Question

我对网络应用程序没有多少经验，就在我认为工作有问题的时候。我在C＃中在线学习了一个演示，然后创建了我自己的简单版本，似乎工作正常。它只需要一些输入并将其传递给Web服务。然后我尝试在更复杂的应用程序中实现类似的Web服务，并且我得到以下错误，但没有明确说明它为什么不起作用：

the server responded with a status of 500 (Internal Server Error)

这是在浏览器调试器中，并没有说明原因。

webservice url：hostlocal：xxxxx / SVC / contact.asmx / ContactMessage

我的网络服务代码如下：

<System.Web.Services.WebService(Namespace:="http://tempuri.org/")> _
<System.Web.Services.WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _
 <ToolboxItem(False)> _
Public Class contact
Inherits System.Web.Services.WebService

<WebMethod()> _
Public Function ContactMessage(ByVal clientProj As String, email As String, message As String) As String


    Dim insert_succes As Integer = load_data("", clientProj, "", "", "", "", "", "", "", "", email, message, "")
    Dim passedValidation As Boolean = True

    ' here you can return a flag which you can handle on client side accordingly
    ' if you need to

    Return If(passedValidation, "1", "0")

End Function

以及调用它的javascript：

var dojoXhr;

 require(["dojo/parser", "dojo/query", "dojo/dom-class", "dojo/dom-style", 
    "dojo/on", "dojo/_base/event",
"dojo/request/xhr", "dijit/form/ValidationTextBox", "dojo/domReady!"],
function (parser, query, domClass, domStyle, on, event, xhr) {

    parser.parse();

    var btnSubmit = document.getElementById('btnSubmit');

    function correctInput(div, td, msg) {
        domStyle.set(div, 'display', '');
        td.innerHTML = msg;
    }

    on(btnSubmit, 'click', function (e) {
        event.stop(e);
        var clientProj = dijit.byId("clientName").get("value");
        var clientKey = dijit.byId("clientKey").get("value");
        var accessToken = dijit.byId("accessToken").get("value");
        var lusername = dijit.byId("lusername").get("value");
        var lpassword = dijit.byId("lpassword").get("value");
        var provid = dijit.byId("provID").get("value");




        var feedback = document.getElementById('feedback');
        var feedbackTD = query('td.feedback')[0];

        domStyle.set(feedback, 'display', 'none');

        if (!validateEmail(lusername)) {
            correctInput(feedback, feedbackTD, 'Please enter a valid email.');
            return;
        }

        var port = document.location.port;
        var xhrPath = '//' + document.location.hostname + (port == (80 || 443) ? '/' : ':' + port + '/') + 'SVC/contact.asmx/ContactMessage';

        var msgbody = {
            clientProj: clientProj,
            clientKey: clientKey,
            accessToken: accessToken,
            lusername: lusername,
            lpassword: lpassword,
            provid: provid
        };

        xhr(xhrPath, {
            headers: { "Content-Type": "application/json; charset=utf-8" },
            method: 'post',
            data: JSON.stringify(msgbody)
        }).then(function (data) {
            if (data == "0") {
                correctInput(feedback, feedbackTD, 'Your message could not be sent.');
                return;
            }
            alert('Bcrap STILL NOT WORKING NOW!');
            // show feedback to the user
            domStyle.set(feedback, 'display', '');
            domStyle.set(document.getElementById('msgBodyOutter'), 'display', 'none');
            feedbackTD.innerHTML = "Message was sent successfully.";
        });
    })
});

Answer 1

您的服务可以通过一些异常处理来捕获错误并将其写入事件日志（或其他内容），以便您可以看到正在发生的事情。或者，通过Visual Studio在调试模式下运行它并发出测试 - 它应该在断点处捕获并允许您逐步查看问题所在。

Answer 2

我弄清楚问题是什么，它与xhr函数有关。基本上传递的参数必须与后面代码中的名称和数字相匹配。

调用webservice时，服务器响应状态为500（内部服务器错误）

2 个答案: