Question

我试图通过jquery ajax传递数据，但面临问题。我正在以json格式获取数据

数据：＆＃39; {用户：＆＃39; + JSON.stringify（user）+＆＃39;}＆＃39;

像这样

user = {Tdcno: "tw5", Revision: "0", Revision_Date: "22/11/2017", P_Group: "Chain Link", Prod_Desc: "GI wire for chain link", …}

但在此步骤处理之后，它会直接失败。任何帮助都会对解析表示赞赏。

 <script type="text/javascript">
        $(function () {
     $(document).on("click", "[id*=btnFrmSubmit]", function () {
                alert("hi");        
                var user = {};
     user.Tdcno = $("[id*=Tdc_No]").val();
     $.ajax({
                    type: "POST",
                    url: "TDC.aspx/SaveFrmDetails",
                    data: '{user: ' + JSON.stringify(user) + '}',
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",
                    success: function (response) {
                        alert("User has been added successfully.");
                        window.location.reload();
                    }
     });
                return false;
    });
        });
    </script>

c＃code

 [WebMethod]
    [ScriptMethod]
    public  void SaveFrmDetails(User user)
    {
  using (SqlConnection con = new SqlConnection(connectionString))
        {
            using (SqlCommand cmd = new SqlCommand("INSERT INTO TDC_PRODUCT1 VALUES(@Tdc_No, @Revision,@Revision_Date,@P_Group,@Prod_Desc,@N_I_Prd_Std,@Appln,@Frm_Supp,@Created_Date,@Created_By)"))
            {
                cmd.CommandType = CommandType.Text;
 cmd.Connection = con;
                con.Open();
                cmd.ExecuteNonQuery();
                con.Close();
            }
        }
    }

Answer 1

永远不要手动创建json字符串。与使用JSON.stringify序列化它相比，它更容易出错并且工作量更大。

'{user: ' + JSON.stringify(user) + '}'生成无效的json，因为未正确引用属性user

对整个数据对象进行字符串化

data: JSON.stringify({user:user}})

试图通过面向问题的jquery ajax传递数据

1 个答案: