DSAPI 简单WebAPI实现

使用DSAPI实现一个简单的WebAPI功能，以便各客户端访问。支持身份验证，支持基础防御。

新建项目（如下演示控制台示例），引用DSAPI.dll。

复制粘贴如下代码：

Module Module1
    Private WithEvents SERVER As New DSAPI.网络.HTTP监听
    Sub Main()

        With SERVER
            .绑定端口 = 83
            .编码 = System.Text.Encoding.UTF8
            .容许外网链接 = True
            '.参数前导符 = "API"
            '.使用参数前导符 = True
            .传输使用Bas64加密 = False
            .启动监听()
        End With
        Dim IP As String = DSAPI.网络.本机内网IP
        Console.WriteLine("手机端访问时请使用 " & String.Concat("http://", IP, ":", SERVER.绑定端口))
        Console.WriteLine("访问示例:" & String.Concat("http://", IP, ":", SERVER.绑定端口, "/gettext&getmsg"))

        Console.ReadKey(True)
    End Sub

    Private Sub SERVER_收到被阻止的客户端请求(客户端 As DSAPI.网络.HTTP监听.监听客户端) Handles SERVER.收到被阻止的客户端请求
        SERVER.写入信息到指定客户端输出流(客户端, "非法访问")
    End Sub

    Private Sub SERVER_收到客户端请求(客户端 As DSAPI.网络.HTTP监听.监听客户端) Handles SERVER.收到客户端请求
             Console.WriteLine(客户端.传入的URL)
        '判断是否有"token"参数而且值为和本机时间"分钟"值差异在2之内,此检测仅为防止部分自动请求,无关紧要
        'If GetToken(客户端.传入的URL) = False Then Exit Sub
        Dim Values As List(Of KeyValue) = GetKeyValues(客户端.传入的URL)
        If Values Is Nothing Then Exit Sub
        Dim Lst As New List(Of String)
        For Each Kv As KeyValue In Values
            Select Case Kv.Key.ToLower
                Case "gettext"
                    Lst.Add(String.Concat("Title=", Console.Title))
                Case "getmsg"
                    Lst.Add(String.Concat("Msg=", "如今是测试阶段"))
                Case "settitle"
                    Lst.Add("OK")
                    Console.Title = Kv.Value
                Case "setmsg"
                    Lst.Add("OK")
                    Console.WriteLine(Kv.Value)
            End Select
        Next
        Dim Mode As String = "PC端"
        Dim Info As String = 客户端.浏览器信息.ToLower
        If Info.Contains("android") Then
            Mode = "安卓端"
        End If
        Lst.Add(String.Concat("您正在使用", Mode, "请求数据"))
        SERVER.写入信息到指定客户端输出流(客户端, Join(Lst.ToArray, vbCr))
    End Sub
    Private Function GetKeyValues(URL As String) As List(Of KeyValue)
        Try
            Dim Lst As New List(Of KeyValue)
            Dim S As String = URL.ToLower
            If S.Contains("&") Then
                Dim SP() As String = S.Split("&")
                For Each T As String In SP
                    If T.Contains("=") = False Then
                        Lst.Add(New KeyValue(T, ""))
                    Else
                        Lst.Add(New KeyValue(T.Substring(0, T.IndexOf("=")), T.Substring(T.IndexOf("=") + 1)))
                    End If
                Next
            Else
                If URL.Contains("=") = False Then Return New List(Of KeyValue)({New KeyValue(URL, "")})
                Lst.Add(New KeyValue(URL.Substring(0, URL.IndexOf("=")), URL.Substring(URL.IndexOf("=") + 1)))
            End If
            Return If(Lst.Count = 0, Nothing, Lst)
        Catch
            Return Nothing
        End Try
    End Function
    Private Function GetToken(URL As String) As Boolean
        Try
            Dim S As String = URL.ToLower
            Dim Cmd As String = "token="
            If S.Contains(Cmd) = False Then Return False
            If S.Length < Cmd.Length + 2 Then Return False
            Dim M As String = S.Substring(S.IndexOf(Cmd) + Cmd.Length)
            If IsNumeric(M) = False Then Return False
            Dim N As Integer = M
            Return If(Math.Abs(M - Now.Minute) < 2, True, False)
        Catch
            Return False
        End Try
    End Function
    Friend Class KeyValue
        Public Key As String = ""
        Public Value As String = ""
        Sub New()
        End Sub
        Sub New(_Key As String, _Value As String)
            Key = _Key
            Value = _Value
        End Sub
    End Class
End Module

　　

　　

　　调试运行效果以下

 

 

传入一个或多个参数

 

 

 

传入带值的参数