dhtmlexport2servlet.java

杰表服务器 部分源码 杰创网络报表(简称“杰表”)是一款国产的网络报表开发工具

package servlet;

import com.jatools.core.*;
import com.jatools.core.ZReportServer;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import java.util.*;


/**
 * DOCUMENT ME!
 *
 * @author $author$
 * @version $Revision$
 */
public class DhtmlExport2Servlet extends HttpServlet {
    static final private String CONTENT_TYPE = "text/html; charset=GBK";

    //Process the HTTP Get request
    public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
        ZReportJob job = null;

        try {
            job = ZReportServer.createJob(new FileInputStream("templates/chart.xml"));
        } catch (Exception ex) {
            throw new ServletException(ex);
        }

        response.setContentType("text/html;charset=UTF-8");

        PrintWriter out = response.getWriter();

        try {
            job.printAsDHTML(new ImageByte(),out);
        } catch (Exception ex) {
            throw new ServletException(ex);
        }
    }
}
class ImageByte implements ZByteArrayRegister{

  private HashMap images;
  private int lastid=0;

  public ImageByte() {
    images=new HashMap();
  }

  public HashMap getImages()
  {
    return images;
  }


  public String registerStream(byte[] bytes) {
     images.put(String.valueOf(lastid),bytes);

     String url = "image?image=" + lastid;
     lastid++;
     return url;
  }
}