Java shp 转 GeoJson

1. 依赖安装

1.1 配置软件源

在项目 pom.xml 添加,
maven 的 settings.xml 配置的源，mirrorOf 不能是 *,不然安装不上

<project>
	...
    <repositories>
        <repository>
            <id>osgeoid>
            <name>OSGeo Release Repositoryname>
            <url>https://repo.osgeo.org/repository/release/url>
            <snapshots><enabled>falseenabled>snapshots>
            <releases><enabled>trueenabled>releases>
        repository>
        <repository>
            <id>osgeo-snapshotid>
            <name>OSGeo Snapshot Repositoryname>
            <url>https://repo.osgeo.org/repository/snapshot/url>
            <snapshots><enabled>trueenabled>snapshots>
            <releases><enabled>falseenabled>releases>
        repository>
    repositories>
project>

1.2 引入依赖

geotools 29及以上的版本需要 jdk 11

<project>
...
	
    <properties>
	    ...
        <geotools.version>28.5geotools.version>
    properties>

	<dependencies>
		...
        <dependency>
            <groupId>org.geotoolsgroupId>
            <artifactId>gt-shapefileartifactId>
            <version>${geotools.version}version>
        dependency>
        <dependency>
            <groupId>org.geotoolsgroupId>
            <artifactId>gt-geojsonartifactId>
            <version>${geotools.version}version>
        dependency>
    dependencies>
project>

2. 功能实现

// 新版本 FeatureSource 的包路径有变化，根据IDE提示导入即可
import org.geotools.data.FeatureSource;
import org.geotools.data.shapefile.ShapefileDataStore;
import org.geotools.geojson.feature.FeatureJSON;

import java.io.File;
import java.io.IOException;
import java.io.StringWriter;
import java.nio.charset.Charset;

public class GeoTools {

    /**
     *
     * @param shpFile .shp 文件路径
     * @return
     * @throws IOException
     */
    public static String shpToJsonString(String shpFile) throws IOException {
        ShapefileDataStore dataStore = new ShapefileDataStore(new File(shpFile).toURI().toURL());
		
		// 处理中文乱码
        dataStore.setCharset(Charset.forName("GBK"));
        
        FeatureSource featureSource = dataStore.getFeatureSource();

        FeatureJSON featureJSON = new FeatureJSON();
        String result = null;
        try (StringWriter writer = new StringWriter()) {
            featureJSON.writeFeatureCollection(featureSource.getFeatures(), writer);
            result = writer.toString();
        }

        return result;
    }
}

3. 参考链接

• Re: [Geotools-gt2-users] Shapefile to GeoJson
• GeoTools读取shp文件中文乱码解决方案汇总