2

我最近在复习我的 jQuery，在查看帖子时遇到了一个问题，我无法从 wcf 服务获得响应，我经常收到 405 - 方法不允许。我的请求对我来说看起来不错，我想知道我是否错过了一些重要但显而易见的事情，为什么会发生这种情况。

这是正在使用的邮政编码：

 $.ajax({
     type: "POST",
     url: "http://localhost:59929/CustomerService/GetCustomers",
     data: null,
     ContentType: "application/json",
     dataType: "json",
     success: function (msg) {
         alert("Called and got: " + msg);
     },
     error: function (result) {
         alert('Service call failed: ' + result.status + '' + result.statusText);
     }
 });

wcf代码如下：

[ServiceContract]
public interface ICustomerService
{   

    [OperationContract]
    [WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.Wrapped, ResponseFormat = WebMessageFormat.Json)]
    List<Customer> GetCustomers();

    [OperationContract]
    OperationStatus InsertCustomer(Customer cust);
}

配置如下：

<?xml version="1.0"?>
<configuration>

  <system.web>
    <compilation debug="true" targetFramework="4.0" />
  </system.web>
  <system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
          <serviceMetadata httpGetEnabled="true"/>
          <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="true"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
  </system.serviceModel>
 <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>

</configuration>

Fiddler 将原始帖子显示为：

POST http://localhost:59929/CustomerService/GetCustomers HTTP/1.1
Host: localhost:59929
Connection: keep-alive
Content-Length: 0
Origin: http://localhost:59513
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.60 Safari/537.1
Accept: application/json, text/javascript, */*; q=0.01
Referer: http://localhost:59513/LearnJQuery2/ajax/ajax_post.htm
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-GB,en-US;q=0.8,en;q=0.6
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3

并且 fiddler 也确认了 405 响应。

4

3 回答 3

1

您从哪个域拨打电话？这可能是由同源策略引起的。如果是这种情况，请尝试使用 JSONP 而不是 JSON。

另外，您是否尝试过像Fiddler这样的工具来准确查看请求/响应是什么？这可以为正在发生的事情提供一些线索。

于 2012-08-06T14:03:26.290 回答
1

好吧，我看了很长一段时间，然后意识到这并没有什么问题，而是一个问题:) 所以问题解决了。

首先，它们确实必须来自具有相同端口和协议的同一个域，但事实并非如此。我将我的服务移动到我的应用程序中并适当地配置了绑定。下一部分是正确地装饰您的 WCF 服务，因此这里是正确配置服务的代码。

客户服务.cs

[ServiceContract]
public interface ICustomerService
{
    [OperationContract]
    [WebInvoke(
        Method = "POST" ,
        BodyStyle = WebMessageBodyStyle.Wrapped,
        ResponseFormat = WebMessageFormat.Json)]
    List<JSONCustomer> GetCustomers();
}

客户服务.cs

[AspNetCompatibilityRequirements(RequirementsMode
    = AspNetCompatibilityRequirementsMode.Allowed)]
public class CustomerService : ICustomerService
{
    public List<JSONCustomer> GetCustomers()
    {
        return new List<JSONCustomer> 
        { 
            new JSONCustomer {id = 1, FirstName = "john", LastName = "Doe"},
            new JSONCustomer {id = 2, FirstName = "jane", LastName = "Doe"},        
        };
    }
}

网页配置

<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="EndpBehavior">
          <webHttp/>
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <services>
      <service behaviorConfiguration="ServiceBehavior" 
               name="CustomerService">
        <endpoint address="" 
                  binding="webHttpBinding"
                  contract="ICustomerService" 
                  behaviorConfiguration="EndpBehavior"/>
      </service>
    </services>

    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
  </system.serviceModel>

</configuration>

接下来是使用的 ajax 代码（整个网页）：

<!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>
        <title>Ajax Post</title>
        <script type="text/javascript" src="../scripts/jquery-1.7.2.js"></script>
        <script type="text/javascript">
            $(document).ready(function () {
                $('#HelpButton').click(function () {
                    $.post('../CustomerService.svc/GetCustomers', null,
                        function (data) {
                            var custs = data["GetCustomersResult"];
                            var text = '';

                            $(custs).each(function () {
                                text += '<span>' + this.FirstName + ' ' + this.LastName + '</span><br/>';
                            });

                            $('#OutputDiv').html(text);
                        }
                    , 'json');
                });
            });
        </script>
    </head>
    <body>
        <input id="HelpButton" type="button" value="Press me"/>
        <div id="OutputDiv" />
    </body>
</html>

JSONCustomer.cs

[DataContract]
public class JSONCustomer
{
    [DataMember]
    public int id { get; set; }

    [DataMember]
    public string FirstName { get; set; }

    [DataMember]
    public string LastName { get; set; }
}

我真的希望那些现在遇到问题的人能找到帮助，重要的是你要注意 jquery 中的所有东西，绑定，装饰和 ajax 代码一点点小失误，它就是行不通的。

于 2012-08-06T20:00:54.903 回答
0

这看起来像是服务器配置问题，调用者无法将方法视为 wcf 服务的一部分。此链接提供了一些有用的提示，说明如何解决导致 405 错误的最常见原因。我希望它有所帮助：http ://social.msdn.microsoft.com/Forums/en-US/wcf/thread/31d3f1aa-28b6-4bd7-b031-73b7e7588e6d/

于 2012-08-06T14:35:51.470 回答