Java代碼導出Jasperreport

1，PDF

            //據據jasper文件生成JasperPrint對象  
            JasperPrint jasperPrint = JasperFillManager.fillReport("WebRoot//JasperFile//report9.jasper", new HashMap(),connection);  
            //生成我們的導出類JRPdfExporter 來自JRExporter  
            JRPdfExporter jrpdfExporter = new JRPdfExporter();  
            //設JasperPrint參數  
            jrpdfExporter.setParameter(JRExporterParameter.JASPER_PRINT,jasperPrint);  
            //設置輸入的PDF文件放在什麼地方  
            jrpdfExporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME, "WebRoot//JasperFile//exporter.pdf");  
            //輸出  
            jrpdfExporter.exportReport();  

或者

            File Pdf = new File(pdfFile);
		
            JasperExportManager.exportReportToPdfFile(jasperPrint, Pdf.getAbsolutePath());

2，XLS

            //Excel  JExcelApiExporter 來自JRExporter  
            JExcelApiExporter xlsExporter = new JExcelApiExporter();  
            xlsExporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);  
            xlsExporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME,"WebRoot//JasperFile//exporter.xls");  
            xlsExporter.exportReport();  

3，在WEB上面生成HTML的報表

    public class HtmlReportServlet extends HttpServlet {  
      
        private static final long serialVersionUID = 1L;  
      
        public void doGet(HttpServletRequest request, HttpServletResponse response)  
                throws ServletException, IOException {  
            try {  
                //連結數據庫  
                Class.forName("com.mysql.jdbc.Driver");  
                Connection connection = DriverManager.getConnection("jdbc:mysql://localhost/jasperreportdb","root","root");  
                //獲得Jasper輸入流  
                InputStream inputStream = getServletConfig().getServletContext().getResourceAsStream("JasperFile//report9.jasper");           
                //獲得JasperPrint對象  
                JasperPrint jasperPrint = JasperFillManager.fillReport(inputStream, new HashMap(),connection);  
                connection.close();  
                //設置格式  
                response.setContentType("text/html");  
                //獲得輸出流 ,這裏不能這樣response.getOutputStream()  
                PrintWriter printWriter = response.getWriter();  
                //創建JRHtmlExporter對象  
                JRHtmlExporter htmlExporter = new JRHtmlExporter();  
                //把jasperPrint到Session裏面(net.sf.jasperreports.j2ee.jasper_print)  
                request.getSession().setAttribute(ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE, jasperPrint);  
                //設值jasperPrint  
                htmlExporter.setParameter(JRExporterParameter.JASPER_PRINT,jasperPrint);  
                //設置輸出  
                htmlExporter.setParameter(JRExporterParameter.OUTPUT_WRITER,printWriter);  
                //設置圖片生成的Servlet(生成圖片就用這個ImageServlet,並且要在XML文件裏面配置 image?image=這個是Servlet的url-pattern)  
                htmlExporter.setParameter(JRHtmlExporterParameter.IMAGES_URI,"image?image=");  
                //導出  
                htmlExporter.exportReport();      
                printWriter.close();  
            } catch (SQLException e) {  
                e.printStackTrace();  
            } catch (ClassNotFoundException e) {  
                e.printStackTrace();  
            } catch (JRException e) {  
                e.printStackTrace();  
            }  
        }  
      
        public void doPost(HttpServletRequest request, HttpServletResponse response)  
                throws ServletException, IOException {  
            this.doGet(request, response);  
        }  
      
    }  

    <servlet>  
        <servlet-name>HtmlReportServlet</servlet-name>  
        <servlet-class>com.langhua.JasperReport.Servlet.HtmlReportServlet</servlet-class>  
      </servlet>  
      <servlet>  
      <servlet-name>ImageServlet</servlet-name>  
        <servlet-class>net.sf.jasperreports.j2ee.servlets.ImageServlet</servlet-class>  
      </servlet>  
    <!--url-pattern視你的情況而定，如果圖片出不來，你就看他的連結是什麼 -->  
    <servlet-mapping>  
        <servlet-name>ImageServlet</servlet-name>  
        <url-pattern>/servlet/image</url-pattern>  
      </servlet-mapping>  

4，JasperReport調用接口

	private static void callJasperReport(String jasperFileStr, String pdfFileStr) {
		Connection con = null;
		try {
			File jasperFile = new File(jasperFileStr);
			if (jasperFile.exists()) {
				HashMap<String, Object> params = getParamaterMap();

				Class.forName("oracle.jdbc.driver.OracleDriver");
				con = DriverManager.getConnection(jdbcUrl, dbUser, dbPassword);

				JasperPrint jasperPrint = null;
				if (con != null) {
					jasperPrint = JasperFillManager.fillReport(jasperFileStr,
							params, con);
				} else {
					jasperPrint = JasperFillManager.fillReport(jasperFileStr,
							params, new JREmptyDataSource());
				}
				//PDF
				//outputPDF(pdfFileStr, jasperPrint);
                                //xls
                                outputXLS(pdfFileStr, jasperPrint);
			} else {
				System.out.println("找不到jasper文件:" + jasperFileStr);
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (con != null) {
				try {
					con.close();
				} catch (SQLException e) {
					e.printStackTrace();
				}
			}
		}
	}

        private static HashMap<String, Object> getParamaterMap() {
            HashMap<String, Object> params = new HashMap<String, Object>();
            return params;
        }

5, Java Project中包含的Jar包可參考：

commons-beanutils-1.8.2.jar
commons-collections-3.2.1.jar
commons-digester-1.7.jar
commons-logging-1.1.jar
iText-2.1.7.jar
iTextAsian.jar
JasperReports-4.0.2.jar
ojdbc14.jar
org-netbeans-core.jar （缺少會報字體異常,Caused by: java.lang.ClassNotFoundException: org.netbeans.beaninfo.editors.ColorEditor$SuperColor）

jxl-2.6.10.jar (缺少會報： java.lang.NoClassDefFoundError: jxl/write/biff/RowsExceededException)