Warning: file_get_contents(/data/phpspider/zhask/data//catemap/2/ajax/6.json): failed to open stream: No such file or directory in /data/phpspider/zhask/libs/function.php on line 167

Warning: Invalid argument supplied for foreach() in /data/phpspider/zhask/libs/tag.function.php on line 1116

Notice: Undefined index: in /data/phpspider/zhask/libs/function.php on line 180

Warning: array_chunk() expects parameter 1 to be array, null given in /data/phpspider/zhask/libs/function.php on line 181
Javascript DataTables不显示数据_Javascript_Ajax_Json_Datatables - Fatal编程技术网

Javascript DataTables不显示数据

Javascript DataTables不显示数据,javascript,ajax,json,datatables,Javascript,Ajax,Json,Datatables,我正在尝试jQuery控件。问题是我无法显示数据 HTML是: <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DataTablesTest.aspx.cs" Inherits="JsonTest.DataTablesTest" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="se

我正在尝试jQuery控件。问题是我无法显示数据

HTML是:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DataTablesTest.aspx.cs" Inherits="JsonTest.DataTablesTest" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
  <title>DataTables Test</title>
  <script src="Scripts/jquery-1.10.2.min.js"></script>
  <link href="Content/DataTables/css/jquery.dataTables.css" rel="stylesheet" />
  <script src="Scripts/DataTables/jquery.dataTables.js"></script>
  <link href="Content/Site.css" rel="stylesheet" />
</head>

<script>
  var d = [
    { "Id": 3, "ActivityID": 91, "OperationType": 0, "UserID": 4183, "Comments": "", "ActionDate": "2006-03-19T12:26:01.673" },
    { "Id": 4, "ActivityID": 91, "OperationType": 4, "UserID": 4183, "Comments": "", "ActionDate": "2006-03-19T12:26:01.673" },
    { "Id": 5, "ActivityID": 92, "OperationType": 0, "UserID": 5688, "Comments": "", "ActionDate": "2006-03-20T12:05:40.563" }
  ];

  $(document).ready(function () {

    $('#example').dataTable({
      "ajax": {
        "url": "WebService1.asmx/GetData",
        "type": "POST",
        "dataSrc": "",
        "contentType": "application/json; charset=utf-8"
      },
      //"data": d,
      "columns": [
          { "data": "Id" },
          { "data": "ActivityID" },
          { "data": "OperationType" },
          { "data": "UserID" },
          { "data": "Comments" },
          { "data": "ActionDate" }
      ]
    });


    var table = $('#example').DataTable();
    alert('There are' + table.data().length + ' row(s) of data in this table');

  });
</script>

<body>
  <form id="form1" runat="server">
    <div>

      <table id="example" class="display">
        <thead>
          <tr>
            <th>ActivityHistoryID</th>
            <th>AH_ActivityID</th>
            <th>AH_OperationType</th>
            <th>AH_UserID</th>
            <th>AH_Comments</th>
            <th>AH_TimeStamp</th>
          </tr>
        </thead>
        <tbody>
        </tbody>
      </table>
    </div>
  </form>
</body>
</html>
它很好用。
d
变量是我使用firefox->developer->network->xhr->response对话框从服务中获取的JSON数据

我读了很多帖子,尝试了很多东西,但都没能成功。 有什么帮助吗? 谢谢

编辑: 服务代码:

namespace JsonTest
{
    /// <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
    {
        [WebMethod]
        public string GetData()
        {
            var list = ActivityHistory.GetAll(); // List<ActivityHistory>
            var s = Newtonsoft.Json.JsonConvert.SerializeObject(list);

            return s;
            //return "{\"aaData\":" + s + "}";
        }
    }
}
namespace JsonTest
{
/// 
///WebService 1的摘要说明
/// 
[WebService(命名空间=”http://tempuri.org/")]
[WebServiceBinding(ConformsTo=WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
//要允许使用ASP.NET AJAX从脚本调用此Web服务,请取消注释以下行。
[System.Web.Script.Services.ScriptService]
公共类WebService 1:System.Web.Services.WebService
{
[网络方法]
公共字符串GetData()
{
var list=ActivityHistory.GetAll();//list
var s=Newtonsoft.Json.JsonConvert.SerializeObject(列表);
返回s;
//返回“{\“aaData\”:“+s+”}”;
}
}
}
编辑2015年7月21日: 我在HTML代码中做了一些更改,但它有一个小错误。加载时,我在页面顶部看到了table元素的标题(ActivityHistoryID、AH_ActivityID、AH_OperationType、AH_UserID、AH_注释、AH_时间戳)。在那之后,它工作得很好(对于60000行!!!)

新更改的代码为:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DataTablesTest.aspx.cs" Inherits="JsonTest.DataTablesTest" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
  <title>DataTables Test</title>
  <script src="Scripts/jquery-1.10.2.min.js"></script>
  <link href="Content/DataTables/css/jquery.dataTables.css" rel="stylesheet" />
  <script src="Scripts/DataTables/jquery.dataTables.js"></script>
  <link href="Content/Site.css" rel="stylesheet" />

  <script>

    $(document).ready(function () {

      $.ajax({
        type: "post",
        url: "WebService1.asmx/getdata",
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (data) {
          var myData = $.parseJSON(data.d);

          $('#example').DataTable({
            "data": myData,
            "columns": [
                { "data": "Id" },
                { "data": "ActivityID" },
                { "data": "OperationType" },
                { "data": "UserID" },
                { "data": "Comments" },
                { "data": "ActionDate" }
            ]
          });
        }
      });

    });
</script>
</head>

<body>
  <form id="form1" runat="server">
    <div>
      <table id="example" class="display">
        <thead>
          <tr>
            <th>ActivityHistoryID</th>
            <th>AH_ActivityID</th>
            <th>AH_OperationType</th>
            <th>AH_UserID</th>
            <th>AH_Comments</th>
            <th>AH_TimeStamp</th>
          </tr>
        </thead>
        <tbody>
        </tbody>
      </table>
    </div>
  </form>
</body>
</html>

数据表测试
$(文档).ready(函数(){
$.ajax({
类型:“post”,
url:“WebService1.asmx/getdata”,
contentType:“应用程序/json;字符集=utf-8”,
数据类型:“json”,
成功:功能(数据){
var myData=$.parseJSON(data.d);
$('#示例')。数据表({
“数据”:myData,
“栏目”:[
{“数据”:“Id”},
{“数据”:“活动ID”},
{“数据”:“操作类型”},
{“数据”:“用户ID”},
{“数据”:“评论”},
{“数据”:“ActionDate”}
]
});
}
});
});
活动历史ID
啊_ActivityID
AHU操作类型
AH_用户ID
阿胡评论
时间戳
我最后的希望是使用JQuery 1.10.2,而不是datatables站点示例中的1.11.1

这是第三天的尝试,但我仍然无法理解

编辑2015年7月22日

这就是有效的代码。远非例子

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DataTablesTestWorking.aspx.cs" Inherits="JsonTest.DataTablesTestWorking" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
  <title>DataTables Test</title>
  <script src="Scripts/jquery-1.11.3.min.js"></script>
  <link href="Content/DataTables/css/jquery.dataTables.css" rel="stylesheet" />
  <script src="Scripts/DataTables/jquery.dataTables.js"></script>
  <link href="Content/Site.css" rel="stylesheet" />

  <script>


    $(document).ready(function () {
      $('#example').hide();

      $.ajax({
        type: "POST",
        url: "WebService1.asmx/GetData",
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (data) {
          $('#example').show();

          var myData = $.parseJSON(data.d);

          $('#example').DataTable({
            "data": myData,
            "columns": [
                { "data": "Id" },
                { "data": "ActivityID" },
                { "data": "OperationType" },
                { "data": "UserID" },
                { "data": "Comments" },
                { "data": "ActionDate" }
            ]
          });
        }
      });


    });
  </script>
</head>

<body>
  <form id="form1" runat="server">
    <div>
      <table id="example" class="display">
        <thead>
          <tr>
            <th>ActivityHistoryID</th>
            <th>AH_ActivityID</th>
            <th>AH_OperationType</th>
            <th>AH_UserID</th>
            <th>AH_Comments</th>
            <th>AH_TimeStamp</th>
          </tr>
        </thead>
        <tbody>
        </tbody>
      </table>
    </div>
  </form>
</body>
</html>

数据表测试
$(文档).ready(函数(){
$(“#示例”).hide();
$.ajax({
类型:“POST”,
url:“WebService1.asmx/GetData”,
contentType:“应用程序/json;字符集=utf-8”,
数据类型:“json”,
成功:功能(数据){
$(“#示例”).show();
var myData=$.parseJSON(data.d);
$('#示例')。数据表({
“数据”:myData,
“栏目”:[
{“数据”:“Id”},
{“数据”:“活动ID”},
{“数据”:“操作类型”},
{“数据”:“用户ID”},
{“数据”:“评论”},
{“数据”:“ActionDate”}
]
});
}
});
});
活动历史ID
啊_ActivityID
AHU操作类型
AH_用户ID
阿胡评论
时间戳

修改ajax调用-使其异步

"ajax": {
        "url": "WebService1.asmx/GetData",
        "type": "POST",
        "async" : false,
        "contentType": "application/json; charset=utf-8"
      }
现在,只有在服务完成ajax请求后,数据才会被绑定。 这对我有用

在服务器端代码中,使用printwriter将json数据作为字符串发送

PrintWriter out = resp.getWriter(); 
result.put("iTotalRecords", total); 
result.put("iTotalDisplayRecords", totalRecordCount); 
result.put("aaData", array); 
resp.setContentType("text/jsonp"); 
out.print(result);
或者使用gson将对象列表转换为json数组
e、 g

注意:aaData需要设置,否则您的数据将不会被绑定。

根据选项
contentType:'application/json;调用ASP.NET AJAX web方法确实需要charset=UTF-8'
类型:'POST'

但是,为了发送JSON编码的参数而不是URL编码的参数,您需要使用选项将参数编码为JSON格式的字符串

$('#example').dataTable({
  "ajax": {
    "url": "WebService1.asmx/GetData",
    "type": "POST",
    "contentType": "application/json; charset=utf-8",
    "dataType": "json",
    "data": function ( d ) {
       return JSON.stringify( d );
    },
    "dataSrc": "d",
  },
  "columns": [
      { "data": "Id" },
      { "data": "ActivityID" },
      { "data": "OperationType" },
      { "data": "UserID" },
      { "data": "Comments" },
      { "data": "ActionDate" }
  ]
});

函数被声明为datatable,但在调用中我看到$('#example').datatable(),可能区分大小写?我想d应该是json对象,像这样想{'d':[…]}不。不是它,但谢谢。@sakir:你是什么意思?如果我不使用该服务并使用var d,它可以正常工作。“processing”:true,“serverSide”:true,以他的例子为例。数据类型似乎不需要设置jsonaobject
aaData
,因为初始化选项中使用了
“dataSrc”:“
。另外,由于使用了客户端处理模式,因此不需要
iTotalRecords
iTotalDisplayRecords
。如果删除contentType行,则会出现错误:“DataTables警告:table id=example-无效的JSON响应。有关此错误的更多信息,请参阅“@shadow,您可以检查响应吗?”(firefox->developer->network->response)当您收到该消息并将其发布在下面的评论中时。此答案中的代码不起作用。我没有收到任何响应。我参考上次编辑的代码。如果删除contentType行,则响应为“@shadow,我已经更新了我的答案,结果证明你的思路是正确的。@Gyrocode:谢谢你,朋友。我将尝试我找到的一个或两个其他控件,因为老实说,我对datatables有点失望。我花了近3天的时间进行了大量搜索,才在一个示例中显示数据。
 Gson gson = new GsonBuilder().setPrettyPrinting().create();
  String json = gson.toJson(dataTableObject);
  out.print(json);
$('#example').dataTable({
  "ajax": {
    "url": "WebService1.asmx/GetData",
    "type": "POST",
    "contentType": "application/json; charset=utf-8",
    "dataType": "json",
    "data": function ( d ) {
       return JSON.stringify( d );
    },
    "dataSrc": "d",
  },
  "columns": [
      { "data": "Id" },
      { "data": "ActivityID" },
      { "data": "OperationType" },
      { "data": "UserID" },
      { "data": "Comments" },
      { "data": "ActionDate" }
  ]
});