ireport5.6使用table组件，如何用table显示javaBean数据源

1.从组件面板添加一个table组件到报表中。

2.设计table的字段头.

合并操作

1.

2.

删除你不需要的列

新增你的合并列

3.在报表Parameters里新增一个参数dets(java.util.List)

4.配置table数据集

a.重命令数据集(方便)

右键-》属性，即可修改.

b.添加一个Parameters

新增一个table1(net.sf.jasperreports.engine.JRDataSource)

c.手动配置代码，把dets参数传递给table1接收

<datasetParameter name="table1">
	<datasetParameterExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($P{dets})]]></datasetParameterExpression>
</datasetParameter>
<dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($P{dets})]]></dataSourceExpression>

d.添加Fields，显示的字段

5.报表设计完成

6.编写java代码以传递javaBean数据源的方式调用报表并显示

    /**
     * 打印报表 ckz
     *
     * @param billcode
     * @param req
     * @param resp
     * @throws Exception
     */
    @SuppressWarnings({ "rawtypes", "unchecked" })
    @Transactional(readOnly = true)
    public void doReport(String billcode,String exportType,HttpServletRequest request,HttpServletResponse response){
        try {
            String root_path = request.getSession ().getServletContext ().getRealPath ("");
            List list = binadjustBillMasDao.queryBinadjustbillDS (billcode);
            List datalist = binadjustBillDetDao.queryBinadjustbillDet (billcode);
            // 设置report参数
            Map params = new HashMap ();
            String username = (String) request.getSession ().getAttribute ("employeename");
            params.put ("username", username);
            params.put ("title", "物资调整单");
            params.put ("dets", datalist);
            params.put ("SUBREPORT_DIR", root_path + "\\webresource\\reports\\binadjust\\");
            params.put ("logo", root_path + IReportConstant.LOGOIMAGEURL);
            // 获取打印报表所需的数据
            String jaspername = "/binadjust/report＿binadjustbill_mas_cn.jasper";
            //注：list的size的大小，决定报表里的Detail显示几次，比如：size=2,那么加载后的报表就有2个table显示
            JasperHelper.exportmain (exportType, jaspername, list, params, "binadjust", request, response);
        } catch (Exception ex) {
            PrintWriter out = null;
            try {
                response.setCharacterEncoding ("UTF-8");
                out = response.getWriter ();
                out.write ("<h1 style='position: absolute;left: 50%;top: 50%;margin-left: -180px;margin-top: -10px;'>打印报表出错，请重试！</h1>");
            } catch (IOException e) {
                e.printStackTrace ();
            } finally {
                out.close ();
            }
            ex.printStackTrace ();
        }

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

    }

7、效果

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