功能部件具有一种
getDefaultGeometry可以为您提供所需要点的方法。然后，您可以从该点获取坐标。
编辑
您的问题是单位不匹配，您
MinDist将边界框的宽度设置为度（以度为单位，大约为360），但将其与以米为单位的距离（大约为7800000）进行比较，因此您找不到一个足以保存的点。
我开始通过限制初始搜索范围来提高搜索效率，但是即使使用了我无法确定是否有效的填充位置数据集，它也足够快。
final double MAX_SEARCH_DISTANCE = Math.max(index.getBounds().getWidth(), index.getBounds().getHeight()); double searchDist = 0.01; while (searchDist < MAX_SEARCH_DISTANCE) { // start point (user input) Coordinate coordinate = p.getCoordinate(); ReferencedEnvelope search = new ReferencedEnvelope(new Envelope(coordinate), index.getSchema().getCoordinateReferenceSystem()); search.expandBy(searchDist); BBOX bbox = ff.bbox(ff.property(index.getSchema().getGeometryDescriptor().getName()), (BoundingBox) search); SimpleFeatureCollection candidates = index.subCollection(bbox); double minDist = Double.POSITIVE_INFINITY; // can't use // MAX_Search_dist here // as it is degrees and // dists are meters Coordinate minDistPoint = null; double dist = 0; Point dest = null; SimpleFeatureIterator itr = candidates.features(); CoordinateReferenceSystem crs = DefaultGeographicCRS.WGS84; try { SimpleFeature feature = null; while (itr.hasNext()) { feature = itr.next(); // destination point dest = (Point) feature.getDefaultGeometry(); GeodeticCalculator gc = new GeodeticCalculator(crs); gc.setStartingPosition(JTS.toDirectPosition(p.getCoordinate(), crs)); gc.setDestinationPosition(JTS.toDirectPosition(dest.getCoordinate(), crs)); // Calculate distance between points dist = gc.getOrthodromicDistance(); // System.out.println(feature.getID()+": "+dist); if (dist < minDist) { minDist = dist; minDistPoint = dest.getCoordinate(); lastMatched = feature; } } } finally { itr.close(); } Point ret = null; if (minDistPoint == null) { searchDist *= 2.0; System.out.println("repeat search"); } else { ret = gf.createPoint(minDistPoint); return ret; } } return gf.createPoint(new Coordinate());}
