老系统对接

src/com/sino/publicclass/util/MapUtil.java

@@ -0,0 +1,39 @@
+/*
+ * Created on 2006-3-17
+ *
+ * 
+ * Window - Preferences - Java - Code Style - Code Templates
+ */
+package com.sino.publicclass.util;
+
+/**
+ * @author JosephZhou
+ *
+ * 
+ * Window - Preferences - Java - Code Style - Code Templates
+ */
+public class MapUtil {
+
+	/**
+	 * 
+	 */
+	public MapUtil() {
+		super();
+		// 
+	}
+	
+	public static long distance(double lon1,double lat1,double lon2,double lat2) 
+	{ 
+		double R=6378136.49;
+		double PI=Math.PI;
+		double dlon=Math.abs(lon1-lon2);
+		if(dlon>180)dlon=360-dlon;
+		double lsqure=2-2*Math.sin(lat1*PI/180)*Math.sin(lat2*PI/180)-2*Math.cos(lat1*PI/180)*Math.cos(lat2*PI/180)*Math.cos(dlon*PI/180);
+		double d=Math.asin(Math.sqrt(lsqure)*0.5)*2*R;
+		return Math.round(d*100); 
+	}
+
+	public static void main(String[] args) {
+		System.out.println(MapUtil.distance(0.0075,31.236111,0.0041667,31.237222));
+	}
+}