Java集成gdal 处理解析tiff和shp数据

1. 配置 gdal

1.1. 官网下载

这个是因为你电脑是 win64 位才选择哦～

下载这个，然后解压

1.2. 复制这个压缩包下的 ddl 文件

可以按照类型复制，然后复制到你的 java jDK 文件夹下

1.3. 找到你的 java jdk 文件夹

不知道 java 的文件夹位置，可以通过这个查找

1.4. 复制对象

将这个复制到这个1.5. 选择 release-1930-x64-gdal-3-8-5-mapserver-8-0-1\bin\gdal\java

也复制到 java/bin java/jre/java，并且放入项目里面

2. 解析 tif

package org.example.flink_springboot.geop;import org.gdal.gdal.Band;
import org.gdal.gdal.Dataset;
import org.gdal.gdal.Driver;
import org.gdal.gdal.gdal;
import org.gdal.gdalconst.gdalconst;
import org.gdal.gdalconst.gdalconstConstants;public class GDALTest {public static void main(String[] args) {// 注册文件格式gdal.AllRegister();// 使用只读的方式打开图像Dataset poDataset = gdal.Open("F:\\learn\\flink_springboot\\src\\main\\resources\\srtm_60_05.tif", gdalconst.GA_ReadOnly);if (poDataset == null) {System.out.println("The image could not be read.");} else {// 图像打开成功System.out.println("The image could be read.");Driver hDriver = poDataset.GetDriver();// 输出文件的格式System.out.println("文件格式：" + hDriver.GetDescription());//System.out.println("文件格式：" + hDriver.getShortName() + "/" + hDriver.getLongName());// 输出图像的大小和波段个数System.out.println("size is:x:" + poDataset.getRasterXSize() + " ,y:" + poDataset.getRasterYSize()+ " ,band size:" + poDataset.getRasterCount());// 输出图像的投影信息if (poDataset.GetProjectionRef() != null) {System.out.println("Projection is " + poDataset.GetProjectionRef());}// 输出图像的坐标和分辨率信息double[] adfGeoTransform = new double[6];poDataset.GetGeoTransform(adfGeoTransform);System.out.println("origin : " + adfGeoTransform[0] + "," + adfGeoTransform[3]);System.out.println("pixel size:" + adfGeoTransform[1] + "," + adfGeoTransform[5]);// 分别输出各个波段的块大小，并获取该波段的最大值和最小值,颜色表信息for (int band = 0; band < poDataset.getRasterCount(); band++) {Band poBand = poDataset.GetRasterBand(band + 1);System.out.println("Band" + (band + 1) + ":" + "size:x:" + poBand.getXSize() + ",y:" + poBand.getYSize());Double[] min = new Double[1];Double[] max = new Double[1];poBand.GetMinimum(min);poBand.GetMaximum(max);if (min[0] != null || max[0] != null) {System.out.println("Min=" + min[0] + ",max=" + max[0]);} else {System.out.println("No Min/Max values stored in raster.");}if (poBand.GetColorTable() != null) {System.out.println("band" + band + "has a color table with"+ poBand.GetRasterColorTable().GetCount() + "entries.");}int buf[] = new int[poDataset.getRasterXSize()];for (int i = 0; i < 3; i++) {poBand.ReadRaster(0, i, poDataset.getRasterXSize(), 1, buf);for (int j = 0; j < 3; j++)System.out.print(buf[j] + ", ");System.out.println("\n");}}poDataset.delete();}}
}

3. 解析 shp

package org.example.flink_springboot.shape;import org.gdal.gdal.gdal;
import org.gdal.ogr.*;
import org.gdal.osr.SpatialReference;import java.util.HashMap;
import java.util.Map;public class GdalDemo_shp1 {public void opeanShp(String strVectorFile ) {// 注册所有的驱动ogr.RegisterAll();
// 为了支持中文路径，请添加下面这句代码gdal.SetConfigOption("GDAL_FILENAME_IS_UTF8", "YES");
// 为了使属性表字段支持中文，请添加下面这句gdal.SetConfigOption("SHAPE_ENCODING", "CP936");
// 读取数据，这里以ESRI的shp文件为例String strDriverName = "ESRI Shapefile";
// 创建一个文件，根据strDriverName扩展名自动判断驱动类型org.gdal.ogr.Driver oDriver = ogr.GetDriverByName(strDriverName);if (oDriver == null) {System.out.println(strDriverName + " 驱动不可用！\n");return;}DataSource dataSource = oDriver.Open(strVectorFile);//Layer layer = dataSource.GetLayer("test");Layer layer = dataSource.GetLayer(0);for(int i = 0;i<dataSource.GetLayerCount();i++) {Layer layerIdx = dataSource.GetLayer(i);System.out.println("图层名称：<==>" + layerIdx.GetName());}String layerName = layer.GetName();System.out.println("图层名称：" + layerName);SpatialReference spatialReference = layer.GetSpatialRef();
//System.out.println(spatialReference);System.out.println("空间参考坐标系：" + spatialReference.GetAttrValue("AUTHORITY", 0)+ spatialReference.GetAttrValue("AUTHORITY", 1));double[] layerExtent = layer.GetExtent();System.out.println("图层范围：minx:" + layerExtent[0] + ",maxx:" + layerExtent[1] + ",miny:" + layerExtent[2] + ",maxy:" + layerExtent[3]);FeatureDefn featureDefn = layer.GetLayerDefn();int fieldCount = featureDefn.GetFieldCount();Map<String,String> fieldMap = new HashMap<String,String>();for (int i = 0; i < fieldCount; i++) {FieldDefn fieldDefn = featureDefn.GetFieldDefn(i);// 得到属性字段类型int fieldType = fieldDefn.GetFieldType();String fieldTypeName = fieldDefn.GetFieldTypeName(fieldType);// 得到属性字段名称String fieldName = fieldDefn.GetName();fieldMap.put(fieldTypeName, fieldName);}System.out.println();System.out.println("fileMap:");System.out.println(fieldMap);System.out.println(layer.GetFeature(1).GetGeometryRef().ExportToJson());System.out.println(layer.GetFeature(2).GetGeometryRef().ExportToJson());System.out.println(layer.GetFeature(3).GetGeometryRef().ExportToJson());for (int i = 0; i < 12; i++) {Feature feature = layer.GetFeature(i);Object[] arr = fieldMap.values().toArray();for (int k = 0; k < arr.length; k++) {String fvalue = feature.GetFieldAsString(arr[k].toString());System.out.println(" 属性名称:" + arr[k].toString() + ",属性值:" + fvalue);}}}public static void main(String[] args) {GdalDemo_shp shp = new  GdalDemo_shp();String strVectorFile ="F:\\learn\\flink_springboot\\src\\main\\resources\\中华人民共和国.shp";String info = shp.opeanShp(strVectorFile);System.out.println(info);}
}

package org.example.flink_springboot.shape;import java.io.File;
import java.io.IOException;
import java.io.Serializable;
import java.util.Map;public class SHP {/*** 生成shape文件** @param shpPath  生成shape文件路径（包含文件名称） filepath* @param encode   编码 code* @param geoType  图幅类型，Point和Rolygon* @param shpKey   data中图幅的key  geomfiled* @param attrKeys 属性key集合 keylist* @param data     图幅和属性集合 datalist*/public  void write2Shape(String shpPath, String encode, String geoType, String shpKey, List<ShpFiled> attrKeys, List<Map<String, Object>> data) {WKTReader reader = new WKTReader();try {//创建shape文件对象File file = new File(shpPath);Map<String, Serializable> params = new HashMap<>();params.put(ShapefileDataStoreFactory.URLP.key, file.toURI().toURL());ShapefileDataStore ds = (ShapefileDataStore) new ShapefileDataStoreFactory().createNewDataStore(params);//定义图形信息和属性信息SimpleFeatureTypeBuilder tb = new SimpleFeatureTypeBuilder();tb.setCRS(DefaultGeographicCRS.WGS84);tb.setName("sx_test");tb.add("the_geom", getClass(geoType));for (ShpFiled field : attrKeys) {tb.add(field.getFiledname().toUpperCase(), getClass(field.getType()));}ds.createSchema(tb.buildFeatureType());//设置编码Charset charset = Charset.forName(encode);ds.setCharset(charset);//设置WriterFeatureWriter<SimpleFeatureType, SimpleFeature> writer = ds.getFeatureWriter(ds.getTypeNames()[0], Transaction.AUTO_COMMIT);//    写入文件信息for (int i = 0; i < data.size(); i++) {SimpleFeature feature = writer.next();Map<String, Object> row = data.get(i);Geometry geom = reader.read(row.get(shpKey).toString());feature.setAttribute("the_geom", geom);for (ShpFiled field : attrKeys) {if (row.get(field.getFiledname()) != null) {feature.setAttribute(field.getFiledname().toUpperCase(), row.get(field.getFiledname()));} else {feature.setAttribute(field.getFiledname().toUpperCase(), null);}}}writer.write();writer.close();ds.dispose();//添加到压缩文件//zipShapeFile(shpPath);} catch (IOException e) {e.printStackTrace();}catch (Exception e) {e.printStackTrace();}}/*** 更新shp文件数据** @param path 文件路径* @param datalist 空间及属性数据*/public static void updateFeature(String path, List<Map<String, Object>> datalist,String code) {ShapefileDataStore dataStore = null;File file = new File(path);Transaction transaction = new DefaultTransaction("handle");try {dataStore = new ShapefileDataStore(file.toURL());Charset charset = Charset.forName(code);dataStore.setCharset(charset);String typeName = dataStore.getTypeNames()[0];SimpleFeatureStore store = (SimpleFeatureStore) dataStore.getFeatureSource(typeName);// 获取字段列表SimpleFeatureType featureType = store.getSchema();List<String> fileds = getFileds(featureType);store.setTransaction(transaction);WKTReader reader = new WKTReader();for (Map<String, Object> data : datalist) {Filter filter = null;if (data.get("where") != null) {filter = ECQL.toFilter(data.get("where").toString());}Object[] objs = new Object[] {};String[] str = new String[] {};if (data.get("geom") != null) {Geometry geometry = reader.read(data.get("geom").toString());str = add(str, "the_geom");objs = add(objs, geometry);}for (String stri : fileds) {if (data.get(stri) != null) {str = add(str, stri);objs = add(objs, data.get(stri));}}store.modifyFeatures(str, objs, filter);}transaction.commit();System.out.println("========updateFeature====end====");} catch (Exception eek) {eek.printStackTrace();try {transaction.rollback();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}/*** 移除shp中的数据* @param path 文件路径* @param ids 字段值数组* @param filed 字段名*/public static void removeFeature(String path, List<String>ids,String filed,String code){ShapefileDataStore dataStore = null;File file = new File(path);Transaction transaction = new DefaultTransaction("handle");try {dataStore = new ShapefileDataStore(file.toURL());Charset charset = Charset.forName(code);dataStore.setCharset(charset);String typeName = dataStore.getTypeNames()[0];SimpleFeatureStore store = (SimpleFeatureStore) dataStore.getFeatureSource(typeName);store.setTransaction(transaction);Filter filter = null;if(ids.size()>0) {String join = filed +" in ("+StringUtils.join(ids,",")+")";System.out.println(join);filter = ECQL.toFilter(join);}if(filter!=null) {store.removeFeatures(filter);transaction.commit();System.out.println("======removeFeature== done ========");}} catch (Exception eek) {eek.printStackTrace();try {transaction.rollback();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}