wkt转换geojson

应用配置

<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.lilei.geojson</groupId>
	<artifactId>wkt2geojson</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>wkt2geojson</name>
	<url>http://maven.apache.org</url>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
	</properties>

	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>3.8.1</version>
			<scope>test</scope>
		</dependency>

		<!-- https://mvnrepository.com/artifact/org.geotools/gt-geojson -->
		<dependency>
			<groupId>org.geotools</groupId>
			<artifactId>gt-geojson</artifactId>
			<version>12.0</version>
		</dependency>

	</dependencies>

	<repositories>
		<repository>
			<id>nexus2</id>
			<name>internal nexus repository2</name>
			<url>http://central.maven.org/maven2/</url>
		</repository>

		<repository>
			<id>maven2-repository.dev.java.net</id>
			<name>Java.net repository</name>
			<url>http://download.java.net/maven/2</url>
		</repository>
		<repository>
			<id>osgeo</id>
			<name>Open Source Geospatial Foundation Repository</name>
			<url>http://download.osgeo.org/webdav/geotools/</url>
		</repository>
		<repository>
			<snapshots>
				<enabled>true</enabled>
			</snapshots>
			<id>boundless</id>
			<name>Boundless Maven Repository</name>
			<url>http://repo.boundlessgeo.com/main</url>
		</repository>

	</repositories>

</project>

　　

程序

package com.lilei.geojson.wkt2geojson;

import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.Map;

import org.geotools.geojson.geom.GeometryJSON;
import org.json.simple.JSONObject;

import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.io.WKTReader;

/**
 * Hello world!
 *
 */
public class App {
	public static void main(String[] args) {

		String wkt = "POINT(114.298456 30.553544)";

		Map<String,Object> map = new HashMap<String,Object>();

		map.put("name", "北清路");

		map.put("author","李雷");

		String json = geoToJson(wkt,map);

		System.out.println(jsonToWkt(json));

	}

	//
	public static String geoToJson(String wkt,Map<String,Object> map) {
		String json = null;
		try {
			WKTReader reader = new WKTReader();
			Geometry geometry = reader.read(wkt);
			StringWriter writer = new StringWriter();
			GeometryJSON g = new GeometryJSON();
			g.write(geometry, writer);

			map.put("geometry", writer);

			json = JSONObject.toJSONString(map);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return json;
	}

	public static String jsonToWkt(String geoJson) {
		String wkt = null;
		GeometryJSON gjson = new GeometryJSON();
		Reader reader = new StringReader(geoJson);
		try {
			Geometry geometry = gjson.read(reader);

			wkt = geometry.toText();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return wkt;
	}

}