Javascript 填充JS ajax servlet
我对ajax和java中的图表制作非常陌生。我对使用ChartJS为web报表创建动态仪表板非常感兴趣。我想问一下,如何使用ajax和来自servlet响应的数据填充“图表标签”和“数据集” 我尝试了一些研究,测试了一些关于ajax和ChartJS的教程,但我似乎无法让它工作Javascript 填充JS ajax servlet,javascript,ajax,servlets,chart.js,Javascript,Ajax,Servlets,Chart.js,我对ajax和java中的图表制作非常陌生。我对使用ChartJS为web报表创建动态仪表板非常感兴趣。我想问一下,如何使用ajax和来自servlet响应的数据填充“图表标签”和“数据集” 我尝试了一些研究,测试了一些关于ajax和ChartJS的教程,但我似乎无法让它工作 <html> <head> <title>Bar Chart</title> <script s
<html>
<head>
<title>Bar Chart</title>
<script src="../Chart.js"></script>
<meta name = "viewport" content = "initial-scale = 1, user-scalable = no">
<style>
canvas{
}
</style>
</head>
<body>
<canvas id="canvas" height="450" width="600"></canvas>
<script>
var barChartData = {
labels : [,"January","February","March","April","May","June","July"],
datasets : [
{
fillColor : "rgba(220,220,220,0.5)",
strokeColor : "rgba(220,220,220,1)",
data : [65,59,90,81,56,55,40]
},
{
fillColor : "rgba(151,187,205,0.5)",
strokeColor : "rgba(151,187,205,1)",
data : [28,48,40,19,96,27,100]
}
]
}
var myLine = new Chart(document.getElementById("canvas").getContext("2d")).Bar(barChartData);
</script>
</body>
</html>
条形图
帆布{
}
var barChartData={
标签:[,“一月”、“二月”、“三月”、“四月”、“五月”、“六月”、“七月”],
数据集:[
{
填充颜色:“rgba(220220,0.5)”,
strokeColor:“rgba(2201)”,
数据:[65,59,90,81,56,55,40]
},
{
填充颜色:“rgba(151187205,0.5)”,
strokeColor:“rgba(151187205,1)”,
数据:[28,48,40,19,96,27100]
}
]
}
var myLine=新图表(document.getElementById(“canvas”).getContext(“2d”)).Bar(barChartData);
找到了答案,我只是在一些教程上做了实验。。。
这个正在工作
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="js/jquery-1.10.2.min.js" ></script>
<script src="js/Chart.js"></script>
<title>JSP Page</title>
</head>
<body>
<h1>Hello World!</h1>
<br />
<br/>
<br/>
<canvas id="canvas" height="450" width="700"></canvas>
</body>
</html>
<script>
$( document ).ready(function(){
GetCountryList();
});
function GetCountryList(){
var data2 = "";
$.ajax({
type: "POST",
url: "qs",
data: "{\"type\":" + "\"country\""+
"}",
contentType: "application/x-www-form-urlencoded",
dataType: "json",
success: function(response) {
var resultsArray = (typeof response) == 'string' ? eval('(' + response + ')') : response;
var data2 = new Array();
for(var i=0; i<resultsArray.length;i++){
data2[i] = resultsArray[i].workgroup;
var barChartData = {
labels : data2,
datasets : [
{
fillColor : "rgba(220,220,220,0.5)",
strokeColor : "rgba(220,220,220,1)",
data : [65,59,90,81,56,55,40,80]
}
]
};
}
var myLine = new Chart(document.getElementById("canvas").getContext("2d")).Bar(barChartData);
}
});
}
</script>
JSP页面
你好,世界!
$(文档).ready(函数(){
GetCountryList();
});
函数GetCountryList(){
var data2=“”;
$.ajax({
类型:“POST”,
网址:"qs",,
数据:“{\'类型\”:“+”国家\”
"}",
contentType:“application/x-www-form-urlencoded”,
数据类型:“json”,
成功:功能(响应){
var resultsArray=(响应类型)='string'?eval('('+response+')):响应;
var data2=新数组();
对于(var i=0;i