public File generateToFile(TargetFormat format, AccountInfo ai, HashMap<OptionsReportEnum, String> enumReportParamsValue, ServletContext sc) throws Exception {
    File outFile = AccountInfo.generateRndFileName(repFolder, this.getClass().getSimpleName(), format.getFileExt());
    
    IReportEngine engine = null;
    EngineConfig config;
    IReportRunnable design = null;
    try {
      config = new EngineConfig();
      config.setEngineHome("D:/ReportEngine");

      Platform.startup(config);
      IReportEngineFactory factory = (IReportEngineFactory)      Platform.createFactoryObject(IReportEngineFactory.EXTENSION_REPORT_ENGINE_FACTORY);
      engine = factory.createReportEngine(config);
      design = engine.openReportDesign("...");
    }
    catch (Exception e) {
      System.err.println("An error occured during the opening of the report file!");
      e.printStackTrace();
      System.exit(-1);
    }

    
    EXCELRenderOption options = new EXCELRenderOption();
    //Тут выставляем всякие опции

    task.setRenderOption(options);


    //Cross our fingers and hope everything is set
    try {

      //выставляем параметры для задачи
      setTask(task);
      //Запускаем задачу
      task.run();
    }
    catch (Exception e) {
      System.err.println("An error occured while running the report!");
      e.printStackTrace();
      System.exit(-1);
    }

    engine.destroy();
    return outFile;  
  }

import (Packages.....)
gettingData = new ClassName();
myrows = gettingData.getRows();
itr = myrows.iterator();