gwt-openlayers在PostGIS中保存修改过的对象

Question

我是使用gwt-openlayer的新手。我尝试在PostGIS DB中修改几何图形。我可以在UI中修改它，但我不能保存修改后的几何图形。下面是我要编辑和保存的代码：

private void saveFeature(WFSProtocol wfsProtocol, Vector wfsLayer, SaveStrategy saveStrategy) {
    Callback callbackSave = new Callback()
    {
        public void computeResponse(Response response)
        {
            System.out.println("Saved: " + response.getRequestType());
         }
     };
     saveStrategy.save();
     WFSProtocolCRUDOptions saveOptions = new WFSProtocolCRUDOptions(callbackSave);
     wfsProtocol.commit(wfsLayer.getFeatures(), saveOptions);

}
private void editableLayer(Vector wfsLayer, Map map, VectorOptions vectorOptions, SaveStrategy saveStrategy) {
    //Create some styles for the wfs
    final Style normalStyle = new Style(); //the normal style
    normalStyle.setStrokeWidth(3);
    normalStyle.setStrokeColor("#FF0000");
    normalStyle.setFillColor("#FFFF00");
    normalStyle.setFillOpacity(0.8);
    normalStyle.setStrokeOpacity(0.8);
    final Style selectedStyle = new Style(); //the style when a feature is selected, or temporaly selected
    selectedStyle.setStrokeWidth(3);
    selectedStyle.setStrokeColor("#FFFF00");
    selectedStyle.setFillColor("#FF0000");
    selectedStyle.setFillOpacity(0.8);
    selectedStyle.setStrokeOpacity(0.8);
    final StyleMap styleMap = new StyleMap(normalStyle, selectedStyle,
                                           selectedStyle);
    wfsLayer.setStyleMap(styleMap);

    //Create a ModifyFeature control that enables WFS modification
    final ModifyFeatureOptions modifyFeatureControlOptions = new ModifyFeatureOptions();
    modifyFeatureControlOptions.setMode(ModifyFeature.RESHAPE); //options are RESHAPE, RESIZE, ROTATE and DRAG
    final ModifyFeature modifyFeatureControl = new ModifyFeature(wfsLayer,
                                                                 modifyFeatureControlOptions);

    map.addControl(modifyFeatureControl);
    modifyFeatureControl.activate();
    saveStrategy.activate();
}

Answer 1

解决了！问题是连接到几何图形名称。在postgis中，默认名称是" the -geom"，在我的例子中是"geom“。我忘了在WfsProtocolOptions中指定它: wfsProtocolOptions.setGeometryName("geom")；

现在一切都正常了！