From 2d2d9138fbe5c9c43f070be59a2d10f18fbf4c3b Mon Sep 17 00:00:00 2001
From: 13693261870 <252740454@qq.com>
Date: 星期三, 23 十一月 2022 09:05:06 +0800
Subject: [PATCH] 1
---
src/main/java/com/lf/server/helper/GdbHelper.java | 241 +++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 235 insertions(+), 6 deletions(-)
diff --git a/src/main/java/com/lf/server/helper/GdbHelper.java b/src/main/java/com/lf/server/helper/GdbHelper.java
index 71a7760..48d1d14 100644
--- a/src/main/java/com/lf/server/helper/GdbHelper.java
+++ b/src/main/java/com/lf/server/helper/GdbHelper.java
@@ -2,12 +2,17 @@
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
-import org.gdal.ogr.DataSource;
-import org.gdal.ogr.Layer;
-import org.gdal.ogr.ogr;
+import org.gdal.ogr.*;
+import java.lang.reflect.Field;
+import java.sql.Timestamp;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
import java.util.ArrayList;
+import java.util.HashMap;
import java.util.List;
+import java.util.Map;
/**
* GDB甯姪绫�
@@ -16,6 +21,13 @@
public class GdbHelper {
private final static Log log = LogFactory.getLog(GdbHelper.class);
+ public static List<String> excludeFields = new ArrayList<String>();
+
+ static {
+ excludeFields.add("gid");
+ excludeFields.add("shape_leng");
+ }
+
/**
* 鑾峰彇琛ㄥ悕
*/
@@ -23,16 +35,24 @@
List<String> list = new ArrayList<>();
try {
org.gdal.ogr.Driver driver = ogr.GetDriverByName("OpenFileGDB");
- if (driver == null) {
+ if (null == driver) {
return list;
}
DataSource dataSource = driver.Open(filePath, 0);
+ if (null == dataSource) {
+ return list;
+ }
+
for (int i = 0, count = dataSource.GetLayerCount(); i < count; i++) {
Layer layer = dataSource.GetLayer(i);
-
list.add(layer.GetName());
+
+ layer.delete();
}
+
+ dataSource.delete();
+ driver.delete();
} catch (Exception ex) {
log.error(ex.getMessage(), ex);
}
@@ -43,14 +63,223 @@
/**
* 璇诲彇鏁版嵁
*/
- public static <T> List<T> readData(Class clazz, String filePath) {
+ public static <T> List<T> readData(Class clazz, String filePath, String layerName) {
List<T> list = new ArrayList<>();
try {
+ org.gdal.ogr.Driver driver = ogr.GetDriverByName("OpenFileGDB");
+ if (null == driver) {
+ return list;
+ }
+ DataSource dataSource = driver.Open(filePath, 0);
+ if (null == dataSource) {
+ return list;
+ }
+
+ for (int i = 0, count = dataSource.GetLayerCount(); i < count; i++) {
+ Layer layer = dataSource.GetLayer(i);
+
+ if (layer.GetName().equals(layerName)) {
+ GdbHelper.readLayer(clazz, layer, list);
+ break;
+ }
+
+ layer.delete();
+ }
+
+ dataSource.delete();
+ driver.delete();
} catch (Exception ex) {
log.error(ex.getMessage(), ex);
}
return list;
}
+
+ /**
+ * 璇诲彇鍥惧眰
+ */
+ public static <T> void readLayer(Class clazz, Layer layer, List<T> list) {
+ try {
+ Field gField = getGeomField(clazz);
+ Map<Integer, Field> map = getFieldMapper(clazz, layer);
+ if (map.size() == 0) {
+ return;
+ }
+ if (1 > layer.GetFeatureCount()) {
+ return;
+ }
+
+ do {
+ Feature f = layer.GetNextFeature();
+ if (null == f) {
+ break;
+ }
+
+ T t = (T) clazz.newInstance();
+ if (readFeature(t, f, map, gField)) {
+ list.add(t);
+ }
+ } while (true);
+ } catch (Exception ex) {
+ log.error(ex.getMessage(), ex);
+ } finally {
+ if (null != layer) {
+ layer.delete();
+ }
+ }
+ }
+
+ /**
+ * 鑾峰彇 geom 瀛楁
+ */
+ private static Field getGeomField(Class clazz) {
+ try {
+ Field gField = clazz.getDeclaredField("geom");
+ gField.setAccessible(true);
+
+ return gField;
+ } catch (Exception ex) {
+ return null;
+ }
+ }
+
+ /**
+ * 鑾峰彇瀛楁鏄犲皠
+ */
+ private static <T> Map<Integer, Field> getFieldMapper(Class clazz, Layer layer) {
+ Map<Integer, Field> map = new HashMap<>(3);
+
+ try {
+ FeatureDefn fd = layer.GetLayerDefn();
+ for (int i = 0, count = fd.GetFieldCount(); i < count; i++) {
+ FieldDefn fieldDefn = fd.GetFieldDefn(i);
+ try {
+ String name = fieldDefn.GetName().toLowerCase();
+ if (excludeFields.contains(name)){
+ continue;
+ }
+
+ Field field = clazz.getDeclaredField(name);
+ field.setAccessible(true);
+
+ map.put(i, field);
+ } catch (Exception e) {
+ //
+ }
+ }
+ } catch (Exception ex) {
+ //
+ }
+
+ return map;
+ }
+
+ /**
+ * 璇诲彇Feature
+ */
+ private static <T> boolean readFeature(T t, Feature f, Map<Integer, Field> map, Field gField) {
+ try {
+ for (Integer i : map.keySet()) {
+ Field field = map.get(i);
+ setValue(t, f, field, i);
+ }
+
+ if (null != gField) {
+ setGeom(t, f, gField);
+ }
+
+ return true;
+ } catch (Exception ex) {
+ return false;
+ }
+ }
+
+ /**
+ * 璁剧疆鍊�
+ */
+ private static <T> void setValue(T t, Feature f, Field field, Integer i) throws Exception {
+ switch (field.getType().toString()) {
+ case "class java.math.BigDecimal":
+ case "class java.lang.Double":
+ case "double":
+ field.set(t, f.GetFieldAsDouble(i));
+ break;
+ case "class java.lang.Long":
+ case "long":
+ field.set(t, f.GetFieldAsInteger64(i));
+ break;
+ case "class java.lang.Integer":
+ case "int":
+ field.set(t, f.GetFieldAsInteger(i));
+ break;
+ case "class java.sql.Timestamp":
+ field.set(t, getTimestamp(f, i));
+ break;
+ default:
+ field.set(t, f.GetFieldAsString(i));
+ break;
+ }
+ }
+
+ /**
+ * 璁剧疆 geom 瀛楁鍊�
+ * <p>
+ * wkbUnknown = 0,
+ * wkbPoint = 1,
+ * wkbLineString = 2,
+ * wkbPolygon = 3,
+ * wkbMultiPoint = 4,
+ * wkbMultiLineString = 5,
+ * wkbMultiPolygon = 6,
+ * wkbGeometryCollection = 7,
+ * wkbNone = 100,
+ * wkbLinearRing = 101
+ */
+ private static <T> void setGeom(T t, Feature f, Field gField) throws Exception {
+ Geometry geometry = f.GetGeometryRef();
+ if (null != geometry) {
+ String wkt = geometry.ExportToWkt();
+ switch (geometry.GetGeometryType()) {
+ case 2:
+ wkt = wkt.replace("LINESTRING (", "MULTILINESTRING ((") + ")";
+ break;
+ case 3:
+ wkt = wkt.replace("POLYGON (", "MULTIPOLYGON ((") + ")";
+ break;
+ default:
+ break;
+ }
+
+ gField.set(t, String.format("ST_GeomFromText('%s')", wkt));
+ }
+ }
+
+ /**
+ * 鑾峰彇 Timestamp
+ */
+ private static Timestamp getTimestamp(Feature f, int index) {
+ int[] pnYear = new int[1];
+ int[] pnMonth = new int[1];
+ int[] pnDay = new int[1];
+ int[] pnHour = new int[1];
+ int[] pnMinute = new int[1];
+ float[] pfSecond = new float[1];
+ int[] pnTzFlag = new int[1];
+
+ f.GetFieldAsDateTime(index, pnYear, pnMonth, pnDay, pnHour, pnMinute, pfSecond, pnTzFlag);
+
+ float fSecond = pfSecond[0];
+ int s = (int) fSecond;
+ int ns = (int) (1000000000 * fSecond - s);
+
+ LocalDateTime localDateTime = LocalDateTime.of(
+ LocalDate.of(pnYear[0], pnMonth[0], pnDay[0]),
+ LocalTime.of(pnHour[0], pnMinute[0], s, ns)
+ );
+
+ Timestamp timestamp = Timestamp.valueOf(localDateTime);
+
+ return timestamp;
+ }
}
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