mapXtreme for java ÉèÖõØͼÖеã

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  myMap.setDeviceBounds(new DoubleRect(0, 0, m_mapWidth, m_mapHeight));
  m_mapWidth, m_mapHeight µÄÖµÒªÓëÏÂÃæµÄwidth,heightÒ»ÖÂ;
  <input id="map" type="image" src="/map/MapServlet" onclick="javascript:getPoint()" height="560" width="980">
  ΪʲôÕâÑùÄØ£¿²»ÖªµÀË­ÄܽâÊÍ£¬ÒÔÇ°¶¼Ã»½Ó´¥GISÕâ·½ÃæµÄ¶«Î÷ʲô¶¼²»ÖªµÀ£»·´ÕýÔÝʱÎÊÌâ½â¾öÁË£¬¿ÉÒÔ¼ÌÐøÍùÇ°×ßÁË……
  ÉèÖÃÖеãÒ²¾ÍÈçÏ´úÂ룺 DoublePoint newPoint = myMap.getCenter();
if ((reqParam = request.getParameter("ptx"))!=null) {
xStr = new Double(reqParam);
}
if ((reqParam = request.getParameter("pty"))!=null) {
yStr = new Double(reqParam);
}
if(xStr != null && yStr != null)
{
// Transform GIF coordinate to real world coordinate
DoublePoint screenPoint = new DoublePoint(xStr,yStr);
newPoint = myMap.transformScreenToNumeric(screenPoint);
}

myMap.setCenter(newPoint);
resImg(myMap,response); // Êä³öµØͼ
private void resImg(MapJ myMap, HttpServletResponse response) {

ServletOutputStream sos = null;
try
{
sos = response.getOutputStream();
myMap.setDeviceBounds(new DoubleRect(0, 0, m_mapWidth, m_mapHeight));
MapXtremeImageRenderer rr = new MapXtremeImageRenderer(m_mxtURL);
rr.render(ImageRequestComposer.create(myMap, NUM_OF_COLORS, BACKGROUND_COLOR, "image/gif"));
rr.toStream(sos);
rr.dispose();
}
catch(Exception e)
{
System.out.println("ʹÓÃÊý¾ÝÁ÷Êä³öͼƬʱÒì³£");
System.out.println(e.getMessage());
}
try {
if (sos != null) {
sos.close();
}
}catch(Exception e){
e.printStackTrace();
}
}