现在很多网站都是短信发送的功能，怎么实现的呢。对于个人站长来说的话，通过使用SMS短信通API接口相对比较划算和简单。那怎么实现呢，步骤如下：
1. 从网上（http://sms.webchinese.cn/）申请账号，记住用户名，密码会发到手机上，这仅是登陆密码。注册后会送5条短信、和3条彩信的发送量。
2.查看SMS短信通API下行接口（http://sms.webchinese.cn/api.shtml），然后获取秘钥，其实就是加密后的登录密码。开始敲代码，相关代码如下：
using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Net; using System.Text; using System.Web; namespace Y_PostSms { public class YMethod { private string THE_UID = ""; //用户名 private string THE_KEY = ""; //接口秘钥 /// <summary>返回UTF-8编码发送接口地址</summary> /// <param name="receivePhoneNumber">目的手机号码（多个手机号请用半角逗号隔开）</param> /// <param name="receiveSms">短信内容，最多支持400个字，普通短信70个字/条，长短信64个字/条计费</param> /// <returns></returns> public string GetPostUrl(string smsMob, string smsText) { string postUrl = "http://utf8.sms.webchinese.cn/?Uid=" + THE_UID + "&key=" + THE_KEY + "&smsMob=" + smsMob + "&smsText=" + smsText; return postUrl; } /// <summary> 发送短信，得到返回值</summary> public string PostSmsInfo(string url) { //调用时只需要把拼成的URL传给该函数即可。判断返回值即可 string strRet = null; if (url == null || url.Trim().ToString() == "") { return strRet; } string targeturl = url.Trim().ToString(); try { HttpWebRequest hr = (HttpWebRequest)WebRequest.Create(targeturl); hr.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"; hr.Method = "GET"; hr.Timeout = 30 * 60 * 1000; WebResponse hs = hr.GetResponse(); Stream sr = hs.GetResponseStream(); StreamReader ser = new StreamReader(sr, Encoding.Default); strRet = ser.ReadToEnd(); } catch (Exception ex) { strRet = null; } return strRet; } /// <summary>确认返回信息 </summary> public string GetResult(string strRet) { int result = 0; try { result = int.Parse(strRet); switch (result) { case -1: strRet = "没有该用户账户"; break; case -2: strRet = "接口密钥不正确,不是账户登陆密码"; break; case -21: strRet = "MD5接口密钥加密不正确"; break; case -3: strRet = "短信数量不足"; break; case -11: strRet = "该用户被禁用"; break; case -14: strRet = "短信内容出现非法字符"; break; case -4: strRet = "手机号格式不正确"; break; case -41: strRet = "手机号码为空"; break; case -42: strRet = "短信内容为空"; break; case -51: strRet = "短信签名格式不正确,接口签名格式为：【签名内容】"; break; case -6: strRet = "IP限制"; break; default: strRet = "发送短信数量：" + result; break; } } catch (Exception ex) { strRet = ex.Message; } return strRet; } } }
3. 找在线客服开通发送权限，填写好签名，效果图如下：
本文转自叶超Luka博客园博客，原文链接：http://www.cnblogs.com/yc-755909659/p/5012733.html，如需转载请自行联系原作者
