I generate the sld file from Qgis and upload it to the geoserver. My sld file looks like following,

<?xml version="1.0" encoding="UTF-8"?>
<StyledLayerDescriptor xmlns="http://www.opengis.net/sld" version="1.0.0" xmlns:sld="http://www.opengis.net/sld" xmlns:gml="http://www.opengis.net/gml" xmlns:ogc="http://www.opengis.net/ogc">
            <sld:ColorMap type="values">
              <sld:ColorMapEntry quantity="1" label="Low: PGA < 0.015, MMI < 5" color="#00b04f"/>
              <sld:ColorMapEntry quantity="2" label="Moderate: PGA 0.015 - 0.047, MMI 6 - 7" color="#ffbf00"/>
              <sld:ColorMapEntry quantity="3" label="High: PGA 0.047 - 0.149, MMI 8 - 9" color="#ff0000"/>
              <sld:ColorMapEntry quantity="4" label="Very high: PGA > 0.149, MMI > 10" color="#a80000"/>

The layer working fine until I updated my sld file. While I tried to validate this sld, it popup with following error,

org.xml.sax.SAXParseException; lineNumber: 18; columnNumber: 63; The value of attribute "label" associated with an element type "sld:ColorMapEntry" must not contain the '<' character.

I know this mean I can't use "<" and ">" sign in sld:ColorMapEntry. But is there any possible way to add these symbol in label?

1 Answer 1


The problem is the < and > can't appear inside an XML element as they are confused with starting and ending a tag. So, you must "encode" them as XML entities in this case < is &lt; and > is &gt;.

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