调用WCF服务，我们一般都是中客户端的配置文件中配置好WCF服务的终结点，然后中后台代码中实例化WCF服务，然后调用其中的方法，今天给大家介绍一种，不需要配置终结点，直接中前台通过AJax方法调用WCF服务的方法。
首先我们先创建一个控制台WCF服务
契约接口：
using System.ServiceModel;
using System.ServiceModel.Web;
namespace Easyway.LaserControl.Contracts
{
[ServiceContract(Name = "ILaserControlService",Namespace = "http://www.htzn.net.cn/")]
public interface ILaserControlService
{
[OperationContract]
[WebGet]
double Add(double x,double y);
}
}
实现类：
using System.ServiceModel.Activation;
using System.ServiceModel.Web;
using Easyway.LaserControl.Contracts;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System;
using System.Configuration;
using System.Linq;
namespace Easyway.LaserControl.Services
{
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
[JavascriptCallbackBehavior(UrlParameterName = "jsoncallback")]
public class LaserControlService : ILaserControlService
{
public double Add(double x,double y)
{
//获取远端信息
var ip = GetIpAddress();
if (!AllowConnect(ip))
{
var msg = string.Format("IP:{0},不在允许的访问列表，禁止访问。",ip);
Console.WriteLine(msg);
throw new Exception(msg);
}
return x + y;
}
private string GetIpAddress()
{
var remote =
OperationContext.Current.IncomingMessageProperties[RemoteEndpointMessageProperty.Name] as
RemoteEndpointMessageProperty;
return remote.Address;
}
public bool AllowConnect(string ip)
{
Tuple<long,long>[] m_IpRanges;
var ipRange = ConfigurationManager.AppSettings["IpRangeFilter"];
string[] ipRangeArray;
if (string.IsNullOrEmpty(ipRange)
|| (ipRangeArray = ipRange.Split(new char[] { ',',';' },StringSplitOptions.RemoveEmptyEntries)).Length <= 0)
{
throw new ArgumentException("The ipRange doesn't exist in configuration!");
}
m_IpRanges = new Tuple<long,long>[ipRangeArray.Length];
for (int i = 0; i < ipRangeArray.Length; i++)
{
var range = ipRangeArray[i];
m_IpRanges[i] = GenerateIpRange(range);
}
var ipValue = ConvertIpToLong(ip);
var iplist = new System.Collections.Generic.List<long>();
for (var i = 0; i < m_IpRanges.Length; i++)
{
var range = m_IpRanges[i];
iplist.Add(range.Item1);
iplist.Add(range.Item2);
}
iplist = iplist.OrderBy(a => a).ToList();//我这里认为，IP地址是成对出现的。那么，判断是否是符合标准的IP，则判断是否在范围内即可，或者范围外。
for (var i = 1; i <= iplist.Count; i += 2)
{
var item = iplist[i];
bool isodd = i % 2 == 1;
if (isodd)//是奇数，代表是从列表的偶数位。1,3,5,7,9
{
var last = iplist[i - 1];
if (last <= ipValue && item >= ipValue)
return true;
}
}
return false;
}
private Tuple<long,long> GenerateIpRange(string range)
{
var ipArray = range.Split(new char[] { '-' },StringSplitOptions.RemoveEmptyEntries);
if (ipArray.Length != 2)
throw new ArgumentException("Invalid ipRange exist in configuration!");
return new Tuple<long,long>(ConvertIpToLong(ipArray[0]),ConvertIpToLong(ipArray[1]));
}
private long ConvertIpToLong(string ip)
{
var points = ip.Split(new char[] { '.' },StringSplitOptions.RemoveEmptyEntries);
if (points.Length != 4)
throw new ArgumentException("Invalid ipRange exist in configuration!");
long value = 0;
long unit = 1;
for (int i = points.Length - 1; i >= 0; i--)
{
value += unit * Convert.ToInt32( points[i]);
unit *= 256;
}
return value;
}
}
}
配置文件：
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.serviceModel>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true"/>
<behaviors>
<endpointBehaviors>
<behavior name="webBehavior">
<!--这里必须设置-->
<!--<webHttp />-->
<enableWebScript />
</behavior>
</endpointBehaviors>
<serviceBehaviors>
<behavior name="MetadataBehavior">
<serviceMetadata httpGetEnabled="true" httpGetUrl="http://192.168.1.112:8888/LaserControlService/Metadata" />
</behavior>
</serviceBehaviors>
</behaviors>
<services>
<service behaviorConfiguration="MetadataBehavior" name="Easyway.LaserControl.Services.LaserControlService">
<endpoint binding="webHttpBinding" address="http://192.168.1.112:8889/LaserControlService/web" behaviorConfiguration="webBehavior" bindingConfiguration="webBinding" contract="Easyway.LaserControl.Contracts.ILaserControlService" />
<endpoint address="http://192.168.1.112:8890/LaserControlService" binding="wsHttpBinding" bindingConfiguration="wsBinding" contract="Easyway.LaserControl.Contracts.ILaserControlService" />
<endpoint address="http://192.168.1.112:8888/LaserControlService" binding="customBinding" bindingConfiguration="asmxbinding" contract="Easyway.LaserControl.Contracts.ILaserControlService" />
</service>
</services>
<bindings>
<customBinding>
<binding name="asmxbinding">
<textMessageEncoding maxReadPoolSize="2110" maxWritePoolSize="2132" messageVersion="Soap11"/>
<httpTransport />
</binding>
</customBinding>
<wsHttpBinding>
<binding name="wsBinding">
<security mode="None"/>
</binding>
</wsHttpBinding>
<webHttpBinding>
<binding name="webBinding" crossDomainScriptAccessEnabled="true">
</binding>
</webHttpBinding>
</bindings>
</system.serviceModel>
<appSettings>
<add key="IpRangeFilter" value="192.168.1.1-192.168.1.120"/>
</appSettings>
</configuration>
using System;
using System.ServiceModel;
namespace Easyway.LaserControl
{
class Program
{
static void Main(string[] args)
{
using (ServiceHost host = new ServiceHost(typeof(LaserControl.Services.LaserControlService)))
{
host.Opened += delegate
{
Console.WriteLine("服务已经启动，按任意键终止服务！");
};
host.Open();
Console.Read();
}
}
}
}
启动WCF服务：
我们创建一个客户端来调用我们的WCF服务：
<%@ Page Language="C#" AutoEventWireup="true" Codebehind="WebForm1.aspx.cs" Inherits="WebApplication2.WebForm1" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<Meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<script type="text/javascript" src="jquery-1.6.4.min.js"></script>
<script type="text/javascript">
$(function () {
$("#btnA").click(function () {
var url = "http://192.168.1.112:8889/LaserControlService/web/Add?jsoncallback=?";
url += "&x=" + $("#num1").val() + "&y=" + $("#num2").val();
getData(url);
});
});
function getData(url)
{
$.ajax({
type: "get",dataType: "json",url: url,success: function (returndata) {
$("#content").html(returndata);
}
});
}
</script>
</head>
<body>
<form id="form1" runat="server">
Number1
<input id="num1" name="num1" type="text" style="width: 80px" />
Number2
<input id="num2" name="num2" type="text" style="width: 80px" />
<input type="button" id="btnA" value="Add" />
<br />
<div>
Result</div>
<div id="content">
</div>
<br />
</form>
</body>
</html>
运行效果：
调用成功：
这样调用WCF是不是很简单呢？
原文链接：https://www.f2er.com/ajax/162870.html