[1] geotools-2.7.x/sample_gpx_file_02.gpx at master · boundlessgeo/geotools-2.7.x ( 版) https://github.com/boundlessgeo/geotools-2.7.x/blob/master/modules/unsupported/gpx2/test/org/geotools/gpx2/resources/sample_gpx_file_02.gpx

<trk>

<name>28-OCT-08</name>

<type>GPS Tracklog</type>

<extensions>

<label xmlns="http://www.topografix.com/GPX/gpx_overlay/0/3">

<label_text>28-OCT-08</label_text>

</label>

</extensions>

[2] geotools-2.7.x/sample_gpx_file_01.gpx at master · boundlessgeo/geotools-2.7.x ( 版) https://github.com/boundlessgeo/geotools-2.7.x/blob/master/modules/unsupported/gpx2/test/org/geotools/gpx2/resources/sample_gpx_file_01.gpx

<extensions>

<label xmlns="http://www.topografix.com/GPX/gpx_overlay/0/3">

<label_text>040</label_text>

</label>

</extensions>

</wpt>