超圖iServer圖層過濾渲染服務

使用iServer做爲服務端，對已發出的超圖rest服務如何作過濾展現，使用的是Vue

一、須要引入的依賴

  import {LayerStatus} from "@supermap/iclient-common/iServer/LayerStatus"
  import {SetLayerStatusService} from '@supermap/iclient-common/iServer/SetLayerStatusService'
  import {SetLayerStatusParameters} from '@supermap/iclient-common/iServer/SetLayerStatusParameters'

二、過濾方法

  　　/**
       * 圖層過濾
       * @param _serviceUrl  超圖REST服務地址
       * @param _layerName   要過濾的圖層名字，通常叫  xxxx@xxxxx
       * @param _displayFilter  過濾條件  字符串類型 通常是好比'id>100 and (area >1000 or area <500)'
       */
      filterLayerContent(_serviceUrl, _layerName, _displayFilter) {
        let layerStatus = new LayerStatus({
          layerName: _layerName,
          displayFilter: _displayFilter
        })
        let setLayerStatusParameters = new SetLayerStatusParameters({
          layerStatusList: [layerStatus]
        })
        let setLayerStatusService = new SetLayerStatusService(_serviceUrl, {
          eventListeners: {
            "processCompleted": this.setLayerCompleted,
            "processFailed": this.setLayerFailed
          }
        })
        setLayerStatusService.processAsync(setLayerStatusParameters)
      },

      setLayerCompleted(_res) {
          let newSource = new TileSuperMapRest({
            url: this.templateBingdingInfo.service.url,
            wrapX: true,
            layersID: _res.result.newResourceID,
            tileGrid: createXYZ({extent: [-180, -90, 180, 90]})
          })
        ......
      },