发现是mapserv改为mapserv.exe就行了？不过又出现了一个错误

额，原来是把目录写错了，改为E:/ms4w/apps/workshop-5.4/itasca.map。但是这次又出现了一个错误

loadLayer(): Unknown identifier. Annotation Layers have been removed. To obtain same functionality, use a layer with label->styles and no class->styles
LoadLayer（）：未知标识符。注释层已被删除。要获得相同的功能，请使用带有label->styles和no class->styles的图层。

我的map的文件

LAYER
NAME mcd90py2
GROUP cities
TYPE POLYGON
DATA mcd90py2
STATUS OFF
CLASSITEM city_name
CLASS
NAME "Cities & Towns"
EXPRESSION /./
STYLE
COLOR 255 225 90
END
TEMPLATE "templates/mcd90py2.html"
END
HEADER "templates/mcd90py2_header.html"
FOOTER "templates/mcd90py2_footer.html"
DUMP TRUE # allow GML export
METADATA
WMS_TITLE "Minor Civil Divisions"
WMS_ABSTRACT "Minor civil divisions for Itasca County (boundaries only)."
WMS_SRS "EPSG:26915"
END
END

LAYER
NAME airports
TYPE POINT
DATA airports
STATUS OFF
CLASS
NAME 'Airports'
STYLE
COLOR 128 255 164
SYMBOL 'circle'
SIZE 7
END
TEMPLATE "templates/airports.html"
END
HEADER "templates/airports_header.html"
FOOTER "templates/airports_footer.html"
TOLERANCE 5
METADATA
WMS_TITLE "Airports"
WMS_ABSTRACT "Airport runways for Itasca County."
WMS_SRS "EPSG:26915"
END
END

LAYER
NAME mcd90py2_anno
GROUP cities
TYPE ANNOTATION
DATA mcd90py2
STATUS OFF
LABELITEM "city_name"
CLASSITEM "city_name"
LABELMAXSCALE 500000
CLASS
EXPRESSION /./
LABEL
COLOR 0 0 0
SHADOWCOLOR 218 218 218
SHADOWSIZE 2 2
TYPE BITMAP
SIZE MEDIUM
POSITION CC
PARTIALS FALSE
BUFFER 2
END
END
METADATA
WMS_TITLE "Minor Civil Divisions"
WMS_ABSTRACT "Minor civil divisions for Itasca County (annotation only)."
WMS_SRS "EPSG:26915"
END
END

一共12个图层。

那么mapserv.exe在加载layer时为什么会找不到annotation layer呢？为什么一定要删除style类型（To obtain same functionality, use a layer with label->styles and no class->styles）可以使用label -> styles而不可以使用class->styles，这两者是什么区别？

当我把CLASS都改成LABEL之后，却出现语法错误

这是第一个就出错了，看来不是直接替换这么简单