JASPERREPORT生成报表

nt对象,和设置导出时的session */

public class ReportUtils {

private HttpServletReuest reuest;

private HttpServletResponse response;

private HttpSession session;

public ReportUtils(HttpServletReuest reuest, HttpServletResponse response) {

this.reuest = reuest;

this.session = reuest.getSession();

this.response = response;

}

/**

* 获得JasperPrint对象;自定义填充报表时的parameter和dataSource. 参数说明和动态表头的用法参考上一方法 */

public JasperPrintgetJasperPrint(String filePath, Map parameter,JRDataSourcedataSource) throws JRException { JasperReportjasperReport = null;

try {

jasperReport = (JasperReport) JRLoader.loadObject(filePath);

return JasperFillManager.fillReport(jasperReport, parameter,dataSource);

} catch (JRException e) {

e.printStackTrace();

}

return null;

}

/**

* 获得JasperPrint对象;自定义填充报表时的parameter和connection

*/

public JasperPrintgetJasperPrint(String filePath, Map parameter,Connection conn) throws JRException { JasperReportjasperReport = null;

try {

jasperReport = (JasperReport) JRLoader.loadObject(filePath);

return JasperFillManager.fillReport(jasperReport, parameter,conn);

} catch (JRException e) {

e.printStackTrace();

}

return null;

}

/**

* 通过传入List类型数据源获取JasperPrint实例

*/

public JasperPrintgetPrintWithBeanList(String filePath, Map parameter,List list) throws JRException { JRDataSourcedataSource = new JRBeanCollectionDataSource(list);

return getJasperPrint(filePath, parameter, dataSource);

}

/**

* 传入类型，获取输出器

*

* @paramdocType

* @return

*/

public JRAbstractExportergetJRExporter(DocTypedocType) {

JRAbstractExporter exporter = null;

switch (docType) {

case PDF:

exp