(Mid(UTFStr, dig, 9)) dig = dig + 8 Else gbstr = gbstr & Mid(UTFStr, dig, 1) End If Else gbstr = gbstr & Mid(UTFStr, dig, 1) End If Next UTF2GB = gbstr End Function Function ConvChinese(ByVal x) Dim A = Split(Mid(x, 2), "%") Dim i = 0 Dim j = 0 Dim un_icode Dim digs For i = 0 To UBound(A) A(i) = c16to2(A(i)) Next For i = 0 To UBound(A) - 1 digs = InStr(A(i), "0") un_icode = "" For j = 1 To digs - 1 If j = 1 Then A(i) = Right(A(i), Len(A(i)) - digs) un_icode = un_icode & A(i) Else i = i + 1 A(i) = Right(A(i), Len(A(i)) - 2) un_icode = un_icode & A(i) End If Next If Len(c2to16(un_icode)) = 4 Then ConvChinese = ConvChinese & ChrW(Int("&H" & c2to16(un_icode))) Else ConvChinese = ConvChinese & Chr(Int("&H" & c2to16(un_icode))) End If Next End Function Function c2to16(ByVal x) Dim i = 1 For i = 1 To Len(x) Step 4 c2to16 = c2to16 & Hex(c2to10(Mid(x, i, 4))) Next End Function Function c2to10(ByVal x) c2to10 = 0 If x = "0" Then Exit Function Dim i = 0 For i = 0 To Len(x) - 1 If Mid(x, Len(x) - i, 1) = "1" Then c2to10 = c2to10 + 2 ^ (i) Next End Function Function c16to2(ByVal x) Dim i = 0 Dim tempstr For i = 1 To Len(Trim(x)) tempstr = c10to2(CInt(Int("&h" & Mid(x, i, 1)))) Do While Len(tempstr) < 4 tempstr = "0" & tempstr Loop c16to2 = c16to2 & tempstr Next End Function Function c10to2(ByVal x) Dim mysign = System.Math.Sign(x) Dim tempnum Dim i x = System.Math.Abs(x) Dim DigS = 1 Do If x < 2 ^ DigS Then Exit Do Else DigS = DigS + 1 End If Loop tempnum = x i = 0 For i = DigS To 1 Step -1 If tempnum >= 2 ^ (i - 1) Then tempnum = tempnum - 2 ^ (i - 1) c10to2 = c10to2 & "1" Else c10to2 = c10to2 & "0" End If Next If mysign = -1 Then c10to2 = "-" & c10to2 End Function |
原文链接：HTTP GET/POST 调用方法 VB.NET，转载请注明来源！