页面部分
<%@ page language="java" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>ECharts柱状图</title>
<script type="text/javascript" src="../js/jquery.min.js"></script>
<script type="text/javascript" src="../js/echarts.js"></script>
</head>
<body>
<!-- 为ECharts准备一个具备大小（宽高）的Dom -->
<div id="main" style="width: 600px;height:400px;"></div>
<script type="text/javascript">
$().ready(function() {
var myChart = echarts.init(document.getElementById('main'));
//图表显示提示信息
myChart.showLoading();
//定义图表options
var options = {
color : [ '#3398DB' ],
title : {
text : "通过Ajax获取数据呈现图标示例",
subtext : "www.stepday.com",
sublink : "http://www.stepday.com/myblog/?Echarts"
},
tooltip : {
trigger : 'axis'
},
legend : {
data : []
},
toolbox : {
show : true,
feature : {
mark : false
}
},
calculable : true,
xAxis : [ {
type : 'category',
data : []
} ],
yAxis : [ {
type : 'value',
splitArea : {
show : true
}
} ],
series : [ {
barWidth : '60%'
} ]
}; //通过Ajax获取数据
$.ajax({
type : "post",
async : false, //同步执行
url : "showEchartBar.action",
dataType : "json", //返回数据形式为json
success : function(result) {
if (result) {
//将返回的category和series对象赋值给options对象内的category和series
//因为xAxis是一个数组 这里需要是xAxis[i]的形式
options.xAxis[0].data = result.category;
options.series = result.series;
options.legend.data = result.legend; myChart.hideLoading();
myChart.setOption(options);
}
},
error : function(errorMsg) {
alert("图表请求数据失败啦!");
}
}); });
</script>
</body>
</html>
<%@ 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>echarts饼状图</title>
<script type="text/javascript" src="../js/jquery.min.js"></script>
<script type="text/javascript" src="../js/echarts.js"></script>
</head>
<body>
<!--定义页面图表容器-->
<!-- 必须制定容器的大小（height、width） -->
<div id="main"
style="height: 400px; border: 1px solid #ccc; padding: 10px;"></div> <script type="text/javascript">
$().ready(function() {
var myChart = echarts.init(document.getElementById('main'));
//图表显示提示信息
myChart.showLoading();
//定义图表options
var options = {
title : {
text : '某站点用户访问来源',
subtext : '纯属虚构',
x : 'center'
},
tooltip : {
trigger : 'item',
formatter : "{a} <br/>{b} : {c} ({d}%)"
},
legend : {
orient : 'vertical',
left : 'left',
data : []
},
series : [ {
name : '访问来源',
type : 'pie',
data : []
} ]
};
//通过Ajax获取数据
$.ajax({
type : "post",
async : false, //同步执行
url : "showEchartPie.action",
dataType : "json", //返回数据形式为json
success : function(result) {
if (result) {
options.legend.data = result.legend; //将返回的category和series对象赋值给options对象内的category和series
//因为xAxis是一个数组 这里需要是xAxis[i]的形式
options.series[0].name = result.series[0].name;
options.series[0].type = result.series[0].type;
var serisdata = result.series[0].data; //遍历
/* var datas = [];
for ( var i = 0; i < serisdata.length; i++) {
datas.push({
name : serisdata[i].name,
value : serisdata[i].value
});
}
options.series[0].data = datas; */ //jquery遍历
var value = [];
$.each(serisdata, function(i, p) {
value[i] = {
'name' : p['name'],
'value' : p['value']
};
});
options.series[0]['data'] = value; myChart.hideLoading();
myChart.setOption(options);
}
},
error : function(errorMsg) {
alert("图表请求数据失败啦!");
}
}); });
</script> </body>
</html>
<%@ 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">
<script type="text/javascript" src="../js/echarts.js"></script>
<script type="text/javascript" src="../js/jquery.min.js"></script>
</head>
<title>echarts折线图</title>
<body>
<!--定义页面图表容器-->
<!-- 必须制定容器的大小（height、width） -->
<div id="main"
style="height: 400px; border: 1px solid #ccc; padding: 10px;"></div> <script type="text/javascript">
$().ready(
function() {
var myChart = echarts.init(document.getElementById('main'));
//图表显示提示信息
myChart.showLoading();
//定义图表options
var options = {
title: {
text: "通过Ajax获取数据呈现图标示例",
subtext: "www.stepday.com",
sublink: "http://www.stepday.com/myblog/?Echarts"
},
tooltip: {
trigger: 'axis'
},
legend: {
data: []
},
toolbox: {
show: true,
feature: {
mark: false
}
},
calculable: true,
xAxis: [
{
type: 'category',
data: []
}
],
yAxis: [
{
type: 'value',
splitArea: { show: true }
}
],
series: []
}; //通过Ajax获取数据
$.ajax({
type : "post",
async : false, //同步执行
url : "showEchartLine.action",
dataType : "json", //返回数据形式为json
success : function(result) {
if (result) {
//将返回的category和series对象赋值给options对象内的category和series
//因为xAxis是一个数组 这里需要是xAxis[i]的形式
options.xAxis[0].data = result.category;
options.series = result.series;
options.legend.data = result.legend;
myChart.hideLoading();
myChart.setOption(options);
}
},
error : function(errorMsg) {
alert("图表请求数据失败啦!");
}
}); });
</script>
</body>
</html>
后端java代码
@Controller
@RequestMapping("/echartsJSP")
public class EchartAction { @Autowired
private TotalNumBiz toatlNumBiz;
@Autowired
private VisitBiz visitBiz; @RequestMapping("/showEchartLine")
@ResponseBody
public EchartData lineData() {
System.out.println("折线图");
List<String> category = new ArrayList<String>();
List<Long> serisData=new ArrayList<Long>();
List<TotalNum> list = toatlNumBiz.findAll();
for (TotalNum totalNum : list) {
category.add(totalNum.getWeek());
serisData.add(totalNum.getCount());
}
List<String> legend = new ArrayList<String>(Arrays.asList(new String[] { "总数比较" }));// 数据分组
List<Series> series = new ArrayList<Series>();// 纵坐标
series.add(new Series("总数比较", "line", serisData));
EchartData data = new EchartData(legend, category, series);
return data;
}
@RequestMapping("/showEchartBar")
@ResponseBody
public EchartData BarData() {
System.out.println("柱状图");
List<String> category = new ArrayList<String>();
List<Long> serisData=new ArrayList<Long>();
List<TotalNum> list = toatlNumBiz.findAll();
for (TotalNum totalNum : list) {
category.add(totalNum.getWeek());
serisData.add(totalNum.getCount());
}
List<String> legend = new ArrayList<String>(Arrays.asList(new String[] { "总数比较" }));// 数据分组
List<Series> series = new ArrayList<Series>();// 纵坐标
series.add(new Series("总数比较", "bar", serisData));
EchartData data = new EchartData(legend, category, series);
return data;
}
/**
* 饼状图
* @param <T>
* @return
*/
@RequestMapping("/showEchartPie")
@ResponseBody
public EchartData PieData() {
List<String> legend = new ArrayList<String>();
List<Map> serisData=new ArrayList<Map>(); List<Visit> list = visitBiz.findAll();
for (Visit visit : list) {
Map map =new HashMap();
legend.add(visit.getName());
map.put("value", visit.getValue());
map.put("name",visit.getName());
serisData.add(map);
}
List<Series> series = new ArrayList<Series>();// 纵坐标
series.add(new Series("总数比较", "pie",serisData));
EchartData data = new EchartData(legend,null, series);
return data;
}
}
另外使用EchartsData和Series两个类封装数据
public class EchartData {
public List<String> legend = new ArrayList<String>();// 数据分组
public List<String> category = new ArrayList<String>();// 横坐标
public List<Series> series = new ArrayList<Series>();// 纵坐标
public EchartData(List<String> legendList, List<String> categoryList,
List<Series> seriesList) {
super();
this.legend = legendList;
this.category = categoryList;
this.series = seriesList;
}
}
public class Series<T>{
public String name;
public String type;
public List<T> data;// 这里要用int 不能用String 不然前台显示不正常（特别是在做数学运算的时候）
public Series(String name, String type, List<T> data) {
super();
this.name = name;
this.type = type;
this.data = data;
}
测试使用的实体类及其他部分
public class TotalNum {
private Integer id;
private String week;
private Long count;
public class Visit {
private Integer id;
private String name;
private Integer value;