WebService应用实列

1.新建项目WebService1

2.创建APISoapHeader，继承

System.Web.Services.Protocols.SoapHeader

APISoapHeader代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace WebService1
{
    public class APISoapHeader:System.Web.Services.Protocols.SoapHeader
    {
        private string _localhostkey = string.Empty;
        private string _secretkey = string.Empty;

        /// <summary>
        /// 构造函数
        /// </summary>
        public APISoapHeader() 
        {
            //配置文件的SoapHeader_APIKey
            this._localhostkey = System.Configuration.ConfigurationManager.AppSettings.Get("SoapHeader_APIKey");
        }

        /// <summary>
        /// 获取或设置密钥
        /// </summary>
        public string SecretKey
        {
            get { return this._secretkey; }
            set { this._secretkey = value; }
        }

        /// <summary>
        /// 是否为安全的API调用
        /// </summary>
        public bool IsSafeCall
        {
            get
            {
                if (this._localhostkey == this._secretkey)
                    return true;
                else
                    return false;
            }
        }
    }
}

WebService1项目的配置文件（web.config）

  <appSettings>
    <!--TMIS项目API调用的密钥-->
    <add key="SoapHeader_APIKey" value="1127d575-5633-4b97-a0fd-bb6bfb0d27de"/>    
  </appSettings>

Service1.asmx 代码结构

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;

namespace WebService1
{
    /// <summary>
    /// Service1 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 Service1 : System.Web.Services.WebService
    {
        public APISoapHeader soapHeader = new APISoapHeader();//声明header
        [System.Web.Services.Protocols.SoapHeader("soapHeader")]//表明调用时需要传入header
        [WebMethod]
        public string HelloWorld()
        {
            if (!soapHeader.IsSafeCall)//传入的自定义APISoapHeader不正确，讲返回“你好！”
            {
                return "你好！";
            }
            return "Hello World";
        }
    }
}

客户端调用：引用服务应用，ServiceReference1

 ServiceReference1.Service1SoapClient soap = new WebApplication1.ServiceReference1.Service1SoapClient();
        protected void Page_Load(object sender, EventArgs e)
        {
           ServiceReference1.APISoapHeader SoapHeader = new WebApplication1.ServiceReference1.APISoapHeader();
            //设置SoapHeader Key
           SoapHeader.SecretKey = "1127d575-5633-4b97-a0fd-bb6bfb0d27de 5";
           //WebService的方法HelloWorld没有使用APISoapHeader作参数，但是声明了 [System.Web.Services.Protocols.SoapHeader("soapHeader")]
           Response.Write(soap.HelloWorld(SoapHeader));
        }