cesium結合geoserver利用WFS服務實現圖層新增(附源碼下載)

前言

cesium 官網的api文檔介紹地址cesium官網api，裏面詳細的介紹 cesium 各個類的介紹，還有就是在線例子：cesium 官網在線例子，這個也是學習 cesium 的好素材。

內容概覽

1.cesium結合geoserver利用WFS服務實現圖層新增功能
2.源代碼demo下載

效果圖以下：

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

本篇主要是cesium經過調用geoserver發佈的地圖服務WFS來達到圖層新增記錄的目的。與GeoServer的WFS進行基於Rest交互關鍵就在於請求參數，值得注意的是這些請求最好採用POST方法發送。查詢能夠採用json，但增長，刪除，修改都只能採用XML形式Transaction

• geoserver默認WFS服務是沒有編輯操做權限的，因此須要在geoserver設置權限，容許編輯操做才行，截圖以下：
  
  
  
  

• 部分核心代碼：

//繪製geojson圖層樣式
var geoJsonStyle = {
stroke: Cesium.Color.YELLOW,
strokeWidth: 3,
fill: Cesium.Color.YELLOW.withAlpha(0.1)
};
var geoserverUrl = 'http://localhost:8080/geoserver/WebGIS';
var image_Source = new Cesium.UrlTemplateImageryProvider({
//url: 'http://mt0.google.cn/vt/lyrs=t,r&hl=zh-CN&gl=cn&x={x}&y={y}&z={z}',
//url: 'https://server.arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x}',
url: "http://map.geoq.cn/ArcGIS/rest/services/ChinaOnlineStreetPurplishBlue/MapServer/tile/{z}/{y}/{x}",
//tilingScheme : new Cesium.GeographicTilingScheme(),
credit: ''
});
var viewer = new Cesium.Viewer('map', {
geocoder: false,
homeButton: false,
sceneModePicker: false,
fullscreenButton: false,
vrButton: false,
baseLayerPicker: false,
infoBox: false,
selectionIndicator: false,
animation: false,
timeline: false,
shouldAnimate: true,
navigationHelpButton: false,
navigationInstructionsInitiallyVisible: false,
imageryProvider: image_Source
});
 
//加載geoserver wms服務
var wms = new Cesium.WebMapServiceImageryProvider({
url: geoserverUrl+'/wms',
layers: 'WebGIS:testLayer',
parameters: {
service : 'WMS',
format: 'image/png',
transparent: true,
}
});
viewer.imageryLayers.addImageryProvider(wms);
 
 
viewer._cesiumWidget._creditContainer.style.display = "none";
viewer.scene.globe.enableLighting = false;
//viewer.scene.globe.depthTestAgainstTerrain = true;
viewer.scene.globe.showGroundAtmosphere = false;
 
viewer.camera.flyTo({
destination : Cesium.Cartesian3.fromDegrees(113.90271877, 22.95186415,30000.0)
});
 
 
var handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);
var ellipsoid = viewer.scene.globe.ellipsoid;
handler.setInputAction(function (movement) {
//經過指定的橢球或者地圖對應的座標系，將鼠標的二維座標轉換爲對應橢球體三維座標
cartesian = viewer.camera.pickEllipsoid(movement.position, ellipsoid);
if (cartesian) {
//將笛卡爾座標轉換爲地理座標
var cartographic = ellipsoid.cartesianToCartographic(cartesian);
//將弧度轉爲度的十進制度表示
var longitudeString = Cesium.Math.toDegrees(cartographic.longitude);
var latitudeString = Cesium.Math.toDegrees(cartographic.latitude);
var point = longitudeString + ',' + latitudeString;
queryByPoint(point,'testLayer',callbackLastQueryWFSService);
}
}, Cesium.ScreenSpaceEventType.LEFT_CLICK);
 
 
var drawTool = new DrawTool({
viewer: viewer,
hasEdit: false
});
 
 
//繪製矩形
$("#rect_btn").click(function(){
//clearMap()
if (!drawTool) return;
drawTool.startDraw({
type: "rectangle",
style: {
heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
//material:Cesium.Color.WHITE
material:Cesium.Color.fromRgba(0x67ADDFFF)
},
success: function (evt) {
//console.log('evt',evt);
var leftup = evt.leftup;
var rightdown = evt.rightdown;
//世界座標轉地理座標（弧度）
var leftupcartographic = viewer.scene.globe.ellipsoid.cartesianToCartographic(leftup);
var rightdowncartographic = viewer.scene.globe.ellipsoid.cartesianToCartographic(rightdown);
//console.log('leftupcartographic',leftupcartographic);
//地理座標（弧度）轉經緯度座標
var leftuppoint = [leftupcartographic.longitude / Math.PI * 180, leftupcartographic.latitude / Math.PI * 180];
console.log('leftuppoint',leftuppoint);
var rightdownpoint = [rightdowncartographic.longitude / Math.PI * 180, rightdowncartographic.latitude / Math.PI * 180];
console.log('rightdown',rightdown);
var extent = [leftuppoint[0].toFixed(6),leftuppoint[1].toFixed(6),rightdownpoint[0].toFixed(6),rightdownpoint[1].toFixed(6)];
var polygon = null;
if(extent && extent.length>0){
//構造polygon
polygon = '';
polygon += extent[0] + ',' + extent[1] + ' ' ;
polygon += extent[2] + ',' + extent[1] + ' ' ;
polygon += extent[2] + ',' + extent[3] + ' ' ;
polygon += extent[0] + ',' + extent[3] + ' ' ;
polygon += extent[0] + ',' + extent[1] + ' ' ;
}
console.log('polygon',polygon);
if(polygon){
var content = '<span>名稱:</span><input type="text" id="estate_num" /></br><span>備註:</span><input type="text" id="holder_nam" /></br><button type="button" id="addBtn">新增</button>';
$("#infowindow").show();
$("#infowindow").empty();
$("#infowindow").append(content);
$("#addBtn").click(function(){
console.log('點擊事件響應');
addLayers(polygon,$("#estate_num").val(),$("#holder_nam").val(),callbackAddLayersWFSService);
});
}
}
});
});

• 圖層新增函數

/*圖層新增
*@method addLayers
*@param polygon 圖形
*@param fieldValue1 字段1值
*@param fieldValue2 字段2值
*@return callback
*/
function addLayers(polygon,fieldValue1,fieldValue2, callback){
var xml = '<wfs:Transaction service="WFS" version="1.0.0" xmlns:opengis="http://webgis.com" xmlns:wfs="http://www.opengis.net/wfs" xmlns:ogc="http://www.opengis.net/ogc" xmlns:gml="http://www.opengis.net/gml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wfs http://schemas.opengis.net/wfs/1.0.0/WFS-basic.xsd">';
……

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