上一回,我们实现了从后台传递数据,在图表中展示,而图表的大部分配置都实在JS中控制的,
个人有个想法,我们应该可以将图表的配置都拿到后台去,没有在实际开发中使用过,不知道是否好用,这里简单尝试下
(PS:试了下,可行,但是不知道实际项目中可用否?)
1. 构造实体
我的想法是,在这里构造一个和Highcharts配置一样的一个实体:

-
package org.ygy.highcharts.domain;
-
-
import java.util.List;
-
-
public class Highchart implements java.io.Serializable {
-
-
private static final long serialVersionUID = -5880168163194932425L;
-
-
private Chart chart;
-
-
private Title title;
-
-
private XAxis xAxis;
-
-
private YAxis yAxis;
-
-
private List<Serie> series;
-
-
public Chart getChart() {
-
return chart;
-
}
-
-
public void setChart(Chart chart) {
-
this.chart = chart;
-
}
-
-
public Title getTitle() {
-
return title;
-
}
-
-
public void setTitle(Title title) {
-
this.title = title;
-
}
-
-
public XAxis getxAxis() {
-
return xAxis;
-
}
-
-
public void setxAxis(XAxis xAxis) {
-
this.xAxis = xAxis;
-
}
-
-
public YAxis getyAxis() {
-
return yAxis;
-
}
-
-
public void setyAxis(YAxis yAxis) {
-
this.yAxis = yAxis;
-
}
-
-
public List<Serie> getSeries() {
-
return series;
-
}
-
-
public void setSeries(List<Serie> series) {
-
this.series = series;
-
}
-
-
}
其他的实体都是类似的结构
2. 初始化
我们为了方便,直接在Servlet中初始化下
-
@Override
-
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
-
throws ServletException, IOException {
-
req.setCharacterEncoding("UTF-8");
-
resp.setContentType("text/html;charset=utf-8");
-
-
Chart chart = new Chart();
-
chart.setRenderTo("container");
-
chart.setType(ChartType.column);
-
-
Title title = new Title();
-
title.setText("我的第1个Highcarts图表!");
-
-
XAxis xAxis = new XAxis();
-
xAxis.setCategories(new String[] { "my", "first", "chart" });
-
-
YAxis yAxis = new YAxis();
-
Title yTitle = new Title();
-
yTitle.setText("Y轴标题");
-
yAxis.setTitle(yTitle);
-
-
Serie data_jane = new Serie("Jane", new Integer[] { 1, 0, 4 });
-
Serie data_john = new Serie("Jone", new Integer[] { 5, 7, 3 });
-
-
List<Serie> series = new ArrayList<Serie>();
-
series.add(data_jane);
-
series.add(data_john);
-
-
Highchart highchart = new Highchart();
-
highchart.setChart(chart);
-
highchart.setTitle(title);
-
highchart.setxAxis(xAxis);
-
highchart.setyAxis(yAxis);
-
highchart.setSeries(series);
-
-
Gson gson = new Gson();
-
-
PrintWriter out = resp.getWriter();
-
out.print(gson.toJson(highchart));
-
out.flush();
-
out.close();
-
}
3. 修改页面
-
<%@ page language="java" contentType="text/html; charset=UTF-8"
-
pageEncoding="UTF-8"%>
-
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
-
<html>
-
<head>
-
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
-
<title>Hello Highcharts !</title>
-
-
<script src="js/jquery.min.js"></script>
-
<script src="js/highcharts.js"></script>
-
-
<script type="text/javascript">
-
$(function() {
-
//从后台获取json格式的数据
-
$.getJSON("go" , function(data) {
-
//初始化chart
-
var chart = new Highcharts.Chart(data);
-
});
-
-
});
-
</script>
-
</head>
-
<body>
-
<!-- 定义图表的容器 -->
-
<div id="container" style="width: 100%; height: 400px;"></div>
-
</body>
-
</html>
好了,运行下

好了,这样的话有个好处,就是所有的信息都可以存到数据库中,做成可配置的,
可以做一个管理界面去修该,而不是去修改JS
但是,可能会增大传输的数据量,希望有经验的同学可以提供点儿建议