J2EE使用ireport做导出PDF操作
首先，在lib中，加入一下jar：

jasperreports-4.5.0.jar //
groovy-all-1.7.5.jar
iText-2.1.7.jar //导出PDF
iTextAsian.jar //导出PDF，解决中文问题


使用ireport设计报表时，导出pdf，解决中文问题，需设置下面三个属性
Pdf font name ：STSong-Light //简体宋体
Pdf Embedded : 勾选
Pdf Encoding ： UniGB-UCS2-H (Chinese Simplified)

把生成的*.jasper文件复制到webroot下面的一个目录。

package net.bingosoft.ireport.servlet;import java.io.File;import java.io.IOException;import java.sql.SQLException;import java.util.HashMap;import java.util.Map;import javax.servlet.ServletContext;import javax.servlet.ServletException;import javax.servlet.ServletOutputStream;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import net.bingosoft.common.ObjectRegistry;import net.bingosoft.common.config.Config;import net.bingosoft.common.data.BaseDao;import net.sf.jasperreports.engine.JRException;import net.sf.jasperreports.engine.JasperFillManager;import net.sf.jasperreports.engine.JasperPrint;import net.sf.jasperreports.engine.JasperReport;import net.sf.jasperreports.engine.export.JRPdfExporter;import net.sf.jasperreports.engine.export.JRPdfExporterParameter;import net.sf.jasperreports.engine.util.FileBufferedOutputStream;import net.sf.jasperreports.engine.util.JRLoader;/** * ireport导出类 * @version 2012-02-29  * */public class IreportServlet extends HttpServlet{private static final long serialVersionUID = 5306946463388538105L;private Map<String, Object> params;@Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException {this.doPost(req, resp);}@Overrideprotected void doPost(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException {ServletContext servletContext = this.getServletConfig().getServletContext();//取文件路径标识String filePathFag = req.getParameter("FILE_PATH_FAG");//根据文件路径标识，从配置文件中，获取实际路径String filePath = Config.getString(filePathFag);File jsperFile = new File(servletContext.getRealPath(filePath));BaseDao baseDao = ObjectRegistry.getBaseDao();JasperPrint jasperPrint = null;params = new HashMap<String, Object>();try {//装载.jasper文件JasperReport jasperReport = (JasperReport)JRLoader.loadObject(jsperFile);//填充数据jasperPrint = JasperFillManager.fillReport(jasperReport, this.params, baseDao.getDatasource().getConnection());} catch (JRException e) {e.printStackTrace();} catch (SQLException e) {e.printStackTrace();}if(null != jasperPrint){FileBufferedOutputStream fbos = new FileBufferedOutputStream();JRPdfExporter exporter = new JRPdfExporter();exporter.setParameter(JRPdfExporterParameter.OUTPUT_STREAM, fbos);exporter.setParameter(JRPdfExporterParameter.JASPER_PRINT, jasperPrint);try {exporter.exportReport();if(fbos.size()>0){resp.setContentType("application/pdf");resp.addHeader("Content-Disposition","attachment; filename=\test.pdf");resp.setContentLength(fbos.size());ServletOutputStream outStream = resp.getOutputStream();try{fbos.writeData(outStream);fbos.dispose();outStream.flush();}finally{if(null != outStream){outStream.close();}}}} catch (JRException e) {e.printStackTrace();}finally{if(null !=fbos){fbos.close();fbos.dispose();}}}}}

上面是使用servlet。那么需要在web.xml中，配置自定义的servlet

  <servlet>  <servlet-class>net.bingosoft.ireport.servlet.IreportServlet</servlet-class>  <servlet-name>ireportServlet</servlet-name>  </servlet>    <servlet-mapping>  <servlet-name>ireportServlet</servlet-name>  <url-pattern>/ireportServlet</url-pattern>  </servlet-mapping>

导出效果图：