Gis Openlayers3:使用Geoserver/Geowebcache作为后端时，pixelratio=3的平铺网格不正确
我正在使用Openlayers3和geoserver/geowebcache作为后端开发一个小型网络地图 我的目标是支持pixelratio=1、pixelratio=2和pixelratio=3的浏览器/显示器 为此，我在geoserver后端3个网格集中定义了大小为256x256、512x512和768x768的分幅。 我假设：Gis Openlayers3:使用Geoserver/Geowebcache作为后端时，pixelratio=3的平铺网格不正确,gis,openlayers-3,geoserver,wms,Gis,Openlayers 3,Geoserver,Wms,我正在使用Openlayers3和geoserver/geowebcache作为后端开发一个小型网络地图 我的目标是支持pixelratio=1、pixelratio=2和pixelratio=3的浏览器/显示器 为此，我在geoserver后端3个网格集中定义了大小为256x256、512x512和768x768的分幅。 我假设： pixelratio=1需要具有大小为256x256的平铺的网格集 pixelratio=2需要一个分片大小为512x512的网格集 pixelratio=3需要
- pixelratio=1需要具有大小为256x256的平铺的网格集
- pixelratio=2需要一个分片大小为512x512的网格集
- pixelratio=3需要一个分片大小为768x768的网格集
geowebcache-cache-result:MISS
geowebcache-miss-reason:request does not align to grid(s) 'grid_512' 'grid_768' 'grid_256'
http://localhost:8082/wms?SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&FORMAT=image%2Fpng&TRANSPARENT=false&layers=mfn_mwb17%3Amfn_mwb17_0_basemap&TILED=true&WIDTH=768&HEIGHT=768&SRS=EPSG%3A32632&STYLES=&FORMAT_OPTIONS=dpi%3A270&BBOX=536964.8438079988%2C5280880.182948656%2C537609.9638079988%2C5281525.3029486565
<html>
<head>
<title>WMS Tiles</title>
<link rel="stylesheet" href="https://openlayers.org/en/v3.19.1/css/ol.css" type="text/css">
<!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
<script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
<script src="https://openlayers.org/en/v3.19.1/build/ol.js"></script>
</head>
<body>
<div id="map" class="map"></div>
<script>
console.log("DOMContentLoaded");
try {
var config = {
"bounds": {
"left": 536319.7238079988,
"bottom": 5278944.822948656,
"right": 540150.3790103362,
"top": 5282223.663765706
}
};
var bounds = [config.bounds.left, config.bounds.bottom, config.bounds.right, config.bounds.top];
var resolutions = [2.5199999999999996,
1.2599999999999998,
0.6299999999999999,
0.31499999999999995,
0.15749999999999997,
0.07874999999999999,
0.03937499999999999
];
var projection = new ol.proj.Projection({
code: 'EPSG:32632'
});
var params = {
'VERSION': '1.1.1',
'layers': "mfn_mwb17:mfn_mwb17_0_basemap",
'TILED': true,
'TRANSPARENT': false
};
var tileGrid = new ol.tilegrid.TileGrid({
extent: bounds,
resolutions: resolutions,
origin: [config.bounds.left, config.bounds.bottom],
tileSize: [256, 256]
});
var view = new ol.View({
zoom: 0,
center: ol.extent.getCenter(bounds),
projection: projection,
resolutions: resolutions
});
var map = new ol.Map({
controls: ol.control.defaults(
{
rotate: false,
attributionOptions: {
collapsible: false
}
}
),
view: view,
layers: [
new ol.layer.Tile({
source: new ol.source.TileWMS({
url: "http://localhost:8082/wms",
params: params,
tileGrid: tileGrid,
serverType: 'geoserver'
}),
projection: projection,
extend: bounds
})
],
target: 'map'
});
console.log("no error");
} catch (error) {
console.log("error");
console.log(error);
}
</script>
</body>
</html>
WMS瓷砖
log（“DOMContentLoaded”）；
试一试{
变量配置={
“界限”：{
“左”：536319.7238079988，
“底部”：5278944.822948656，
“右”：540150.3790103362，
“顶部”：5282223.663765706
}
};
var bounds=[config.bounds.left，config.bounds.bottom，config.bounds.right，config.bounds.top]；
var分辨率=[2.519999996，
1.2599999999999998,
0.6299999999999999,
0.31499999999999995,
0.15749999999999997,
0.07874999999999999,
0.03937499999999999
];
var投影=新的ol.proj.projection({
代码：“EPSG:32632”
});
变量参数={
“版本”：“1.1.1”，
“图层”：“最惠国待遇mwb17：最惠国待遇mwb17\U 0\U底图”，
“平铺”：正确，
“透明”：false
};
var tileGrid=新的ol.tileGrid.tileGrid({
范围：界限，
决议：决议，
原点：[config.bounds.left，config.bounds.bottom]，
瓷砖尺寸：[256，256]
});
变量视图=新的ol.view({
缩放：0，
中心：ol.extent.getCenter（边界），
投影：投影，
决议：决议
});
var map=新ol.map({
控件：ol.control.defaults(
{
旋转：假，
属性选项：{
可折叠：错误
}
}
),
视图：视图，
图层：[
新ol.layer.Tile({
来源：新ol.source.TileWMS({
url:“http://localhost:8082/wms",
params:params，
tileGrid:tileGrid，
服务器类型：“地理服务器”
}),
投影：投影，
扩展：边界
})
],
目标：“地图”
});
console.log（“无错误”）；
}捕获（错误）{
控制台日志（“错误”）；
console.log（错误）；
}
ol.source.TileWMSol.layer.Tileol.layer.Tile范围扩展ol.source.TileWMSserverType:“geoserver”tilePixelRatioserverTypetilePixelRatiovar tilePixelRatio = 1;
if (ol.has.DEVICE_PIXEL_RATIO > 2.5) {
tilePixelRatio = 3;
} else if (ol.has.DEVICE_PIXEL_RATIO > 1.5) {
tilePixelRatio = 2;
}
var layerName = 'mfn_mwb17:mfn_mwb17_0_basemap';
var gridset = 'grid_' + (tilePixelRatio * 256);
var layer = new ol.layer.Tile({
extent: bounds,
source: new ol.source.XYZ({
projection: 'EPSG:32632',
tileGrid: tileGrid,
tilePixelRatio: tilePixelRatio,
url: '/geoserver/gwc/service/tms/1.0.0/' + layerName +
'@' + gridset + '@png/{z}/{x}/{-y}.png'
})
});
var tilePixelRatio = 1;
if (ol.has.DEVICE_PIXEL_RATIO > 2.5) {
tilePixelRatio = 3;
} else if (ol.has.DEVICE_PIXEL_RATIO > 1.5) {
tilePixelRatio = 2;
}
var layerName = 'mfn_mwb17:mfn_mwb17_0_basemap';
var gridset = 'grid_' + (tilePixelRatio * 256);
var layer = new ol.layer.Tile({
extent: bounds,
source: new ol.source.XYZ({
projection: 'EPSG:32632',
tileGrid: tileGrid,
tilePixelRatio: tilePixelRatio,
url: '/geoserver/gwc/service/tms/1.0.0/' + layerName +
'@' + gridset + '@png/{z}/{x}/{-y}.png'
})
});
以上假设您的网格集命名为
grid\u 256grid\u 512grid\u 768tilePixelRatio:tilePixelRatio