吉安感知网项目-后端
linwei
2026-01-17 4c140a47f9a798832b71a8913a84e8045211b3f7
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package org.sxkj.common.utils;
 
import org.apache.commons.lang3.StringUtils;
import org.geotools.geometry.jts.JTSFactoryFinder;
import org.locationtech.jts.geom.Geometry;
import org.locationtech.jts.geom.GeometryFactory;
import org.locationtech.jts.io.ParseException;
import org.locationtech.jts.io.WKTReader;
 
public class GeomUtils {
 
    private static final GeometryFactory geometryFactory = JTSFactoryFinder.getGeometryFactory();
    private static final WKTReader wktReader = new WKTReader(geometryFactory);
 
    public static boolean isGeomInvalid(String geom) {
        if (StringUtils.isBlank(geom)) {
            return false;
        }
        String upper = geom.trim().toUpperCase();
        return !upper.contains("POLYGON");
    }
 
    /**
     * 验证并转换几何数据,确保其有效
     * @param geom WKT格式的几何数据
     * @return 有效的几何数据,或null如果转换失败
     */
    public static String validateAndFormatGeom(String geom) {
        if (StringUtils.isBlank(geom)) {
            return null;
        }
 
        try {
            // 解析WKT字符串
            Geometry geometry = wktReader.read(geom);
 
            // 如果几何数据无效,尝试修复
            if (!geometry.isValid()) {
                geometry = geometry.buffer(0);
            }
 
            // 确保几何数据有效
            if (geometry.isValid()) {
                return geometry.toText();
            } else {
                return null;
            }
        } catch (ParseException e) {
            // 解析失败
            return null;
        }
    }
}