我在OpenLayers 3渲染Mapserver WMS图层时遇到了这个奇怪的问题。
当Chrome处于最大化模式时，网格不会显示。但是，当我切换到“窗口”视图或任何被调用的视图时，它可以完美地工作。
编辑我刚发现mapserver将以下错误写入日志文件： [Mon Apr 11 15:08:46 2016] .291000 msWMSLoadGetMapParams（）：WMS服务器错误。图像大小超出范围，WIDTH和HEIGHT必须介于1到2048像素之间。显然增加窗口大小也会导致WMS生成更大的png？我应该如何解决这个问题？ /编辑
这是Javascript代码：
var waterFeature, farmerFeature;
var waterStyle, farmerStyle;
var waterSource, farmerSource;
var layerOSM, layerBiomass, layerNDVI, layerFarmer, layerWater;
var map;
function initOpenLayers(){
waterFeature = new ol.Feature({
geometry: new ol.geom.Point([1, 15]),
name: 'Null Island',
population: 4000,
rainfall: 500
});
farmerFeature = new ol.Feature({
geometry: new ol.geom.Point([1, 16]),
//name: 'Null Island',
//population: 4000,
//rainfall: 500
});
waterStyle = new ol.style.Style({
image: new ol.style.Icon(/** @type {olx.style.IconOptions} */ ({
anchor: [0.5, 46],
anchorXUnits: 'fraction',
anchorYUnits: 'pixels',
src: 'images/waterIcon.png',
scale: 0.03
}))
});
farmerStyle = new ol.style.Style({
image: new ol.style.Icon(/** @type {olx.style.IconOptions} */ ({
anchor: [0.5, 46],
anchorXUnits: 'fraction',
anchorYUnits: 'pixels',
src: 'images/farmerIcon.png',
scale: 0.03
}))
});
waterFeature.setStyle(waterStyle);
farmerFeature.setStyle(farmerStyle);
waterSource = new ol.source.Vector({
features: [waterFeature]
});
farmerSource = new ol.source.Vector({
features: [farmerFeature]
});
layerOSM = new ol.layer.Tile({
source: new ol.source.OSM({
attributions: [
'All maps © <a href="http://www.opencyclemap.org/">OpenCycleMap</a>',
ol.source.OSM.ATTRIBUTION
],
url: 'http://{a-c}.tile.opencyclemap.org/cycle/{z}/{x}/{y}.png'
})
});
//layerOSM.setVisible(false);
layerBiomass = new ol.layer.Image({
//extent: [-13884991, 2870341, -7455066, 6338219],
//extent: [-18, -36, 52, 58],
source: new ol.source.ImageWMS({
projection: 'EPSG:3857',
//url: '/cgi-bin/mapserv.exe?map=c:/Websites/SWIMM/apps/STAMP/maps/STAMP/MALI.map&service=wms&version=1.1.1&request=GetMap&layers=biomass&styles=&width=400&height=400&format=image%2Fpng&srs=EPSG:3857&bbox=-18,-36,52,58',
url: '/cgi-bin/mapserv.exe?map=c:/Websites/SWIMM/apps/STAMP/maps/STAMP/MALI.map&service=wms&version=1.1.1&request=GetMap&layers=biomass&styles=&width=400&height=400&format=image%2Fpng&srs=EPSG:3857',
params: {'LAYERS': 'Biomass'},
serverType: 'mapserver'
})
});
layerNDVI = new ol.layer.Image({
//extent: [-13884991, 2870341, -7455066, 6338219],
//extent: [-18, -36, 52, 58],
source: new ol.source.ImageWMS({
projection: 'EPSG:3857',
//url: '/cgi-bin/mapserv.exe?map=c:/Websites/SWIMM/apps/STAMP/maps/STAMP/MALI.map&service=wms&version=1.1.1&request=GetMap&layers=biomass&styles=&width=400&height=400&format=image%2Fpng&srs=EPSG:3857&bbox=-18,-36,52,58',
url: '/cgi-bin/mapserv.exe?map=c:/Websites/SWIMM/apps/STAMP/maps/STAMP/MALI.map&service=wms&version=1.1.1&request=GetMap&layers=biomass&styles=&width=400&height=400&format=image%2Fpng&srs=EPSG:3857',
params: {'LAYERS': 'NDVI'},
serverType: 'mapserver'
})
});
layerFarmer = new ol.layer.Vector({
source: farmerSource
});
layerWater = new ol.layer.Vector({
source: waterSource
});
//initialize the raster visibilities. Start by default with the biomass raster
layerNDVI.setVisible(false);
layerBiomass.setVisible(true);
map = new ol.Map({
layers: [layerOSM, layerBiomass, layerNDVI, layerWater, layerFarmer],
target: 'map',
view: new ol.View({
//projection: 'EPSG:3857',
//center: [100000, 1000000],
projection: 'EPSG:4326',
center: [1,16],
zoom: 6
}),
controls: ol.control.defaults().extend([
new ol.control.ScaleLine()
])
});
//map.getView().setCenter([4,16]);
};
function toggleLayer() {
layerBiomass.setVisible(!layerBiomass.getVisible());
layerNDVI.setVisible(!layerBiomass.getVisible());
}
这是地图文件内容：
MAP
CONFIG "MS_ERRORFILE" "c:/temp/ms_error.txt"
IMAGETYPE PNG
OUTPUTFORMAT
NAME "png"
DRIVER AGG/PNG8
MIMETYPE "image/png"
EXTENSION "png"
TRANSPARENT ON
IMAGEMODE RGBA
FORMATOPTION "QUANTIZE_FORCE=on"
FORMATOPTION "QUANTIZE_COLORS=256"
FORMATOPTION "INTERLACE=OFF"
END
EXTENT -18 -36 52 38
PROJECTION
'init=epsg:3857'
END
WEB
IMAGEPATH "/Websites/SWIMM/tmp/"
IMAGEURL "/tmp/"
METADATA
'wms_enable_request' '*'
'wms_title' 'MS'
END
END
LAYER # MODIS raster layer begins here
NAME "NDVI"
DATA "./NDVI_2016022.img"
STATUS ON
TYPE RASTER
#PROCESSING "BANDS=1,2,3"
OFFSITE 255 0 0
METADATA
"wms_title" "NDVI"
"wms_srs" "EPSG:4326"
"wms_name" "NDVI"
"wms_server_version" "1.1.1"
"wms_format" "image/png"
"wms_onlineresource" "http://localhost/cgi-bin/mapserv.exe?map=c:/Websites/SWIMM/apps/STAMP/maps/STAMP/MALI.map&"
END
PROJECTION
"init=epsg:4326"
END
CLASS EXPRESSION ([pixel] >= 0 and [pixel] <= 10) STYLE COLOR 255 255 255 END NAME "Clouds" END
CLASS EXPRESSION ([pixel] >= 11 and [pixel] <= 17) STYLE COLOR 100 128 255 END NAME "Water" END
CLASS EXPRESSION ([pixel] >= 19 and [pixel] <= 19) STYLE COLOR 100 128 255 END NAME "Water" END
CLASS EXPRESSION ([pixel] >= 20 and [pixel] <= 89) STYLE COLOR 176 96 48 END NAME "< 0.00" END
CLASS EXPRESSION ([pixel] >= 90 and [pixel] <= 96) STYLE COLOR 255 255 0 END NAME "0.00-0.05" END
CLASS EXPRESSION ([pixel] >= 97 and [pixel] <= 102) STYLE COLOR 255 255 128 END NAME "0.05-0.10" END
CLASS EXPRESSION ([pixel] >= 103 and [pixel] <= 108) STYLE COLOR 255 255 128 END NAME "0.10-0.15" END
CLASS EXPRESSION ([pixel] >= 109 and [pixel] <= 129) STYLE COLOR 191 223 96 END NAME "0.15-0.20" END
CLASS EXPRESSION ([pixel] >= 130 and [pixel] <= 155) STYLE COLOR 128 192 64 END NAME "0.20-0.25" END
CLASS EXPRESSION ([pixel] >= 156 and [pixel] <= 181) STYLE COLOR 64 160 32 END NAME "0.25-0.30" END
CLASS EXPRESSION ([pixel] >= 182 and [pixel] <= 246) STYLE COLOR 0 128 0 END NAME "0.30-0.35" END
CLASS EXPRESSION ([pixel] >= 247 and [pixel] <= 253) STYLE COLOR 0 64 0 END NAME "0.35-0.40" END
CLASS EXPRESSION ([pixel] >= 254 and [pixel] <= 255) STYLE COLOR 255 255 255 END NAME "Missing" END
END # MODIS raster layer ends here
LAYER # MODIS raster layer begins here
NAME "BIOMASS"
DATA "./Biomass_2015.tif"
STATUS ON
TYPE RASTER
#PROCESSING "BANDS=1,2,3"
TRANSPARENCY 60
OFFSITE 255 0 0
METADATA
"wms_title" "BIOMASS"
"wms_srs" "EPSG:4326"
"wms_name" "BIOMASS"
"wms_server_version" "1.1.1"
"wms_format" "image/png"
"wms_onlineresource" "http://localhost/cgi-bin/mapserv.exe?map=c:/Websites/SWIMM/apps/STAMP/maps/STAMP/MALI.map&"
END
PROJECTION
#"proj=latlong"
#"ELLPS=WGS84"
#"datum=WGS84"
"init=epsg:4326"
END
CLASS EXPRESSION ([pixel] <= 0) STYLE COLOR 212 159 93 END NAME "0" END
CLASS EXPRESSION ([pixel] > 0 and [pixel] < 500) STYLE COLOR 233 205 137 END NAME "500" END
CLASS EXPRESSION ([pixel] >= 500 and [pixel] < 1000) STYLE COLOR 255 251 182 END NAME "1000" END
CLASS EXPRESSION ([pixel] >= 1000 and [pixel] < 5000) STYLE COLOR 199 237 124 END NAME "5000" END
CLASS EXPRESSION ([pixel] >= 5000) STYLE COLOR 143 223 67 END NAME "15000" END
END # MODIS raster layer ends here
END
答案 0 :(得分：3)
解决了它。
感谢bartvde。但具有讽刺意味的是，我必须添加 MAXSIZE到MAP文件。显然我的窗口大小略超过1024 px，这是默认情况下mapserver支持的最大值。通过设置MAXSIZE 2600，我能够解决问题。现在，地图也以最大窗口大小显示。