如何使用 jQuery 在 ASP.NET WebService 中通过 AJAX 传递数据参数

发布于 2024-12-01 10:12:51 字数 941 浏览 0 评论 0原文

当我运行不包含 parameters 的方法时，一切正常，但是当添加 parameters 运行该方法时，我收到 500 Internal Server Error 。我不确定我做错了什么，感谢您的帮助。

无法加载资源：服务器响应状态为 500（内部服务器错误）

下面是我当前使用的代码：

  [WebMethod]
    public static string UploadNewImage(string filePath,string ImageTitle,string ImageDescription,string ImageKeywords)
    {
    }
var parameters = "{'filePath':'" + fileuploadpathValue.val() + "','ImageTitle':'" +
                titleValue.val() + "','ImageDescription':'" + descriptionValue.val() + "','ImageKeywords:'" +
                    keywordsValue.val() + "'}";
 $.ajax({
                type: "POST",
                url: "../MainService.asmx/UploadNewImage",
                contentType: "application/json; charset=utf-8",
                data: parameters,
                dataType: "json",
                success: AjaxSucceeded,
                error: AjaxFailed
            });

原文

Everything works fine when I run the method without including parameters, but when the method is run with parameters added, I get a 500 Internal Server Error. I am not sure what I am doing wrong, thanks for any help.

Failed to load resource: the server responded with a status of 500 (Internal Server Error)

Included below is the code that I am currently using:

  [WebMethod]
    public static string UploadNewImage(string filePath,string ImageTitle,string ImageDescription,string ImageKeywords)
    {
    }
var parameters = "{'filePath':'" + fileuploadpathValue.val() + "','ImageTitle':'" +
                titleValue.val() + "','ImageDescription':'" + descriptionValue.val() + "','ImageKeywords:'" +
                    keywordsValue.val() + "'}";
 $.ajax({
                type: "POST",
                url: "../MainService.asmx/UploadNewImage",
                contentType: "application/json; charset=utf-8",
                data: parameters,
                dataType: "json",
                success: AjaxSucceeded,
                error: AjaxFailed
            });

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

暖阳 2024-12-08 10:12:51

将您的参数更改为如下：

var parameters = {
filePath: fileuploadpathValue.val(),
ImageTitle:titleValue.val(),
ImageDescription:descriptionValue.val(),
ImageKeywords:keywordsValue.val()
};

或按如下方式组合它们：

$.ajax({
                type: "POST",
                url: "../MainService.asmx/UploadNewImage",
                contentType: "application/json; charset=utf-8",
                data:  {
                    filePath: fileuploadpathValue.val(),
                     ImageTitle:titleValue.val(),
                     ImageDescription:descriptionValue.val(),
                     ImageKeywords:keywordsValue.val()
                     },
                dataType: "json",
                success: AjaxSucceeded,
                error: AjaxFailed
            });

还要确保这里的 val() 没有一个为 null，也就是说您没有在上述任何控件上设置值，如果这是 csae，您将收到错误就像“Null 传递到不接受 null 值的参数”

change your parameters to as follows:

var parameters = {
filePath: fileuploadpathValue.val(),
ImageTitle:titleValue.val(),
ImageDescription:descriptionValue.val(),
ImageKeywords:keywordsValue.val()
};

or combine them as follows:

$.ajax({
                type: "POST",
                url: "../MainService.asmx/UploadNewImage",
                contentType: "application/json; charset=utf-8",
                data:  {
                    filePath: fileuploadpathValue.val(),
                     ImageTitle:titleValue.val(),
                     ImageDescription:descriptionValue.val(),
                     ImageKeywords:keywordsValue.val()
                     },
                dataType: "json",
                success: AjaxSucceeded,
                error: AjaxFailed
            });

also make sure that none of the val() here is null that is you dint have a value set on any of the above control if that is the csae you will get an error like "Null passed into parameter which does not accept null values"

回复收藏 0 原文

永言不败 2024-12-08 10:12:51

问题出在您的 Json 格式中，

这在我的系统中有效，

 var parameters = '{"filePath": "'+fileuploadpathValue.val()+'","ImageTitle": "'+titleValue.val()+'","ImageDescription": "'+descriptionValue.val()+'","ImageKeywords": "'+keywordsValue.val()+'"}';
        $.ajax({
            type: "POST",
            url: "../MainService.asmx/UploadNewImage",
            contentType: "application/json; charset=utf-8",
            data: parameters,
            dataType: "json",
            success: AjaxSucceeded,
            error: AjaxFailed
        });
    });

如果您需要更多信息，请告诉我

The problem is in your Json format,

This is working in my system,

 var parameters = '{"filePath": "'+fileuploadpathValue.val()+'","ImageTitle": "'+titleValue.val()+'","ImageDescription": "'+descriptionValue.val()+'","ImageKeywords": "'+keywordsValue.val()+'"}';
        $.ajax({
            type: "POST",
            url: "../MainService.asmx/UploadNewImage",
            contentType: "application/json; charset=utf-8",
            data: parameters,
            dataType: "json",
            success: AjaxSucceeded,
            error: AjaxFailed
        });
    });

Let me know if u need more in that

回复收藏 0 原文

~没有更多了~