asp.net 发送的ajax 调用不到WebMethod 代码如下

Question

asp.net 发送的ajax 调用不到WebMethod ,调试的时候就没进入该方法内。求各位大仙帮忙看看，谢谢了……

前台代码如下：所在页面op_ckbm.aspx

$.ajax({
                    type: 'post',
                    url: 'op_ckbm.aspx/dw',
                    data: "{'bm_id':'" + $("#bm_id").val() + "','bm_mc':'" + $("#bm_mc").val() + "'}",
                    contentType: "application/json; charset=utf-8",
                    datatype: "json",
                    success: function(data) {
                        document.getElementById("jsz").innerHTML = data.d;
                    },
                    error: function() {
                    }
                });

后台代码如下：所在页面op_ckbm.aspx 代码文件op_ckbm.aspx.cs

    [WebMethod]
    public static string dw(string bm_id, string bm_mc)
    {
        string dw_mc = "";
        DataTable bm_table = DBHelper.DataTables("select dw_mc from bm_view_join_dw_view where bm_id='" + bm_id + "' and is_vaild=1 and is_current=1");
        string dw_id = "";
        if (bm_table.Rows.Count > 0)
        {
            dw_mc = bm_table.Rows[0][0].ToString() + ";" + bm_mc;
        }
        return dw_mc;
    }

Answer 1

谢谢了，知道什么地方出错了，  var url1 = "user/op_ckbm.aspx?&bm_mc=" + bm_mcc;            //alert(url1);                $.setupJMPopups({                    screenLockerBackground: '#003366',                    screenLockerOpacity: '0.3'                });                $.openPopupLayer({                    name: 'usr_select',                    width: 450,                    url: url1                    //"user/op_ckbm.aspx?&bm_mc="+bm_mc                }); 用了这个插件，弹出窗口后再用ajax调用，路径写错了，没有请求到那个地址，非常感谢……

Answer 2

没人知道原理吗？没人知道原理吗？很常见的问题呀！