WGS54坐标系中的经纬度坐标 124.793263,46.26888194 转换为54坐标系的Java代码示例

可以使用Proj4J库来进行坐标系转换，以下是Java代码示例：

import org.osgeo.proj4j.CoordinateReferenceSystem;
import org.osgeo.proj4j.ProjCoordinate;
import org.osgeo.proj4j.Proj4jException;
import org.osgeo.proj4j.io.Proj4FileReader;

public class WGS54To54Converter {

    private static final String WGS84_DEF = "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs";
    private static final String WGS54_DEF = "+proj=longlat +ellps=krass +towgs84=-15.8,84.1,-80.9,0,0,0,0 +no_defs";
    private static final String WGS54_ZONE_DEF = "+proj=tmerc +lat_0=0 +lon_0=126 +k=1 +x_0=500000 +y_0=0 +ellps=krass +towgs84=-15.8,84.1,-80.9,0,0,0,0 +units=m +no_defs";

    private static ProjCoordinate transform(ProjCoordinate src, CoordinateReferenceSystem srcCrs,
                                             CoordinateReferenceSystem destCrs) throws Proj4jException {
        ProjCoordinate dest = new ProjCoordinate();
        srcCrs.getProjection().transform(srcCrs, destCrs, src, dest);
        return dest;
    }

    public static void main(String[] args) {
        ProjCoordinate wgs84Coord = new ProjCoordinate(124.793263, 46.26888194);
        Proj4FileReader reader = new Proj4FileReader();
        try {
            CoordinateReferenceSystem wgs84Crs = reader.createFromParameters("WGS84", WGS84_DEF);
            CoordinateReferenceSystem wgs54Crs = reader.createFromParameters("WGS54", WGS54_DEF);
            CoordinateReferenceSystem wgs54ZoneCrs = reader.createFromParameters("WGS54 Zone 8", WGS54_ZONE_DEF);
            ProjCoordinate wgs54Coord = transform(wgs84Coord, wgs84Crs, wgs54Crs);
            ProjCoordinate wgs54ZoneCoord = transform(wgs54Coord, wgs54Crs, wgs54ZoneCrs);
            System.out.println(wgs54ZoneCoord.x + ", " + wgs54ZoneCoord.y);
        } catch (Proj4jException e) {
            e.printStackTrace();
        }
    }
}

其中，`WGS54_DEF` 和 `WGS54_ZONE_DEF` 分别表示 WGS54 和 54 坐标系的参数定义。需要注意的是，54 坐标系是分带的，所以定义时需要指定带号。此处默认为第8带，如果需要转换到其他带，需要修改 `WGS54_ZONE_DEF` 中的参数。