JAVA调用GDAL处理shapefile文件中文属性值乱码解决方法

来源：互联网发布：淘宝新卖家如何推广编辑：程序博客网时间：2024/05/17 22:42

最近在JAVA上调用GDAL来对矢量数据进行操作，中文字段和中文属性值的乱码问题困扰已经，又要被老杜说没进展啦。。。苦不堪言啊！！！！好在经过这个早上的倒腾，终于给他怼出来了。在JAVA环境下怎么配置GDAL随手百度一发吧，我就不废话了。直接贴代码：

package shapefileProcess;import java.io.UnsupportedEncodingException;import org.gdal.gdal.gdal;import org.gdal.ogr.DataSource;import org.gdal.ogr.Feature;import org.gdal.ogr.FeatureDefn;import org.gdal.ogr.FieldDefn;import org.gdal.ogr.Layer;import org.gdal.ogr.ogr;import org.gdal.osr.SpatialReference;import org.gdal.osr.osr;public class ShapeReader {/** * @param args * @throws UnsupportedEncodingException  */public static void main(String[] args) throws UnsupportedEncodingException{// TODO Auto-generated method stubString hunanxsPath="E:\\硕士阶段\\项目\\实验数据\\临时测试\\hunanSX_WGS84.shp";String hunanxPath="E:\\硕士阶段\\项目\\实验数据\\洪涝相关\\湖南省.shp";ogr.RegisterAll(); //支持中文路径gdal.SetConfigOption("GDAL_FILENAME_IS_UTF8","YES"); //String nameString=gdal.GetConfigOption("SHAPE_ENCODING");//支持中文字段gdal.SetConfigOption("SHAPE_ENCODING","CP936"); DataSource hunanStream=readShapeFile(hunanxsPath);Layer hunanSreamLayer=hunanStream.GetLayerByIndex(0);DataSource hunanProvince=readShapeFile(hunanxPath);Layer hunanProvinceLayer=hunanProvince.GetLayer(0);DataSource tempDataSource=ogr.GetDriverByName("ESRI Shapefile").CreateDataSource("E:\\gjy\\Test",null);MyClipFeature(hunanSreamLayer, hunanProvinceLayer,tempDataSource);}private static DataSource readShapeFile(String path){ogr.RegisterAll();//支持中文路径gdal.SetConfigOption("GDAL_FILENAME_IS_UTF8","YES"); //String nameString=gdal.GetConfigOption("SHAPE_ENCODING");//支持中文字段gdal.SetConfigOption("SHAPE_ENCODING","CP936"); DataSource inputSource=ogr.Open(path);return inputSource;}private static void MyClipFeature(Layer inputLayer,Layer extentLayer,DataSource tempDataSource) throws UnsupportedEncodingException{ogr.RegisterAll();gdal.SetConfigOption("GDAL_FILENAME_IS_UTF8","YES"); gdal.SetConfigOption("SHAPE_ENCODING","CP936");for(int i=0;i<extentLayer.GetFeatureCount();i++){Feature iFeature=extentLayer.GetFeature(0);FieldDefn mFieldDefn=new FieldDefn("名称", ogr.OFTString);mFieldDefn.SetWidth(60);//extentLayer.CreateField(mFieldDefn, 1);Layer tempLayer=tempDataSource.CreateLayer("temp3",new SpatialReference(osr.SRS_WKT_WGS84));tempLayer.CreateField(mFieldDefn,1);FeatureDefn iFeatureDefn=extentLayer.GetLayerDefn();Feature mFeature=new Feature(iFeatureDefn);mFeature.SetField(0,iFeature.GetFieldAsString(0));System.out.print(iFeature.GetFieldAsString(0).getBytes().getClass().toString());//mFeature.SetField(1, iFeature.GetFieldAsString(1));mFeature.SetGeometry(iFeature.GetGeometryRef());               tempLayer.CreateFeature(mFeature);         tempLayer.SyncToDisk();//}}}

上面这段程度的功能主要是实现矢量的裁剪功能，具体是用左图对右图实现按县级行政区划的裁切，其中行政区划字段值为中文：

注意：gdal.SetConfigOption("SHAPE_ENCODING","CP936");

很多其他博客都没有显式指定SHAPE_ENCODING的值，直接为gdal.SetConfigOption("SHAPE_ENCODING",""); 理由是：操作系统的默认编码方式就是CP936（）

然而我经过调试发现/String nameString=gdal.GetConfigOption("SHAPE_ENCODING");返回值为null，并不是传说中的CP936，因此将它设为CP936解决中文乱码问题；

1 0