利用短信猫发送短信

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Text;

using System.IO.Ports;

using System.Threading;

using System.Text.RegularExpressions;  //红色命名空间引用是必须的，分别是端口、线程和正则表达式

/// <summary>

///SMS 的摘要说明

/// </summary>

public class SMS

{

    public SMS()

   {

        //

       //TODO: 在此处添加构造函数逻辑

      //

    }

    /// <summary>  

    /// 将汉字转换为Unicode  

    /// </summary>  

    /// <param name="text">要转换的字符串</param>  

    /// <returns></returns>  

    public static string GBToUnicode(string text)

    {

        byte[] bytes = System.Text.Encoding.Unicode.GetBytes(text);

        string lowCode = "", temp = "";

        for (int i = 0; i < bytes.Length; i++)

        {

            if (i % 2 == 0)

            {

                temp = System.Convert.ToString(bytes[i], 16);//取出元素4编码内容（两位16进制）

                if (temp.Length < 2) temp = "0" + temp;

            }

            else

                string mytemp = Convert.ToString(bytes[i], 16);

                if (mytemp.Length < 2) mytemp = "0" + mytemp; lowCode = lowCode + mytemp + temp;//取出元素4编码内容（两位16进制）

        }

        return lowCode;

    #region 发送短息

        /// <summary>

        /// SendMessage函数用于发送短信.参数strMobileNumber设置手机号码，strMsgContent指

        /// 定要发送的内容

        /// </summary>

        /// <param name="strMobileNumber">手机号码</param>

        /// <param name="strMsgContent">要发送的内容</param>

        /// <returns> 返回指示发送是否成功</returns>

        public bool SendMessage(string strMobileNumber,string strMsgContent)

            //查看机器可用的COM端口，如果COM1已经被占用的话，请选择其他端口

            SerialPort serialPort = new SerialPort("COM1", 9600, Parity.None, 8, StopBits.One);  //端口的一些参数

            serialPort.WriteTimeout = 2000;

            try

                serialPort.ReadBufferSize = 900000;

                if (serialPort.IsOpen) serialPort.Close();

                serialPort.Open();

                serialPort.WriteLine("ATZ/r");

                Thread.Sleep(500);

                serialPort.ReadExisting();

                serialPort.WriteLine("AT+CSMP=1,167,0,8" + "/r"); //短息消息格式

                serialPort.Write("AT+CMGS=" + strMobileNumber + "/r"); //发送短信AT指令

                Thread.Sleep(1000);

                string content = GBToUnicode(strMsgContent);

                serialPort.Write(content + Convert.ToChar(26).ToString()); //Ctrl+Z的ASCII编码值

                Thread.Sleep(2000);

                string msg = serialPort.ReadExisting();

                serialPort.Close();

                return true;

            catch (Exception ex)

                Console.WriteLine(ex.Message);

                return false;

            finally

                //保证操作完成以后关闭端口，避免占用

                if (serialPort.IsOpen)

                    serialPort.Close();

    #endregion

}

前台页面aspx：

<table width="100%" border="0" cellspacing="0" cellpadding="0">

                                    <tr>

                                        <td height="30" align="right" bgcolor="#f2f2f2" class="left_txt2">

                                            手机号码：

                                        </td>

                                        <td height="30" bgcolor="#f2f2f2">

                                            <asp:TextBox ID="tbPhoneNum" runat="server"></asp:TextBox>

                                             

                                        <td height="30" bgcolor="#f2f2f2" class="left_txt">

                                    </tr>

                                            短信内容：

                                            <asp:TextBox ID="tbContent" runat="server" Height="69px" TextMode="MultiLine" Width="303px"></asp:TextBox>

                                        <td colspan="3" align="center">

                                            <table width="100%" height="31" border="0" cellpadding="0" cellspacing="0" class="nowtable">

                                                <tr>

                                                    <td class="left_bt2">

                                                        <asp:Button ID="btnDX" runat="server" Text="发送短信" OnClick="btnDX_Click" />

                                                    </td>

                                                </tr>

                                            </table>

                                </table>

#region 发送短信

    protected void btnSend_Click(object sender, EventArgs e)

    {       

        //获取手机号码与短信内容

        string cSendPhoneNum = tbPhoneNum.Text.Trim();

        string cSendContent = tbContent.Text.Trim();

        #region 利用短信猫发送短信

        SMS sms = new SMS();

        try

            //正则表达式验证，验证手机号码是否格式正确

            string code = @"^(13[0-9]|15[0|3|6|7|8|9]|18[8|9])/d{8}$";

            if (Regex.IsMatch(cSendPhoneNum, code))

                //对短信的长度进行控制

                if (cSendContent.Length == 0||cSendContent.Length > 200)

                {

                    ClientScript.RegisterClientScriptBlock(GetType(), "", "<script>alert('短信内容为空或太长!')</script>");

                    return ;

                }

                //手机号码格式正确

                if (sms.SendMessage(cSendPhoneNum, cSendContent))

                    //短信发送成功

                    ClientScript.RegisterClientScriptBlock(GetType(), "", "<script>alert('短信发送成功...'); </script>");

                else

                    ClientScript.RegisterClientScriptBlock(GetType(), "", "<script>alert('短信发送失败...'); </script>");

                ClientScript.RegisterClientScriptBlock(GetType(), "", "<script>alert('手机号码格式错误,请检查...')</script>");

        catch (Exception ex)

            ClientScript.RegisterClientScriptBlock(GetType(), "", "<script>alert('"+ex.Message+"')</script>");

        #endregion

以上就是全部可用代码，并加以适当注释。

以下附注常用的AT指令表：

FUNCTIONS

AT COMMANDS

DETAILS

选择短消息服务

AT+CSMS

选择是否打开短消息服务以及广播服务

短消息存储

AT+CPMS

选择短消息优先存储区域

短消息格式

AT+CMGF

选择短消息支持格式（TEXT or PDU）

保存设置

AT+CSAS

保存+CSCA and +CSMP参数设置

恢复设置

AT+CRES

恢复+CSCA and +CSMP参数设置

显示TEXT参数

AT+CSDH

显示当前TEXT模式下结果代码

新消息提示

AT+CNMI

选择当有新的短消息来时系统提示方式

读短消息

AT+CMGR

读取短消息

列短消息

AT+CMGL

将存储的短消息列表

发送短消息

AT+CMGS

写短消息

AT+CMGW

写短消息并保存在存储器中

从内存中发短消息

AT+CMSS

发送在存储器中保存的短消息

设置TEXT参数

AT+CSMP

设置在TEXT模式下条件参数

删除短消息

AT+CMGD

删除保存的短消息

服务中心地址

AT+CSCA

提供短消息服务中心的号码

选择广播类型

AT+CSCB

选择系统广播短消息的类型

广播标识符

AT+WCBM

读取SIM卡中系统广播标识符

短消息位置修改

AT+WMSC

修改短消息位置

短消息覆盖

AT+WMGO

写一条短消息放在第一个空位