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esri-leaflet底图加载（geojson数据绘制边界）.html
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esri-leaflet底图加载（geojson数据绘制边界）.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>
<a href="#fakelink">Menu Item
<span class="navbar-unread">1</span>
</a>
</li>
<li class="dropdown">
<a href="JavaScript:void(0)" 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_CQMap_IMG_MAPSERVER_PATH,urlTemplate.SYS_CQMap_IMG_LABEL_MAPSERVER_PATH], 17)'>影像地图</a>
</li>
<li>
<a id="mapbox_Vector" href='JavaScript:void(0)' onclick='setLayer([urlTemplate.SYS_CQMap_VEC_MAPSERVER_PATH], 17)'>矢量地图</a>
</li>
<li>
<a id="mapbox_Vector" href='JavaScript:void(0)' onclick='setLayer([urlTemplate.SYS_CQMap_DEM_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>
<script src="./lib/esri-leaflet-v2.1.2/dist/esri-leaflet.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/proj4js/2.4.4/proj4.js"></script>
<!-- leafleat插件 -->
<script src="./js/urlTemplate.js"></script>
<script>
let oMap = null;
let oLayer = [];
let oPolygon_VilPop = [];
oMap = L.map('mapDiv', {
crs: L.CRS.EPSG4326,
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_CQMap_IMG_MAPSERVER_PATH, urlTemplate.SYS_CQMap_IMG_LABEL_MAPSERVER_PATH], 17)
// 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) => {
var div = L.DomUtil.create('div', 'legend locateVP_legend'),
grades = [0, 50, 100, 200, 400],
labels = [],
from, to;
for (var 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) => {
var layer = e.target;
layer.setStyle({
weight: 6,
color: '#fff',
fillOpacity: 0.9,
dashArray: '0'
})
}
const resetHighlight = (e) => {
var layer = e.target;
layer.setStyle({
color: 'white',
weight: 3,
fillOpacity: 0.6,
dashArray: '10'
})
}
const zoomTo = (e) => {
oMap.fitBounds(e.target.getBounds());
}
</script>
</html>