WCF 请求:"传入的消息具有意外的消息格式 'Raw'.该操作的预期消息格式为 'Xml';'Json'" [英] WCF request: "The incoming message has an unexpected message format 'Raw'. The expected message formats for the operation are 'Xml'; 'Json'"

问题描述

我尝试使用 AJAX 从 ASPX 页面调用 WCF 服务.

I try to call WCF service from ASPX page with AJAX.

我收到错误消息:传入的消息具有意外的消息格式 'Raw'.该操作的预期消息格式是 'Xml'; 'Json'.这可能是因为尚未在绑定上配置 WebContentTypeMapper. 有关详细信息，请参阅 WebContentTypeMapper 的文档."

I get the error: "The incoming message has an unexpected message format 'Raw'. The expected message formats for the operation are 'Xml'; 'Json'. This can be because a WebContentTypeMapper has not been configured on the binding. See the documentation of WebContentTypeMapper for more details."

代码如下.(不带参数请求调用成功！)

Code is below. (Without parameters request calling successfully!)

服务方式:

[OperationContract]
[System.ServiceModel.Web.WebInvoke(Method = "POST",
   RequestFormat = WebMessageFormat.Json,
   ResponseFormat = System.ServiceModel.Web.WebMessageFormat.Json)]
string SimpleRequest(string fullname);

Web.config:

Web.config:

<?xml version="1.0"?>
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.0" />
</system.web>
<system.serviceModel>
<behaviors>
  <serviceBehaviors>
    <behavior name="ServiceBehavior">
      <serviceMetadata httpGetEnabled="true"/>
      <serviceDebug includeExceptionDetailInFaults="true"/>
    </behavior>
  </serviceBehaviors>
  <endpointBehaviors>
    <behavior name="ServiceAspNetAjaxBehavior">
      <enableWebScript />
    </behavior>
  </endpointBehaviors>
</behaviors>
<services>
  <service behaviorConfiguration="ServiceBehavior" name="GenesysService.GenesysService">
    <endpoint address=""
 binding="webHttpBinding"
 contract="GenesysService.IGenesysService"
  behaviorConfiguration="ServiceAspNetAjaxBehavior"> 
<identity>
        <dns value="localhost"/>
      </identity>
    </endpoint>
    <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
  </service>
</services>
<serviceHostingEnvironment 
 multipleSiteBindingsEnabled="true"
aspNetCompatibilityEnabled="true" />
<standardEndpoints>
  <webScriptEndpoint>
    <standardEndpoint name="" crossDomainScriptAccessEnabled="true" />
  </webScriptEndpoint>
</standardEndpoints>
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
<directoryBrowse enabled="true"/>
<httpProtocol>
  <customHeaders>
    <add name="Access-Control-Allow-Origin" value="*"/>
    <add name="Access-Control-Allow-Methods" value="GET, POST"/>
  </customHeaders>
</httpProtocol>
</system.webServer>
</configuration>`

AJAX 请求:

$.ajax({
type: "POST",
url: 'http://localhost:56428/GenesysService.svc/SimpleRequest',
data: JSON.stringify({fullname: "fullname"}),
dataType: "json",
crossDomain: true,
success: function (response) {
    alert('success!');
    alert(response);
},
error: function (xhr, ajaxOptions, thrownError) {
    alert('error!');
    alert(xhr.responseText);
}
});

我发现了同样的错误.但后来我添加了下一个字符串:

I found the same mistake. But then I add the next string:

contentType: "application/json"

我收到错误消息:OPTIONS <...> 405(不允许的方法)XMLHttpRequest 无法加载 <...>.无效的 HTTP 状态码 405 "

I get error: "OPTIONS <...> 405 (Method Not Allowed) XMLHttpRequest cannot load <...>. Invalid HTTP status code 405 "

推荐答案

Ajax 调用中的 Method Not Allowed 响应是由于 Javascript 单源策略:

The Method Not Allowed response in your Ajax call is due to the Javascript single origin policy:

http://en.wikipedia.org/wiki/Same-origin_policy

要从您的页面调用服务，它需要使用相同的端口和协议，或者您可以使用 JSONP.

To call the service from your page it needs to be on the same port and protocol, or you can use JSONP.

更多信息在这里:http://www.sitepoint.com/jsonp-examples/

这篇关于WCF 请求:&amp;quot;传入的消息具有意外的消息格式 &amp;#39;Raw&amp;#39;.该操作的预期消息格式为 &amp;#39;Xml&amp;#39;;&amp;#39;Json&amp;#39;&amp;quot;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！