本文实例为大家分享了Openlayers+EasyUI Tree动态实现图层控制的具体代码,供大家参考,具体内容如下功能介绍功能介绍主要功能主要功能主要功能根据openlayers3.0与easyUI tree 功能实现图层显隐控制功能,达到子节点选择实现单个图层的显隐,父节点选择实现所有图层的显隐。页面展示页面展示页面展示主要代码主要代码HTML+CSS
#xuanfu1 {
position: absolute;
top: 50px;
right: 40px;
background-color: rgba(134,149,237,0.7);
width: 170px;
height: 300px;
z-index: 1;
}
#xuanfu1 {
position: absolute;
top: 50px;
right: 40px;
background-color: rgba(134,149,237,0.7);
width: 170px;
height: 300px;
z-index: 1;
}













      JS
      $(document).ready(function () {
      $.ajax({
      url: "TCKZDataQuery",
      success: function (data) {
      var datatrans= JSON.parse(data);
      var dataArr = datatrans.rows;
      CreatTree(dataArr); //创建树
      AddLayers(dataArr); //添加图层
      },
      });
      TCKZguanlian(); //树与图层控制关联
      })

      //-----------创建图层控制树----------
      function CreatTree(dataArr) {
      $('#tt').tree({
      data: [{
      id: 1,
      text: '功能图层',
      state: 'open',

      }, {
      id: 2,
      text: '专题图层',
      state: 'open',
      children: [{

      id: 21,

      text: '铁路线',

      checked: true,
      }, {

      id: 22,

      text: '车站',

      checked: true,
      }]
      }, {
      id: 3,
      text: '卫星影像',
      checked: true,
      }
      ]
      });

      var node = $('#tt').tree('find', 1);
      var nodes = [{ id: '11', text: '绘制图层', checked: true }];
      if (node) {
      for (i = 0; i < dataArr.length; i++) {
      var kejian;
      if (dataArr[i].VISIBLE == 'true') {

      kejian = true;
      } else {

      kejian = false;
      }
      nodes.push({ id: dataArr[i].ID, text: dataArr[i].TCM, checked: kejian });
      }
      $('#tt').tree('append', {
      parent: node.target,
      data: nodes
      });
      }
      }
      //-----------树与图层控制关联------------
      function TCKZguanlian(){
      $("#tt").tree({
      onCheck: function (node) {
      var nodechi = $('#tt').tree('find', node.id);
      var nodechildren = $('#tt').tree("getChildren", nodechi.target);

      var AllLayers = map.getLayers().a;
      if (nodechildren == null || nodechildren=='') { //如果为子节点

      for (i = 0; i < AllLayers.length; i++) {

      var tcname1 = node.text;

      var tcname2 = AllLayers[i].get('title');

      if (tcname1 == tcname2) {

      AllLayers[i].setVisible(node.checked);

      }

      }
      } else {
      //如果为父节点

      for (j = 0; j < nodechildren.length; j++) {

      var tcname1 = nodechildren[j].text;

      for (i = 0; i < AllLayers.length; i++) {

      var tcname2 = AllLayers[i].get('title');

      if (tcname1 == tcname2) {

      AllLayers[i].setVisible(node.checked);

      }

      }

      }
      }
      }
      })
      }

      //定义地图
      var map = new ol.Map({
      controls: ol.control.defaults({
      attribution: false
      }).extend([
      //定义鼠标获取坐标控件
      new ol.control.MousePosition({
      projection: 'EPSG:4326',
      coordinateFormat: ol.coordinate.createStringXY(5)//坐标精确度
      }),
      new ol.control.OverviewMap(),//缩略图控件
      new ol.control.ScaleLine(),// 比例尺控件
      new ol.control.ZoomSlider(),// 缩放刻度控件
      ]),
      target: 'map',
      layers: [
      //铁路线
      new ol.layer.Tile({
      title: '铁路线', // 定义铁路线wms地图,geoserver发布
      visible: true,
      source: new ol.source.TileWMS({

      url: 'http://127.0.0.1:8085/geoserver/lzjgjt/wms',

      params: {

      'FORMAT': 'image/png',

      'VERSION': '1.1.1',

      tiled: true,

      "LAYERS": 'lzjgjt:xianlu_polyline',

      "exceptions": 'application/vnd.ogc.se_inimage',

      tilesOrigin: 93.408493 + "," + 32.439911

      }
      })
      }),
      //车站
      new ol.layer.Tile({
      title: '车站',
      visible: true,
      source: new ol.source.TileWMS({

      url: 'http://127.0.0.1:8085/geoserver/lzjgjt/wms',

      params: {

      'FORMAT': 'image/png',

      'VERSION': '1.1.1',

      tiled: true,

      "LAYERS": 'lzjgjt:chezhan_point',

      "exceptions": 'application/vnd.ogc.se_inimage',

      tilesOrigin: 93.487889 + "," + 32.441091

      }
      })
      }),

      ],
      view: new ol.View({
      center: ol.proj.fromLonLat([104.06684, 34.39373]),
      zoom: 6,
      //限制地图缩放级别
      minZoom: 4,
      maxZoom: 16,
      })
      });
      $(document).ready(function () {
      $.ajax({
      url: "TCKZDataQuery",
      success: function (data) {
      var datatrans= JSON.parse(data);
      var dataArr = datatrans.rows;
      CreatTree(dataArr); //创建树
      AddLayers(dataArr); //添加图层
      },
      });
      TCKZguanlian(); //树与图层控制关联
      })

      //-----------创建图层控制树----------
      function CreatTree(dataArr) {
      $('#tt').tree({
      data: [{
      id: 1,
      text: '功能图层',
      state: 'open',

      }, {
      id: 2,
      text: '专题图层',
      state: 'open',
      children: [{

      id: 21,

      text: '铁路线',

      checked: true,
      }, {

      id: 22,

      text: '车站',

      checked: true,
      }]
      }, {
      id: 3,
      text: '卫星影像',
      checked: true,
      }
      ]
      });

      var node = $('#tt').tree('find', 1);
      var nodes = [{ id: '11', text: '绘制图层', checked: true }];
      if (node) {
      for (i = 0; i < dataArr.length; i++) {
      var kejian;
      if (dataArr[i].VISIBLE == 'true') {

      kejian = true;
      } else {

      kejian = false;
      }
      nodes.push({ id: dataArr[i].ID, text: dataArr[i].TCM, checked: kejian });
      }
      $('#tt').tree('append', {
      parent: node.target,
      data: nodes
      });
      }
      }
      //-----------树与图层控制关联------------
      function TCKZguanlian(){
      $("#tt").tree({
      onCheck: function (node) {
      var nodechi = $('#tt').tree('find', node.id);
      var nodechildren = $('#tt').tree("getChildren", nodechi.target);

      var AllLayers = map.getLayers().a;
      if (nodechildren == null || nodechildren=='') { //如果为子节点

      for (i = 0; i < AllLayers.length; i++) {

      var tcname1 = node.text;

      var tcname2 = AllLayers[i].get('title');

      if (tcname1 == tcname2) {

      AllLayers[i].setVisible(node.checked);

      }

      }
      } else {
      //如果为父节点

      for (j = 0; j < nodechildren.length; j++) {

      var tcname1 = nodechildren[j].text;

      for (i = 0; i < AllLayers.length; i++) {

      var tcname2 = AllLayers[i].get('title');

      if (tcname1 == tcname2) {

      AllLayers[i].setVisible(node.checked);

      }

      }

      }
      }
      }
      })
      }

      //定义地图
      var map = new ol.Map({
      controls: ol.control.defaults({
      attribution: false
      }).extend([
      //定义鼠标获取坐标控件
      new ol.control.MousePosition({
      projection: 'EPSG:4326',
      coordinateFormat: ol.coordinate.createStringXY(5)//坐标精确度
      }),
      new ol.control.OverviewMap(),//缩略图控件
      new ol.control.ScaleLine(),// 比例尺控件
      new ol.control.ZoomSlider(),// 缩放刻度控件
      ]),
      target: 'map',
      layers: [
      //铁路线
      new ol.layer.Tile({
      title: '铁路线', // 定义铁路线wms地图,geoserver发布
      visible: true,
      source: new ol.source.TileWMS({

      url: 'http://127.0.0.1:8085/geoserver/lzjgjt/wms',

      params: {

      'FORMAT': 'image/png',

      'VERSION': '1.1.1',

      tiled: true,

      "LAYERS": 'lzjgjt:xianlu_polyline',

      "exceptions": 'application/vnd.ogc.se_inimage',

      tilesOrigin: 93.408493 + "," + 32.439911

      }
      })
      }),
      //车站
      new ol.layer.Tile({
      title: '车站',
      visible: true,
      source: new ol.source.TileWMS({

      url: 'http://127.0.0.1:8085/geoserver/lzjgjt/wms',

      params: {

      'FORMAT': 'image/png',

      'VERSION': '1.1.1',

      tiled: true,

      "LAYERS": 'lzjgjt:chezhan_point',

      "exceptions": 'application/vnd.ogc.se_inimage',

      tilesOrigin: 93.487889 + "," + 32.441091

      }
      })
      }),

      ],
      view: new ol.View({
      center: ol.proj.fromLonLat([104.06684, 34.39373]),
      zoom: 6,
      //限制地图缩放级别
      minZoom: 4,
      maxZoom: 16,
      })
      });C#
      #region 图层控制
      public ActionResult TCKZDataQuery()
      {
      string sql = " select * from TUCENG_DIC t ";
      string jsonData = GetJeJsonData(db.Database.Connection.ConnectionString, sql, Request);
      return Content(jsonData);
      }
      #endregion
      #region 图层控制
      public ActionResult TCKZDataQuery()
      {
      string sql = " select * from TUCENG_DIC t ";
      string jsonData = GetJeJsonData(db.Database.Connection.ConnectionString, sql, Request);
      return Content(jsonData);
      }
      #endregion图层数据格式以上就是本文的全部内容,希望对大家的学习有所帮助。