JasperReport

• 坐标

<dependency>
    <groupId>net.sf.jasperreports</groupId>
    <artifactId>jasperreports</artifactId>
    <version>6.8.0</version>
</dependency>

• jasper原理
• 
• Exporter: 报表输出的管理类，用于管理输出报表的格式
• java类

//导出运营数据到pdf并提供客户端下载

@RequestMapping("/exportBusinessReport4PDF")

public Result exportBusinessReport4PDF(HttpServletRequest request,

HttpServletResponse response) {

try {

Map<String, Object> result = reportService.getBusinessReportData();

//取出返回结果数据，准备将报表数据写入到PDF文件中

List<Map> hotSetmeal = (List<Map>) result.get("hotSetmeal");

//动态获取模板文件绝对磁盘路径

String jrxmlPath =

request.getSession().getServletContext().getRealPath("template") +

File.separator + "health_business3.jrxml";

String jasperPath =

request.getSession().getServletContext().getRealPath("template") +

File.separator + "health_business3.jasper";

//编译模板

JasperCompileManager.compileReportToFile(jrxmlPath, jasperPath);

//填充数据---使用JavaBean数据源方式填充

JasperPrint jasperPrint =

JasperFillManager.fillReport(jasperPath,result,

new

JRBeanCollectionDataSource(hotSetmeal));

ServletOutputStream out = response.getOutputStream();

response.setContentType("application/pdf");

response.setHeader("content-Disposition",

"attachment;filename=report.pdf");

//输出文件

JasperExportManager.exportReportToPdfStream(jasperPrint,out);

return null;

} catch (Exception e) {

e.printStackTrace();

return new Result(false, MessageConstant.GET_BUSINESS_REPORT_FAIL);

}

}