Highcharts：使用jspdf导出多个图表
问题描述 投票：0回答：1
当我尝试使用jsPdf导出几个Highcharts图表时，我没有以正确的方式获取图表。
你能帮帮我吗？
JAVASCRIPT代码
Highcharts.chart('container', {
title: {
text: 'Solar Employment Growth by Sector, 2010-2016'
},
subtitle: {
text: 'Source: thesolarfoundation.com'
},
yAxis: {
title: {
text: 'Number of Employees'
}
},
legend: {
layout: 'vertical',
align: 'right',
verticalAlign: 'middle'
},
plotOptions: {
series: {
label: {
connectorAllowed: false
},
pointStart: 2010
}
},
series: [{
name: 'Installation',
data: [43934, 52503, 57177, 69658, 97031, 119931, 137133, 154175]
}, {
name: 'Manufacturing',
data: [24916, 24064, 29742, 29851, 32490, 30282, 38121, 40434]
}, {
name: 'Sales & Distribution',
data: [11744, 17722, 16005, 19771, 20185, 24377, 32147, 39387]
}, {
name: 'Project Development',
data: [null, null, 7988, 12169, 15112, 22452, 34400, 34227]
}, {
name: 'Other',
data: [12908, 5948, 8105, 11248, 8989, 11816, 18274, 18111]
}],
responsive: {
rules: [{
condition: {
maxWidth: 500
},
chartOptions: {
legend: {
layout: 'horizontal',
align: 'center',
verticalAlign: 'bottom'
}
}
}]
}
});
Highcharts.chart('container1', {
title: {
text: 'Solar Employment Growth by Sector, 2010-2016'
},
subtitle: {
text: 'Source: thesolarfoundation.com'
},
yAxis: {
title: {
text: 'Number of Employees'
}
},
legend: {
layout: 'vertical',
align: 'right',
verticalAlign: 'middle'
},
plotOptions: {
series: {
label: {
connectorAllowed: false
},
pointStart: 2010
}
},
series: [{
name: 'Installation',
data: [43934, 52503, 57177, 69658, 97031, 119931, 137133, 154175]
}, {
name: 'Manufacturing',
data: [24916, 24064, 29742, 29851, 32490, 30282, 38121, 40434]
}, {
name: 'Sales & Distribution',
data: [11744, 17722, 16005, 19771, 20185, 24377, 32147, 39387]
}, {
name: 'Project Development',
data: [null, null, 7988, 12169, 15112, 22452, 34400, 34227]
}, {
name: 'Other',
data: [12908, 5948, 8105, 11248, 8989, 11816, 18274, 18111]
}],
responsive: {
rules: [{
condition: {
maxWidth: 500
},
chartOptions: {
legend: {
layout: 'horizontal',
align: 'center',
verticalAlign: 'bottom'
}
}
}]
}
});
Highcharts.chart('container2', {
title: {
text: 'Solar Employment Growth by Sector, 2010-2016'
},
subtitle: {
text: 'Source: thesolarfoundation.com'
},
yAxis: {
title: {
text: 'Number of Employees'
}
},
legend: {
layout: 'vertical',
align: 'right',
verticalAlign: 'middle'
},
plotOptions: {
series: {
label: {
connectorAllowed: false
},
pointStart: 2010
}
},
series: [{
name: 'Installation',
data: [43934, 52503, 57177, 69658, 97031, 119931, 137133, 154175]
}, {
name: 'Manufacturing',
data: [24916, 24064, 29742, 29851, 32490, 30282, 38121, 40434]
}, {
name: 'Sales & Distribution',
data: [11744, 17722, 16005, 19771, 20185, 24377, 32147, 39387]
}, {
name: 'Project Development',
data: [null, null, 7988, 12169, 15112, 22452, 34400, 34227]
}, {
name: 'Other',
data: [12908, 5948, 8105, 11248, 8989, 11816, 18274, 18111]
}],
responsive: {
rules: [{
condition: {
maxWidth: 500
},
chartOptions: {
legend: {
layout: 'horizontal',
align: 'center',
verticalAlign: 'bottom'
}
}
}]
}
});
Highcharts.chart('container3', {
title: {
text: 'Solar Employment Growth by Sector, 2010-2016'
},
subtitle: {
text: 'Source: thesolarfoundation.com'
},
yAxis: {
title: {
text: 'Number of Employees'
}
},
legend: {
layout: 'vertical',
align: 'right',
verticalAlign: 'middle'
},
plotOptions: {
series: {
label: {
connectorAllowed: false
},
pointStart: 2010
}
},
series: [{
name: 'Installation',
data: [43934, 52503, 57177, 69658, 97031, 119931, 137133, 154175]
}, {
name: 'Manufacturing',
data: [24916, 24064, 29742, 29851, 32490, 30282, 38121, 40434]
}, {
name: 'Sales & Distribution',
data: [11744, 17722, 16005, 19771, 20185, 24377, 32147, 39387]
}, {
name: 'Project Development',
data: [null, null, 7988, 12169, 15112, 22452, 34400, 34227]
}, {
name: 'Other',
data: [12908, 5948, 8105, 11248, 8989, 11816, 18274, 18111]
}],
responsive: {
rules: [{
condition: {
maxWidth: 500
},
chartOptions: {
legend: {
layout: 'horizontal',
align: 'center',
verticalAlign: 'bottom'
}
}
}]
}
});
Highcharts.chart('container4', {
title: {
text: 'Solar Employment Growth by Sector, 2010-2016'
},
subtitle: {
text: 'Source: thesolarfoundation.com'
},
yAxis: {
title: {
text: 'Number of Employees'
}
},
legend: {
layout: 'vertical',
align: 'right',
verticalAlign: 'middle'
},
plotOptions: {
series: {
label: {
connectorAllowed: false
},
pointStart: 2010
}
},
series: [{
name: 'Installation',
data: [43934, 52503, 57177, 69658, 97031, 119931, 137133, 154175]
}, {
name: 'Manufacturing',
data: [24916, 24064, 29742, 29851, 32490, 30282, 38121, 40434]
}, {
name: 'Sales & Distribution',
data: [11744, 17722, 16005, 19771, 20185, 24377, 32147, 39387]
}, {
name: 'Project Development',
data: [null, null, 7988, 12169, 15112, 22452, 34400, 34227]
}, {
name: 'Other',
data: [12908, 5948, 8105, 11248, 8989, 11816, 18274, 18111]
}],
responsive: {
rules: [{
condition: {
maxWidth: 500
},
chartOptions: {
legend: {
layout: 'horizontal',
align: 'center',
verticalAlign: 'bottom'
}
}
}]
}
});
function exportToPdf(){
var pdf = new jsPDF('p','pt','a4');
var margins = {
top: 25,
bottom: 60,
left: 20,
width: 522
};
pdf.addHTML(document.body, margins.top, margins.left, {}, function() {
pdf.save('test.pdf');
});
}
HTMl代码
<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/series-label.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>
<script src="https://code.highcharts.com/modules/export-data.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.3.2/jspdf.min.js"></script>
<script src='https://cdn.rawgit.com/simonbengtsson/jsPDF/requirejs-fix-dist/dist/jspdf.debug.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jspdf-autotable/2.3.2/jspdf.plugin.autotable.js'></script>
<script src="https://raw.githubusercontent.com/CBiX/svgToPdf.js/master/svgToPdf.js"></script>
<button onclick="exportToPdf()">
Export
</button>
<div id="container"></div>
<div id="container1"></div>
<div id="container2"></div>
<div id="container3"></div>
如果jsPDf不可能有任何框架可用于导出highcharts？
jsFiddle链接：
1个回答
0
投票
投票
要使用jspdf下载多个图表，您可以使用以下方法：
- 使用每个图表的选项将AJAX发送到Highcharts服务器。返回将是服务器上图像的URL。
- 将图像从Highcharts服务器转换为base64格式（https://stackoverflow.com/a/20285053/10077925）。
- 使用
jspdf库将图表，徽标，页脚添加到pdf并保存结果。
码：
// ############### CHARTS OPTIONS ###############
Highcharts.chart('container1', {
title: {
text: 'Chart 1'
},
plotOptions: {
series: {
label: {
connectorAllowed: false
},
pointStart: 2010
}
},
series: [{
name: 'Installation',
color: 'red',
data: [43934, 52503, 57177, 69658, 97031, 119931, 137133, 154175]
}]
});
Highcharts.chart('container2', {
chart: {
type: 'column'
},
title: {
text: 'Chart 2'
},
series: [{
name: 'Manufacturing',
color: 'green',
data: [24916, 24064, 29742, 29851, 32490, 30282, 38121, 40434]
}],
});
Highcharts.chart('container3', {
chart: {
type: 'bar'
},
title: {
text: 'Chart 3'
},
subtitle: {
text: 'Source: thesolarfoundation.com'
},
series: [{
name: 'Sales & Distribution',
data: [11744, 17722, 16005, 19771, 20185, 24377, 32147, 39387]
}]
});
Highcharts.chart('container4', {
chart: {
backgroundColor: '#efefef',
type: 'pie'
},
title: {
text: 'Chart 4'
},
series: [{
name: 'Project Development',
color: 'purple',
data: [7988, 12169, 15112, 22452, 34400, 34227]
}]
});
Highcharts.chart('container5', {
chart: {
backgroundColor: '#c5c5c5',
type: 'spline'
},
title: {
text: 'Chart 5'
},
series: [{
name: 'Project Development',
color: 'purple',
data: [7988, 12169, 15112, 22452, 34400, 34227]
}]
});
// ############### CHARTS OPTIONS ###############
const toDataURL = url => fetch(url)
.then(response => response.blob())
.then(blob => new Promise((resolve, reject) => {
const reader = new FileReader()
reader.onloadend = () => resolve(reader.result)
reader.onerror = reject
reader.readAsDataURL(blob)
}));
$('#btn').click(function() {
var charts = Highcharts.charts,
exportUrl = 'https://export.highcharts.com/',
doc = new jsPDF(),
pageHeight = doc.internal.pageSize.getHeight(),
ajaxCalls = [],
promises = [],
yDocPos = 0,
k = 0,
chart,
imgUrl,
i,
j;
for (i = 0; i < charts.length; i++) {
chart = charts[i];
ajaxCalls.push($.ajax({
type: 'post',
url: exportUrl,
data: {
options: JSON.stringify(chart.userOptions),
type: 'image/png',
async: true
}
}));
}
$.when.apply(null, ajaxCalls).done(function() {
for (j = 0; j < arguments.length; j++) {
imgUrl = exportUrl + arguments[j][0];
promises[j] = toDataURL(imgUrl);
}
Promise.all(promises).then((values) => {
values.forEach((value, index) => {
var page = doc.internal.getCurrentPageInfo();
if (yDocPos > pageHeight - 150) {
doc.addPage();
yDocPos = 25;
k = 0;
} else {
yDocPos = 25 + k * 140;
}
doc.setFontSize(30);
doc.text(50, yDocPos, 'jspdf title for Chart' + (index + 1));
yDocPos += 15;
doc.addImage(value, 'PNG', 20, yDocPos);
k++;
});
doc.save('charts.pdf');
});
});
});<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.4.1/jspdf.debug.js" integrity="sha384-THVO/sM0mFD9h7dfSndI6TS0PgAGavwKvB5hAxRRvc0o9cPLohB0wb/PTA7LdUHs" crossorigin="anonymous"></script>
<button id="btn">Export PDF</button>
<br><br>
<div>
<div id="container1"></div>
<div id="container2"></div>
<div id="container3"></div>
<div id="container4"></div>
<div id="container5"></div>
</div>演示：
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