通过openlayer引用geoserver发布的矢量图,用jquery控制各个图层显示的函数,我是通过数字来控制的,1~24分别代表24个朝代,以此来写的JS函数。
定义的一些变量
var oSpanNum =1;//总的时期数
//var chaodai = ["static/jsonData/春秋.json","static/jsonData/战国.json", "static/jsonData/秦.json", "static/jsonData/西汉.json", "static/jsonData/东汉.json", "static/jsonData/曹魏.json","static/jsonData/西晋.json","static/jsonData/东晋.json","static/jsonData/刘宋.json","static/jsonData/北魏.json","static/jsonData/东魏.json","static/jsonData/北齐.json","static/jsonData/隋代.json","static/jsonData/唐.json","static/jsonData/后梁.json","static/jsonData/后唐.json","static/jsonData/后晋.json","static/jsonData/后汉.json","static/jsonData/后周.json","static/jsonData/北宋.json","static/jsonData/金.json","static/jsonData/元代.json","static/jsonData/明.json","static/jsonData/清代.json"]
var chaodainm = ["春秋","战国", "秦", "西汉", "东汉", "曹魏","西晋","东晋","刘宋","北魏","东魏","北齐","隋代","唐","后梁","后唐","后晋","后汉","后周","北宋","金","元代","明","清代"];
var chaidainme=['History:chunqiu','History:zhanguo','History:qin','History:xihan','History:donghan','History:caowei','History:xijin','History:dongjin','History:liusong','History:beiwei','History:dongwei','History:beiqi','History:sui','History:tang','History:houliang','History:houtang','History:houjin','History:houhan','History:houzhou','History:beisong','History:jin','History:yuan','History:ming','History:qing'];
var url = 'History:chunqiu';//初始化图层名
var map;
var wmslayer;
var tiled;
var vectorLayer;
var layer;
var Num;
下面是jquery
。
$(document).ready(function(){
$('.single-slider').jRange({
from: 1,
to: 24,
step: 0.1,
scale: ["春秋","战国", "秦", "西汉", "东汉", "曹魏","西晋","东晋","刘宋","北魏","东魏","北齐","隋代","唐","后梁","后唐","后晋","后汉","后周","北宋","金","元代","明","清代"],
width: 1000,
showLabels: false,
snap: true
});
$('.single-slider').change(function() {// 滑块的值改变,运行这个函数
oSpanNum=$(this).val();
//alert(oSpanNum);
changelayer();
//滑块的值改变的话,滑块的值赋值给方框,实现动态变化
});
});
// 控制图层显示的js函数
//geoserver模块
function sleep(numberMillis) {
var now = new Date();
var exitTime = now.getTime() + numberMillis;
while (true) {
now = new Date();
if (now.getTime() > exitTime)
return;
}
}
function changelayer() {
map.removeLayer(wmslayer);
map.removeLayer(layer);
Num=Math.round(oSpanNum-1);
url= chaidainme[Num];
loadgeo(url);
document.getElementById("txt").innerHTML = chaodainm[Num];
}
function loadgeo(URL){
layer = new ol.layer.Vector({//增加点击高亮的矢量图层
source: new ol.source.Vector(),
style: new ol.style.Style({
fill: new ol.style.Fill({
color: "#f00"
}),
stroke: new ol.style.Stroke({
color: "#ffff00",
width: 3
})
})
});
wmslayer = new ol.layer.Image({//wms图层
//extent:[114.79473845077413,34.36189456889595,122.6741768280149,38.12993904964089],
group:"WMS",
source:new ol.source.ImageWMS({
url:'http://localhost:8080/geoserver/History/wms',
wrapX: false,
params:{
'LAYERS':URL,
'FORMAT': 'image/png',
},
serverType: 'geoserver',
projection:'EPSG:4326'
})
});
map.addLayer(wmslayer);
map.addLayer(layer);
//点击高亮响应事件
map.on('click', function(e) {
// 创建一个请求
var featureRequest = new ol.format.WFS().writeGetFeature({
srsName: 'EPSG:4326', //坐标系
featureNS: 'http://geoserver.org/history', // 注意这个值必须为创建工作区时的命名空间URI
featurePrefix: 'History', //工作区的名称
featureTypes: [url], //所要访问的图层
maxFeatures: 1,
outputFormat: 'application/json',
//这里注意,ol4.5.6里面ol.format.filter.Intersects构造出来的WFS是1.1.0版本,这里的坐标中经纬度是反的
filter: new ol.format.filter.Intersects("the_geom", new ol.geom.Point([e.coordinate[1], e.coordinate[0]]), "EPSG:4326")
});//the_geom是geoserver发布图层的几何属性列的列名
// 发送请求
fetch('http://localhost:8080/geoserver/wfs', {
method: 'POST',
body: new XMLSerializer().serializeToString(featureRequest)
}).then(function(response) {
return response.json();
}).then(function(re) {
var feas = new ol.format.GeoJSON().readFeatures(re);
layer.getSource().clear();
layer.getSource().addFeatures(feas)
});
})
}
//打开页面直接执行的函数:
function init() {/*初始执行的方法*/
tiled =new ol.layer.Tile({
source:new ol.source.Stamen({
layer: 'watercolor'
})
})
map = new ol.Map({
target:'map',
layers:[
],
view:new ol.View({
center:[118,36],
zoom:7,
projection:'EPSG:4326'
})
});
map.addLayer(tiled);
changelayer();
}
html的滑块代码
<div id="map"></div>
<div class="timeslider">
<div>
<p id="txt">
</p>
</div><!--上面这部分是显示时期的方框的html-->
<div class="slider">
<input type="range" class="single-slider" id="slider" value="1" >
</div>
</div>
至于css样式代码,我这里就不再记录了,大家可以按照自己喜欢的样式改~
放上效果图供大家欣赏: