使用gdal读取dwg

GDAL does not have native support for reading DWG files, as it is a proprietary binary file format used by AutoCAD and other CAD software. However, you can use the Teigha File Converter to convert DWG files to DXF format, which is a supported format by GDAL.

Here's an example of how to use GDAL to read a DXF file converted from a DWG file:

import org.gdal.gdal.gdal;
import org.gdal.ogr.DataSource;
import org.gdal.ogr.Layer;

public class ReadDXF {
    public static void main(String[] args) {
        // Register GDAL drivers
        gdal.AllRegister();

        // Open DXF file
        String dxfFile = "path/to/dxf/file.dxf";
        DataSource ds = ogr.Open(dxfFile, false);

        // Get layer by name
        String layerName = "layer_name";
        Layer layer = ds.GetLayerByName(layerName);

        // Read features
        layer.ResetReading();
        while (layer.GetNextFeature() != null) {
            // Do something with feature
        }

        // Close DXF file
        ds.delete();
    }
}

Note that you'll need to include the GDAL and Java GDAL libraries in your project's dependencies in order to use them. You'll also need to install the Teigha File Converter on your system and convert the DWG file to DXF format before reading it with GDAL.