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demo6.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<title>esri-leaflet底图加载（geojson数据绘制边界）</title>
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link
rel="stylesheet"
type="text/css"
media="screen"
href="./lib/Flat-UI-master/dist/css/vendor/bootstrap/css/bootstrap.min.css"
/>
<link rel="stylesheet" href="./lib/Flat-UI-master/dist/css/flat-ui.min.css" />
<link rel="stylesheet" href="./lib/leaflet/leaflet.css" />
<style>
.legend {
padding: 6px 8px;
font: 14px/16px Arial, Helvetica, sans-serif;
background: white;
background: rgba(255, 255, 255, 0.8);
box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
border-radius: 3px;
text-align: left;
line-height: 18px;
color: #555;
}
.legend i {
width: 18px;
height: 18px;
float: left;
margin-right: 8px;
opacity: 0.7;
}
</style>
</head>
<body>
<nav
class="navbar navbar-inverse navbar-embossed"
role="navigation"
style="margin-bottom: 0; border-radius: 0; z-index: 2"
>
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-collapse-01">
<span class="sr-only">Toggle navigation</span>
</button>
<a class="navbar-brand" href="#">Flat UI</a>
</div>
<div class="collapse navbar-collapse" id="navbar-collapse-01">
<ul class="nav navbar-nav navbar-left">
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown"
>地图切换
<b class="caret"></b>
</a>
<ul class="dropdown-menu">
<li>
<a
id="mapbox_Image"
href="JavaScript:void(0)"
onclick="setLayer([urlTemplate.SYS_IMG_MAPSERVER_PATH,urlTemplate.SYS_IMG_LABEL_MAPSERVER_PATH], 19)"
>影像地图加标注</a
>
</li>
<li>
<a
id="mapbox_Vector"
href="JavaScript:void(0)"
onclick="setLayer([urlTemplate.SYS_VEC_MAPSERVER_PATH], 19)"
>矢量地图</a
>
</li>
<li>
<a
id="mapbox_Vector"
href="JavaScript:void(0)"
onclick="setLayer([urlTemplate.SYS_DEM_MAPSERVER_PATH, urlTemplate.SYS_DEM_LABELS_MAPSERVER_PATH], 13)"
>地貌地图</a
>
</li>
</ul>
</li>
<li>
<a href="JavaScript:void(0)" onclick="population()">绘制边界</a>
</li>
</ul>
<form class="navbar-form navbar-right" action="#" role="search">
<div class="form-group">
<div class="input-group">
<input class="form-control" id="navbarInput-01" type="search" placeholder="Search" />
<span class="input-group-btn">
<button type="submit" class="btn">
<span class="fui-search"></span>
</button>
</span>
</div>
</div>
</form>
</div>
<!-- /.navbar-collapse -->
</nav>
<div class="container-fluid">
<div class="row">
<div class="col-xs-12" id="mapDiv" style="position: absolute; top: 53px; bottom: 0; z-index: 1"></div>
<!-- 地图面板 -->
<!--底部状态栏部分 -->
</div>
</div>
</body>
<script src="./lib/Flat-UI-master/dist/js/vendor/jquery.min.js"></script>
<script src="./lib/Flat-UI-master/dist/js/flat-ui.js"></script>
<script src="./lib/leaflet/leaflet.js"></script>
<!-- leafleat插件 -->
<script src="./lib/esri-leaflet-v2.1.2/dist/esri-leaflet.js"></script>
<script src="https://cdn.bootcdn.net/ajax/libs/proj4js/2.6.2/proj4.js"></script>
<script src="./js/urlTemplate.js"></script>
<script>
let oMap = null;
let oLayer = [];
let oPolygon_VilPop = [];
oMap = L.map('mapDiv', {
crs: L.CRS.EPSG3857,
zoomControl: false,
minZoom: 7,
attributionControl: false,
}).setView([29.59, 106.59], 12); //定位在重庆
const legend = L.control({
position: 'bottomright',
});
const setLayer = (layerUrls, maxZoom) => {
for (let i = 0; i < oLayer.length; i++) {
oMap.removeLayer(oLayer[i]);
}
oLayer = [];
layerUrls.map((item) => {
oLayer.push(
L.esri
.tiledMapLayer({
url: item,
useCors: false, //是否浏览器在跨域的情况下使用GET请求。
maxZoom: maxZoom,
})
.addTo(oMap)
);
});
};
//加载底图
setLayer([urlTemplate.SYS_IMG_MAPSERVER_PATH, urlTemplate.SYS_IMG_LABEL_MAPSERVER_PATH], 19);
// 请求geojson并处理数据
const population = () => {
$.get('./js/geojson.json', function (response) {
const poplData = response.data;
const PolygonsCenter = response.geopoint;
drawPolygons(poplData, PolygonsCenter);
});
};
// 绘制边界
const drawPolygons = (poplData, PolygonsCenter) => {
for (const i in poplData) {
poplData[i].geoJson = JSON.parse(poplData[i].geoJson);
oPolygon_VilPop[i] = L.geoJSON(poplData[i].geoJson, {
style: function () {
return {
color: 'white',
fillColor: getBgColor(poplData[i].population), //获取边界的填充色
fillOpacity: 0.6,
weight: 3,
dashArray: '10',
};
},
})
.bindTooltip(poplData[i].villageName + '<br><br>人口' + poplData[i].population + '人', {
direction: 'top',
})
.on({
mouseover: highlight, //鼠标移动上去高亮
mouseout: resetHighlight, //鼠标移出恢复原样式
click: zoomTo, //点击最大化
})
.addTo(oMap);
}
// 添加图例
legend.onAdd = legendHtml;
legend.addTo(oMap);
// 定位到该界限的中心位置
oMap.flyToBounds(PolygonsCenter);
};
const getBgColor = (d) => {
return d > 400
? '#800026'
: d > 300
? '#BD0026'
: d > 200
? '#FC4E2A'
: d > 100
? '#FD8D3C'
: d > 50
? '#FED976'
: '#FFEDA0';
};
const legendHtml = (map) => {
let div = L.DomUtil.create('div', 'legend locateVP_legend'),
grades = [0, 50, 100, 200, 400],
labels = [],
from,
to;
for (const i = 0; i < grades.length; i++) {
from = grades[i];
to = grades[i + 1];
labels.push(
'<i style="background:' + getBgColor(from + 1) + '"></i> ' + from + (to ? ' ∼ ' + to + '人' : '以上')
);
}
div.innerHTML = labels.join('<br>');
return div;
};
const highlight = (e) => {
const layer = e.target;
layer.setStyle({
weight: 6,
color: '#fff',
fillOpacity: 0.9,
dashArray: '0',
});
};
const resetHighlight = (e) => {
const layer = e.target;
layer.setStyle({
color: 'white',
weight: 3,
fillOpacity: 0.6,
dashArray: '10',
});
};
const zoomTo = (e) => {
oMap.fitBounds(e.target.getBounds());
};
</script>
</html>