地址转换为经纬度

最新推荐文章于 2024-08-20 15:32:18 发布

最新推荐文章于 2024-08-20 15:32:18 发布 · 2k 阅读

文章标签：

#java #大数据 #前端 #ViewUI

本文介绍了一种使用Java编程语言从Google Maps API获取地址对应地理坐标的实现方法。该方法首先对输入地址进行编码处理，然后通过构造特定的URL请求来获取地理坐标，并解析返回的数据以提取坐标信息。

经过整理后的代码

package a;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

public class Demo01 {
	public static void getCoordinate(String addr) {
		String addrs = "";
		String address = null;
		try {
			address = java.net.URLEncoder.encode(addr, "UTF-8");
		} catch (UnsupportedEncodingException e1) {
			e1.printStackTrace();
		}
		;
		String output = "csv";
		String key = "abc";
		String url = String.format(
				"http://maps.google.com/maps/geo?q=%s&output=%s&key=%s",
				address, output, key);
		URL myURL = null;
		URLConnection httpsConn = null;
		// 进行转码
		try {
			myURL = new URL(url);
		} catch (MalformedURLException e) {
			e.printStackTrace();
		}

		try {
			httpsConn = (URLConnection) myURL.openConnection();
			if (httpsConn != null) {
				InputStreamReader insr = new InputStreamReader(
						httpsConn.getInputStream(), "UTF-8");
				BufferedReader br = new BufferedReader(insr);
				String data = null;
				if ((data = br.readLine()) != null) {
					System.out.println(data);
					String[] retList = data.split(",");
					if (retList.length > 2 && ("200".equals(retList[0]))) {
						addrs = retList[2];
						addrs = addr.replace("", "");
					} else {
						addrs = "";
					}
				}
				insr.close();
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
		System.out.println(addrs);
	}

	public static void main(String[] args) {
		getCoordinate("中国北京市");
	}
}