获取百度地图API返回值(基于IP大致定位),并转化为JSON Object
import cn.hutool.core.lang.Console;
import cn.hutool.http.HttpRequest;
import cn.hutool.json.JSONObject;
import cn.hutool.json.JSONUtil;
/*
* 基于IP大致定位
* */
public class LocationByIP {
public static JSONObject getJson(String ak) {
LocationByIP locationByIP = new LocationByIP();
String url = "http://api.map.baidu.com/location/ip?ak=" + ak + "&coor=bd09ll";
//Console.log("请求:" + url);
//get请求,获取响应实体
String json = HttpRequest.get(url).execute().body();
Console.log("响应内容:" + json);
if (json != null && !"".equals(json)) {
//JSONUtil.parseObj(jsonStr)会自动unicode编码转汉字
return JSONUtil.parseObj(json);
}
return null;
}
}
根据地址获取百度地图API返回值,并转化为JSON Object
import cn.hutool.core.lang.Console;
import cn.hutool.http.HttpRequest;
import cn.hutool.json.JSONObject;
import cn.hutool.json.JSONUtil;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.NoSuchAlgorithmException;
import java.util.LinkedHashMap;
import java.util.Map;
public class EntCoordSyncJob {
public static JSONObject getCoordinateJson(String dom, String ak, String sk) {
if (dom != null && !"".equals(dom)) {
dom = dom.replaceAll("\\s*", "").replace("#", "栋");
try {
//计算sn值
String sn = getSn(dom, ak, sk);
//对中文部分编码
String key = java.net.URLEncoder.encode(dom, "UTF-8");
String url = "http://api.map.baidu.com/geocoder/v2/?address=" + key + "&output=json&ak=" + ak + "&sn=" + sn;
Console.log("请求:" + url);
//get请求,获取响应实体
String json = HttpRequest.get(url).execute().body();
Console.log("响应内容:" + json);
JSONObject obj = JSONUtil.parseObj(json);
if (json != null && !"".equals(json) && "0".equals(obj.getStr("status"))) {
return obj;
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
return null;
}
public static String getSn(String addressdom, String ak, String sk) throws UnsupportedEncodingException {
Map paramsMap = new LinkedHashMap<String, String>();
paramsMap.put("address", addressdom);
paramsMap.put("output", "json");
paramsMap.put("ak", ak);
String paramsStr = toQueryString(paramsMap);
String wholeStr = new String("/geocoder/v2/?" + paramsStr + sk);
String tempStr = URLEncoder.encode(wholeStr, "UTF-8");
// 调用下面的MD5方法得到最后的sn签名
return MD5(tempStr);
}
// 对Map内所有value作utf8编码,拼接返回结果
public static String toQueryString(Map<?, ?> data) throws UnsupportedEncodingException {
StringBuilder queryString = new StringBuilder();
for (Map.Entry<?, ?> pair : data.entrySet()) {
queryString.append(pair.getKey()).append("=");
queryString.append(URLEncoder.encode((String) pair.getValue(), "UTF-8")).append("&");
}
if (queryString.length() > 0) {
queryString.deleteCharAt(queryString.length() - 1);
}
return queryString.toString();
}
// 来自stackoverflow的MD5计算方法,调用了MessageDigest库函数,并把byte数组结果转换成16进制
public static String MD5(String md5) {
try {
java.security.MessageDigest md = java.security.MessageDigest.getInstance("MD5");
byte[] array = md.digest(md5.getBytes());
StringBuilder sb = new StringBuilder();
for (byte b : array) {
sb.append(Integer.toHexString((b & 0xFF) | 0x100).substring(1, 3));
}
return sb.toString();
} catch (NoSuchAlgorithmException e) {
}
return null;
}
}
根据经纬度计算日出日落时间
import cn.hutool.core.lang.Console;
import cn.hutool.json.JSONObject;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
public class SunTimesUtil {
private static Double start = 0.0;
private static Double end = 0.0;
private static Double sRA = 0.0;
private static Double sdec = 0.0;
private static Double sr = 0.0;
private static Double lon = 0.0;
public static void main(String addressDom, String AK, String ipAK, String SK) {
Calendar calendar = Calendar.getInstance();
Console.log("当前时间:" + calendar.getTime());
//获取经纬度坐标
JSONObject jsonObject = EntCoordSyncJob.getCoordinateJson(addressDom, AK, SK);
JSONObject jsonByIP = LocationByIP.getJson(ipAK);
double lng = jsonObject.getJSONObject("result").getJSONObject("location").getDouble("lng");
double lat = jsonObject.getJSONObject("result").getJSONObject("location").getDouble("lat");
double x = 0.0, y = 0.0;
String addr = "";
if (jsonByIP != null && "0".equals(jsonByIP.getStr("status"))) {
//point为当前城市中心点
x = jsonByIP.getJSONObject("content").getJSONObject("point").getDouble("x");
y = jsonByIP.getJSONObject("content").getJSONObject("point").getDouble("y");
addr = jsonByIP.getJSONObject("content").getStr("address");
Console.log("IP定位的经纬度:" + x + "," + y);
} else {
Console.log("IP定位出错");
}
//算出日出日落时间
HashMap<String, Object> smap = getSunTimeAtDate(calendar.getTime(), lng, lat);
//Console.log(smap);
Console.log("地址:" + addressDom + "\n日出时间:" + smap.get("sunRise") + "\n日落时间:" + smap.get("sunSet"));
HashMap<String, Object> ipmap = getSunTimeAtDate(calendar.getTime(), x, y);
//Console.log(ipmap);
Console.log("IP定位地址:" + addr + "\n日出时间:" + ipmap.get("sunRise") + "\n日落时间:" + ipmap.get("sunSet"));
}
public static HashMap<String, Object> getSunTimeAtDate(Date d, Double longitude, Double latitude) {
long xcts = Days_since_2000_Jan_0(d);
HashMap<String, Object> hm = new HashMap<>(2);
try {
hm = GetSunTime(xcts, longitude, latitude);
} catch (ParseException e) {
e.printStackTrace();
}
return hm;
}
public static HashMap<String, Object> GetSunTime(long day, Double longitude, Double latitude) throws ParseException {
SunRiset(day, longitude, latitude, -35.0 / 60.0, 1, start, end);
String sunrise = ToLocalTime(start);
String sunset = ToLocalTime(end);
HashMap<String, Object> hm = new HashMap<>(2);
hm.put("sunRise", sunrise);
hm.put("sunSet", sunset);
return hm;
}
private static String ToLocalTime(Double utTime) {
int hour = (int) (Math.floor(utTime));
double temp = utTime - hour;
hour += 8;
temp = temp * 60;
int minute = (int) (Math.floor(temp));
String minuteStr = minute + " ";
if (minute < 10) {
minuteStr = "0" + minute;
}
return hour + ":" + minuteStr;
}
private static void Sunpos(Double d, Double lon, Double r) {
/*
* M 太阳的平均近点角,从太阳观察到的地球(=从地球看到太阳的)距近日点(近地点)的角度。
* w 近日点的平均黄道经度。
* e 地球椭圆公转轨道离心率。
* E 太阳的偏近点角。计算公式见下面。
* x, y 经纬度
* v 真近点角,太阳在任意时刻的真实近点角。
*/
Double M, w, e, E, x, y, v;
//自变量的组成:2000.0时刻太阳黄经为356.0470度,此后每天约推进一度(360度/365天
M = Revolution(356.0470 + 0.9856002585 * d);
//近日点的平均黄经。
w = 282.9404 + 4.70935E-5 * d;
//地球公转椭圆轨道离心率的时间演化。以上公式和黄赤交角公式一样,不必深究。
e = 0.016709 - 1.151E-9 * d;
E = M + e * Radge * Sind(M) * (1.0 + e * Cosd(M));
x = Cosd(E) - e;
y = Math.sqrt(1.0 - e * e) * Sind(E);
setSr(Math.sqrt(x * x + y * y));
v = Atan2d(y, x);
lon = v + w;
setLon(lon);
if (lon >= 360.0) {
lon -= 360.0;
setLon(lon);
}
}
private static void Sun_RA_dec(Double d, Double RA, Double dec, Double r) {
Double obl_ecl, x, y, z;
Sunpos(d, lon, r);
//计算太阳的黄道坐标。
x = sr * Cosd(lon);
y = sr * Sind(lon);
//计算太阳的直角坐标。
obl_ecl = 23.4393 - 3.563E-7 * d;
//黄赤交角,同前。
z = y * Sind(obl_ecl);
y = y * Cosd(obl_ecl);
//把太阳的黄道坐标转换成赤道坐标(暂改用直角坐标)。
setsRA(Atan2d(y, x));
setSdec(Atan2d(z, Math.sqrt(x * x + y * y)));
//最后转成赤道坐标。显然太阳的位置是由黄道坐标方便地直接确定的,但必须转换到赤
//道坐标里才能结合地球的自转确定我们需要的白昼长度。
}
private static int SunRiset(long day, Double longitude, Double lat, Double altit, int upper_limb, Double trise, Double tset) {
/*
* d,Days since 2000 Jan 0.0 (negative before)
* sradius,太阳视半径,约16分(受日地距离、大气折射等诸多影响)
* t,周日弧,太阳一天在天上走过的弧长。
* tsouth,ime when Sun is at south
* sidtime,当地恒星时,即地球的真实自转周期。比平均太阳日(日常时间)长3分56秒。
*/
Double d, sradius, t, tsouth, sidtime;
/* Return cde from function - usually 0 */
int rc = 0;
/* 计算观测地当日中午时刻对应2000.0起算的日数。 */
d = day/* Days_since_2000_Jan_0(date)*/ + 0.5 - longitude / 360.0;
/* 计算同时刻的当地恒星时(以角度为单位)。以格林尼治为基准,用经度差校正。 */
sidtime = Revolution(GMST0(d) + 180.0 + longitude);
/* 计算同时刻太阳赤经赤纬。 */
Sun_RA_dec(d, sRA, sdec, sr);
/* 计算太阳日的正午时刻,以世界时(格林尼治平太阳时)的小时计 */
tsouth = 12.0 - Rev180(sidtime - sRA) / 15.0;
/* 计算太阳视半径。0.2666是一天文单位处的太阳视半径(角度)*/
sradius = 0.2666 / sr;
/* 如果要用上边缘,就要扣除一个视半径。 */
if (upper_limb != 0) {
altit -= sradius;
}
//计算周日弧。直接利用球面三角公式。如果碰到极昼极夜问题,同前处理。
Double cost;
cost = (Sind(altit) - Sind(lat) * Sind(sdec)) /
(Cosd(lat) * Cosd(sdec));
if (cost >= 1.0) {
rc = -1;
t = 0.0;
} else {
if (cost <= -1.0) {
rc = +1;
t = 12.0;/* Sun always above altit */
} else
t = Acosd(cost) / 15.0;/* The diurnal arc, hours */
}
/* Store rise and set times - in hours UT */
setStart(tsouth - t);
setEnd(tsouth + t);
return rc;
}
private static long Days_since_2000_Jan_0(Date date) {
String d2000 = "2000-01-01";
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
long ll = 0L;
try {
ll = date.getTime() - sdf.parse(d2000).getTime();
} catch (ParseException e) {
e.printStackTrace();
}
return ll / 1000 / 60 / 60 / 24;
}
private static Double Revolution(Double x) {
return (x - 360.0 * Math.floor(x * Inv360));
}
private static Double Rev180(Double x) {
return (x - 360.0 * Math.floor(x * Inv360 + 0.5));
}
private static Double GMST0(Double d) {
Double sidtim0;
sidtim0 = Revolution((180.0 + 356.0470 + 282.9404) +
(0.9856002585 + 4.70935E-5) * d);
return sidtim0;
}
private static Double Inv360 = 1.0 / 360.0;
private static Double Sind(Double x) {
return Math.sin(x * Degrad);
}
private static Double Cosd(Double x) {
return Math.cos(x * Degrad);
}
private static Double Acosd(Double x) {
return Radge * Math.acos(x);
}
private static Double Atan2d(Double y, Double x) {
return Radge * Math.atan2(y, x);
}
private static Double Radge = 180.0 / Math.PI;
private static Double Degrad = Math.PI / 180.0;
public static Double getStart() {
return start;
}
public static void setStart(Double start) {
SunTimesUtil.start = start;
}
public static Double getsRA() {
return sRA;
}
public static void setsRA(Double sRA) {
SunTimesUtil.sRA = sRA;
}
public static Double getSdec() {
return sdec;
}
public static void setSdec(Double sdec) {
SunTimesUtil.sdec = sdec;
}
public static Double getSr() {
return sr;
}
public static void setSr(Double sr) {
SunTimesUtil.sr = sr;
}
public static Double getLon() {
return lon;
}
public static void setLon(Double lon) {
SunTimesUtil.lon = lon;
}
public static Double getEnd() {
return end;
}
public static void setEnd(Double end) {
SunTimesUtil.end = end;
}
}
测试
package test;
import org.junit.jupiter.api.Test;
public class SunTimesTest {
@Test
public void test01() {
String addressDom = "天津西青区中北科技产业园一区天软创业学院";
String snAK = "********************************";
String SK = "********************************";
String ipAK = "********************************";/*浏览器端应用密钥*/
SunTimesUtil.main(addressDom, snAK, ipAK, SK);
}
}
测试结果
测试结果