DynamicReports

try {

            response.setCharacterEncoding("UTF-8");

            response.setHeader("Content-disposition", "attachment;filename="

                    + URLEncoder.encode("文件名", "UTF-8") + ".xls");

            JRDataSource ds = new JRBeanCollectionDataSource(list);

            List<ColumnBuilder> columnList = new ArrayList<ColumnBuilder>();

            columnList.add(Columns

                    .column("任务单号", "TASKNUM", DataTypes.stringType())

                    .setHorizontalAlignment(HorizontalAlignment.CENTER)

                    .setWidth(150));

            columnList.add(Columns.column("任务标题", "TASKTITLE",

                    DataTypes.stringType()).setWidth(250));

            columnList.add(Columns.column("任务内容", "TASKCONTENT",

                    DataTypes.stringType()).setWidth(250));

            columnList.add(Columns.column("检查企业", "OBJECTNAME",

                    DataTypes.stringType()).setWidth(250));

            columnList.add(Columns.column("任务类型", "TASKTYPE",

                    DataTypes.stringType()));

            columnList.add(Columns.column("任务来源", "TASKSOURCENAME",

                    DataTypes.stringType()));

            columnList.add(Columns.column("开始时间", "STARTTIME",

                    DataTypes.stringType()).setWidth(120));

            columnList.add(Columns.column("截止时间", "ENDTIME",

                    DataTypes.stringType()).setWidth(120));

            columnList.add(Columns.column("紧急程度", "URGENCYNAME",

                    DataTypes.stringType()));

            columnList.add(Columns.column("发起人", "CREATERNAME",

                    DataTypes.stringType()));

            columnList.add(Columns.column("任务状态", "TASKSTATUS",

                    DataTypes.stringType()));

            DynamicreportsReport.toXlsReport(columnList, ds,

                    response.getOutputStream());

        } catch (Exception e) {

            e.printStackTrace();

        }

import static net.sf.dynamicreports.report.builder.DynamicReports.export;

import static net.sf.dynamicreports.report.builder.DynamicReports.report;

import java.io.OutputStream;

import java.util.List;

import net.sf.dynamicreports.jasper.builder.JasperReportBuilder;

import net.sf.dynamicreports.jasper.builder.export.JasperXlsExporterBuilder;

import net.sf.dynamicreports.jasper.constant.JasperProperty;

import net.sf.dynamicreports.report.builder.column.ColumnBuilder;

import net.sf.jasperreports.engine.JRDataSource;

public class DynamicreportsReport {

    public static void toXlsReport(List<ColumnBuilder> columnList,

            JRDataSource dataSource, OutputStream out) throws Exception {

        try {

            JasperXlsExporterBuilder xlsExporter = export.xlsExporter(out)

                    .setDetectCellType(true).setIgnorePageMargins(true)

                    .setWhitePageBackground(false)

                    .setRemoveEmptySpaceBetweenColumns(true);

            JasperReportBuilder exporterBuilder = report()

                    .addProperty(JasperProperty.EXPORT_XLS_FREEZE_ROW, "2")

                    .ignorePageWidth().ignorePagination();

            for (ColumnBuilder textColumnBuilder : columnList) {

                exporterBuilder = exporterBuilder.columns(textColumnBuilder);

            }

            exporterBuilder.setDataSource(dataSource).toXls(xlsExporter);

            // out.flush();

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}