JasperReport串联仅打印第一个报告

import net.sf.jasperreports.engine.*;
import net.sf.jasperreports.engine.export.JRPdfExporter;

public class ReportGenerator {
    public static void main(String[] args) {
        try {
            // 加载报表模板
            JasperReport jasperReport = JasperCompileManager.compileReport("report_template.jrxml");

            // 设置报表参数
            JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, null, new JREmptyDataSource());

            // 设置打印策略，仅打印第一个报告
            jasperPrint.setPageRange("1");

            // 导出报表为PDF文件
            JRPdfExporter exporter = new JRPdfExporter();
            exporter.setExporterInput(new SimpleExporterInput(jasperPrint));
            exporter.setExporterOutput(new SimpleOutputStreamExporterOutput("output.pdf"));
            exporter.exportReport();
        } catch (JRException e) {
            e.printStackTrace();
        }
    }
}