1. 前言
本篇博客将会分享一系列的 GeoServer 样式，通过这些样式预先在服务端完成数据渲染，让前端应用更便捷的加载数据服务。
2. 面矢量
示例数据：
{type: 'FeatureCollection',features: [{type: 'Feature',properties: {分类字段: '字段一'},geometry: {coordinates: [[[158, 44],[158, 40],[165, 40],[165, 44],[158, 44]]],type: 'Polygon'},id: 0},{type: 'Feature',properties: {分类字段: '字段二'},geometry: {coordinates: [[[158, 39],[158, 36],[165, 36],[165, 39],[158, 39]]],type: 'Polygon'}},{type: 'Feature',properties: {分类字段: '字段三'},geometry: {coordinates: [[[166, 44],[166, 41],[174, 41],[174, 44],[166, 44]]],type: 'Polygon'}},{type: 'Feature',properties: {分类字段: '字段四'},geometry: {coordinates: [[[166, 40],[166, 36],[174, 36],[174, 40],[166, 40]]],type: 'Polygon'}}]
}
2.1. 无描边单色填充
<?xml version="1.0" encoding="UTF-8"?>
<StyledLayerDescriptor xmlns="http://www.opengis.net/sld" xsi:schemaLocation="http://www.opengis.net/sld http://schemas.opengis.net/sld/1.1.0/StyledLayerDescriptor.xsd" version="1.1.0" xmlns:ogc="http://www.opengis.net/ogc" xmlns:se="http://www.opengis.net/se" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink"><NamedLayer><se:Name>面矢量</se:Name><UserStyle><se:Name>面矢量</se:Name><se:FeatureTypeStyle><se:Rule><se:Name>无描边单色填充</se:Name><se:PolygonSymbolizer><se:Fill><se:SvgParameter name="fill">#417656</se:SvgParameter></se:Fill></se:PolygonSymbolizer></se:Rule></se:FeatureTypeStyle></UserStyle></NamedLayer>
</StyledLayerDescriptor>
修改上述代码中的 #417656 即可改变配色。
2.2. 描边单色填充
<?xml version="1.0" encoding="UTF-8"?>
<StyledLayerDescriptor xmlns="http://www.opengis.net/sld" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:se="http://www.opengis.net/se" version="1.1.0" xmlns:ogc="http://www.opengis.net/ogc" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.opengis.net/sld http://schemas.opengis.net/sld/1.1.0/StyledLayerDescriptor.xsd"><NamedLayer><se:Name>面矢量</se:Name><UserStyle><se:Name>面矢量</se:Name><se:FeatureTypeStyle><se:Rule><se:Name>描边单色填充</se:Name><se:PolygonSymbolizer><se:Fill><se:SvgParameter name="fill">#417656</se:SvgParameter></se:Fill><se:Stroke><se:SvgParameter name="stroke">#000</se:SvgParameter><se:SvgParameter name="stroke-width">1</se:SvgParameter><se:SvgParameter name="stroke-linejoin">bevel</se:SvgParameter></se:Stroke></se:PolygonSymbolizer></se:Rule></se:FeatureTypeStyle></UserStyle></NamedLayer>
</StyledLayerDescriptor>
2.3. 根据属性字段分类填充
<?xml version="1.0" encoding="UTF-8"?>
<StyledLayerDescriptor xmlns="http://www.opengis.net/sld" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:se="http://www.opengis.net/se" version="1.1.0" xmlns:ogc="http://www.opengis.net/ogc" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.opengis.net/sld http://schemas.opengis.net/sld/1.1.0/StyledLayerDescriptor.xsd"><NamedLayer><se:Name>面矢量</se:Name><UserStyle><se:Name>面矢量</se:Name><se:FeatureTypeStyle><se:Rule><se:Name>字段一</se:Name><se:Description><se:Title>字段一</se:Title></se:Description><ogc:Filter xmlns:ogc="http://www.opengis.net/ogc"><ogc:PropertyIsEqualTo><ogc:PropertyName>分类字段</ogc:PropertyName><ogc:Literal>字段一</ogc:Literal></ogc:PropertyIsEqualTo></ogc:Filter><se:PolygonSymbolizer><se:Fill><se:SvgParameter name="fill">#f7fbff</se:SvgParameter></se:Fill></se:PolygonSymbolizer></se:Rule><se:Rule><se:Name>字段二</se:Name><se:Description><se:Title>字段二</se:Title></se:Description><ogc:Filter xmlns:ogc="http://www.opengis.net/ogc"><ogc:PropertyIsEqualTo><ogc:PropertyName>分类字段</ogc:PropertyName><ogc:Literal>字段二</ogc:Literal></ogc:PropertyIsEqualTo></ogc:Filter><se:PolygonSymbolizer><se:Fill><se:SvgParameter name="fill">#c8dcf0</se:SvgParameter></se:Fill></se:PolygonSymbolizer></se:Rule><se:Rule><se:Name>字段三</se:Name><se:Description><se:Title>字段三</se:Title></se:Description><ogc:Filter xmlns:ogc="http://www.opengis.net/ogc"><ogc:PropertyIsEqualTo><ogc:PropertyName>分类字段</ogc:PropertyName><ogc:Literal>字段三</ogc:Literal></ogc:PropertyIsEqualTo></ogc:Filter><se:PolygonSymbolizer><se:Fill><se:SvgParameter name="fill">#73b2d8</se:SvgParameter></se:Fill></se:PolygonSymbolizer></se:Rule><se:Rule><se:Name>字段四</se:Name><se:Description><se:Title>字段四</se:Title></se:Description><ogc:Filter xmlns:ogc="http://www.opengis.net/ogc"><ogc:PropertyIsEqualTo><ogc:PropertyName>分类字段</ogc:PropertyName><ogc:Literal>字段四</ogc:Literal></ogc:PropertyIsEqualTo></ogc:Filter><se:PolygonSymbolizer><se:Fill><se:SvgParameter name="fill">#2979b9</se:SvgParameter></se:Fill></se:PolygonSymbolizer></se:Rule></se:FeatureTypeStyle></UserStyle></NamedLayer>
</StyledLayerDescriptor>
