Eclipse birt页面显示生成的图片代码

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import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.List;
import javax.servlet.ServletContext;
import org.apache.struts2.ServletActionContext;
import org.eclipse.birt.core.framework.IPlatformContext;
import org.eclipse.birt.core.framework.Platform;
import org.eclipse.birt.core.framework.PlatformServletContext;
import org.eclipse.birt.report.engine.api.EngineConfig;
import org.eclipse.birt.report.engine.api.EngineConstants;
import org.eclipse.birt.report.engine.api.EngineException;
import org.eclipse.birt.report.engine.api.HTMLActionHandler;
import org.eclipse.birt.report.engine.api.HTMLEmitterConfig;
import org.eclipse.birt.report.engine.api.HTMLRenderContext;
import org.eclipse.birt.report.engine.api.HTMLRenderOption;
import org.eclipse.birt.report.engine.api.HTMLServerImageHandler;
import org.eclipse.birt.report.engine.api.IReportEngine;
import org.eclipse.birt.report.engine.api.IReportEngineFactory;
import org.eclipse.birt.report.engine.api.IReportRunnable;
import org.eclipse.birt.report.engine.api.IRunAndRenderTask;
import org.springframework.util.Assert;
import com.chinaunicom.zj.cring.admin.dao.ManageHotsearchDao;
import com.chinaunicom.zj.cring.core.support.AbstractAction;
import com.chinaunicom.zj.cring.pojo.Hotsearch;
public class VoteReportAction extends AbstractAction{
private static final long serialVersionUID = 1L;
private static final String REPORT_DESESIGN_FILE = "/db/new_report_1.rptdesign";
private static final String REPORT_IMAGE_DIR = "/db/images";
/**
     * 在页面上显示的图片链接,是与请求url的相对路径
     */
    private String baseImageUrl = "/db/images";   
private ManageHotsearchDao manageHotsearchDao;

private IReportEngine engine;
List resultList;

@SuppressWarnings("unchecked")
public String execute() throws Exception{
  resultList = manageHotsearchDao.getAll();
  OutputStream outputStream = ServletActionContext.getResponse().getOutputStream();
  EngineConfig config = new EngineConfig();
  ServletContext sc = ServletActionContext.getServletContext();
  IPlatformContext context = new PlatformServletContext( sc );
  config.setEngineHome("");
  config.setPlatformContext( context );
  
  //删除生成的临时图片
  String filestr=ServletActionContext.getServletContext().getRealPath(baseImageUrl);
  File filedir=new File(filestr);
  if(filedir.isDirectory())
  {
   File[] tempfiles=filedir.listFiles();
   
   for(int i=0;i


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