研究这个后台分页一天多，特此写个文章记录备忘
jsp页面中有两个需要注意的地方：一个是source中beforeprocessing，另一个是rendergridrows中数据的获取。
说明：grid会向服务器发送以下参数
the Grid sends the following data to the server: sortdatafield - the sort column‘s datafield. sortorder - the sort order - ‘asc‘, ‘desc‘ or ‘‘ pagenum - the current page‘s number when the paging feature is enabled. pagesize - the page‘s size which represents the number of rows displayed in the view. groupscount - the number of groups in the Grid group - the group‘s name. The group‘s name for the first group is ‘group0‘, for the second group is ‘group1‘ and so on. filterscount - the number of filters applied to the Grid filtervalue - the filter‘s value. The filtervalue name for the first filter is "filtervalue0", for the second filter is "filtervalue1" and so on. filtercondition - the filter‘s condition. The condition can be any of these: "CONTAINS", "DOES_NOT_CONTAIN", "EQUAL", "EQUAL_CASE_SENSITIVE", NOT_EQUAL","GREATER_THAN", "GREATER_THAN_OR_EQUAL", "LESS_THAN", "LESS_THAN_OR_EQUAL", "STARTS_WITH", "STARTS_WITH_CASE_SENSITIVE", "ENDS_WITH", "ENDS_WITH_CASE_SENSITIVE", "NULL", "NOT_NULL", "EMPTY", "NOT_EMPTY" filterdatafield - the filter column‘s datafield filteroperator - the filter‘s operator - 0 for "AND" and 1 for "OR"
JSP页面：
<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet" href="../jqwidgets/styles/jqx.base.css" type="text/css" />
<link rel="stylesheet" href="../jqwidgets/styles/jqx.classic.css" type="text/css" />
<script type="text/javascript" src="../jquery-1.11.1.min.js"></script>
<script type="text/javascript" src="../jqwidgets/jqxcore.js"></script>
<script type="text/javascript" src="../jqwidgets/jqxbuttons.js"></script>
<script type="text/javascript" src="../jqwidgets/jqxscrollbar.js"></script>
<script type="text/javascript" src="../jqwidgets/jqxmenu.js"></script>
<script type="text/javascript" src="../jqwidgets/jqxcheckbox.js"></script>
<script type="text/javascript" src="../jqwidgets/jqxlistbox.js"></script>
<script type="text/javascript" src="../jqwidgets/jqxdropdownlist.js"></script>
<script type="text/javascript" src="../jqwidgets/jqxgrid.js"></script>
<script type="text/javascript" src="../jqwidgets/jqxgrid.pager.js"></script>
<script type="text/javascript" src="../jqwidgets/jqxgrid.selection.js"></script>
<script type="text/javascript" src="../jqwidgets/jqxdata.js"></script>
<script type="text/javascript">
$(document).ready(function () {
// prepare the data
var theme = ‘classic‘;
var source =
{
datatype: "json",
datafields: [
{ name: ‘CompanyName‘ },
{ name: ‘ContactName‘ },
{ name: ‘ContactTitle‘ },
{ name: ‘Address‘ },
{ name: ‘City‘ },
{ name: ‘Country‘ }
],
cache: false,
url: ‘data.php‘,
root: ‘Rows‘,
beforeprocessing: function (data) { //根据实际做相应的调整不一定是data[0].TotalRows;建议写个debugger;调试 debugger;
source.totalrecords = data[0].TotalRows;
}
};
var dataadapter = new $.jqx.dataAdapter(source);
// initialize jqxGrid
$("#jqxgrid").jqxGrid(
{
width: 600,
source: dataadapter,
theme: theme,
autoheight: true,
pageable: true,
virtualmode: true,
rendergridrows: function (params) { //这里的返回值需要根绝实际情况作调整。如果params.data获取不到。可以用dataadapter来获取，如dataadapter.recordids[0].*等 debugger;
return params.data;
},
columns:
[
{ text: ‘Company Name‘, datafield: ‘CompanyName‘, width: 250 },
{ text: ‘Contact Name‘, datafield: ‘ContactName‘, width: 200 },
{ text: ‘Contact Title‘, datafield: ‘ContactTitle‘, width: 200 },
{ text: ‘Address‘, datafield: ‘Address‘, width: 180 },
{ text: ‘City‘, datafield: ‘City‘, width: 100 },
{ text: ‘Country‘, datafield: ‘Country‘, width: 140 }
]
});
});
</script>
</head>
<body class=‘default‘>
<div id="jqxgrid"></div>
</body>
</html>
Java后台
获取grid发送的pagesize,pagenum
然后获取数据库数据后返回JSON格式数据即可。
时间： 2024-11-03 02:40:08