GetMap请求返回白色图像

Question

我只是遇到了一个问题，试图使用Mapserver显示我的地图与GetMap请求，但它返回一个白色的图像。我做了搜索，但我并没有找到答案： 我的地图文件：

MAP 
    IMAGETYPE  PNG 
    EXTENT  -21 20 1 36 
    SIZE   700 400 
    IMAGECOLOR  255 255 255 
     PROJECTION 
     "init=epsg:4326" 
    END 
    OUTPUTFORMAT 
    NAME png 
    MIMETYPE image/png 
    DRIVER GD/PNG 
    EXTENSION png 
    IMAGEMODE PC256 
    TRANSPARENT FALSE 
    END 
    WEB 
    METADATA 
    "wms_title" "Dans Layers and Stuff" 
    "wms_onlineresource" "http://localhost:81/cgi-bin/mapserv.exe?" 
    "wms_enable_request" "*" 
    "wms_srs" "EPSG:4326" 
    "wms_feature_info_mime_type" "text/html" 
    "wms_format" "image/png" 
    END 
END 
LAYER 

NAME map1 
TYPE polygon 
STATUS default 
CONNECTIONTYPE postgis 
CONNECTION "dbname=postgres host=localhost port=5432 user=postgres" 
DATA "geom from comgeo" 
    PROJECTION 
     "init=epsg:4326" 
    END 
    METADATA 
    "wms_title" "map1" 
    END 
PROCESSING "SCALE=AUTO" 
CLASS 
    STYLE 
    COLOR 232 232 232 
    OUTLINECOLOR 32 32 32 
END 
END 
END 
END 

这个我用我的请求，链接：

http://localhost:81/cgi-bin/mapserv.exe?map=/wamp64/www/wordpress/map1.map&version=1.3.0&request=GetMap&CRS=EPSG:4326&bbox=-21,20,1,36&width=760&height=360&layers=map1&styles=&FORMAT=image/png&TRANSPARENT=TRUE 

的BBOX值是否正确。谢谢

Answer 1

我没有解决probleme当我更换EPSG：4326与CRS：84和网址：

http://localhost:81/cgi-bin/mapserv.exe?map=/wamp64/www/wordpress/map1.map&request=GetMap&SERVICE=WMS&version=1.3.0&CRS=CRS:84&bbox=-21,20,1,36&width=700&height=400&layers=map1&styles=&FORMAT=image/png&TRANSPARENT=TRUE 

Answer 2

您的URL似乎缺少SERVICE = WMS参数。