找的经纬度转高斯坐标的方法：
http://blog.sina.com.cn/s/blog_5656b0020100chbv.html（原贴地址，版权归原作者所有）
http://outofmemory.cn/code-snippet/81119/GPS-jingweidu-switch-elapsed-xuanzhuan-hou-pingmianzuobiao
脸皮厚的贴出来。正如作者所说，可以用。
注意：为了准确计算，一定要把中央子午线改为当地的。
package tms.base.systemlib;
@SuppressWarnings("unchecked")
public class GaussXYDeal {
// 由高斯投影坐标反算成经纬度
public static double[] GaussToBL(double X, double Y)//, double *longitude, double *latitude)
{
int ProjNo; int ZoneWide; ////带宽
double[] output = new double[2];
double longitude1,latitude1, longitude0, X0,Y0, xval,yval;//latitude0,
double e1,e2,f,a, ee, NN, T,C, M, D,R,u,fai, iPI;
iPI = 0.0174532925199433; ////3.1415926535898/180.0;
//a = 6378245.0; f = 1.0/298.3; //54年北京坐标系参数
a=6378140.0; f=1/298.257; //80年西安坐标系参数
ZoneWide = 6; ////6度带宽
ProjNo = (int)(X/1000000L) ; //查找带号
longitude0 = (ProjNo-1) * ZoneWide + ZoneWide / 2;
longitude0 = longitude0 * iPI ; //中央经线
X0 = ProjNo*1000000L+500000L;
Y0 = 0;
xval = X-X0; yval = Y-Y0; //带内大地坐标
e2 = 2*f-f*f;
e1 = (1.0-Math.sqrt(1-e2))/(1.0+Math.sqrt(1-e2));
ee = e2/(1-e2);
M = yval;
u = M/(a*(1-e2/4-3*e2*e2/64-5*e2*e2*e2/256));
fai = u+(3*e1/2-27*e1*e1*e1/32)*Math.sin(2*u)+(21*e1*e1/16-55*e1*e1*e1*e1/32)*Math.sin(
4*u)
+(151*e1*e1*e1/96)*Math.sin(6*u)+(1097*e1*e1*e1*e1/512)*Math.sin(8*u);
C = ee*Math.cos(fai)*Math.cos(fai);
T = Math.tan(fai)*Math.tan(fai);
NN = a/Math.sqrt(1.0-e2*Math.sin(fai)*Math.sin(fai));
R = a*(1-e2)/Math.sqrt((1-e2*Math.sin(fai)*Math.sin(fai))*(1-e2*Math.sin(fai)*Math.sin(fai))*(1-e2*Math.sin
(fai)*Math.sin(fai)));
D = xval/NN;
//计算经度(Longitude) 纬度(Latitude)
longitude1 = longitude0+(D-(1+2*T+C)*D*D*D/6+(5-2*C+28*T-3*C*C+8*ee+24*T*T)*D
*D*D*D*D/120)/Math.cos(fai);
latitude1 = fai -(NN*Math.tan(fai)/R)*(D*D/2-(5+3*T+10*C-4*C*C-9*ee)*D*D*D*D/24
+(61+90*T+298*C+45*T*T-256*ee-3*C*C)*D*D*D*D*D*D/720);
//转换为度 DD
output[0] = longitude1 / iPI;
output[1] = latitude1 / iPI;
return output;
//*longitude = longitude1 / iPI;
//*latitude = latitude1 / iPI;
}
//// 由经纬度反算成高斯投影坐标
public void GaussToBLToGauss(double longitude, double latitude)
{
int ProjNo=0; int ZoneWide; ////带宽
double longitude1,latitude1, longitude0,latitude0, X0,Y0, xval,yval;
double a,f, e2,ee, NN, T,C,A, M, iPI;
iPI = 0.0174532925199433; ////3.1415926535898/180.0;
ZoneWide = 6; ////6度带宽
a=6378245.0; f=1.0/298.3; //54年北京坐标系参数
////a=6378140.0; f=1/298.257; //80年西安坐标系参数
ProjNo = (int)(longitude / ZoneWide) ;
longitude0 = ProjNo * ZoneWide + ZoneWide / 2;
longitude0 = longitude0 * iPI ;
latitude0 = 0;
System.out.println(latitude0);
longitude1 = longitude * iPI ; //经度转换为弧度
latitude1 = latitude * iPI ; //纬度转换为弧度
e2=2*f-f*f;
ee=e2*(1.0-e2);
NN=a/Math.sqrt(1.0-e2*Math.sin(latitude1)*Math.sin(latitude1));
T=Math.tan(latitude1)*Math.tan(latitude1);
C=ee*Math.cos(latitude1)*Math.cos(latitude1);
A=(longitude1-longitude0)*Math.cos(latitude1);
M=a*((1-e2/4-3*e2*e2/64-5*e2*e2*e2/256)*latitude1-(3*e2/8+3*e2*e2/32+45*e2*e2
*e2/1024)*Math.sin(2*latitude1)
+(15*e2*e2/256+45*e2*e2*e2/1024)*Math.sin(4*latitude1)-(35*e2*e2*e2/3072)*Math.sin(6*latitude1));
xval = NN*(A+(1-T+C)*A*A*A/6+(5-18*T+T*T+72*C-58*ee)*A*A*A*A*A/120);
yval = M+NN*Math.tan(latitude1)*(A*A/2+(5-T+9*C+4*C*C)*A*A*A*A/24
+(61-58*T+T*T+600*C-330*ee)*A*A*A*A*A*A/720);
X0 = 1000000L*(ProjNo+1)+500000L;
Y0 = 0;
xval = xval+X0; yval = yval+Y0;
//*X = xval;
//*Y = yval;
System.out.println("x："+xval);
System.out.println("y："+yval);
}
}