Echarts运用
echarts客户端写法：http://echarts.baidu.com/doc/example.html ，下载echarts-2.0.4.jar包，把src里面的js引入到项目里，在放esl.js，echarts-map.js，
echarts-original-map.js，echarts-plain.js到js里面，如图：
echarts服务端端写法：http://www.oschina.net/news/55407/echarts-java-1-0,下载ECharts-1.0.0.jar，gson-2.3.jar，ECharts-all.zip，里面有
ECharts-1.0.0-javadoc.jar，ECharts-1.0.0-sources.jar，都引入到jar文件里面。
echarts作图还是很简单的，想要在客户端写，要先定义一个div，例如：
<%@ page contentType="text/html;charset=UTF-8" language="java" import="java.util.*" pageEncoding="UTF-8" %>
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<script type="text/javascript" src="js/lib/esl.js"></script>
<script type="text/javascript" src="js/lib/echarts-map.js"></script>
<script type="text/javascript" src="js/lib/echarts-original-map.js"></script>
</head>
<body>
<div id="min" style="height: 400px; width:800px; border:1px solid #ccc;padding:10px;"></div>
<script type="text/javascript" languag="javascript">
// 按需加载
// Step:3 conifg ECharts's path, link to echarts.js from current page.
// Step:3 为模块加载器配置echarts的路径，从当前页面链接到echarts.js，定义所需图表路径
require.config({
paths: {
echarts:'./js/echarts',
'echarts/chart/bar' : './js/echarts-map',
'echarts/chart/line': './js/echarts-map',
'echarts/chart/map' : './js/echarts-map' }
});
// Step:4 require echarts and use it in the callback.
// Step:4 动态加载echarts然后在回调函数中开始使用，注意保持按需加载结构定义图表路径
require(
[
'echarts',
'echarts/chart/bar',
'echarts/chart/line',
'echarts/chart/map' ],
//回调函数
DrawEChart
);
//渲染ECharts图表
function DrawEChart(ec) {
//图表渲染的容器对象
var chartContainer = document.getElementById("min");
//加载图表
var myChart = ec.init(chartContainer);
myChart.setOption({
//图表标题
title: {
text: "ECharts简单线形图表及其配置展示实例", //正标题
link: "http://www.stepday.com", //正标题链接 点击可在新窗口中打开
x: "center", //标题水平方向位置
subtext: "From:http://www.stepday.com", //副标题
sublink: "http://www.stepday.com", //副标题链接
//正标题样式
textStyle: {
fontSize:24
},
//副标题样式
subtextStyle: {
fontSize:12,
color:"red"
}
},
//数据提示框配置
tooltip: {
trigger: 'axis' //触发类型，默认数据触发，见下图，可选为：'item' | 'axis' 其实就是是否共享提示框
},
//图例配置
legend: {
data: ['蒸发量', '降水量'], //这里需要与series内的每一组数据的name值保持一致
y:"bottom"
},
//工具箱配置
toolbox: {
show: true, //是否显示工具箱
feature: {
mark: false, // 辅助线标志，上图icon左数1/2/3，分别是启用，删除上一条，删除全部
dataView: { readOnly: false }, // 数据视图，上图icon左数8，打开数据视图
magicType: ['line', 'bar'], // 图表类型切换，当前仅支持直角系下的折线图、柱状图转换，上图icon左数6/7，分别是切换折线图，切换柱形图
restore: true, // 还原，复位原始图表，上图icon左数9，还原
saveAsImage: true // 保存为图片，上图icon左数10，保存
}
},
calculable: true,
//轴配置
xAxis: [
{
type: 'category',
data: ['1月', '2月', '3月', '4月', '5月', '6月', '7月', '8月', '9月', '10月', '11月', '12月'],
name: "月份"
}
],
//Y轴配置
yAxis: [
{
type: 'value',
splitArea: { show: true },
name:"数值"
}
],
//图表Series数据序列配置
series: [
{
name: '蒸发量',
type: 'line',
data: [2.0, 4.9, 7.0, 23.2, 25.6, 76.7, 135.6, 162.2, 32.6, 20.0, 6.4, 3.3]
},
{
name: '降水量',
type: 'line',
data: [2.6, 5.9, 9.0, 26.4, 28.7, 70.7, 175.6, 182.2, 48.7, 18.8, 6.0, 2.3]
}
]
});
}
</script>
<jsp:include page="/jsp/footer.jsp"></jsp:include>
</body>
</html>
服务器端的写法：就是在后台传json数据
例如：做个地图：http://echarts.baidu.com/doc/example/map1.html
/* * 获得地图json数据 */ @Action(value = "getMap", results = { @Result(name = "success", type = "json", params = {
"root","chartsJson"
}) }) public String getMap(){ ItemStyle item=new ItemStyle(); item.normal().label(new Label().show(true)); item.emphasis().label(new Label().show(true)); Option option = new GsonOption(); option.title().subtext("数据来自国家统计局").x(X.center); option.tooltip().trigger(Trigger.item); option.legend().orient(Orient.vertical).x(X.left).data("新闻","论坛","博客","微博"); option.dataRange().min(0).max(2500).x(X.left).y(Y.bottom).calculable(true); option.toolbox().show(true).orient(Orient.vertical).x(X.right).y(Y.center).feature(Tool.saveAsImage); Map map1=new Map("新闻"); map1.mapType("china").selectedMode(SelectedMode.single).itemStyle(item); String[] citis={"北京","天津","上海","重庆","河北","河南","云南","辽宁","黑龙江","湖南","安徽","山东","新疆","江苏","浙江","江西","湖北","广西","甘肃","山西","内蒙古","陕西","吉林","福建","贵州","广东","青海","西藏","四川","宁夏","海南","台湾","香港","澳门"}; List<Data> list=new ArrayList<Data>(); for(String city:citis){ list.add(new Data(city,Math.round(Math.random()*1000))); } map1.data(list.toArray(new Data[0])); Map map2=new Map("论坛"); map2.mapType("china").selectedMode(SelectedMode.single).itemStyle(item); String[] citis2={"北京","天津","上海","重庆","河北","安徽","新疆","浙江","江西","山西","内蒙古","吉林","福建","广东","西藏","四川","宁夏","香港","澳门"}; List<Data> list2=new ArrayList<Data>(); for(String city:citis2){ list2.add(new Data(city,Math.round(Math.random()*1000))); } map2.data(list2.toArray(new Data[0])); Map map3=new Map("博客"); map3.mapType("china").selectedMode(SelectedMode.single).itemStyle(item); String[] citis3={"北京","天津","上海","广东","台湾","香港","澳门"}; List<Data> list3=new ArrayList<Data>(); for(String city:citis3){ list3.add(new Data(city,Math.round(Math.random()*1000))); } map3.data(list3.toArray(new Data[0])); Map map4=new Map("微博"); map4.mapType("china").selectedMode(SelectedMode.single).itemStyle(item); String[] citis4={"北京","天津","上海","广东","台湾","香港","澳门"}; List<Data> list4=new ArrayList<Data>(); for(String city:citis4){ list4.add(new Data(city,Math.round(Math.random()*1000))); } map4.data(list3.toArray(new Data[0])); option.series(map1,map2,map3,map4); str= option.toString(); chartsJson=JSONObject.fromObject(str); return SUCCESS; }
在页面只需要得到这个json串就可以了。
$(function(){
// Step:4 动态加载echarts然后在回调函数中开始使用，注意保持按需加载结构定义图表路径
require(
[
'echarts',
'echarts/chart/bar',
'echarts/chart/line'
],
function (ec) {
// 基于准备好的dom，初始化echarts图表
var myChart = ec.init(document.getElementById('getFocus'));
$.ajax({
url:"${path }echarts/getMap.action",
type:"get",
data:{},
dataType:"json",
timeout:30000,
cache:false,
success:function(data){
// 为echarts对象加载数据
myChart.setOption(data.chartsJson);
}
});
}
);
});
想要在页面多加几个图，可以这个样子获取json:这样更加简便
<body>
<div id="main" style="height: 400px; width:50%; border:1px solid #ccc;padding:10px;"></div>
<div class="clear"></div>
<div id="yulunList" style="height: 400px; width:50%; border:1px solid red;padding:10px;"></div>
<script type="text/javascript" src="${basePath}js/lib/esl.js"></script>
<script type="text/javascript" src="${basePath}js/lib/echarts-map.js"></script>
<script type="text/javascript">
require.config({
paths:{
echarts:'./js/echarts',
'echarts/chart/bar' : '${basePath}/js/echarts-map',
'echarts/chart/line': '${basePath}/js/echarts-map',
'echarts/chart/map' : '${basePath}/js/echarts-map'
}
});
// Step:4 动态加载echarts然后在回调函数中开始使用，注意保持按需加载结构定义图表路径
require(
[
'echarts',
'echarts/chart/bar',
'echarts/chart/line',
'echarts/chart/map'
],
function (ec) {
// 基于准备好的dom，初始化echarts图表
var myChart = ec.init(document.getElementById('main'));
var myid=ec.init(document.getElementById('yulunList'));
$.getJSON( "${basePath}charts/getMap.html", function( data ) {
myChart.setOption(data);
});
$.getJSON( "${basePath}charts/gettest.html", function( data ) {
myid.setOption(data);
});
});
</script>
</body>
如果想让地图做2级页面的跳转，echarts有提供各种接口，例如地图：
var ecConfig = require('echarts/config');
myChart.on(ecConfig.EVENT.MAP_SELECTED, function(param){
var mt = "";
// 全国选择时指定到选中的省份
var selected = param.selected;
for (var i in selected) {
if (selected[i]) {
mt = i;
var da=option.series[0].data;
for(var i=0;i<da.length;i++){
if(mt==da[i].name){
alert(da[i].value);
//这里可以写action，ajax都可以
window.open(da[i].url);
break;
}
}
break;
}
}
});
下面在讲个http://echarts.baidu.com/doc/example/line1.html 这个实例
@Action(value="stra", results={ @Result(name="success",type="json", params = { "root","chartsJson" })}) public String stra(){ SimpleDateFormat siFormat=new SimpleDateFormat("yyyy/MM/dd");//获取日期合适 Option option=new GsonOption(); option.title().text("关键词文章统计"); option.tooltip().trigger(Trigger.axis); option.legend().data("银行","好"); ValueAxis axis = new ValueAxis(); Calendar calendar=Calendar.getInstance(); calendar.setTime(new Date());//传入当前时间 List<String> list=new ArrayList<String>(); calendar.set(Calendar.DAY_OF_MONTH, calendar.get(Calendar.DAY_OF_MONTH)-7); for(int i=0;i<6;i++){ calendar.set(Calendar.DAY_OF_MONTH, calendar.get(Calendar.DAY_OF_MONTH)+1); list.add(siFormat.format(calendar.getTime())); } axis.type(AxisType.category).boundaryGap(false).data(list.toArray());//把前6天的数据传进去 option.xAxis(axis); CategoryAxis yaxis = new CategoryAxis(); yaxis.type(AxisType.value); option.yAxis(yaxis); String[] stri={"银行","好"}; MarkPoint mp = new MarkPoint() ; mp.data(new Data().type(MarkType.max).name("最大值"), new Data().type(MarkType.min).name("最小值")) ; Line line; for(int i=0;i<stri.length;i++) { line = new Line() ; line.name(stri[i]).type(SeriesType.line).data(Math.round(Math.random()*1000),Math.round(Math.random()*1000),Math.round(Math.random()*1000),Math.round(Math.random()*1000),Math.round(Math.random()*1000),Math.round(Math.random()*1000)).markPoint(mp); option.series(line); } chartsJson=JSONObject.fromObject(option.toString()); return SUCCESS; }
这个里面我主要讲的是SimpleDateFormat和Calendar用法，如果想要获取当前分钟的秒数，5秒是一个间隔
// List<String> list=new ArrayList<String>(); SimpleDateFormat siFormat=new SimpleDateFormat("mm:ss"); Calendar calendar=Calendar.getInstance(); calendar.setTime(new Date()); calendar.set(Calendar.SECOND , calendar.get(Calendar.SECOND )-30); for(int i=0;i<6;i++){ calendar.set(Calendar.SECOND , calendar.get(Calendar.SECOND )+5); // list.add(siFormat.format(calendar.getTime())); System.out.println(siFormat.format(calendar.getTime())); }
出来的结果是：09:05 09:10 09:15 09:20 09:25 09:30
