Question

我想从数据库中刷新表的内容，因此当用户按下刷新按钮时，我将通过php从数据库中检索数据，并将此数据发送到jquery，该jquery可以将检索到的数据插入表中，但是我可以成功检索数据无法将其插入数据表这是从数据库检索数据的php代码；

    elseif ($id=='refresh_logs'){

	  $shortname=$_GET['shortname'];
     	$data_array = array();
    $bul="select radacct.UserName,radacct.AcctStartTime,radacct.AcctStopTime,radacct.AcctOutputOctets,radacct.AcctInputOctets,AcctSessionTime,FramedIPAddress,os.mac,nas.shortname,os_platform,acctupdatetime ,RadAcctId from radacct Left join os on os.username=radacct.UserName and os.AcctSessionid=radacct.AcctSessionId left join nas on radacct.NASIPAddress = nas.nasname where nas.shortname='$shortname' limit 1";
	//echo($bul);
	$result2 = $con2->query($bul);
	 while($row = $result2->fetch_assoc()) {
		  $upload=round($row['AcctOutputOctets']/1024/1024,2);
		 
		  $download=round($row['AcctInputOctets']/1024/1024,2);
		 if ($row['AcctSessionTime']<60) {
				 	$sure=$row['AcctSessionTime']." Sec";
				}
		 else {
					$gun=floor($row['AcctSessionTime']/86400);
					$saat=floor(($row['AcctSessionTime'] - $gun*86400)/3600);
					$dakika=floor(($row['AcctSessionTime'] - $gun*86400 - $saat*3600)/60);
					$sure="";
					if ($dakika>0){
					  $sure=$dakika." Min";
	 				}
					if ($saat>0){
	 					$sure=$saat." Hour ".$sure;
					}
					if ($gun>0){
						$sure=$gun." Day ".$sure;
				  }
				}
		 $row['upload']=$upload;
		 $row['download']=$download;
		 $row['sure']=$sure;
	   array_push($data_array,$row);
	   
	   
	   
	   }

			$data_array=json_encode($data_array);	
	echo $format = '{
"data":['.$data_array.']}';
	
}

这是将检索到的数据插入表中的jQuery代码

$('.refresh').click(function(e) {
    e.preventDefault();


    var string ='';
    var nas_shortname=$('#nas_shortname').val();

    var jsonData = $.ajax({ async: false,
      url: "Save.php?id=refresh_logs&shortname="+nas_shortname,

      dataType: "json"

      }).responseText;
        //}

var obj = $.parseJSON(jsonData);
$('#resultt').html('<img src="dist/img/ajax_loader_red_128.gif"/>');
$('#my_logs tbody ').remove();







$.fn.dataTable.ext.errMode = 'throw';
var table = $('#my_logs').DataTable({
"processing": true,
"serverSide": true,
"ajax": obj,
"sScrollY": "300px",
"scrollX":true,
"paging": false,
"bFilter": false,
"bInfo": false,
"searching": false,
"bSort" : false,
"fixedColumns":   true
});


$('#resultt').html('OK');
}); 



});

我在控制台中遇到此错误

DataTables警告：表id = my_logs-无效的JSON响应。有关此错误的更多信息，请参见http://datatables.net/tn/1 在J（VM2914 jquery.dataTables.min.js：74）

这是我从服务器端发送到jQuery的json数据

[{"UserName":"root2","AcctStartTime":"2018-10-18 15:52:52","AcctStopTime":null,"AcctOutputOctets":"0","AcctInputOctets":"0","AcctSessionTime":"0","FramedIPAddress":"192.168.33.3","CallingStationId":"192.168.33.3","shortname":"radius2_nas1","os_platform":null,"acctupdatetime":"2018-10-18 15:52:52","RadAcctId":"1","upload":0,"download":0,"sure":"0 Sec"},{"UserName":"root","AcctStartTime":"2018-10-18 16:07:00","AcctStopTime":null,"AcctOutputOctets":"0","AcctInputOctets":"0","AcctSessionTime":"0","FramedIPAddress":"192.168.33.3","CallingStationId":"192.168.33.3","shortname":"radius2_nas1","os_platform":null,"acctupdatetime":"2018-10-18 16:07:00","RadAcctId":"2","upload":0,"download":0,"sure":"0 Sec"}]

Answer 1

从PHP方面来看，您的$data_array应该如下所示：

json_encode()之后，您的响应数据必须如下：

{"draw":1,"recordsTotal":4827,"recordsFiltered":4827,"data":[{"UserName":"root2","AcctStartTime":"2018-10-18 15:52:52","AcctStopTime":null,"AcctOutputOctets":"0","AcctInputOctets":"0","AcctSessionTime":"0","FramedIPAddress":"192.168.33.3","CallingStationId":"192.168.33.3","shortname":"radius2_nas1","os_platform":null,"acctupdatetime":"2018-10-18 15:52:52","RadAcctId":"1","upload":0,"download":0,"sure":"0 Sec"},{"UserName":"root","AcctStartTime":"2018-10-18 16:07:00","AcctStopTime":null,"AcctOutputOctets":"0","AcctInputOctets":"0","AcctSessionTime":"0","FramedIPAddress":"192.168.33.3","CallingStationId":"192.168.33.3","shortname":"radius2_nas1","os_platform":null,"acctupdatetime":"2018-10-18 16:07:00","RadAcctId":"2","upload":0,"download":0,"sure":"0 Sec"}]}

您还可以检查 json在https://jsonlint.com/上是否有效

如果您未能根据需要成功检索服务器端数据表，则您可以遵循 Datatable's Serverside example

从php检索数据到jquery并将其插入到DataTable中

1 个答案: