我正在开发一个java web应用程序(Spring Frame work)。一旦点击某个 URL，就会创建一个 Json 对象。我可以访问这些数据，并且能够对其进行 console.log。但我需要显示这个 Json 对象，它是一个以表格格式包含 1000 多个记录的数组。我不确定的是如何去做。我已经使用本教程( https://datatables.net/examples/ajax/null_data_source.html )做了一些事情，但没有成功。我对这个概念很陌生，我的问题可能真的很垃圾。但我想知道也许我可以从这里获得一些帮助。
<!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>
当我查看控制台时，我可以看到以下内容:
这是我得到的错误
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关于如何获取 json 对象并将其表示在数据表上的提示
最佳答案
问题是 DataTable 在 ajax 请求后一微秒被初始化。
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。
将 DataTable 初始化移到回调函数中应该可以工作。
$(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>";
}
}
]
});
});
更好的解决方案:
$(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>";
}
}
]
});
});
关于javascript - 在 DataTable 上表示 Json 对象数据对我来说不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/49121589/