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專(zhuān)題圖需要使用擴(kuò)展map的方式來(lái)實(shí)現(xiàn)，我把步驟說(shuō)一下，請(qǐng)您試一下！
1、后臺(tái)java代碼
package com.supermap.server.components;
import java.util.*;
import com.supermap.services.commontypes.*;
public class MyMap extends Map{
public MyMap(String mapName, String hostAddress, int port, HashMap stateManager) {
//調(diào)用父類(lèi)構(gòu)造函數(shù)
super(mapName, hostAddress, port, stateManager);
}
//重載父類(lèi)Map的execute方法
public boolean execute(String command, String parameter) {
//調(diào)用父類(lèi)的execute方法，并將父類(lèi)execute方法的返回值附給變量flag
boolean flag = super.execute(command, parameter);
//如果flag為false，說(shuō)明父類(lèi)對(duì)傳入的command命令不能處理，此時(shí)對(duì)父類(lèi)進(jìn)行擴(kuò)展，處理父類(lèi)execute方法不能處理的命令
if(!flag){
if (command.equals("makeXXX")) {//自己定義的名稱(chēng)
...//實(shí)例化專(zhuān)題圖對(duì)象代碼themeXXX
MapParam mapParam = super.getMapParam();
LayerCollection layerCollection = (LayerCollection) mapParam.layerCollection
.get(this.getMapName());
boolean success = false;
SuperMapLayerSetting superMapLayerSetting = null;
Layer newLayer = null;
if (layerCollection != null) {
Layer layer = (Layer) layerCollection.get("XX@XX");//要做專(zhuān)題圖的圖層名稱(chēng)格式是：數(shù)據(jù)集@數(shù)據(jù)源
if (layer != null && layer.isHavingValidDatasetInfo()) {
SuperMapLayerSetting layerSetting = (SuperMapLayerSetting) layer.getLayerSetting();
DatasetInfo datasetInfo = new DatasetInfo(layerSetting.datasetInfo);
if (datasetInfo != null) {
superMapLayerSetting = new SuperMapLayerSetting(themeXXX, layerSetting);
}
}
}
if (superMapLayerSetting != null) {
newLayer = new Layer(superMapLayerSetting);
newLayer.visible = true;
success = layerCollection.addLayer(true, newLayer);
if (success) {
ISession session = this.getSession();
session.setAttribute(XMLTool.getNodeText(parameter,"mapName")+ "_"+ mapParam.layerCollection.hashCode() + "", mapParam.layerCollection);
session.setAttribute(session.getId()+ this.getMapName(), this);
this.commandResultsList.put(command,mapParam.layerCollection.hashCode() + "");
} else {
System.out.println("添加專(zhuān)題圖層失敗");
}
}
}
return flag;
}
}
2、設(shè)置mapconfig.xml文件
<map mapClass="com.supermap.server.components.MyMap（上面代碼里面的包名+類(lèi)名）" mapId="MyMap（隨便起的）">
3、修改加載的mapname名稱(chēng)，改為上面的mapid
4、javascript代碼調(diào)用
function makeXXX()\\函數(shù)名任意
{
SuperMap.Committer.commitMapCmd("MyMap"（與mapname的名字相同）, "makeXXX（與自己定義的方法相同）", null,null（如果不需要傳遞參數(shù)兩個(gè)都為null）, onquerybysqlComplete（回調(diào)函數(shù)）);
}
function onquerybysqlComplete(e)
{
mapControl.getMap()._params.layersKey = e;
mapControl.refreshMapControl();
}
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