Web墨卡托坐标与WGS84经纬度互转 java代码

package Mypackage;

public class coordinate {static double M_PI = Math.PI;//经纬度转墨卡托// 经度(lon)，纬度(lat)public static double[] lonLat2Mercator(double lon,double lat)

{

double[] xy = new double[2];

double x = lon *20037508.342789/180;

double y = Math.log(Math.tan((90+lat)*M_PI/360))/(M_PI/180);

y = y *20037508.34789/180;

xy[0] = x;xy[1] = y;

return xy;

}

//墨卡托转经纬度

public static double[] Mercator2lonLat(double mercatorX,double mercatorY){

double[] xy = new double[2];

double x = mercatorX/20037508.34*180;

double y = mercatorY/20037508.34*180;

y= 180/M_PI*(2*Math.atan(Math.exp(y*M_PI/180))-M_PI/2);

xy[0] = x;

xy[1] = y;

return xy;

}public static void main(String[] args){double[] num;num = lonLat2Mercator(120.385222,36.061416);for(int i=0;i<num.length;i++){System.out.println(num[i]);}//num = Mercator2lonLat(13401221.612075035,4309075.414032666);//for(int i=0;i<num.length;i++)//{//System.out.println(num[i]);

//}

}

}

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