I have a shapefile with projection WGS84, when I added it to GeoServer, the Native SRS is Unknown
and for Declared SRS I wrote EPSG:4326. However, the shapefile became a mess if opened in Layer Preview
Then I changed Declared SRS to EPSG:2400 (Swedish RT90), the shapefile can be shown in Layer Preview.
What could be the problem?
And if I have Google Maps as tile map, how can I overlay this shapefile on it with OpenLayers element? What's the difference between e.g. OpenLayers.xxx and ol.xxx?