1

13693261870

2022-10-31 ae3ca6829a5bae6088b6f6a005377f11fee03df8

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

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

import com.lf.server.entity.ctrl.MarkJsonEntity;
import com.lf.server.entity.ctrl.ShpRecordEntity;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
@@ -11,6 +12,7 @@
import org.gdal.ogr.*;
import org.gdal.osr.SpatialReference;

import java.io.File;
import java.sql.Time;
import java.sql.Timestamp;
import java.time.LocalDate;
@@ -72,8 +74,81 @@

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

    /**
     * 创建ShapeFile文件
     *
     * @param list 标绘JSON实体类集合
     * @param path 路径
     * @param type 类型：POINT,LINESTRING,POLYGON
     * @return ShapeFile文件名
     */
    public static String createShp(List<MarkJsonEntity> list, String path, String type) {
        try {
            org.gdal.ogr.Driver driver = ogr.GetDriverByName("ESRI shapefile");
            if (driver == null) {
                return null;
            }

            String filePath = path + File.separator + type.toLowerCase() + ".shp";
            //DataSource ds = driver.Open(filePath, 0);
            DataSource ds = driver.CreateDataSource(filePath, null);

            SpatialReference sr = new SpatialReference();
            sr.ImportFromEPSG(4326);

            int geoType = getGeometryType(type);
            Layer layer = ds.CreateLayer(type.toLowerCase(), sr, geoType);

            FieldDefn fdName = new FieldDefn("name", ogr.OFTString);
            fdName.SetWidth(50);
            layer.CreateField(fdName, 0);

            FieldDefn fdProps = new FieldDefn("props", ogr.OFTString);
            fdProps.SetWidth(1024);
            // layer.DeleteField(layer.FindFieldIndex("name", 1));
            layer.CreateField(fdProps, 1);

            FeatureDefn featureDefn = layer.GetLayerDefn();
            for (MarkJsonEntity mje : list) {
                Geometry geo = Geometry.CreateFromWkt(mje.getWkt());

                Feature f = new Feature(featureDefn);
                f.SetField(0, mje.getName());
                f.SetField(1, mje.getProps());
                f.SetGeometry(geo);

                layer.CreateFeature(f);
            }

            layer.delete();
            ds.delete();
            driver.delete();

            return filePath;
        } catch (Exception ex) {
            log.error(ex.getMessage(), ex);
            return null;
        }
    }

    /**
     * 获取图形类型
     */
    private static int getGeometryType(String type) {
        switch (type) {
            case "POINT":
                return 1;
            case "LINESTRING":
                return 2;
            case "POLYGON":
                return 3;
            default:
                return -1;
        }
    }

@@ -111,29 +186,9 @@
        gdal.GDALDestroyDriverManager();
    }

    private static void writeShp(String filePath) {
        try {
            org.gdal.ogr.Driver driver = ogr.GetDriverByName("ESRI shapefile");
            if (driver == null) {
                System.out.println(" ESRI shapefile驱动不可用！\n");
                System.out.println("fail");
            }

            // Open()的第二个参数默认为0，是以只读方式打开文件；1是读写方式打开
            DataSource dSource = driver.Open(filePath, 0);

            Layer layer = dSource.GetLayerByIndex(0);
            FieldDefn fieldDefn = new FieldDefn("name", ogr.OFTString);
            fieldDefn.SetWidth(50);
            layer.CreateField(fieldDefn, 1);
            layer.DeleteField(layer.FindFieldIndex("name", 1));
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    /**
     * 读取shp文件
     *
     * @param filePath
     */
    public static void readShp(String filePath) {
@@ -257,6 +312,7 @@

    /**
     * 读取gdb文件
     *
     * @param filePath
     */
    public static void readGdb(String filePath) {