Question

我有一个以xml数据返回的Web服务。它只需要一个参数userid。它工作正常，直到我想从该Web服务检索数据并附加到我的C＃asp.net中。当我运行脚本时，总是会出现错误 - （“找不到贷款”），其中实际上有相同参数输入的结果。

我已经

了

在我的脚本中硬编码。（用户ID-'18450' ）
在脚本
检查了我的网络服务的网址

但我不知道为什么不从Web服务获取数据。请帮忙。

我的网络服务代码：

  using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Web.Services;
    using System.Data;
    using System.Data.SqlClient;
    using System.Web.Script.Serialization;
    using System.Web.Script.Services;

namespace WebAppTest2
{
    /// <summary>
    /// Summary description for WebService1
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. 
    [System.Web.Script.Services.ScriptService]
    public class WebService1 : System.Web.Services.WebService
    {

        public class Record
        {
            public int loanid { get; set; }
            //public string daterequested { get; set; }
            public string name { get; set; }
            public string remark { get; set; }
            //public string loandisplayid { get; set; }
            public string status { get; set; } 
            public string nothing { get; set; }

        }

        [WebMethod]
        public string HelloWorld()
        {
            return "Hello World";
        }

        [WebMethod()]
        public List<Record> GetData(int userid)
        {

            SqlConnection con = new SqlConnection("Data Source=DIT-NB1260382;Initial Catalog=loansystem;Integrated Security=True");
            con.Open();

            SqlCommand cmd = new SqlCommand("Equipment_ListPendingApproval ", con);
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.Parameters.AddWithValue("@userid", userid);

            SqlDataReader dr = cmd.ExecuteReader();

            List<Record> Record = new List<Record>();

            while (dr.Read())
            {
                Record.Add(new Record()
                {
                    loanid = dr.GetInt32(0),
                    //daterequested = dr.GetString(1),
                    name = dr.GetString(2),
                    //loandisplayid = dr.GetString(3),
                    status = dr.GetString(4),                  
                    remark = dr.GetString(5),


                });
            }

            dr.Close();
            con.Close();
            return Record;
        }
    }
}

我的输出

enter image description here

我在asp.net中的脚本：

<script>
$(document).ready(function () {
    //var userid = JSON.parse(sessionStorage.getItem('userID'));
    var userid = JSON.parse('18450');
    alert(userid);
    $.ajax({

        type: "POST",
        url: "http://localhost:52928/WebService1.asmx/GetData",
        data: JSON.stringify({ userid: userid }),
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (response) {

            var loans = response.d;


            $.each(loans, function (index, Record) {
                var loanid = this.loanid;
                //construct your html here
                var loanListDiv = "";
                loanListDiv += "<li>";
                loanListDiv += "<a href='requestCollectionPopup.html' data-rel='dialog' data-transition='pop' class='ui-btn ui-btn-icon-right ui-icon-carat-r'>";
                loanListDiv += "<span class='ui-li-count ui-body-inherit' style='border:none; color:#800080; background-color:transparent;'>";
                loanListDiv += Record.status;
                loanListDiv += "</span>";
                loanListDiv += Record.loanid;
                loanListDiv += "</a>";
                loanListDiv += "</li>";

                $("#loansAll").append(loanListDiv).trigger("create");
            });

        },

        error: function (response) {
            alert("No loans Found");
        }
    });
});
</script>

enter image description here

Answer 1

看起来data方法的$.ajax()参数无效。它的名称为userid，而不是getUserID，对。
同时调查Chrome开发工具（F12）中的“网络”标签，查看服务器实际响应此AJAX请求的内容。
同时type＆＃34; POST＆＃34;当你能够通过GET请求获得回复时看起来很可疑

Answer 2

从您需要将该服务标记为脚本服务的任何服务调用Web服务。将以下属性添加到Web服务并尝试。

[System.Web.Script.Services.ScriptService]

请参阅以下链接

http://www.dotnetjalps.com/2010/08/calling-aspnet-web-service-from-jquery.html http://www.codeproject.com/Articles/529847/Calling-ASP-NET-WebService-from-jQuery

绑定失败来自asp.net中的Web服务

2 个答案: