从 jQuery 调用 .asmx webservice:不允许 GET? [英] Calling .asmx webservice from jQuery: GET is not allowed?

问题描述

我有一个简单的页面.加载时，它调用 Web 服务，然后出现以下错误:

I have a simple page. On load, it calls a web service, and then I get the following error:

an attempt was made to call the method using a GET request, which is not allowed

我的 JS 代码:

    function getTutors() {
        var url = '<%= ResolveUrl("~/services/tutorservice.asmx/gettutors") %>';
        $.ajax({
            type: "GET",
            data: "{'data':'" + 'test-data' + "'}",
            url: url,
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: function (d) {
                alert('succes');
                return d;
            },
            error: function () {
                alert('fejl');
            }
        });
    }

    $(document).ready(function () {
        var tutors = getTutors();
        var locations = [];
    }

我的网络服务:

    [ScriptService]
public class tutorservice : System.Web.Services.WebService {

    public tutorservice () {

        //Uncomment the following line if using designed components 
        //InitializeComponent(); 
    }

    [WebMethod]
    public List<Tutor> gettutors(string data)
    {
        var tutorManager = new TutorManager();
        return tutorManager.GetTutorApplicants();
    }

}

我尝试删除 contentTypes，即使没有 data 变量，它仍然给出相同的错误.

I have tried to remove the contentTypes, and even without the data variable, it still gives the same error.

我最好的猜测是应该删除某些 contentType/dataType，但我也尝试过.

My best guess is some contentType / dataType should be removed, but I have tried that as well.

关于为什么我会收到此错误的任何想法?

Any ideas about why I get this error?

推荐答案

我能想到两个选择:

1) 在 AJAX 调用中使用 POST 而不是 GET:

1) Use a POST instead of a GET in your AJAX call:

type: "POST",

或 2) 如果您必须使用 GET，请配置您的 Web 服务方法以允许使用 GET:

or 2) If you must use a GET, configure your web service method to allow GETS:

[WebMethod]
[ScriptMethod(UseHttpGet = true)]
public List<Tutor> gettutors(string data)
{
    var tutorManager = new TutorManager();
    return tutorManager.GetTutorApplicants();
}

并通过 web.config 允许获取:

and allow GETS via web.config:

<webServices>
  <protocols>
    <add name="HttpGet"/>
    <add name="HttpPost"/>
  </protocols>
</webServices>

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