技术标签： echarts
在上一篇ECharts入门后，主要想用ECharts做tree图，但是看了好多都无法实现从本地读取json文件来实现的，涉及到ajax跨域问题，一直以为问题无法解决，看了别人做的demo也解决不了遇到的问题。
现在把解决后的结果贴上来
首先保证json文件是正确的，以官方例子为准flare.json
标签主要为name children 在遇到无法解析时，先查看json格式，保证json格式正确，包括有无 “，”都会造成无法解析
{
"name": "flare",
"children": [
{
"name": "{a|analytics}",
"label":{
"rich":{
"a":{
"color":"blue",
"fontSize":"16"
}
}
},
"lineStyle":{
"color":"red",
"width":"5"
},
"children": [
{
"name": "cluster",
"children": [
{"name": "AgglomerativeCluster", "value": 3938},
{"name": "CommunityStructure", "value": 3812},
{"name": "HierarchicalCluster", "value": 6714},
{"name": "MergeEdge", "value": 743}
]
},
{
"name": "graph",
"children": [
{"name": "BetweennessCentrality", "value": 3534},
{"name": "LinkDistance", "value": 5731},
{"name": "MaxFlowMinCut", "value": 7840},
{"name": "ShortestPaths", "value": 5914},
{"name": "SpanningTree", "value": 3416}
]
},
{
"name": "optimization",
"children": [
{"name": "AspectRatioBanker", "value": 7074}
]
}
]
},
{
"name": "animate",
"children": [
{"name": "Easing", "value": 17010},
{"name": "FunctionSequence", "value": 5842},
{
"name": "interpolate",
"children": [
{"name": "ArrayInterpolator", "value": 1983},
{"name": "ColorInterpolator", "value": 2047},
{"name": "DateInterpolator", "value": 1375},
{"name": "Interpolator", "value": 8746},
{"name": "MatrixInterpolator", "value": 2202},
{"name": "NumberInterpolator", "value": 1382},
{"name": "ObjectInterpolator", "value": 1629},
{"name": "PointInterpolator", "value": 1675},
{"name": "RectangleInterpolator", "value": 2042}
]
},
{"name": "ISchedulable", "value": 1041},
{"name": "Parallel", "value": 5176},
{"name": "Pause", "value": 449},
{"name": "Scheduler", "value": 5593},
{"name": "Sequence", "value": 5534},
{"name": "Transition", "value": 9201},
{"name": "Transitioner", "value": 19975},
{"name": "TransitionEvent", "value": 1116},
{"name": "Tween", "value": 6006}
]
},
{
"name": "data",
"children": [
{
"name": "converters",
"children": [
{"name": "Converters", "value": 721},
{"name": "DelimitedTextConverter", "value": 4294},
{"name": "GraphMLConverter", "value": 9800},
{"name": "IDataConverter", "value": 1314},
{"name": "JSONConverter", "value": 2220}
]
},
{"name": "DataField", "value": 1759},
{"name": "DataSchema", "value": 2165},
{"name": "DataSet", "value": 586},
{"name": "DataSource", "value": 3331},
{"name": "DataTable", "value": 772},
{"name": "DataUtil", "value": 3322}
]
},
{
"name": "display",
"children": [
{"name": "DirtySprite", "value": 8833},
{"name": "LineSprite", "value": 1732},
{"name": "RectSprite", "value": 3623},
{"name": "TextSprite", "value": 10066}
]
},
{
"name": "flex",
"children": [
{"name": "FlareVis", "value": 4116}
]
},
{
"name": "physics",
"children": [
{"name": "DragForce", "value": 1082},
{"name": "GravityForce", "value": 1336},
{"name": "IForce", "value": 319},
{"name": "NBodyForce", "value": 10498},
{"name": "Particle", "value": 2822},
{"name": "Simulation", "value": 9983},
{"name": "Spring", "value": 2213},
{"name": "SpringForce", "value": 1681}
]
},
{
"name": "query",
"children": [
{"name": "AggregateExpression", "value": 1616},
{"name": "And", "value": 1027},
{"name": "Arithmetic", "value": 3891},
{"name": "Average", "value": 891},
{"name": "BinaryExpression", "value": 2893},
{"name": "Comparison", "value": 5103},
{"name": "CompositeExpression", "value": 3677},
{"name": "Count", "value": 781},
{"name": "DateUtil", "value": 4141},
{"name": "Distinct", "value": 933},
{"name": "Expression", "value": 5130},
{"name": "ExpressionIterator", "value": 3617},
{"name": "Fn", "value": 3240},
{"name": "If", "value": 2732},
{"name": "IsA", "value": 2039},
{"name": "Literal", "value": 1214},
{"name": "Match", "value": 3748},
{"name": "Maximum", "value": 843},
{
"name": "methods",
"children": [
{"name": "add", "value": 593},
{"name": "and", "value": 330},
{"name": "average", "value": 287},
{"name": "count", "value": 277},
{"name": "distinct", "value": 292},
{"name": "div", "value": 595},
{"name": "eq", "value": 594},
{"name": "fn", "value": 460},
{"name": "gt", "value": 603},
{"name": "gte", "value": 625},
{"name": "iff", "value": 748},
{"name": "isa", "value": 461},
{"name": "lt", "value": 597},
{"name": "lte", "value": 619},
{"name": "max", "value": 283},
{"name": "min", "value": 283},
{"name": "mod", "value": 591},
{"name": "mul", "value": 603},
{"name": "neq", "value": 599},
{"name": "not", "value": 386},
{"name": "or", "value": 323},
{"name": "orderby", "value": 307},
{"name": "range", "value": 772},
{"name": "select", "value": 296},
{"name": "stddev", "value": 363},
{"name": "sub", "value": 600},
{"name": "sum", "value": 280},
{"name": "update", "value": 307},
{"name": "variance", "value": 335},
{"name": "where", "value": 299},
{"name": "xor", "value": 354},
{"name": "-", "value": 264}
]
},
{"name": "Minimum", "value": 843},
{"name": "Not", "value": 1554},
{"name": "Or", "value": 970},
{"name": "Query", "value": 13896},
{"name": "Range", "value": 1594},
{"name": "StringUtil", "value": 4130},
{"name": "Sum", "value": 791},
{"name": "Variable", "value": 1124},
{"name": "Variance", "value": 1876},
{"name": "Xor", "value": 1101}
]
},
{
"name": "scale",
"children": [
{"name": "IScaleMap", "value": 2105},
{"name": "LinearScale", "value": 1316},
{"name": "LogScale", "value": 3151},
{"name": "OrdinalScale", "value": 3770},
{"name": "QuantileScale", "value": 2435},
{"name": "QuantitativeScale", "value": 4839},
{"name": "RootScale", "value": 1756},
{"name": "Scale", "value": 4268},
{"name": "ScaleType", "value": 1821},
{"name": "TimeScale", "value": 5833}
]
},
{
"name": "util",
"children": [
{"name": "Arrays", "value": 8258},
{"name": "Colors", "value": 10001},
{"name": "Dates", "value": 8217},
{"name": "Displays", "value": 12555},
{"name": "Filter", "value": 2324},
{"name": "Geometry", "value": 10993},
{
"name": "heap",
"children": [
{"name": "FibonacciHeap", "value": 9354},
{"name": "HeapNode", "value": 1233}
]
},
{"name": "IEvaluable", "value": 335},
{"name": "IPredicate", "value": 383},
{"name": "IValueProxy", "value": 874},
{
"name": "math",
"children": [
{"name": "DenseMatrix", "value": 3165},
{"name": "IMatrix", "value": 2815},
{"name": "SparseMatrix", "value": 3366}
]
},
{"name": "Maths", "value": 17705},
{"name": "Orientation", "value": 1486},
{
"name": "palette",
"children": [
{"name": "ColorPalette", "value": 6367},
{"name": "Palette", "value": 1229},
{"name": "ShapePalette", "value": 2059},
{"name": "SizePalette", "value": 2291}
]
},
{"name": "Property", "value": 5559},
{"name": "Shapes", "value": 19118},
{"name": "Sort", "value": 6887},
{"name": "Stats", "value": 6557},
{"name": "Strings", "value": 22026}
]
},
{
"name": "vis",
"children": [
{
"name": "axis",
"children": [
{"name": "Axes", "value": 1302},
{"name": "Axis", "value": 24593},
{"name": "AxisGridLine", "value": 652},
{"name": "AxisLabel", "value": 636},
{"name": "CartesianAxes", "value": 6703}
]
},
{
"name": "controls",
"children": [
{"name": "AnchorControl", "value": 2138},
{"name": "ClickControl", "value": 3824},
{"name": "Control", "value": 1353},
{"name": "ControlList", "value": 4665},
{"name": "DragControl", "value": 2649},
{"name": "ExpandControl", "value": 2832},
{"name": "HoverControl", "value": 4896},
{"name": "IControl", "value": 763},
{"name": "PanZoomControl", "value": 5222},
{"name": "SelectionControl", "value": 7862},
{"name": "TooltipControl", "value": 8435}
]
},
{
"name": "data",
"children": [
{"name": "Data", "value": 20544},
{"name": "DataList", "value": 19788},
{"name": "DataSprite", "value": 10349},
{"name": "EdgeSprite", "value": 3301},
{"name": "NodeSprite", "value": 19382},
{
"name": "render",
"children": [
{"name": "ArrowType", "value": 698},
{"name": "EdgeRenderer", "value": 5569},
{"name": "IRenderer", "value": 353},
{"name": "ShapeRenderer", "value": 2247}
]
},
{"name": "ScaleBinding", "value": 11275},
{"name": "Tree", "value": 7147},
{"name": "TreeBuilder", "value": 9930}
]
},
{
"name": "events",
"children": [
{"name": "DataEvent", "value": 2313},
{"name": "SelectionEvent", "value": 1880},
{"name": "TooltipEvent", "value": 1701},
{"name": "VisualizationEvent", "value": 1117}
]
},
{
"name": "legend",
"children": [
{"name": "Legend", "value": 20859},
{"name": "LegendItem", "value": 4614},
{"name": "LegendRange", "value": 10530}
]
},
{
"name": "operator",
"children": [
{
"name": "distortion",
"children": [
{"name": "BifocalDistortion", "value": 4461},
{"name": "Distortion", "value": 6314},
{"name": "FisheyeDistortion", "value": 3444}
]
},
{
"name": "encoder",
"children": [
{"name": "ColorEncoder", "value": 3179},
{"name": "Encoder", "value": 4060},
{"name": "PropertyEncoder", "value": 4138},
{"name": "ShapeEncoder", "value": 1690},
{"name": "SizeEncoder", "value": 1830}
]
},
{
"name": "filter",
"children": [
{"name": "FisheyeTreeFilter", "value": 5219},
{"name": "GraphDistanceFilter", "value": 3165},
{"name": "VisibilityFilter", "value": 3509}
]
},
{"name": "IOperator", "value": 1286},
{
"name": "label",
"children": [
{"name": "Labeler", "value": 9956},
{"name": "RadialLabeler", "value": 3899},
{"name": "StackedAreaLabeler", "value": 3202}
]
},
{
"name": "layout",
"children": [
{"name": "AxisLayout", "value": 6725},
{"name": "BundledEdgeRouter", "value": 3727},
{"name": "CircleLayout", "value": 9317},
{"name": "CirclePackingLayout", "value": 12003},
{"name": "DendrogramLayout", "value": 4853},
{"name": "ForceDirectedLayout", "value": 8411},
{"name": "IcicleTreeLayout", "value": 4864},
{"name": "IndentedTreeLayout", "value": 3174},
{"name": "Layout", "value": 7881},
{"name": "NodeLinkTreeLayout", "value": 12870},
{"name": "PieLayout", "value": 2728},
{"name": "RadialTreeLayout", "value": 12348},
{"name": "RandomLayout", "value": 870},
{"name": "StackedAreaLayout", "value": 9121},
{"name": "TreeMapLayout", "value": 9191}
]
},
{"name": "Operator", "value": 2490},
{"name": "OperatorList", "value": 5248},
{"name": "OperatorSequence", "value": 4190},
{"name": "OperatorSwitch", "value": 2581},
{"name": "SortOperator", "value": 2023}
]
},
{"name": "Visualization", "value": 16540}
]
}
]
}其次就是html
此处要注意的有两个地方
1.必须引用jquery的script，即 <script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script>
2.$.getJSON('data.json', function (data) 官网上是$.get('data.json', function (data)，但此时是直接从本地访问JSON，故必须使用前一种形式
<!DOCTYPE html>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<html>
<head>
<meta charset="UTF-8">
<!--include ECharts document-->
<script src="echarts.min.js" charset="UTF-8"></script>
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script>
<title>
ECharts de Hello World
</title>
</head>
<body>
<!--prepare a DOM with size for ECharts-->
<div id="main" style="width: 600px;height: 400px;"></div>
<div id="main2" style="width: 600px;height: 400px;"></div>
<script type="text/javascript">
var myChart = echarts.init(document.getElementById('main'));
myChart.showLoading();
$.getJSON('data.json', function (data) {
myChart.hideLoading();
echarts.util.each(data.children, function (datum, index) {
index % 2 === 0 && (datum.collapsed = true);
});
myChart.setOption(option = {
tooltip: {
trigger: 'item',
triggerOn: 'mousemove'
},
series: [
{
type: 'tree',
data: [data],
top: '1%',
left: '7%',
bottom: '1%',
right: '20%',
symbolSize: 7,
label: {
normal: {
position: 'left',
verticalAlign: 'middle',
align: 'right',
fontSize: 11
}
},
leaves: {
label: {
normal: {
position: 'right',
verticalAlign: 'middle',
align: 'left'
}
}
},
expandAndCollapse: true,
animationDuration: 550,
animationDurationUpdate: 750
}
]
});
});
</script>
</body>
</html>
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