我有以下 jQuery ajax 代码，它调用 ASP.NET webservice 将数据保存在数据库中。
function SaveDataToParty() {
var mode = "Save";
var srno = 0;
var partyname = $("#p1").val();
var partyemail = $("#p2").val();
var partyphone = $("#p3").val();
var partyaddress = $("#p4").val();
var webMethod = "../Service/DatabaseHandling.asmx/SaveDataToParty";
var parameters = "{mode:'" + mode + "',srno:'" + srno + "',partyname:'" + partyname + "',partyemail:'" + partyemail + "',partyphone:'" + partyphone + "',partyaddress:'" + partyaddress + "'}";
alert(parameters);
$.ajax({
type: "POST",
url: webMethod,
async:false,
data: JSON.stringify(parameters),
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
alert(msg.d);
},
error: function (e) {
alert(e.statusText);
}
});
}
此调用遵循 asp.net 中的 webservice 方法
<WebMethod()> _
Public Function SaveDataToParty(mode As String, srno As String, partyname As String, partyemail As String, partyphone As String, partyaddress As String) As Boolean
'this will start connection and set transaction to it
Dim cnstr As String = String.Empty
cnstr = System.Configuration.ConfigurationManager.ConnectionStrings("DPMTConnectionString").ConnectionString
Dim cn As New SqlConnection(cnstr)
Dim tran As SqlTransaction
cn.Open()
tran = cn.BeginTransaction
Try
'this will handle sp coding
Dim dcmd As New SqlCommand
dcmd.Connection = cn
dcmd.CommandType = CommandType.StoredProcedure
'sp execution for party entry
If mode = "Save" Then
dcmd.Parameters.Add("@mode", SqlDbType.NVarChar).Value = "ADD"
dcmd.Parameters.Add("@srno", SqlDbType.Int).Value = 0
End If
If mode = "Update" Then
dcmd.Parameters.Add("@mode", SqlDbType.NVarChar).Value = "UPDATE"
dcmd.Parameters.Add("@srno", SqlDbType.Int).Value = srno
End If
dcmd.Parameters.Add("@partyname", SqlDbType.NVarChar).Value = partyname
dcmd.Parameters.Add("@partyemail", SqlDbType.NVarChar).Value = partyemail
dcmd.Parameters.Add("@partyphone", SqlDbType.NVarChar).Value = partyphone
dcmd.Parameters.Add("@partyaddress", SqlDbType.NVarChar, 500).Value = partyaddress
dcmd.CommandText = "sp_add_update_delete_party"
dcmd.Transaction = tran
dcmd.ExecuteNonQuery()
tran.Commit()
Return True
Catch ex As Exception
Return False
Finally
cn.Close()
End Try
End Function
该错误仅在 Internet Explorer 10 中生成。错误是“无效的 Web 服务调用，参数缺失值：\u0027mode\u0027”
它在谷歌浏览器中运行良好。
有什么解决办法吗？
编辑 1
我已经用 JSON.stringify 和 async:false 更新了这个，但在 IE10 上仍然没有成功。
编辑 2
在 IE10 开发者工具中，在网络选项卡中，显示以下信息。
Key Value
Request POST /hemal/ASPNET/DPMT/Service/DatabaseHandling.asmx/SaveDataToParty HTTP/1.1
Accept application/json, text/javascript, */*; q=0.01
Content-Type application/json; charset=utf-8
X-Requested-With XMLHttpRequest
Referer http://localhost/hemal/ASPNET/DPMT/ADMIN/Purchase_Add.aspx
Accept-Language en-IN,en-GB;q=0.8,en;q=0.5,gu;q=0.3
Accept-Encoding gzip, deflate
User-Agent Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0)
Host localhost
Content-Length 0
DNT 1
Connection Keep-Alive
Cache-Control no-cache
Cookie ASP.NET_SessionId=mhp35fbfn3vzoalqvdild5hb; loginstatus=ok
我很震惊为什么 content-length 为 0。这意味着什么都没有发送。