udf

src/main/java/cn/com/duiba/udaf/GeoHashUDAF1.java → src/main/java/cn/com/duiba/udf/GeoHashUDF.java

-package cn.com.duiba.udaf;
+package cn.com.duiba.udf;
 
 import cn.com.duiba.utils.GeoHashUtil;
-//import org.apache.hadoop.hive.ql.exec.UDAF;
 import org.apache.hadoop.hive.ql.exec.UDF;
 
-public class GeoHashUDAF extends UDF {
+public class GeoHashUDF extends UDF {
     public String evaluate(String gps_longitude, String gps_latitude,int hashLength) {
         try {
             return GeoHashUtil.evaluate(gps_longitude, gps_latitude, hashLength);

src/main/java/cn/com/duiba/udaf/Wgs84ToBd09UDAF1.java → src/main/java/cn/com/duiba/udf/Wgs84ToBd09UDF.java

-package cn.com.duiba.udaf;
+package cn.com.duiba.udf;
 
 import cn.com.duiba.utils.Wgs84ToBd09Util;
 import org.apache.hadoop.hive.ql.exec.UDF;
 
-public class Wgs84ToBd09UDAF extends UDF {
+public class Wgs84ToBd09UDF extends UDF {
     public String evaluate(String gps_longitude, String gps_latitude) {
         try {
             return Wgs84ToBd09Util.evaluate(gps_longitude, gps_latitude);

src/main/java/cn/com/duiba/utils/Wgs84ToBd09Util.java

 package cn.com.duiba.utils;
 
+import com.google.common.base.Joiner;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.ArrayList;
+import java.util.List;
+
+
 public class Wgs84ToBd09Util {
+
+    static double x_pi = 3.14159265358979324 * 3000.0 / 180.0;
+    static double pi = 3.1415926535897932384626; // π
+    static double a = 6378245.0; //长半轴
+    static double ee = 0.00669342162296594323; //偏心率平方
+
+    public static String evaluate(String gps_longitude, String gps_latitude) {
+        try {
+            if (StringUtils.isEmpty(gps_longitude) || StringUtils.isEmpty(gps_latitude)) {
+                return "";
+            }
+
+            Double lng = Double.valueOf(gps_longitude);
+            Double lat = Double.valueOf(gps_latitude);
+
+           /* if (outOfChina(lng, lat)) {
+                return gps_longitude + "," + gps_latitude;
+            }*/
+
+            double[] wgs84_to_gcj02 = wgs84_to_gcj02(lng, lat);
+            double[] gcj02_to_bd09 = gcj02_to_bd09(wgs84_to_gcj02[0], wgs84_to_gcj02[1]);
+
+            return gcj02_to_bd09[0] + "," + gcj02_to_bd09[1];
+        } catch (Exception e) {
+            return "";
+        }
+    }
+
+    boolean outOfChina(Double lng, Double lat) {
+
+        return !(lng > 73.66 && lng < 135.05 && lat > 3.86 && lat < 53.55);
+    }
+
+    /**
+     * WGS84转GCJ02(火星坐标系)
+     * :param lng:WGS84坐标系的经度
+     * :param lat:WGS84坐标系的纬度
+     * :return:
+     *
+     * @param lng
+     * @param lat
+     */
+    static double[] wgs84_to_gcj02(Double lng, Double lat) {
+        double dlat = _transformlat(lng - 105.0, lat - 35.0);
+        double dlng = _transformlng(lng - 105.0, lat - 35.0);
+        double radlat = lat / 180.0 * pi;
+        double magic = Math.sin(radlat);
+        magic = 1 - ee * magic * magic;
+        double sqrtmagic = Math.sqrt(magic);
+        dlat = (dlat * 180.0) / ((a * (1 - ee)) / (magic * sqrtmagic) * pi);
+        dlng = (dlng * 180.0) / (a / sqrtmagic * Math.cos(radlat) * pi);
+        double mglat = lat + dlat;
+        double mglng = lng + dlng;
+
+        double[] gps = new double[2];
+        gps[0] = mglng;
+        gps[1] = mglat;
+
+        return gps;
+    }
+
+    static double _transformlat(double lng, double lat) {
+        double ret = -100.0 + 2.0 * lng + 3.0 * lat + 0.2 * lat * lat +
+                0.1 * lng * lat + 0.2 * Math.sqrt(Math.abs(lng));
+        ret += (20.0 * Math.sin(6.0 * lng * pi) + 20.0 *
+                Math.sin(2.0 * lng * pi)) * 2.0 / 3.0;
+        ret += (20.0 * Math.sin(lat * pi) + 40.0 *
+                Math.sin(lat / 3.0 * pi)) * 2.0 / 3.0;
+        ret += (160.0 * Math.sin(lat / 12.0 * pi) + 320 *
+                Math.sin(lat * pi / 30.0)) * 2.0 / 3.0;
+        return ret;
+    }
+
+    static double _transformlng(double lng, double lat) {
+        double ret = 300.0 + lng + 2.0 * lat + 0.1 * lng * lng +
+                0.1 * lng * lat + 0.1 * Math.sqrt(Math.abs(lng));
+        ret += (20.0 * Math.sin(6.0 * lng * pi) + 20.0 *
+                Math.sin(2.0 * lng * pi)) * 2.0 / 3.0;
+        ret += (20.0 * Math.sin(lng * pi) + 40.0 *
+                Math.sin(lng / 3.0 * pi)) * 2.0 / 3.0;
+        ret += (150.0 * Math.sin(lng / 12.0 * pi) + 300.0 *
+                Math.sin(lng / 30.0 * pi)) * 2.0 / 3.0;
+        return ret;
+    }
+
+    /**
+     * 火星坐标系(GCJ-02)转百度坐标系(BD-09)
+     * 谷歌、高德——>百度
+     * :param lng:火星坐标经度
+     * :param lat:火星坐标纬度
+     * :return:
+     */
+    static double[] gcj02_to_bd09(double lng, double lat) {
+        double z = Math.sqrt(lng * lng + lat * lat) + 0.00002 * Math.sin(lat * x_pi);
+        double theta = Math.atan2(lat, lng) + 0.000003 * Math.cos(lng * x_pi);
+        double bd_lng = z * Math.cos(theta) + 0.0065;
+        double bd_lat = z * Math.sin(theta) + 0.006;
+        double[] gps = new double[2];
+        gps[0] = bd_lng;
+        gps[1] = bd_lat;
+
+        return gps;
+    }
+
+
+    public static void main(String[] args) {
+        Wgs84ToBd09Util wgs84ToBd09UDF = new Wgs84ToBd09Util();
+        String gps_bd = wgs84ToBd09UDF.evaluate("120.107209", "30.290245");
+        System.out.println(gps_bd);
+
+
+        String ipOri = "115.60.89.29";
+        String[] splits = ipOri.split("\\.");
+        List<String> ipParts = new ArrayList<>();
+        for (int i=0;i<3;i++) {
+
+            String split = splits[i];
+            int length = split.length();
+            if(length==3){
+                ipParts.add(split);
+            }else if(length==2){
+                ipParts.add("0"+split);
+            }else if(length==1){
+                ipParts.add("00"+ipParts);
+            }
+        }
+
+        String ipAfter = Joiner.on("").join(ipParts);
+        System.out.println(ipAfter);
+
+    }
+
 }