可以使用服務器端代碼獲取你的圖表數據。服務器端代碼可以加載本地文件，查詢數據庫或者以其他方式獲取數據。以下這個php例子展示了當頁面被請求時如何從本地的text文件讀取圖表數據。
exampleUsingPHP.html file
此文件中，drawChart()調用jquery的ajax（）函數發送url請求並得到返回的json字符串。url請求的是本地文件getData.php。返回數據實際上是本地文件sampleData.json中定義的一個DataTable。這個DataTable就是用來產生展示在頁面上的餅圖數據。
<html>
<head>
<!--Load the AJAX API-->
<scripttype="text/javascript"src="https://www.google.com/jsapi"></script>
<scripttype="text/javascript"src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<scripttype="text/javascript">
// Load the Visualization API and the piechart package.
google.load('visualization','1',{'packages':['corechart']});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
function drawChart(){
var jsonData = $.ajax({
url:"getData.php",
dataType:"json",
async:false
}).responseText;
// Create our data table out of JSON data loaded from server.
var data =new google.visualization.DataTable(jsonData);
// Instantiate and draw our chart, passing in some options.
var chart =new google.visualization.PieChart(document.getElementById('chart_div'));
chart.draw(data,{width:400, height:240});
}
</script>
</head>
<body>
<!--Div that will hold the pie chart-->
<divid="chart_div"></div>
</body>
</html>
getData.php
當此文件收到請求時，返回本地sampleData.json文件的一份拷貝。
<?php
// This is just an example of reading server side data and sending it to the client.
// It reads a json formatted text file and outputs it.
$string = file_get_contents("sampleData.json");
echo $string;
// Instead you can query your database and parse into JSON etc etc
?>
sampleData.json file
{
"cols":[
{"id":"","label":"Topping","pattern":"","type":"string"},
{"id":"","label":"Slices","pattern":"","type":"number"}
],
"rows":[
{"c":[{"v":"Mushrooms","f":null},{"v":3,"f":null}]},
{"c":[{"v":"Onions","f":null},{"v":1,"f":null}]},
{"c":[{"v":"Olives","f":null},{"v":1,"f":null}]},
{"c":[{"v":"Zucchini","f":null},{"v":1,"f":null}]},
{"c":[{"v":"Pepperoni","f":null},{"v":2,"f":null}]}
]
}
link:
https://developers.google.com/chart/interactive/docs/reference#dataparam
嘗試了一下，成功！！！