对于一个合法的 GetLegendGraphic 请求，服务器将根据请求参数 FORMAT 的格式返回响应结果。

对于一个非法的 GetLegendGraphic 请求，服务器将返回一个异常。

响应示例

请求示例 的结果如下：

{"layerLegends":[{"subLayerLegends":null,"layerType":"UGC","legends":[{"imageData":"iVBORw0KGgoAAAANSUhEUgAAAFAAAABQCAYAAACOEfKtAAAAzUlEQVR4Xu3QMQqAQBAEwfv/W40UQSNFQyO5TmuhNpiwx7YuF3POY7/Gd+Q/ASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBIwEjASMBozfg85jz3A3oSWK0eZ/PXQAAAABJRU5ErkJggg==","values":null,"width":80,"label":"Province_R@China#1","contentType":"image/png","url":"http://{ip}:{port}/iserver/output/resources/China/SYMBOLFILL/0_-1135193351.png","height":80}],"maxScale":3.4614550537849545E-6,"layerCaption":"Province_R@China#1","layerName":"Province_R@China#1","minScale":1.0817046855864374E-7}]}