关于支掉op的问题？急

下面是源代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using LDWebHttp.Comm.log;
using System.Web.Script.Services;
using System.IO;
using System.Text;
using LDWebHttp.JsonHelper;
using System.ServiceModel;
using System.Runtime.Serialization;namespace LDWebHttp
{
    /// <summary>
    /// 的摘要说明
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    // 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。
    [System.Web.Script.Services.ScriptService]
    public class LDWebHttp : WebService
    {
         //string oldUrl = HttpContext.Current.Request.RawUrl;           
         //this.Context.RewritePath(oldUrl.Replace("op=", ""));        [WebMethod(Description = "HelloWorld通道测试方法")]
        public string HelloWorld()
        {
           
            return "Hello World";
        }
        [WebMethod]
        public string  signSMSData(string SMSBody)
        {
            string msg="fail";
            if (!string.IsNullOrEmpty(SMSBody))
            {
                //进行数据解析
                msg = "ok";
                LogTool.Instance().Write("SMSBody=" + SMSBody, msgType.Information);
            }
            else { 
                
                LogTool.Instance().Write("SMSBody=接收到数据为空" + SMSBody, msgType.Information); 
            }
            return msg;
        }
        [WebMethod]
        [ScriptMethod(UseHttpGet = true)]
        public string PostSMSPropertyList()
        {
            string msg = "postfail";
            string jsonString = HttpContext.Current.Request["signSMSBody"];
            LogTool.Instance().Write("signSMSBody=" + jsonString, msgType.Information);
           // var productProperty=string.Empty;
            if (jsonString != null)
            {
                var productProperty = JsonHelper.jsondelpher.JsonDeserialize<MPSMSProperty>(jsonString); // productProperty 成功反序列化成MProductProperty的对象
                LogTool.Instance().Write("productProperty=" + productProperty, msgType.Information); 
                msg="postsuccess";
            }
            //返回接收成功标识
            return msg;
        } 
    }
   
}