Web Service的例子的详细介绍

Web服务例子（自己写的，好像在给自己做宣传，不过，暂时没别的例子可说只好将就）：http://www26.brinkster.com/ipservices/ip.asmx，这个services就干一个事，你给它ip，它返回ip的所在地（北京、上海）或者空（它不知道）。返回的结构是这样的：
public class IPInfo
{
public string ip;
public string address = "";
}

只有一个函数可用：
[WebMethod]
public IPInfo GetIPInfo(string ip)
{
// ...
}

如果在.net环境里用，首先要声称它的代理DLL（不知道国内怎么翻，就是一个客户端的包裹程序），别的环境也差不用。包裹程序在.net里是自动生成的（可惜不知道怎么贴图说明），下面是自动生成的包裹程序的代码（我用的是web matrix）：

//------------------------------------------------------------------------------
//
// This code was generated by a tool.
// Runtime Version: 1.1.4322.573
//
// Changes to this file may cause incorrect behavior and will be lost if
// the code is regenerated.
//
//------------------------------------------------------------------------------

//
// ASP.NET Web Matrix
//
using System.Diagnostics;
using System.Xml.Serialization;
using System;
using System.Web.Services.Protocols;
using System.ComponentModel;
using System.Web.Services;

///
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Web.Services.WebServiceBindingAttribute(Name="IPSoap", Namespace="http://www26.brinkster.com/ipservices/ip.asmx")]
public class IP : System.Web.Services.Protocols.SoapHttpClientProtocol {

///
public IP() {
this.Url = "http://www26.brinkster.com/ipservices/ip.asmx";
}

///
[System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://www26.brinkster.com/ipservices/ip.asmx/GetIPInfo", RequestNamespace="http://www26.brinkster.com/ipservices/ip.asmx", ResponseNamespace="http://www26.brinkster.com/ipservices/ip.asmx", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]
public IPInfo GetIPInfo(string ip) {
object[] results = this.Invoke("GetIPInfo", new object[] {
ip});
return ((IPInfo)(results[0]));
}

///
public System.IAsyncResult BeginGetIPInfo(string ip, System.AsyncCallback callback, object asyncState) {
return this.BeginInvoke("GetIPInfo", new object[] {
ip}, callback, asyncState);
}

///
public IPInfo EndGetIPInfo(System.IAsyncResult asyncResult) {
object[] results = this.EndInvoke(asyncResult);
return ((IPInfo)(results[0]));
}
}