Question

我试图使用ajax调用web服务，即时获取内部500错误。你能告诉我不确定我做错了什么，我可以毫无问题地调用web方法。

JQUERY AJAX CALL

<script type="text/javascript">

function LoginVailid() {

    $.ajax({
        url: "http://localhost:49301/AppService.asmx/LoggonAuthentication",
        contentType: "application/json; charset=utf-8",
        data: "{}",
        dataType: "jsonp",
        jsonp: "callback",
        crossDomain: true,
        success: function (json) {
            alert(json.d);
        },
        error: function () {
            alert("Hit error fn!");
        }
    });
}
</script>

WEBSERVICE METHOD

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]

[System.Web.Script.Services.ScriptService]
public class Service1 : System.Web.Services.WebService
{

    [WebMethod]
    [ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
    public string LoggonAuthentication()
    {
        return "Hello World";
    }

}

Answer 1

试试此代码

[WebMethod]
[ScriptMethod(UseHttpGet = true, XmlSerializeString=false, ResponseFormat = ResponseFormat.Json)]
public string LoggonAuthentication(string callback)
{
    return  callback + "({message: 'Hello World'})";
}

此article和this SO question可以提供帮助

用jquery ajax jsonp调用web服务：错误

1 个答案: