的jQuery

var user = {
    "name": name,
    "country": country,
};

$.ajax({
    type: 'POST',
    traditional: true,
    url: 'Default.aspx/Submit',
    data: JSON.stringify(user),
    contentType: "application/json; charset=utf-8",
    dataType: "text",
    success: function (msg) {
      alert("Success!");
    },
    error: function () {
      alert("Error!");
    }
});

ASP.NET

[WebMethod]
public static bool Submit(string json)
{
    // do something
    return true;
}

我设置：

traditional = true以避免递归编码（不确定是否需要）
数据为string，而非object
dataType为text而非json

但我仍然从服务器收到此错误：

无效的Web服务调用，缺少参数值：json

我想这是因为它找不到“json”参数的匹配名称。但我不明白如果我发送一个普通字符串，我必须如何命名函数参数。

Answer 1

这是我用来使用AJAX发布到数据库的代码。

//保存请求的变量 var request;

//绑定到表单的提交事件 $（＆＃34;＃form1中＆＃34）。提交（函数（事件）{

// Abort any pending request
if (request) {
    request.abort();
}
//local variables
var $form = $(this);

// select and cache all the fields
var $inputs = $form.find("input, select, button, textarea");

// Serialize the data in the form
var serializedData = $form.serialize();

// Let's disable the inputs for the duration of the Ajax request.
// Note: we disable elements AFTER the form data has been serialized.
// Disabled form elements will not be serialized.
$inputs.prop("disabled", true);

// Fire off the request to php file
request = $.ajax({
    url: yourdomain-asp-page,
    type: "post",
    data: serializedData
});

// Callback handler that will be called on success
request.done(function (response, textStatus, jqXHR){
    //replace form with feedback text


// Callback handler that will be called on failure
request.fail(function (jqXHR, textStatus, errorThrown){
    // Log the error to the console
    console.error(
        "The following error occurred: "+
        textStatus, errorThrown
    );
});

// Callback handler that will be called regardless
// if the request failed or succeeded
request.always(function () {
    // Reenable the inputs
    $inputs.prop("disabled", false);
});

// Prevent default posting of form
event.preventDefault();

}）;

使用ajax发送纯字符串

的jQuery

ASP.NET

1 个答案: