最简单的mapxtreme的servlet例子

import java.io.*;
import javax.servlet.http.*;
import java.awt.Color;
import javax.servlet.*;
import com.mapinfo.mapj.MapJ;
import com.mapinfo.mapxtreme.client.MapXtremeImageRenderer;
import com.mapinfo.util.*;
import com.mapinfo.xmlprot.mxtj.ImageRequestComposer;

public class SimpleServlet extends HttpServlet
{
  //输出图片的格式
  private static String mimeType = "image/gif";
  //地图定义文件的位置
  private static String m_mapPath = "D:\\MapXtreme8\\MapXtreme-4.8.2\\examples\\server\\data\\local\\world.mdf";
  //mapxtremeservlet的url
  private static String m_mxtURL = "http://localhost:8085/mapxtreme482/servlet/mapxtreme";;
  //实现HttpServlet的doGet方法
  public void doGet(HttpServletRequest request,HttpServletResponse response) throws IOException, ServletException
  {
    //设置ContentType
    response.setContentType(mimeType);
    //返回响应的输出流
    ServletOutputStream sos = response.getOutputStream();
    //创建MapJ对象
    MapJ m_mapj = new MapJ();
    //加载地图
    m_mapj.loadMapDefinition(m_mapPath);
    //设置地图大小
    m_mapj.setDeviceBounds(new DoubleRect(0,0,800,600));
    try
    {
      //创建图像请求器(包装mapj对象,图片的色位,底色,格式信息)
      ImageRequestComposer irc =ImageRequestComposer.create(m_mapj,256,Color.white,mimeType);
      //创建mxtj的图像渲染器
      MapXtremeImageRenderer renderer = new MapXtremeImageRenderer(m_mxtURL);
      //用渲染器渲染请求器
      renderer.render(irc);
      //渲染器输出图片流到输出流,客户端显示之
      renderer.toStream(sos);
      //释放渲染器对象
      renderer.dispose();
    }
    catch (Exception e)
    {
      System.out.println("Error");
      e.printStackTrace();
    }
  }
}