基于geotools24.0版本读取tif文件范围和坐标系统srs的功能

File file=null;
        GeoTiffReader reader=null;
        GridCoverage2D coverage=null;
        try {
    
    
            file = new File(filePath);
            reader = new GeoTiffReader(file, new Hints(Hints.FORCE_LONGITUDE_FIRST_AXIS_ORDER, Boolean.TRUE));
            coverage = reader.read(null);
            Envelope2D env = coverage.getEnvelope2D();
            extent.add(BigDecimal.valueOf(env.getBounds().getMinX()));
            extent.add(BigDecimal.valueOf(env.getBounds().getMinY()));
            extent.add(BigDecimal.valueOf(env.getBounds().getMaxX()));
            extent.add(BigDecimal.valueOf(env.getBounds().getMaxY()));
            //
            res.setExtent(extent);
            CoordinateSystem cs=reader.getCoordinateReferenceSystem().getCoordinateSystem();
            if(cs!=null) {
    
    
                if(cs.getIdentifiers().size()>0) {
    
    
                    Iterator<ReferenceIdentifier> item=cs.getIdentifiers().iterator();
                    while(item.hasNext()){
    
    
                        NamedIdentifier ref=(NamedIdentifier)item.next();
                        if(ref!=null) {
    
    
                            res.setSrs(ref.toString());
                        }
                    }
                }
            }
        }
        catch (Exception ee)
        {
    
    
        }
        finally {
    
    
            if(coverage!=null)
            {
    
    
                coverage.dispose(true);
                coverage=null;
            }
            if(reader!=null)
            {
    
    
                reader.dispose();
                reader=null;
            }
            if(file!=null)
            {
    
    
                file=null;
            }
        }