package main
import (
"bytes"
"net/http"
"strconv"
charts "github.com/vicanso/go-charts"
"github.com/wcharczuk/go-chart/v2"
"github.com/wcharczuk/go-chart/v2/drawing"
)
var html = `
go-charts
{{body}}
`
func handler(w http.ResponseWriter, req *http.Request, chartOptions []charts.ChartOption, echartsOptions []string) {
if req.URL.Path != "/" &&
req.URL.Path != "/echarts" {
return
}
query := req.URL.Query()
theme := query.Get("theme")
width, _ := strconv.Atoi(query.Get("width"))
height, _ := strconv.Atoi(query.Get("height"))
charts.SetDefaultWidth(width)
charts.SetDefaultWidth(height)
bytesList := make([][]byte, 0)
for _, opt := range chartOptions {
opt.Theme = theme
d, err := charts.Render(opt)
if err != nil {
panic(err)
}
buf, err := d.Bytes()
if err != nil {
panic(err)
}
bytesList = append(bytesList, buf)
}
for _, opt := range echartsOptions {
buf, err := charts.RenderEChartsToSVG(opt)
if err != nil {
panic(err)
}
bytesList = append(bytesList, buf)
}
data := bytes.ReplaceAll([]byte(html), []byte("{{body}}"), bytes.Join(bytesList, []byte("")))
w.Header().Set("Content-Type", "text/html")
w.Write(data)
}
func indexHandler(w http.ResponseWriter, req *http.Request) {
chartOptions := []charts.ChartOption{
// 普通折线图
{
Title: charts.TitleOption{
Text: "Line",
},
Legend: charts.NewLegendOption([]string{
"Email",
"Union Ads",
"Video Ads",
"Direct",
"Search Engine",
}),
XAxis: charts.NewXAxisOption([]string{
"Mon",
"Tue",
"Wed",
"Thu",
"Fri",
"Sat",
"Sun",
}),
SeriesList: []charts.Series{
charts.NewSeriesFromValues([]float64{
120,
132,
101,
134,
90,
230,
210,
}),
charts.NewSeriesFromValues([]float64{
220,
182,
191,
234,
290,
330,
310,
}),
charts.NewSeriesFromValues([]float64{
150,
232,
201,
154,
190,
330,
410,
}),
charts.NewSeriesFromValues([]float64{
320,
332,
301,
334,
390,
330,
320,
}),
charts.NewSeriesFromValues([]float64{
820,
932,
901,
934,
1290,
1330,
1320,
}),
},
},
// 温度折线图
{
Title: charts.TitleOption{
Text: "Temperature Change in the Coming Week",
},
Padding: chart.Box{
Top: 20,
Left: 20,
Right: 30,
Bottom: 20,
},
Legend: charts.NewLegendOption([]string{
"Highest",
"Lowest",
}, charts.PositionRight),
XAxis: charts.NewXAxisOption([]string{
"Mon",
"Tue",
"Wed",
"Thu",
"Fri",
"Sat",
"Sun",
}, charts.FalseFlag()),
SeriesList: []charts.Series{
{
Data: charts.NewSeriesDataFromValues([]float64{
14,
11,
13,
11,
12,
12,
7,
}),
MarkPoint: charts.NewMarkPoint(charts.SeriesMarkDataTypeMax, charts.SeriesMarkDataTypeMin),
MarkLine: charts.NewMarkLine(charts.SeriesMarkDataTypeAverage),
},
{
Data: charts.NewSeriesDataFromValues([]float64{
1,
-2,
2,
5,
3,
2,
0,
}),
MarkLine: charts.NewMarkLine(charts.SeriesMarkDataTypeAverage),
},
},
},
// 柱状图
{
Title: charts.TitleOption{
Text: "Bar",
},
XAxis: charts.NewXAxisOption([]string{
"Mon",
"Tue",
"Wed",
"Thu",
"Fri",
"Sat",
"Sun",
}),
Legend: charts.LegendOption{
Data: []string{
"Rainfall",
"Evaporation",
},
Icon: charts.LegendIconRect,
},
SeriesList: []charts.Series{
charts.NewSeriesFromValues([]float64{
120,
200,
150,
80,
70,
110,
130,
}, charts.ChartTypeBar),
{
Type: charts.ChartTypeBar,
Data: []charts.SeriesData{
{
Value: 100,
},
{
Value: 190,
Style: chart.Style{
FillColor: drawing.Color{
R: 169,
G: 0,
B: 0,
A: 255,
},
},
},
{
Value: 230,
},
{
Value: 140,
},
{
Value: 100,
},
{
Value: 200,
},
{
Value: 180,
},
},
},
},
},
// 柱状图+mark
{
Title: charts.TitleOption{
Text: "Rainfall vs Evaporation",
Subtext: "Fake Data",
},
Padding: chart.Box{
Top: 20,
Right: 20,
Bottom: 20,
Left: 20,
},
XAxis: charts.NewXAxisOption([]string{
"Jan",
"Feb",
"Mar",
"Apr",
"May",
"Jun",
"Jul",
"Aug",
"Sep",
"Oct",
"Nov",
"Dec",
}),
Legend: charts.NewLegendOption([]string{
"Rainfall",
"Evaporation",
}, charts.PositionRight),
SeriesList: []charts.Series{
{
Type: charts.ChartTypeBar,
Data: charts.NewSeriesDataFromValues([]float64{
2.0,
4.9,
7.0,
23.2,
25.6,
76.7,
135.6,
162.2,
32.6,
20.0,
6.4,
3.3,
}),
MarkPoint: charts.NewMarkPoint(
charts.SeriesMarkDataTypeMax,
charts.SeriesMarkDataTypeMin,
),
MarkLine: charts.NewMarkLine(
charts.SeriesMarkDataTypeAverage,
),
},
{
Type: charts.ChartTypeBar,
Data: charts.NewSeriesDataFromValues([]float64{
2.6,
5.9,
9.0,
26.4,
28.7,
70.7,
175.6,
182.2,
48.7,
18.8,
6.0,
2.3,
}),
MarkPoint: charts.NewMarkPoint(
charts.SeriesMarkDataTypeMax,
charts.SeriesMarkDataTypeMin,
),
MarkLine: charts.NewMarkLine(
charts.SeriesMarkDataTypeAverage,
),
},
},
},
// 双Y轴示例
{
XAxis: charts.NewXAxisOption([]string{
"Jan",
"Feb",
"Mar",
"Apr",
"May",
"Jun",
"Jul",
"Aug",
"Sep",
"Oct",
"Nov",
"Dec",
}),
Legend: charts.NewLegendOption([]string{
"Evaporation",
"Precipitation",
"Temperature",
}),
YAxisList: []charts.YAxisOption{
{
Formatter: "{value}°C",
Color: drawing.Color{
R: 250,
G: 200,
B: 88,
A: 255,
},
},
{
Formatter: "{value}ml",
Color: drawing.Color{
R: 84,
G: 112,
B: 198,
A: 255,
},
},
},
SeriesList: []charts.Series{
{
Type: charts.ChartTypeBar,
Data: charts.NewSeriesDataFromValues([]float64{
2.0,
4.9,
7.0,
23.2,
25.6,
76.7,
135.6,
162.2,
32.6,
20.0,
6.4,
3.3,
10.2,
}),
YAxisIndex: 1,
},
{
Type: charts.ChartTypeBar,
Data: charts.NewSeriesDataFromValues([]float64{
2.6,
5.9,
9.0,
26.4,
28.7,
70.7,
175.6,
182.2,
48.7,
18.8,
6.0,
2.3,
20.2,
}),
YAxisIndex: 1,
},
{
Data: charts.NewSeriesDataFromValues([]float64{
2.0,
2.2,
3.3,
4.5,
6.3,
10.2,
20.3,
23.4,
23.0,
16.5,
12.0,
6.2,
30.3,
}),
},
},
},
// 饼图
{
Title: charts.TitleOption{
Text: "Referer of a Website",
Subtext: "Fake Data",
Left: charts.PositionCenter,
},
Legend: charts.LegendOption{
Orient: charts.OrientVertical,
Data: []string{
"Search Engine",
"Direct",
"Email",
"Union Ads",
"Video Ads",
},
Left: charts.PositionLeft,
},
SeriesList: charts.NewPieSeriesList([]float64{
1048,
735,
580,
484,
300,
}, charts.PieSeriesOption{
Label: charts.SeriesLabel{
Show: true,
},
Radius: "35%",
}),
},
// 雷达图
{
Title: charts.TitleOption{
Text: "Basic Radar Chart",
},
Legend: charts.NewLegendOption([]string{
"Allocated Budget",
"Actual Spending",
}),
RadarIndicators: []charts.RadarIndicator{
{
Name: "Sales",
Max: 6500,
},
{
Name: "Administration",
Max: 16000,
},
{
Name: "Information Technology",
Max: 30000,
},
{
Name: "Customer Support",
Max: 38000,
},
{
Name: "Development",
Max: 52000,
},
{
Name: "Marketing",
Max: 25000,
},
},
SeriesList: charts.SeriesList{
{
Type: charts.ChartTypeRadar,
Data: charts.NewSeriesDataFromValues([]float64{
4200,
3000,
20000,
35000,
50000,
18000,
}),
},
{
Type: charts.ChartTypeRadar,
Data: charts.NewSeriesDataFromValues([]float64{
5000,
14000,
28000,
26000,
42000,
21000,
}),
},
},
},
// 漏斗图
{
Title: charts.TitleOption{
Text: "Funnel",
},
Legend: charts.NewLegendOption([]string{
"Show",
"Click",
"Visit",
"Inquiry",
"Order",
}),
SeriesList: []charts.Series{
{
Type: charts.ChartTypeFunnel,
Name: "Visit",
Data: charts.NewSeriesDataFromValues([]float64{
60,
}),
},
{
Type: charts.ChartTypeFunnel,
Name: "Inquiry",
Data: charts.NewSeriesDataFromValues([]float64{
40,
}),
},
{
Type: charts.ChartTypeFunnel,
Name: "Order",
Data: charts.NewSeriesDataFromValues([]float64{
20,
}),
},
{
Type: charts.ChartTypeFunnel,
Name: "Click",
Data: charts.NewSeriesDataFromValues([]float64{
80,
}),
},
{
Type: charts.ChartTypeFunnel,
Name: "Show",
Data: charts.NewSeriesDataFromValues([]float64{
100,
}),
},
},
},
// 多图展示
{
Legend: charts.LegendOption{
Top: "-90",
Data: []string{
"Milk Tea",
"Matcha Latte",
"Cheese Cocoa",
"Walnut Brownie",
},
},
Padding: chart.Box{
Top: 100,
Right: 10,
Bottom: 10,
Left: 10,
},
XAxis: charts.NewXAxisOption([]string{
"2012",
"2013",
"2014",
"2015",
"2016",
"2017",
}),
YAxisList: []charts.YAxisOption{
{
Min: charts.NewFloatPoint(0),
Max: charts.NewFloatPoint(90),
},
},
SeriesList: []charts.Series{
charts.NewSeriesFromValues([]float64{
56.5,
82.1,
88.7,
70.1,
53.4,
85.1,
}),
charts.NewSeriesFromValues([]float64{
51.1,
51.4,
55.1,
53.3,
73.8,
68.7,
}),
charts.NewSeriesFromValues([]float64{
40.1,
62.2,
69.5,
36.4,
45.2,
32.5,
}, charts.ChartTypeBar),
charts.NewSeriesFromValues([]float64{
25.2,
37.1,
41.2,
18,
33.9,
49.1,
}, charts.ChartTypeBar),
},
Children: []charts.ChartOption{
{
Legend: charts.LegendOption{
Show: charts.FalseFlag(),
Data: []string{
"Milk Tea",
"Matcha Latte",
"Cheese Cocoa",
"Walnut Brownie",
},
},
Box: chart.Box{
Top: 20,
Left: 400,
Right: 500,
Bottom: 120,
},
SeriesList: charts.NewPieSeriesList([]float64{
435.9,
354.3,
285.9,
204.5,
}, charts.PieSeriesOption{
Label: charts.SeriesLabel{
Show: true,
},
Radius: "35%",
}),
},
},
},
}
handler(w, req, chartOptions, nil)
}
func echartsHandler(w http.ResponseWriter, req *http.Request) {
echartsOptions := []string{
`{
"xAxis": {
"type": "category",
"data": [
"Mon",
"Tue",
"Wed",
"Thu",
"Fri",
"Sat",
"Sun"
]
},
"yAxis": {
"type": "value"
},
"series": [
{
"data": [
150,
230,
224,
218,
135,
147,
260
],
"type": "line"
}
]
}`,
`{
"title": {
"text": "Multiple Line"
},
"tooltip": {
"trigger": "axis"
},
"legend": {
"left": "right",
"data": [
"Email",
"Union Ads",
"Video Ads",
"Direct",
"Search Engine"
]
},
"grid": {
"left": "3%",
"right": "4%",
"bottom": "3%",
"containLabel": true
},
"toolbox": {
"feature": {
"saveAsImage": {}
}
},
"xAxis": {
"type": "category",
"boundaryGap": false,
"data": [
"Mon",
"Tue",
"Wed",
"Thu",
"Fri",
"Sat",
"Sun"
]
},
"yAxis": {
"type": "value"
},
"series": [
{
"name": "Email",
"type": "line",
"data": [
120,
132,
101,
134,
90,
230,
210
]
},
{
"name": "Union Ads",
"type": "line",
"data": [
220,
182,
191,
234,
290,
330,
310
]
},
{
"name": "Video Ads",
"type": "line",
"data": [
150,
232,
201,
154,
190,
330,
410
]
},
{
"name": "Direct",
"type": "line",
"data": [
320,
332,
301,
334,
390,
330,
320
]
},
{
"name": "Search Engine",
"type": "line",
"data": [
820,
932,
901,
934,
1290,
1330,
1320
]
}
]
}`,
`{
"title": {
"text": "Temperature Change in the Coming Week"
},
"legend": {
"left": "right"
},
"padding": [10, 30, 10, 10],
"xAxis": {
"type": "category",
"boundaryGap": false,
"data": [
"Mon",
"Tue",
"Wed",
"Thu",
"Fri",
"Sat",
"Sun"
]
},
"yAxis": {
"axisLabel": {
"formatter": "{value} °C"
}
},
"series": [
{
"name": "Highest",
"type": "line",
"data": [
10,
11,
13,
11,
12,
12,
9
],
"markPoint": {
"data": [
{
"type": "max"
},
{
"type": "min"
}
]
},
"markLine": {
"data": [
{
"type": "average"
}
]
}
},
{
"name": "Lowest",
"type": "line",
"data": [
1,
-2,
2,
5,
3,
2,
0
],
"markPoint": {
"data": [
{
"type": "min"
}
]
},
"markLine": {
"data": [
{
"type": "average"
},
{
"type": "max"
}
]
}
}
]
}`,
`{
"xAxis": {
"type": "category",
"data": [
"Mon",
"Tue",
"Wed",
"Thu",
"Fri",
"Sat",
"Sun"
]
},
"yAxis": {
"type": "value"
},
"series": [
{
"data": [
120,
200,
150,
80,
70,
110,
130
],
"type": "bar"
}
]
}`,
`{
"xAxis": {
"type": "category",
"data": [
"Mon",
"Tue",
"Wed",
"Thu",
"Fri",
"Sat",
"Sun"
]
},
"yAxis": {
"type": "value"
},
"series": [
{
"data": [
120,
{
"value": 200,
"itemStyle": {
"color": "#a90000"
}
},
150,
80,
70,
110,
130
],
"type": "bar"
}
]
}`,
`{
"title": {
"text": "Rainfall vs Evaporation",
"subtext": "Fake Data"
},
"legend": {
"data": [
"Rainfall",
"Evaporation"
]
},
"padding": [10, 30, 10, 10],
"xAxis": [
{
"type": "category",
"data": [
"Jan",
"Feb",
"Mar",
"Apr",
"May",
"Jun",
"Jul",
"Aug",
"Sep",
"Oct",
"Nov",
"Dec"
]
}
],
"series": [
{
"name": "Rainfall",
"type": "bar",
"data": [
2,
4.9,
7,
23.2,
25.6,
76.7,
135.6,
162.2,
32.6,
20,
6.4,
3.3
],
"markPoint": {
"data": [
{
"type": "max"
},
{
"type": "min"
}
]
},
"markLine": {
"data": [
{
"type": "average"
}
]
}
},
{
"name": "Evaporation",
"type": "bar",
"data": [
2.6,
5.9,
9,
26.4,
28.7,
70.7,
175.6,
182.2,
48.7,
18.8,
6,
2.3
],
"markPoint": {
"data": [
{
"type": "max"
},
{
"type": "min"
}
]
},
"markLine": {
"data": [
{
"type": "average"
}
]
}
}
]
}`,
`{
"legend": {
"data": [
"Evaporation",
"Precipitation",
"Temperature"
]
},
"xAxis": [
{
"type": "category",
"data": [
"Mon",
"Tue",
"Wed",
"Thu",
"Fri",
"Sat",
"Sun"
],
"axisPointer": {
"type": "shadow"
}
}
],
"yAxis": [
{
"type": "value",
"name": "Precipitation",
"min": 0,
"max": 240,
"axisLabel": {
"formatter": "{value} ml"
}
},
{
"type": "value",
"name": "Temperature",
"min": 0,
"max": 24,
"axisLabel": {
"formatter": "{value} °C"
}
}
],
"series": [
{
"name": "Evaporation",
"type": "bar",
"tooltip": {},
"data": [
2,
4.9,
7,
23.2,
25.6,
76.7,
135.6,
162.2,
32.6,
20,
6.4,
3.3
]
},
{
"name": "Precipitation",
"type": "bar",
"tooltip": {},
"data": [
2.6,
5.9,
9,
26.4,
28.7,
70.7,
175.6,
182.2,
48.7,
18.8,
6,
2.3
]
},
{
"name": "Temperature",
"type": "line",
"yAxisIndex": 1,
"tooltip": {},
"data": [
2,
2.2,
3.3,
4.5,
6.3,
10.2,
20.3,
23.4,
23,
16.5,
12,
6.2
]
}
]
}`,
`{
"tooltip": {
"trigger": "axis",
"axisPointer": {
"type": "cross"
}
},
"grid": {
"right": "20%"
},
"toolbox": {
"feature": {
"dataView": {
"show": true,
"readOnly": false
},
"restore": {
"show": true
},
"saveAsImage": {
"show": true
}
}
},
"legend": {
"data": [
"Evaporation",
"Precipitation",
"Temperature"
]
},
"xAxis": [
{
"type": "category",
"axisTick": {
"alignWithLabel": true
},
"data": [
"Jan",
"Feb",
"Mar",
"Apr",
"May",
"Jun",
"Jul",
"Aug",
"Sep",
"Oct",
"Nov",
"Dec"
]
}
],
"yAxis": [
{
"type": "value",
"name": "温度",
"position": "left",
"alignTicks": true,
"axisLine": {
"show": true,
"lineStyle": {
"color": "#EE6666"
}
},
"axisLabel": {
"formatter": "{value} °C"
}
},
{
"type": "value",
"name": "Evaporation",
"position": "right",
"alignTicks": true,
"axisLine": {
"show": true,
"lineStyle": {
"color": "#5470C6"
}
},
"axisLabel": {
"formatter": "{value} ml"
}
}
],
"series": [
{
"name": "Evaporation",
"type": "bar",
"yAxisIndex": 1,
"data": [
2,
4.9,
7,
23.2,
25.6,
76.7,
135.6,
162.2,
32.6,
20,
6.4,
3.3
]
},
{
"name": "Precipitation",
"type": "bar",
"yAxisIndex": 1,
"data": [
2.6,
5.9,
9,
26.4,
28.7,
70.7,
175.6,
182.2,
48.7,
18.8,
6,
2.3
]
},
{
"name": "Temperature",
"type": "line",
"data": [
2,
2.2,
3.3,
4.5,
6.3,
10.2,
20.3,
23.4,
23,
16.5,
12,
6.2
]
}
]
}`,
`{
"title": {
"text": "Referer of a Website",
"subtext": "Fake Data",
"left": "center"
},
"tooltip": {
"trigger": "item"
},
"legend": {
"orient": "vertical",
"left": "left"
},
"series": [
{
"name": "Access From",
"type": "pie",
"radius": "50%",
"data": [
{
"value": 1048,
"name": "Search Engine"
},
{
"value": 735,
"name": "Direct"
},
{
"value": 580,
"name": "Email"
},
{
"value": 484,
"name": "Union Ads"
},
{
"value": 300,
"name": "Video Ads"
}
]
}
]
}`,
`{
"title": {
"text": "Rainfall"
},
"padding": [10, 10, 10, 30],
"legend": {
"data": [
"GZ",
"SH"
]
},
"xAxis": {
"type": "category",
"splitNumber": 6,
"data": [
"01-01",
"01-02",
"01-03",
"01-04",
"01-05",
"01-06",
"01-07",
"01-08",
"01-09",
"01-10",
"01-11",
"01-12",
"01-13",
"01-14",
"01-15",
"01-16",
"01-17",
"01-18",
"01-19",
"01-20",
"01-21",
"01-22",
"01-23",
"01-24",
"01-25",
"01-26",
"01-27",
"01-28",
"01-29",
"01-30",
"01-31"
]
},
"yAxis": {
"axisLabel": {
"formatter": "{value} mm"
}
},
"series": [
{
"type": "bar",
"data": [
928,
821,
889,
600,
547,
783,
197,
853,
430,
346,
63,
465,
309,
334,
141,
538,
792,
58,
922,
807,
298,
243,
744,
885,
812,
231,
330,
220,
984,
221,
429
]
},
{
"type": "bar",
"data": [
749,
201,
296,
579,
255,
159,
902,
246,
149,
158,
507,
776,
186,
79,
390,
222,
601,
367,
221,
411,
714,
620,
966,
73,
203,
631,
833,
610,
487,
677,
596
]
}
]
}`,
`{
"title": {
"text": "Basic Radar Chart"
},
"legend": {
"data": [
"Allocated Budget",
"Actual Spending"
]
},
"radar": {
"indicator": [
{
"name": "Sales",
"max": 6500
},
{
"name": "Administration",
"max": 16000
},
{
"name": "Information Technology",
"max": 30000
},
{
"name": "Customer Support",
"max": 38000
},
{
"name": "Development",
"max": 52000
},
{
"name": "Marketing",
"max": 25000
}
]
},
"series": [
{
"name": "Budget vs spending",
"type": "radar",
"data": [
{
"value": [
4200,
3000,
20000,
35000,
50000,
18000
],
"name": "Allocated Budget"
},
{
"value": [
5000,
14000,
28000,
26000,
42000,
21000
],
"name": "Actual Spending"
}
]
}
]
}`,
`{
"title": {
"text": "Funnel"
},
"tooltip": {
"trigger": "item",
"formatter": "{a}
{b} : {c}%"
},
"toolbox": {
"feature": {
"dataView": {
"readOnly": false
},
"restore": {},
"saveAsImage": {}
}
},
"legend": {
"data": [
"Show",
"Click",
"Visit",
"Inquiry",
"Order"
]
},
"series": [
{
"name": "Funnel",
"type": "funnel",
"left": "10%",
"top": 60,
"bottom": 60,
"width": "80%",
"min": 0,
"max": 100,
"minSize": "0%",
"maxSize": "100%",
"sort": "descending",
"gap": 2,
"label": {
"show": true,
"position": "inside"
},
"labelLine": {
"length": 10,
"lineStyle": {
"width": 1,
"type": "solid"
}
},
"itemStyle": {
"borderColor": "#fff",
"borderWidth": 1
},
"emphasis": {
"label": {
"fontSize": 20
}
},
"data": [
{
"value": 60,
"name": "Visit"
},
{
"value": 40,
"name": "Inquiry"
},
{
"value": 20,
"name": "Order"
},
{
"value": 80,
"name": "Click"
},
{
"value": 100,
"name": "Show"
}
]
}
]
}`,
`{
"legend": {
"top": "-140",
"data": [
"Milk Tea",
"Matcha Latte",
"Cheese Cocoa",
"Walnut Brownie"
]
},
"padding": [
150,
10,
10,
10
],
"xAxis": [
{
"data": [
"2012",
"2013",
"2014",
"2015",
"2016",
"2017"
]
}
],
"series": [
{
"data": [
56.5,
82.1,
88.7,
70.1,
53.4,
85.1
]
},
{
"data": [
51.1,
51.4,
55.1,
53.3,
73.8,
68.7
]
},
{
"data": [
40.1,
62.2,
69.5,
36.4,
45.2,
32.5
]
},
{
"data": [
25.2,
37.1,
41.2,
18,
33.9,
49.1
]
}
],
"children": [
{
"box": {
"left": 0,
"top": 30,
"right": 600,
"bottom": 150
},
"legend": {
"show": false
},
"series": [
{
"type": "pie",
"radius": "50%",
"data": [
{
"value": 435.9,
"name": "Milk Tea"
},
{
"value": 354.3,
"name": "Matcha Latte"
},
{
"value": 285.9,
"name": "Cheese Cocoa"
},
{
"value": 204.5,
"name": "Walnut Brownie"
}
]
}
]
}
]
}`,
}
handler(w, req, nil, echartsOptions)
}
func main() {
http.HandleFunc("/", indexHandler)
http.HandleFunc("/echarts", echartsHandler)
http.ListenAndServe(":3012", nil)
}