From 425f3bd6fbfc7e48e6c734fbae5ab38a55f20702 Mon Sep 17 00:00:00 2001
From: 13693261870 <252740454@qq.com>
Date: 星期一, 21 十一月 2022 21:20:59 +0800
Subject: [PATCH] 11
---
src/main/java/com/lf/server/helper/GdbHelper.java | 122 +++++++++++++++++++++++++++++++++++++++-
1 files changed, 118 insertions(+), 4 deletions(-)
diff --git a/src/main/java/com/lf/server/helper/GdbHelper.java b/src/main/java/com/lf/server/helper/GdbHelper.java
index 7d56898..91f476d 100644
--- a/src/main/java/com/lf/server/helper/GdbHelper.java
+++ b/src/main/java/com/lf/server/helper/GdbHelper.java
@@ -2,12 +2,13 @@
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.util.ArrayList;
+import java.util.HashMap;
import java.util.List;
+import java.util.Map;
/**
* GDB甯姪绫�
@@ -76,7 +77,23 @@
*/
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;
+ }
+
+ 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 {
@@ -85,4 +102,101 @@
}
}
}
+
+ /**
+ * 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 {
+ Field field = clazz.getDeclaredField(fieldDefn.GetName().toLowerCase());
+ 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 "java.math.BigDecimal":
+ case "java.lang.Double":
+ case "double":
+ field.set(t, f.GetFieldAsDouble(i));
+ break;
+ case "java.lang.Long":
+ case "long":
+ field.set(t, f.GetFieldAsInteger64(i));
+ break;
+ case "java.lang.Integer":
+ case "int":
+ field.set(t, f.GetFieldAsInteger(i));
+ break;
+ case "java.sql.Timestamp":
+ field.set(t, GdalHelper.getProperty(f, i));
+ break;
+ default:
+ field.set(t, f.GetFieldAsString(i));
+ break;
+ }
+ }
+
+ /**
+ * 璁剧疆 geom 瀛楁鍊�
+ */
+ private static <T> void setGeom(T t, Feature f, Field gField) throws Exception {
+ Geometry geometry = f.GetGeometryRef();
+ if (null != geometry) {
+ gField.set(t, geometry.ExportToWkt());
+ }
+ }
}
--
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