Openplayers简单发布Mapserver（ＷＭＳ）服务

代码如下：

function init()
       {
         var map = new OpenLayers.Map(
                  {
                     div: "map",
                    //下面很重要，如果不设置，每个图片都按照BBOX:-180,-90,90-270这样的经纬度去找，对于用meters来做的mapfile是找不到图的，白屏
                     maxExtent: new OpenLayers.Bounds(-180, -90, 180, 90),
                     maxResolution: "auto",
                     units: \'METERS\',
                     projection: "EPSG:3978"
                   }
             );
          var layer = new OpenLayers.Layer.WMS(
              "OpenPlayer WMS",
              "http://localhost/cgi-bin/mapserv.exe?",
              {layers: \'lake\',  map:\'D:/ms4w/Apache/cgi-bin/wms.map\', IMAGETYPE:\'PNG\'},
              {
                    reproject: false,
                    \'numZoomLevels\': 20,
                    gutter: 15,
                    buffer: 0
               }

          );
          map.addLayer(layer);
          //缩放级别，以maxExtent的左上角为基点缩放
          map.setCenter(new OpenLayers.LonLat(0, 0), 15);  
          map.addControl( new OpenLayers.Control.LayerSwitcher() );
         }