DOTNET下的三种调用webservice方式之ASP.NET调用方式

首先当然是开发一个webservice，我们来个简单的计算器的实现，代码如下

using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Collections; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.ComponentModel; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Data; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Linq; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Services; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Services.Protocols; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Xml.Linq; namespace WebServiceApp { /// <summary> /// CalcService 的<a href="/tag/zhaiyao/" target="_blank" class="keywords">摘要</a>说明 /// </summary> [WebService(Namespace = "http://te<a href="/tag/mpu/" target="_blank" class="keywords">mpu</a>ri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [Tool<a href="/tag/Box/" target="_blank" class="keywords">Box</a>Item(false)] // 若要允许使用 ASP.NET AJAX 从脚本中<a href="/tag/diaoyong/" target="_blank" class="keywords">调用</a>此 Web 服务，请取消对下行的注释。 //[Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Script.Services.ScriptService] public class CalcService : Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Services.WebService { [WebMethod] public double Add(double x,double y) { return x + y; } [WebMethod] public double Minus(double x,double y) { return x - y; } [WebMethod] public double Multiply(double x,double y) { return x * y; } [WebMethod] public double Devide(double x,double y) { return x / y; } [WebMethod] public double Power(double x,int n) { double result = 1; for (int i = 1; i <= n; i++) { result *= x; } return result; } [WebMethod] public double Sin(double x) { return Math.Sin(x); } [WebMethod] public double Cos(double x) { return Math.Cos(x); } } }

好，这么一个简单的webservice是开发完了,用IIS发布

调用的URL为： http://localhost/WebServiceApp/CalcService.asmx

下面分别介绍三种方式来调用该webservice，分别是：ASP.NET、Javascript、WinForm

先说第一种方式ASP.NET

新建一个ASP.NET网络应用程序，我取名为WebClient

第一步当然是添加web引用，把刚才的webservice调用网站复制到输入框中，然后取名为默认的localhost

在Default.aspx页面代码中添加如下代码

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebClient._Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>WebService Test</title> </head> <body> <form id="form1" runat="server"> <div> <asp:Text<a href="/tag/Box/" target="_blank" class="keywords">Box</a> ID="num1" runat="server"></asp:Text<a href="/tag/Box/" target="_blank" class="keywords">Box</a>> <asp:DropDownList ID="oper" runat="server" A<a href="/tag/utop/" target="_blank" class="keywords">utop</a>ostBack="True" onselecte<a href="/tag/dind/" target="_blank" class="keywords">dind</a>exchanged="oper_Selecte<a href="/tag/dind/" target="_blank" class="keywords">dind</a>exChanged"> <asp:ListItem Text="+" Value="+" Selected="True"></asp:ListItem> <asp:ListItem Text="-" Value="-"></asp:ListItem> <asp:ListItem Text="*" Value="*"></asp:ListItem> <asp:ListItem Text="/" Value="/"></asp:ListItem> <asp:ListItem Text="power" Value="power"></asp:ListItem> <asp:ListItem Text="sin" Value="sin"></asp:ListItem> <asp:ListItem Text="cos" Value="cos"></asp:ListItem> </asp:DropDownList> <asp:Text<a href="/tag/Box/" target="_blank" class="keywords">Box</a> ID="num2" runat="server"></asp:Text<a href="/tag/Box/" target="_blank" class="keywords">Box</a>> <asp:Button ID="btnResult" runat="server" Text="=" onclick="btnResult_Click" /> <asp:Text<a href="/tag/Box/" target="_blank" class="keywords">Box</a> ID="result" runat="server"></asp:Text<a href="/tag/Box/" target="_blank" class="keywords">Box</a>> </div> </form> </body> </html>

也就是提供输入数字和显示结果的界面，很简单

后台代码为

using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Collections; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Con<a href="/tag/fig/" target="_blank" class="keywords">fig</a>uration; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Data; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Linq; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.S<a href="/tag/ecurity/" target="_blank" class="keywords">ecurity</a>; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.UI; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.UI.HtmlControls; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.UI.WebControls; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.UI.WebControls.WebParts; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Xml.Linq; namespace WebClient { public partial class _Default : Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.UI.Page { protected void Page_Load(object sender,EventArgs e) { } protected void btnResult_Click(object sender,EventArgs e) { double num1 = Double.Parse(this.num1.Text.Trim()); double num2 = Double.Parse(this.num2.Text.Trim()); string oper = this.oper.SelectedValue; double result = 0; localhost.CalcService service = new WebClient.localhost.CalcService(); switch (oper) { case "+": result = service.Add(num1,num2); break; case "-": result = service.Minus(num1,num2); break; case "*": result = service.Multiply(num1,num2); break; case "/": result = service.Devide(num1,num2); break; case "power": result = service.Power(num1,(int)num2); break; case "sin": result = service.Sin(num1); break; case "cos": result = service.Cos(num1); break; default: result = service.Add(num1,num2); break; } this.result.Text = result + ""; } protected void oper_Selecte<a href="/tag/dind/" target="_blank" class="keywords">dind</a>exChanged(object sender,EventArgs e) { string oper = this.oper.SelectedValue; if (oper.Equals("sin") || oper.Equals("cos")) { this.num2.Visible = false; } else { this.num2.Visible = true; } } } }

着重要看的是下面一行代码

localhost.CalcService service = new WebClient.localhost.CalcService();

该代码将创建了一个我们开发的webservice的计算器实例

然后通过该实例去调用webservice暴露出来的服务接口

结果

这就是ASP.NET应用程序调用webservice的方式，由于篇幅比较长，下两种方式分别采用序列的方式提供。请看下一篇

DOTNET下的三种调用webservice方式之ASP.NET调用方式

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