1

13693261870

2022-10-21 d0aa9a577e9641654a54dfc1a9fc974545d06611

 src/main/java/com/lf/server/helper/GdalHelper.java

@@ -1,5 +1,6 @@
package com.lf.server.helper;

import com.lf.server.entity.ctrl.ShpRecordEntity;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.gdal.gdal.Band;
@@ -41,6 +42,39 @@

        // 为了使属性表字段支持中文，请添加下面这句：CP936
        gdal.SetConfigOption("SHAPE_ENCODING", "");
    }

    /**
     * 获取Shp第一条记录的WKT
     */
    public static ShpRecordEntity readShpFirstRecord(String filePath) {
        try {
            org.gdal.ogr.Driver driver = ogr.GetDriverByName("ESRI shapefile");
            if (driver == null) {
                return null;
            }

            DataSource dataSource = driver.Open(filePath);
            Layer layer = dataSource.GetLayer(0);
            if (layer.GetFeatureCount() < 1) {
                return null;
            }

            SpatialReference spatialReference = layer.GetSpatialRef();
            String csid = spatialReference.GetAttrValue("AUTHORITY", 1);

            Feature feature = layer.GetFeature(0);
            String wkt = feature.GetGeometryRef().ExportToWkt();

            layer.delete();
            dataSource.delete();
            driver.delete();

            return new ShpRecordEntity(wkt, csid);
        } catch (Exception ex) {
            ex.printStackTrace();
            return null;
        }
    }

    /**
@@ -275,7 +309,7 @@
            return propertyGetter.get(feature, index);
        } catch (Exception ex) {
            // ex.printStackTrace()
            log.error(ex.getMessage() + ex.getStackTrace() + "\n");
            log.error(ex.getStackTrace());

            return null;
        }