运行工具：VS2019
- AjaxService.svc 服务代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Activation;
using System.ServiceModel.Web;
using System.Text;
namespace WCF_Demo
{
[ServiceContract(Namespace = "")]
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
//js前端访问服务，必须添加
[JavascriptCallbackBehavior(UrlParameterName = "jsoncallback")]
public class AjaxService
{
// 要使用 HTTP GET，请添加 [WebGet] 特性。(默认 ResponseFormat 为 WebMessageFormat.Json)
// 要创建返回 XML 的操作，
// 请添加 [WebGet(ResponseFormat=WebMessageFormat.Xml)]，
// 并在操作正文中包括以下行:
// WebOperationContext.Current.OutgoingResponse.ContentType = "text/xml";
[OperationContract]
[WebGet(ResponseFormat =WebMessageFormat.Json)]
public string GetFristService()
{
// 在此处添加操作实现
return "hello,这个是我的第一个WCF服务";
}
// 在此处添加更多操作并使用 [OperationContract] 标记它们
}
}
2.HtmlPage1.html ，前端调用
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script type="text/javascript" src="JS/jquery-1.4.1.min.js"></script>
<script type="text/javascript">
$(document).ready(function () {
$("#btnSubmit1").click(function () {
$.getJSON("https://localhost:44394/AjaxService.svc/GetFristService?jsoncallback=?", function (data) {
alert(data);
var vData = JSON.stringify(data);
alert(vData);
});
});
$("#btnSubmit2").click(function () {
$.ajax({
type: "get",
dataType: "json",
url: "https://localhost:44394/AjaxService.svc/GetFristService?jsoncallback=?",
success: function (returndata) {
$("#content").html(returndata);
}
});
});
});
</script>
</head>
<body>
<div id="content"></div>
<input id="btnSubmit1" type="button" value="调用方法1" />
<input id="btnSubmit2" type="button" value="调用方法2" />
</body>
</html>
3 . web.config 配置文件
<?xml version="1.0" encoding="utf-8"?>
<!--
有关如何配置 ASP.NET 应用程序的详细信息，请访问
https://go.microsoft.com/fwlink/?LinkId=169433
-->
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.5" />
<httpRuntime targetFramework="4.5" />
<authentication mode="Forms"></authentication>
</system.web>
<system.codedom>
<compilers>
<compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701" />
<compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=\"Web\" /optionInfer+" />
</compilers>
</system.codedom>
<system.serviceModel>
<bindings>
<webHttpBinding>
<binding name="AjaxServiceBind" crossDomainScriptAccessEnabled="true" />
</webHttpBinding>
</bindings>
<behaviors>
<endpointBehaviors>
<behavior name="WCF_Demo.AjaxServiceAspNetAjaxBehavior">
<enableWebScript />
</behavior>
</endpointBehaviors>
<serviceBehaviors>
<behavior name="" > <!--解决当前已禁用此服务的元数据发布-->
<serviceMetadata httpGetEnabled="true" />
</behavior>
</serviceBehaviors>
</behaviors>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
<services>
<service name="WCF_Demo.AjaxService">
<endpoint address="" behaviorConfiguration="WCF_Demo.AjaxServiceAspNetAjaxBehavior" binding="webHttpBinding" bindingConfiguration="AjaxServiceBind" name="AjaxService" contract="WCF_Demo.AjaxService" />
</service>
</services>
</system.serviceModel>
</configuration>
注意: 这是运行服务的url, 显示发布成功的。
最后运行点击调用按钮，提示下面错误信息：
找了好久都不知道错到哪里，求各位赐教，有经验的朋友麻烦帮我看下，谢谢了
