WCF 错误:405 方法不允许 [英] WCF error : 405 Method Not Allowed
问题描述
对这个问题发疯.我有一个包含 2 个项目的解决方案，其中一个是带有 jquery ajax 调用的普通旧 html，而另一个是 WCF 服务.html 页面将向 WCF 服务发出 ajax 调用以获取 json 字符串并将其用于显示目的.
Going nuts with this issue. I have a solution with 2 projects, one of them is a plain old html with jquery ajax call while the other is a WCF service. The html page will issue a ajax call to the WCF service to get a json string and use it for display purpose.
现在的问题是，每当我在调试模式下运行时，html 页面和 WCF 都会以不同的端口启动.这在我执行测试时为我创造了一个跨域问题(即在 Firefox 中使用调用类型 = OPTIONS 获得 405 Method Not Allowed 错误).我会三重检查我的 ajax 脚本上的调用方法，WCF 服务是相同的 (GET).
Now the issue is whenever i run in debug mode, both the html page and the WCF will be started with different port. And this has created a cross-origin issue for me when i perform testing (i.e. getting a 405 Method Not Allowed error with the calling type = OPTIONS in Firefox). I'd triple check the call method on my ajax script and the WCF service is the same (GET).
我会搜索谷歌，但发现要么我必须安装扩展程序，要么在 IIS 上执行一些配置，我发现这很麻烦，因为我正在做的事情很简单.按照一个示例，我将在 web.config 中添加以下配置，但它不起作用:
I'd search google but found that either i have to install a extension or perform some configuration on IIS, which i found cumbersome since what i'm doing is something simple. Following one example, I'd add in the following configuration in my web.config but it didn't work:
<system.serviceModel>
<bindings>
<webHttpBinding>
<binding name="crossDomain" crossDomainScriptAccessEnabled="true" />
</webHttpBinding>
</bindings>
<behaviors>
<endpointBehaviors>
<behavior name="MobileService.webHttpBehavior">
<webHttp />
</behavior>
</endpointBehaviors>
<serviceBehaviors>
<behavior name="MyServiceBehavior">
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="true"/>
</behavior>
</serviceBehaviors>
</behaviors>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
<services>
<service name="MobileService.SimpleMemberInfo" behaviorConfiguration="MyServiceBehavior">
<endpoint address="" binding="webHttpBinding" contract="MobileService.IMemberInfo" bindingConfiguration="crossDomain" behaviorConfiguration="MobileService.webHttpBehavior">
</endpoint>
</service>
</services>
</system.serviceModel>
<system.webServer>
<httpProtocol>
<customHeaders>
<add name="Access-Control-Allow-Origin" value="*" />
<add name="Access-Control-Allow-Methods" value="GET" />
<add name="Access-Control-Allow-Headers" value="Content-Type, Accept" />
</customHeaders>
</httpProtocol>
<modules runAllManagedModulesForAllRequests="true"/>
<directoryBrowse enabled="true"/>
</system.webServer>
有没有人有办法摆脱这个烦人的问题?
Any one has any idea to get rid of this annoying issue?
补充一点，我正在使用 VS Studio 2012 附带的 IIS Express 运行调试
Just to add, I'm running the debug with IIS Express that comes together with the VS Studio 2012
添加 WCF 代码并更新 web.config
[ServiceContract]
public interface IMemberInfo
{
[WebInvoke(Method = "GET",
BodyStyle = WebMessageBodyStyle.Wrapped,
ResponseFormat = WebMessageFormat.Json
)]
[OperationContract]
string GetMemberInfoById();
// TODO: Add your service operations here
}
我的脚本:
$(document).ready(function () {
$.ajax("http://localhost:32972/SimpleMemberInfo.svc/GetMemberInfoById", {
cache: false,
beforeSend: function (xhr) {
$.mobile.showPageLoadingMsg();
},
complete: function () {
$.mobile.hidePageLoadingMsg();
},
contentType: 'application/json',
dataType: 'json',
type: 'GET',
error: function () {
alert('Something awful happened');
},
success: function (data) {
var s = "";
s += "<li>" + data + "</li>";
$("#myList").html(s);
}
});
});
推荐答案
您需要使用 JSONP 进行跨域调用以绕过浏览器限制，并使用 crossDomainScriptAccessEnabled 设置为 true 以绕过服务器.这里的答案中有一个很好的例子:如何避免jquery ajax中使用wcf服务的跨域策略?
You need to use JSONP for a cross-domain call to get round the browser restrictions, and to update your web.config with crossDomainScriptAccessEnabled set to true to get round server ones. There's a good example in the answer here: how to avoid cross domain policy in jquery ajax for consuming wcf service?
您可能还会遇到 GET 请求的问题.尝试此处列出的修复程序:使 WCF Web 服务处理 GET 请求
You may also have a problem with GET requests. Try the fixes outlined here: Making a WCF Web Service work with GET requests
总而言之，您需要一个看起来像这样的 web.config:
Altogether, you want a web.config that looks something like this:
<bindings>
<webHttpBinding>
<binding name="crossDomain" crossDomainScriptAccessEnabled="true" />
</webHttpBinding>
</bindings>
<behaviors>
<endpointBehavior>
<behavior name="restBehavior">
<webHttp />
</behavior>
</endpointBehavior>
<serviceBehavior>
<behavior name="MyServiceBehavior">
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="true"/>
</behavior>
</serviceBehavior>
</behaviors>
<services>
<service name="..." behaviorConfiguration="MyServiceBehavior">
<endpoint address="" binding="webHttpBinding" bindingConfiguration="crossDomain"
contract="..." behaviorConfigurations="restBehavior" />
</service>
</services>
(请注意，服务和端点都附加了行为，分别允许 webHttp 调用和 httpGet 调用，并且绑定显式启用了跨域访问).
(Note that both the service and the endpoint have behaviours attached, allowing webHttp calls and httpGet calls respectively, and that the binding has crossDomain access explicitly enabled).
... 一个装饰成这样的服务方法:
... a service method decorated like this:
[ServiceContract]
public interface IMyService
{
[WebGet] // Required Attribute to allow GET
[OperationContract]
string MyMethod(string MyParam);
}
... 以及使用 JSONP 的客户端调用:
... and a client call using JSONP:
<script type="text/javascript">
$(document).ready(function() {
var url = "...";
$.getJSON(url + "?callback=?", null, function(result) { // Note crucial ?callback=?
// Process result
});
});
</script>
这篇关于WCF 错误:405 方法不允许的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
