Java如何在项目中调用高德地图API

2024-07-01 09:04| 来源: 网络整理| 查看: 265

登录高德开放平台http://lbs.amap.com/，点击登录，成为开发者，这个过程需要绑定邮箱。

成功后点击控制台。点击应用管理。并创建新应用。应用名称都可以自己看着填。

成功后就可以添加key了，当然，也要有名称等信息。

------------------到这里完成了第一步，你可以通过高德给你的key来调用地图API了。

接下来，如何调用呢？

在高德官网的开发文档中有详细的教程，但是我献上我项目的调用经验代码给新手：

1：创建一个工具类MapUtil，导入一些需要的包：

import net.sf.json.JSONArray; import net.sf.json.JSONObject; import org.apache.commons.collections.MapUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.*; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLConnection; import java.util.List; import java.util.Map; import java.util.regex.Pattern;

2：定义你在高德官网获取的key

private static String key = "xxxxxxxxxxxxxxxxxxxxxxxxx";

3:接下来，是主角了，api如下：

/** * 阿里云api 根据经纬度获取地址 * * @param log * @param lat * @return */ public static String getAdd(String log, String lat) { StringBuffer s = new StringBuffer(); s.append("key=").append(key).append("&location=").append(log).append(",").append(lat); String res = sendPost("http://restapi.amap.com/v3/geocode/regeo", s.toString()); logger.info(res); JSONObject jsonObject = JSONObject.fromObject(res); JSONObject jsonObject1 = JSONObject.fromObject(jsonObject.get("regeocode")); String add = jsonObject1.get("formatted_address").toString(); return add; } /** * 阿里云api 根据经纬度获取所在城市 * * @param log * @param lat * @return */ public static String getCity(String log, String lat) { // log 大 lat 小 // 参数解释: 纬度,经度 type 001 (100代表道路，010代表POI，001代表门址，111可以同时显示前三项) String urlString = "http://gc.ditu.aliyun.com/regeocoding?l=" + lat + "," + log + "&type=010"; String res = ""; try { URL url = new URL(urlString); java.net.HttpURLConnection conn = (java.net.HttpURLConnection) url.openConnection(); conn.setDoOutput(true); conn.setRequestMethod("POST"); java.io.BufferedReader in = new java.io.BufferedReader(new java.io.InputStreamReader(conn.getInputStream (), "UTF-8")); String line; while ((line = in.readLine()) != null) { res += line + "\n"; } in.close(); JSONObject jsonObject = JSONObject.fromObject(res); JSONArray jsonArray = JSONArray.fromObject(jsonObject.getString("addrList")); JSONObject j_2 = JSONObject.fromObject(jsonArray.get(0)); String allAdd = j_2.getString("admName"); String arr[] = allAdd.split(","); res = arr[1]; } catch (Exception e) { logger.info("error in wapaction,and e is " + e.getMessage()); } logger.info(res); return res; } /** * 高德api 根据地址获取经纬度 * * @param name * @return */ public static String getLatAndLogByName(String name) { StringBuffer s = new StringBuffer(); s.append("key=" + key + "&address=" + name); String res = sendPost("http://restapi.amap.com/v3/geocode/geo", s.toString()); logger.info(res); JSONObject jsonObject = JSONObject.fromObject(res); JSONArray jsonArray = JSONArray.fromObject(jsonObject.getString("geocodes")); JSONObject location = (JSONObject) jsonArray.get(0); String add = location.get("location").toString(); return add; } /** * 高德api 根据地址获取经纬度 * * @param name * @return */ public static String getAddByAMAP(String log, String lat) { StringBuffer s = new StringBuffer(); s.append("key=").append(key).append("&location=").append(log).append(",").append(lat); String res = sendPost("http://restapi.amap.com/v3/geocode/regeo", s.toString()); logger.info(res); JSONObject jsonObject = JSONObject.fromObject(res); JSONObject jsonObject1 = JSONObject.fromObject(jsonObject.get("regeocode")); String add = jsonObject1.get("formatted_address").toString(); return add; } /** * 高德api 坐标转换---转换至高德经纬度 * * @param name * @return */ public static String convertLocations(String log, String lat, String type) { StringBuffer s = new StringBuffer(); s.append("key=").append(key).append("&locations=").append(log).append(",").append(lat).append("&coordsys="); if (type == null) { s.append("gps"); } else { s.append(type); } String res = sendPost("http://restapi.amap.com/v3/assistant/coordinate/convert", s.toString()); logger.info(res); JSONObject jsonObject = JSONObject.fromObject(res); String add = jsonObject.get("locations").toString(); return add; } public static String getAddByName(String name) { // log 大 lat 小 // 参数解释: 纬度,经度 type 001 (100代表道路，010代表POI，001代表门址，111可以同时显示前三项) String urlString = "http://gc.ditu.aliyun.com/geocoding?a=" + name; String res = ""; try { URL url = new URL(urlString); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setDoOutput(true); conn.setRequestMethod("POST"); BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8")); String line; while ((line = in.readLine()) != null) { res += line + "\n"; } in.close(); JSONObject jsonObject = JSONObject.fromObject(res); String lon = jsonObject.getString("lon"); String lat = jsonObject.getString("lat"); System.err.println(jsonObject); res = getNearbyAdd(lon, lat); } catch (Exception e) { logger.info("error in wapaction,and e is " + e.getMessage()); e.printStackTrace(); } return res; } public static String getNearbyAdd(String log, String lat) { String add = sendGet("http://ditu.amap.com/service/regeo", "longitude=" + log + "&latitude=" + lat + "&type=010"); logger.info(add); return add; } /** * 高德api 关键字模糊查询 * * @param keyWord * @param city * @return */ public static String getKeywordsAddByLbs(String keyWord, String city) { StringBuffer s = new StringBuffer(); s.append("key=" + key + "&keywords="); if (keyWord.contains(" ")) { String[] str = keyWord.split(" "); for (int i = 0; i < str.length; i++) { if (i == 0) { s.append(str[i]); } else { s.append("+" + str[i]); } } } else { s.append(keyWord); } s.append("&city=" + city); s.append("offset=10&page=1"); String around = sendPost("http://restapi.amap.com/v3/place/text", s.toString()); logger.info(around); return around; } /** * 高德api 经纬度/关键字附近地标建筑及地点查询 * * @param log * @param lat * @param keyWord * @return */ public static String getAroundAddByLbs(String log, String lat, String keyWord) { String around = sendPost("http://restapi.amap.com/v3/place/around", "key=" + key + "&location=" + log + "," + lat + "&keywords=" + keyWord + "&radius=2000&offset=10&page=1"); logger.info(around); return around; }

4：到了这里，你还需要一些调用所需的工具方法，我页直接帮你整合在下面：

public static String sendGet(String url, String param) { String result = ""; BufferedReader in = null; try { String urlNameString = url + "?" + param; URL realUrl = new URL(urlNameString); // 打开和URL之间的连接 URLConnection connection = realUrl.openConnection(); // 设置通用的请求属性 connection.setRequestProperty("accept", "*/*"); connection.setRequestProperty("connection", "Keep-Alive"); connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); // 建立实际的连接 connection.connect(); // 获取所有响应头字段 Map map = connection.getHeaderFields(); // 遍历所有的响应头字段 for (String key : map.keySet()) { logger.info(key + "--->" + map.get(key)); } // 定义 BufferedReader输入流来读取URL的响应 in = new BufferedReader(new InputStreamReader(connection.getInputStream())); String line; while ((line = in.readLine()) != null) { result += line; } } catch (Exception e) { logger.info("发送GET请求出现异常！" + e); e.printStackTrace(); } // 使用finally块来关闭输入流 finally { try { if (in != null) { in.close(); } } catch (Exception e2) { e2.printStackTrace(); } } return result; } /** * 向指定 URL 发送POST方法的请求 * * @param url 发送请求的 URL * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。 * @return 所代表远程资源的响应结果 */ public static String sendPost(String url, String param) { PrintWriter out = null; BufferedReader in = null; String result = ""; try { URL realUrl = new URL(url); // 打开和URL之间的连接 URLConnection conn = realUrl.openConnection(); // 设置通用的请求属性 conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); // 发送POST请求必须设置如下两行 conn.setDoOutput(true); conn.setDoInput(true); // 获取URLConnection对象对应的输出流 out = new PrintWriter(conn.getOutputStream()); // 发送请求参数 out.print(param); // flush输出流的缓冲 out.flush(); // 定义BufferedReader输入流来读取URL的响应 in = new BufferedReader(new InputStreamReader(conn.getInputStream())); String line; while ((line = in.readLine()) != null) { result += line; } } catch (Exception e) { logger.info("发送 POST 请求出现异常！" + e); e.printStackTrace(); } // 使用finally块来关闭输出流、输入流 finally { try { if (out != null) { out.close(); } if (in != null) { in.close(); } } catch (IOException ex) { ex.printStackTrace(); } } return result; } /** * GET请求数据 * * @param get_url url地址 * @param content key=value形式 * @return 返回结果 * @throws Exception */ public static String sendGetData(String get_url, String content) throws Exception { String result = ""; URL getUrl = null; BufferedReader reader = null; String lines = ""; HttpURLConnection connection = null; try { if (content != null && !content.equals("")) get_url = get_url + "?" + content; // get_url = get_url + "?" + URLEncoder.encode(content, "utf-8"); getUrl = new URL(get_url); connection = (HttpURLConnection) getUrl.openConnection(); connection.connect(); // 取得输入流，并使用Reader读取 reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));// 设置编码 while ((lines = reader.readLine()) != null) { result = result + lines; } return result; } catch (Exception e) { throw e; } finally { if (reader != null) { reader.close(); reader = null; } connection.disconnect(); } } /** * @param POST_URL url地址 * @param content key=value形式 * @return 返回结果 * @throws Exception */ public static String sendPostData(String POST_URL, String content) throws Exception { HttpURLConnection connection = null; DataOutputStream out = null; BufferedReader reader = null; String line = ""; String result = ""; try { URL postUrl = new URL(POST_URL); connection = (HttpURLConnection) postUrl.openConnection(); connection.setDoOutput(true); connection.setDoInput(true); connection.setRequestMethod("POST"); // Post 请求不能使用缓存 connection.setUseCaches(false); connection.setInstanceFollowRedirects(true); connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); connection.connect(); out = new DataOutputStream(connection.getOutputStream()); // content = URLEncoder.encode(content, "utf-8"); // DataOutputStream.writeBytes将字符串中的16位的unicode字符�?8位的字符形式写道流里�? out.writeBytes(content); out.flush(); out.close(); // 获取结果 reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));// 设置编码 while ((line = reader.readLine()) != null) { result = result + line; } return result; } catch (Exception e) { throw e; } finally { if (out != null) { out.close(); out = null; } if (reader != null) { reader.close(); reader = null; } connection.disconnect(); } } /* * 过滤掉html里不安全的标签，不允许用户输入这些标�? */ public static String htmlFilter(String inputString) { // return inputString; String htmlStr = inputString; // 含html标签的字符串 String textStr = ""; java.util.regex.Pattern p_script; java.util.regex.Matcher m_script; try { String regEx_script = "]*?>[\\s\\S]*?"; String regEx_onevent = "on[^\\s]+=\\s*"; String regEx_hrefjs = "href=javascript:"; String regEx_iframe = "]*?>[\\s\\S]*?"; String regEx_link = "]*?/>"; htmlStr = Pattern.compile(regEx_script, Pattern.CASE_INSENSITIVE).matcher(htmlStr).replaceAll(""); htmlStr = Pattern.compile(regEx_onevent, Pattern.CASE_INSENSITIVE).matcher(htmlStr).replaceAll(""); htmlStr = Pattern.compile(regEx_hrefjs, Pattern.CASE_INSENSITIVE).matcher(htmlStr).replaceAll(""); htmlStr = Pattern.compile(regEx_iframe, Pattern.CASE_INSENSITIVE).matcher(htmlStr).replaceAll(""); htmlStr = Pattern.compile(regEx_link, Pattern.CASE_INSENSITIVE).matcher(htmlStr).replaceAll(""); textStr = htmlStr; } catch (Exception e) { System.err.println("Html2Text: " + e.getMessage()); } return textStr; }

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