java 高德地图数据库_【爬虫】Java关于高德地图爬取数据

您好！关于高德地图的数据爬取，一般需要使用爬虫技术。以下是一个简单的Java爬虫示例，可以爬取高德地图上的POI（兴趣点）数据：

import java.io.*;
import java.net.*;
import java.util.*;

public class AmapSpider {
    private static final String KEYWORDS = "餐厅"; // 搜索关键词
    private static final String CITY = "北京市"; // 搜索城市
    private static final int PAGE_SIZE = 20; // 每页记录数
    private static final int MAX_PAGES = 100; // 最大页数

    public static void main(String[] args) throws Exception {
        String url = "https://restapi.amap.com/v3/place/text";
        String params = "keywords=" + URLEncoder.encode(KEYWORDS, "UTF-8")
                + "&city=" + URLEncoder.encode(CITY, "UTF-8")
                + "&offset=" + PAGE_SIZE;

        for (int i = 1; i <= MAX_PAGES; i++) {
            String pageParams = params + "&page=" + i;
            URL requestUrl = new URL(url + "?" + pageParams + "&key=YOUR_AMAP_API_KEY");
            HttpURLConnection connection = (HttpURLConnection) requestUrl.openConnection();
            connection.setRequestMethod("GET");

            int responseCode = connection.getResponseCode();
            if (responseCode != 200) {
                System.err.println("Error: " + responseCode);
                break;
            }

            String response = readResponse(connection);
            System.out.println(response);
        }
    }

    private static String readResponse(HttpURLConnection connection) throws Exception {
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
            StringBuilder sb = new StringBuilder();
            String line;
            while ((line = reader.readLine()) != null) {
                sb.append(line);
            }
            return sb.toString();
        }
    }
}

请注意，这里需要替换 `YOUR_AMAP_API_KEY` 为您自己的高德地图API密钥。此外，高德地图API有一定的访问限制，请勿滥用。如果需要大量爬取数据，请先了解相关政策和规定，并咨询高德地图官方。