Question

实际情况是在Map初始化的开始定义了带有附加CQL参数的WMS请求。

当选择后更改CQL参数时，初始WMSGetFeatureInfo（wmsGetFeatureInfoOptions）似乎无法更改。

另一方面，当更改用于显示WMS的CQL参数时，可以使用mergeNewParams在GWT-OPenLayers中完成此操作

final WMSParams wmsParams = new WMSParams（）; wmsParams.setCQLFilter（this.makeCqlString（））; wmsParams.setParameter（（（Double）Math.random（））。toString（），（（Double）Math.random（））。toString（））; this.infoWMS.mergeNewParams（wmsParams）;

buildWMSOptions（openLayers）应该为wmsGetFeatureInfoOptions做类似的事情。

Answer 1

对问题的回答是重新发出原始的wmsGetFeatureInfo并在原始时更改CQL参数时重建它

    public void reDrawInfoLayer()
    {
        final WMSParams wmsParams = new WMSParams();
        wmsParams.setCQLFilter(this.makeCqlString());
        wmsParams.setParameter(((Double) Math.random()).toString(), ((Double) Math.random()).toString());
        this.infoWMS.mergeNewParams(wmsParams);
        this.infoWMS.redraw();

        if (mapPanel.getWmsGetFeatureInfo() != null)
        {
            mapPanel.getWmsGetFeatureInfo().disable();
            mapPanel.getWmsGetFeatureInfo().deactivate();
            mapPanel.getMap().removeControl(mapPanel.getWmsGetFeatureInfo());
        }

        mapPanel.getWmsGetFeatureInfoOptions().setInfoFormat(GetFeatureInfoFormat.GML.toString());
        mapPanel.getWmsGetFeatureInfoOptions().setMaxFeaturess(1);

        // determine the currently visible WMS layers
        final List<WMS> lLayers = this.getVisibleWmsLayers();

        mapPanel.getWmsGetFeatureInfoOptions().setLayers(lLayers.toArray(new WMS[lLayers.size()]));

        // create the WmsGetFeatureInfo
        mapPanel.setWmsGetFeatureInfo(new WMSGetFeatureInfo(mapPanel.getWmsGetFeatureInfoOptions()));
        mapPanel.getMap().addControl(mapPanel.getWmsGetFeatureInfo());
        mapPanel.getWmsGetFeatureInfo().activate();



        // Add get FeatureListener
        mapPanel.getWmsGetFeatureInfo().addGetFeatureListener(new GetFeatureInfoListener()
        {

如何在定义控件后更改WMSGetFeatureInfo的buildWMSOptions

1 个答案: