Initial commit: 玄学推演项目
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package xuan.utils;
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import com.alibaba.fastjson.JSONObject;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.commons.validator.routines.InetAddressValidator;
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import java.net.URL;
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import java.util.Map;
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import java.util.HashMap;
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import java.io.BufferedReader;
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import java.net.URLConnection;
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import java.io.InputStreamReader;
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import java.nio.charset.StandardCharsets;
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/**
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* 百度地图定位工具
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*
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* @author 善待
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*/
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public class BaiduMapsUtil {
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/* API地址：https://lbsyun.baidu.com/faq/api?title=webapi */
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/**
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* 开发者密钥
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*/
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private static final String ak = ""; // 密钥申请地址：https://lbsyun.baidu.com/apiconsole/key#/home
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//*******************************************************************************************************************************
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/**
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* 通过地区获取经纬度
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*
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* @param address 地区
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* @return 经纬度
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*/
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public static Map<String, Double> getLngAndLat(String address) {
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/* 接口文档地址：https://lbsyun.baidu.com/faq/api?title=webapi/guide/webservice-geocoding-base */
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// 1、参数校验
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if (StringUtils.isBlank(ak)) throw new NullPointerException("请填写百度开发者密钥");
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if (StringUtils.isBlank(address)) throw new NullPointerException("请填写地区");
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// 2、发送URL请求
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String url = "https://api.map.baidu.com/geocoding/v3/?address=" + address + "&output=json&ak=" + ak;
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JSONObject data = sendUrl(url);
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// 3、获取数据
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Map<String, Double> map = new HashMap<>();
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if (data.get("status").toString().equals("0")) {
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map.put("lng", data.getJSONObject("result").getJSONObject("location").getDouble("lng")); // 经度
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map.put("lat", data.getJSONObject("result").getJSONObject("location").getDouble("lat")); // 纬度
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} else {
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throw new NullPointerException("定位失败");
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}
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return map;
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}
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/**
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* 通过经纬度获取地区
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*
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* @param lng 经度
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* @param lat 纬度
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* @return 地区
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*/
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public static String getAddress(String lng, String lat) {
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/* 接口文档地址：https://lbsyun.baidu.com/faq/api?title=webapi/guide/webservice-geocoding-abroad-base */
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// 1、参数校验
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if (StringUtils.isBlank(ak)) throw new NullPointerException("请填写百度开发者密钥");
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if (StringUtils.isBlank(lng) || StringUtils.isBlank(lat)) throw new NullPointerException("请填完善经纬度");
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// 2、发送URL请求
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String url = "https://api.map.baidu.com/reverse_geocoding/v3/?location=" + lat + "," + lng + "&output=json&coordtype=wgs84ll&extensions_poi=1&extensions_town=true&ak=" + ak;
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JSONObject data = sendUrl(url);
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// 3、获取数据
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String address;
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if (data.get("status").toString().equals("0")) {
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address = data.getJSONObject("result").getString("formatted_address"); // 标准的结构化地址
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} else {
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throw new NullPointerException("定位失败");
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}
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return address;
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}
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/**
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* 通过机器IP定位获取地区，不支持ipv6（若机器IP为空，则根据发送请求的机器IP定位）
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*
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* @param ip 机器IP（如：127.0.0.1）
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* @return 地区
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*/
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public static String getAddressToIp(String ip) {
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/* 接口文档地址：https://lbsyun.baidu.com/faq/api?title=webapi/ip-api-base */
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// 1、参数校验
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if (StringUtils.isBlank(ak)) throw new NullPointerException("请填写百度开发者密钥");
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if (StringUtils.isNotBlank(ip) && checkIp(ip)) {
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if ("localhost".equals(ip) || "127.0.0.1".equals(ip)) {
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ip = "";
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}
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} else {
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ip = "";
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}
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// 2、发送URL请求
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String url = "https://api.map.baidu.com/location/ip?ip=" + ip + "&coor=bd09ll&&ak=" + ak;
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JSONObject data = sendUrl(url);
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// 3、获取数据
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String address;
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if (data.get("status").toString().equals("0")) {
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address = data.getJSONObject("content").getString("address"); // 简要地址信息
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} else {
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throw new NullPointerException("定位失败");
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}
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return address;
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}
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//-------------------------------------------------------------------------------------------------------------------------------
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/**
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* 机器IP校验
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*
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* @param ip 机器IP（ipv4）
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* @return true:格式正确。false:格式错误
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*/
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private static boolean checkIp(String ip) {
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boolean isFlag = true;
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InetAddressValidator validator = InetAddressValidator.getInstance();
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if (!validator.isValidInet4Address(ip)) {
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isFlag = false;
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}
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return isFlag;
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}
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/**
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* 发送URL请求
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*
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* @param url URL路径
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* @return 数据
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*/
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private static JSONObject sendUrl(String url) {
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StringBuilder stringBuilder = new StringBuilder();
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try {
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URL oracle = new URL(url);
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URLConnection uc = oracle.openConnection();
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InputStreamReader isr = new InputStreamReader(uc.getInputStream(), StandardCharsets.UTF_8);
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BufferedReader br = new BufferedReader(isr);
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String inputLine;
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while (null != (inputLine = br.readLine())) {
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stringBuilder.append(inputLine);
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}
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br.close();
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} catch (Exception e) {
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throw new NullPointerException(e.getMessage());
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}
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return JSONObject.parseObject(stringBuilder.toString());
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}
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}
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