在DataTable上表示Json对象数据对我不起作用
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我正在研究一个java Web应用程序(Spring Frame工作)。命中某个URL后,将创建一个Json对象。我可以访问这些数据,然后我可以使用console.log来访问它。但我需要以表格格式显示这个Json对象,该对象是一个超过1000条记录的数组。我不确定的是如何做到这一点。我已经用过这个教程(https://datatables.net/examples/ajax/null_data_source.html)来做一些事情,但我没有成功。我对这个概念很新,我的问题可能真的是转储。但我想知道也许我可以从这里得到一些帮助。
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:f="http://xmlns.jcp.org/jsf/core"
xmlns:p="http://primefaces.org/ui"
>
<h:head>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src ="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://cdn.datatables.net/1.10.16/js/jquery.dataTables.min.js"></script>
<link rel="stylesheet" href="resource/css/jquery.dataTables.min.css"></link>
</h:head>
<h:body>
<button id="processData">ProcessData</button>
<div id="wrapper">
<div id="header">
<h2>List of processed data</h2>
</div>
</div>
<table id="dataTable" class="display" cellspacing="0" width="100%">
<thead>
<tr>
<th>ID1</th>
<th>ID2</th>
<th>Number Of Matching Terms</th>
<th>Matching Terms </th>
<th>Original Terms in Data Source One</th>
<th>Original Terms in Data Source Two</th>
<th>Acceptance Action</th>
<th>Decline Action</th>
</tr>
</thead>
<tfoot>
<tr>
<th>ID1</th>
<th>ID2</th>
<th>Number Of Matching Terms</th>
<th>Matching Terms </th>
<th>Original Terms in Data Source One</th>
<th>Original Terms in Data Source Two</th>
<th>Acceptance Action</th>
<th>Decline Action</th>
</tr>
</tfoot>
</table>
<script src="js/mainJs.js"></script>
</h:body>
这是我的js代码:
$(document).ready(function(){
$("#processData").click(function (){
$.getJSON('http://localhost:8080/gtlc/PVJson', function(data){
console.log(data);
});
var table = $('#dataTable').DataTable( {
"ajax": data,
"columnDefs": [ {
"targets": -1,
"data": null,
"defaultContent": "<button>Click!</button>"
} ]
});
})
});
</html>
当我看到我的控制台时,我可以看到以下内容:
这是我的json对象的一个小样本
"records": [{
"id1": 1200314690100003429,
"id2": 1045,
"matchingTerms": ["adaptor"],
"orginalTermsTable1": ["AC ADAPTOR FOR JDE", "www.greenlightcorp.net", "AC ADAPTOR FOR JDE", ""],
"orginalTermsTable2": ["Greenlight Technologies, Inc.", "GRC Adaptor for People Soft", "Customized software for SAP, therefore version not specified"]
}, {
"id1": 1200314690100003429,
"id2": 1046,
"matchingTerms": ["adaptor"],
"orginalTermsTable1": ["AC ADAPTOR FOR JDE", "www.greenlightcorp.net", "AC ADAPTOR FOR JDE", ""],
"orginalTermsTable2": ["Greenlight Technologies, Inc.", "GRC Adaptor for Oracle", "Customized software for SAP, therefore version not specified"]
}]
我想知道是否有人可以给我一些提示,告诉我如何抓住json对象并在dataTable上表示它
答案
问题是在ajax请求之后,DataTable被初始化了一微秒。
发送Ajax请求时,可能需要1,2,3或10秒才能返回数据...因此,在Ajax响应返回之前,data
是未定义的。
在回调函数中移动DataTable初始化它应该工作。
$(document).ready(function() {
var data = {
"records": [{
"id1": 1200314690100003429,
"id2": 1045,
"matchingTerms": ["adaptor"],
"orginalTermsTable1": ["AC ADAPTOR FOR JDE", "www.greenlightcorp.net", "AC ADAPTOR FOR JDE", ""],
"orginalTermsTable2": ["Greenlight Technologies, Inc.", "GRC Adaptor for People Soft", "Customized software for SAP, therefore version not specified"]
}, {
"id1": 1200314690100003429,
"id2": 1046,
"matchingTerms": ["adaptor"],
"orginalTermsTable1": ["AC ADAPTOR FOR JDE", "www.greenlightcorp.net", "AC ADAPTOR FOR JDE", ""],
"orginalTermsTable2": ["Greenlight Technologies, Inc.", "GRC Adaptor for Oracle", "Customized software for SAP, therefore version not specified"]
}]
};
var table = $('#dataTable').DataTable({
"data": data.records,
"columns": [{
"data": "id1"
},
{
"data": "id2"
},
{
"data": "matchingTerms",
"render": function(data, type, row, meta) {
return data.length;
}
},
{
"data": "matchingTerms"
},
{
"data": "orginalTermsTable1"
},
{
"data": "orginalTermsTable2"
},
{
"data": "",
"render": function(data, type, row, meta) {
return "<button>Click</button>";
}
},
{
"data": "",
"render": function(data, type, row, meta) {
return "<button>Click</button>";
}
}
]
});
});
更好的方案:
$(document).ready(function() {
var table = $('#dataTable').DataTable({
"ajax": {
"url" : "http://localhost:8080/gtlc/PVJson",
"dataSrc" : "records"
},
"columns": [{
"data": "id1"
},
{
"data": "id2"
},
{
"data": "matchingTerms",
"render": function(data, type, row, meta) {
return data.length;
}
},
{
"data": "matchingTerms"
},
{
"data": "orginalTermsTable1"
},
{
"data": "orginalTermsTable2"
},
{
"data": "",
"render": function(data, type, row, meta) {
return "<button>Click</button>";
}
},
{
"data": "",
"render": function(data, type, row, meta) {
return "<button>Click</button>";
}
}
]
});
});
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