SLD 样式 之 labels with graphics

        最近在配地图的样式，遇到一个问题，就是像 的道路lables不知如何定义，在网上几番搜索发现lables中得

<TextSymbolizer>标签中也可以添加 <Graphic>标签。

具体sld样式如下：

 <TextSymbolizer>
<Label>
<ogc:PropertyName>name</ogc:PropertyName>
</Label>
<Font>
<CssParameter name="font-family">宋体</CssParameter>
<CssParameter name="font-size">12</CssParameter>
<CssParameter name="font-weight">bold</CssParameter>
</Font>
<LabelPlacement>
<PointPlacement>
<AnchorPoint>
<AnchorPointX>0.5</AnchorPointX>
<AnchorPointY>0.5</AnchorPointY>
</AnchorPoint>
</PointPlacement>
</LabelPlacement>
<Fill>
<CssParameter name="fill">#FFFFFF</CssParameter>
</Fill>
<Graphic>
<Mark>
<WellKnownName>square</WellKnownName>
<Fill>
<CssParameter name="fill">#59BF34</CssParameter>
</Fill>
<Stroke>
<CssParameter name="stroke">#2D6917</CssParameter>
</Stroke>
</Mark>
<Size>24</Size>
</Graphic>
<VendorOption name="graphic-resize">stretch</VendorOption>
<VendorOption name="graphic-margin">3</VendorOption>
<VendorOption name="group">true</VendorOption>
<VendorOption name="repeat">200</VendorOption>
<VendorOption name="maxDisplacement">50</VendorOption>
</TextSymbolizer>

 其中graphic-resize模式有如下三种: none,proportional, stretch

效果：                      

要实现或更漂亮的背景可以使用<ExternalGraphic>

<ExternalGraphic>
<OnlineResource xlink:type="simple"
xlink:href="http://......jpg" />
<Format>image/jpeg</Format>
</ExternalGraphic>

相应的在<LineSymbolizer> 和<PolygonSymbolizer>

也可以添加<Graphic>标签

<LineSymbolizer>
<Stroke>
<GraphicStroke>
<Graphic>
<Mark>
<WellKnownName>shape://vertline</WellKnownName>
<Stroke/>
</Mark><Size>7</Size>
</Graphic>
</GraphicStroke>
</Stroke>
</LineSymbolizer>

<PolygonSymbolizer>
<Fill>
<GraphicFill><Graphic>
<Mark>
<WellKnownName>shape://slash</WellKnownName>
<Stroke />
</Mark><Size>10</Size>
</Graphic></GraphicFill>
</Fill>
<Stroke/>
</PolygonSymbolizer>