JAVA用geotools读取shape格式文件
摘星族 人气:0Shapefile属于一种矢量图形格式,它能够保存几何图形的位置及相关属性。但这种格式没法存储地理数据的拓扑信息。
其中,要组成一个Shapefile,有三个文件是必不可少的,它们分别是".shp", ".shx"与 ".dbf"文件
-
.shp— 图形格式,用于保存元素的几何实体。
-
.shx— 图形索引格式。几何体位置索引,记录每一个几何体在shp文件之中的位置,能够加快向前或向后搜索一个几何体的效率。
-
.dbf— 属性数据格式,以dBase IV的数据表格式存储每个几何形状的属性数据。
下面将介绍如何通过Java读取Shape文件中的内容信息
我们的pom文件
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.herbert.geotool</groupId> <artifactId>geo</artifactId> <version>1.0-SNAPSHOT</version> <dependencies> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-shapefile</artifactId> <version>19.2</version> <scope>system</scope> <https://img.qb5200.com/download-x/dependency> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-opengis</artifactId> <version>19.2</version> <https://img.qb5200.com/download-x/dependency> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-data</artifactId> <version>19.2</version> <https://img.qb5200.com/download-x/dependency> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-api</artifactId> <version>19.2</version> <https://img.qb5200.com/download-x/dependency> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-main</artifactId> <version>19.2</version> <https://img.qb5200.com/download-x/dependency> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-metadata</artifactId> <version>19.2</version> <https://img.qb5200.com/download-x/dependency> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-referencing</artifactId> <version>19.2</version> <https://img.qb5200.com/download-x/dependency> <dependency> <groupId>org.geotools</groupId> <artifactId>gt-geojson</artifactId> <version>19.2</version> <https://img.qb5200.com/download-x/dependency> <dependency> <groupId>org.json.simple</groupId> <artifactId>json-simple</artifactId> <version>1.1</version> <https://img.qb5200.com/download-x/dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-pool</artifactId> <version>1.5.4</version> <https://img.qb5200.com/download-x/dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang</artifactId> <version>2.6</version> <https://img.qb5200.com/download-x/dependency> <dependency> <groupId>com.vividsolutions</groupId> <artifactId>jts</artifactId> <version>1.13</version> <https://img.qb5200.com/download-x/dependency> <https://img.qb5200.com/download-x/dependencies> </project>
具体Java代码
package com.herbert.geotoool.util; import org.geotools.data.shapefile.ShapefileDataStore; import org.geotools.data.simple.SimpleFeatureIterator; import org.geotools.data.simple.SimpleFeatureSource; import org.geotools.geojson.feature.FeatureJSON; import org.opengis.feature.simple.SimpleFeature; import java.io.File; import java.io.IOException; import java.io.StringWriter; import java.nio.charset.Charset; /** * @author :Herbert * @date :Created in 2019/12/26 17:01 * @description: * @modified By: * @version: $ */ public class ShapeModel { public static void main(String[] args) throws IOException { long start = System.currentTimeMillis(); String SHAPE_FILE = "F:\\MapData\\gisMap\\xian\\街道界线.shp"; // ShapeFile全路径 // 使用GeoTools读取ShapeFile文件 File shapeFile = new File(SHAPE_FILE); ShapefileDataStore store = new ShapefileDataStore(shapeFile.toURI().toURL()); //设置编码 Charset charset = Charset.forName("GBK"); store.setCharset(charset); SimpleFeatureSource sfSource = store.getFeatureSource(); SimpleFeatureIterator sfIter = sfSource.getFeatures().features(); // 从ShapeFile文件中遍历每一个Feature,然后将Feature转为GeoJSON字符串 while (sfIter.hasNext()) { SimpleFeature feature = (SimpleFeature) sfIter.next(); // Feature转GeoJSON FeatureJSON fjson = new FeatureJSON(); StringWriter writer = new StringWriter(); fjson.writeFeature(feature, writer); String sjson = writer.toString(); System.out.println("sjson===== >>>> " + sjson); } System.out.println("数据导入完成,共耗时"+(System.currentTimeMillis() - start)+"ms"); } }
读取数据显示:
加载全部内容