ireport導出excel,html.pdf等格式完整實例

本例報表中的數據是List傳入的值，不是通過報表執行查詢的數據。本例是基於struts使用的。利用ireport工具導出excel

 

一、導入irport相關的jar包導入

common-digester-1[1].7.jar

commons-javaflow-200060411.jar

itext-1.3.jar

iTextAsian.jar

jasperreports-1.2.4.jar

jcommon-1.0.16.jar

jfreechart-1.0.13.jar

poi-2.0-final-20010126.jar

需要注意的是：jar包的版本一定要注意，如果本版不同的話，很容易引起錯誤的。

 二、在ireport中畫出，需要顯示的字段樣式 （網上有很多這樣的例子，這裏就不說怎麼製作ireport文件了）如下是我製作的文件樣式，編譯生成.jasper我們需要的這個xx.jasper文件。

三、①當頁面點擊“導出”時，會執行action中的exportexcel （）方法。（需要注意的是如果頁面用的是ajax請求action那麼，不一定能夠出現下載頁面，但是我沒有驗證，因爲以前我做過的是poi導出excel時用ajax請求action時不行，所以最好不要用ajax請求action）

	/**
	*導出數據
	* @param "excel"導出文件文件格式
	* @param "intentpro2.jasper" ireport編譯生成的.jasper文件
	* @param alllist  需要導出的數據的list值
	* @param fianceInfo  當導出是默認的文件名稱
	* @return String
	*/
	public String exportexcel(){
			JasperHelper.exportmain("excel", "intentpro2.jasper", alllist, "fianceInfo");
		return SUCCESS;
	}

②JasperHelper類

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;
import org.apache.struts2.ServletActionContext;
import org.jfree.util.Log;

import com.opensymphony.xwork2.ActionContext;
import com.qqw.crm.common.dao.impl.BaseDaoImpl;

import net.sf.jasperreports.engine.JRDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRExporter;
import net.sf.jasperreports.engine.JRExporterParameter;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.base.JRBaseReport;
import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;
import net.sf.jasperreports.engine.export.JRHtmlExporter;
import net.sf.jasperreports.engine.export.JRHtmlExporterParameter;
import net.sf.jasperreports.engine.export.JRRtfExporter;
import net.sf.jasperreports.engine.export.JRXlsExporter;
import net.sf.jasperreports.engine.export.JRXlsExporterParameter;
import net.sf.jasperreports.engine.util.JRLoader;

public class JasperHelper {
	private static Logger logger = Logger.getLogger(JasperHelper.class);
	   public static final String PRINT_TYPE = "print";
	   public static final String PDF_TYPE = "pdf";
	   public static final String EXCEL_TYPE = "excel";
	   public static final String HTML_TYPE = "html";
	   public static final String WORD_TYPE = "word";
	 public static void prepareReport(JasperReport jasperReport, String type) {
		 logger.debug("The method======= prepareReport() start.......................");
		    /*
		     * 如果導出的是excel，則需要去掉周圍的margin
		     */
		    if ("excel".equals(type))
		     try {
		      Field margin = JRBaseReport.class
		        .getDeclaredField("leftMargin");
		      margin.setAccessible(true);
		      margin.setInt(jasperReport, 0);
		      margin = JRBaseReport.class.getDeclaredField("topMargin");
		      margin.setAccessible(true);
		      margin.setInt(jasperReport, 0);
		      margin = JRBaseReport.class.getDeclaredField("bottomMargin");
		      margin.setAccessible(true);
		      margin.setInt(jasperReport, 0);
		      Field pageHeight = JRBaseReport.class
		        .getDeclaredField("pageHeight");
		      pageHeight.setAccessible(true);
		      pageHeight.setInt(jasperReport, 2147483647);
		     } catch (Exception exception) {
		     }
		   }

		   /**
		    * 導出excel
		    */
		   public static void exportExcel(JasperPrint jasperPrint,String defaultFilename,
		     HttpServletRequest request, HttpServletResponse response) throws IOException, JRException {
			   logger.debug("執行導出excel   The method======= exportExcel() start.......................");
		     /*
		      * 設置頭信息
		      */
		     response.setContentType("application/vnd.ms-excel");
		     String defaultname=null;
		     if(defaultFilename.trim()!=null&&defaultFilename!=null){
		    	defaultname=defaultFilename+".xls";
		     }else{
		    	defaultname="export.xls";
		     }
		     String fileName = new String(defaultname.getBytes("gbk"), "utf-8");
		     response.setHeader("Content-disposition", "attachment; filename="
		       + fileName);
		     ServletOutputStream ouputStream = response.getOutputStream();
		     JRXlsExporter exporter = new JRXlsExporter();
		     exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
		     exporter.setParameter(JRExporterParameter.OUTPUT_STREAM,ouputStream);
		     exporter.setParameter(JRXlsExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_ROWS,Boolean.TRUE);
		     exporter.setParameter(JRXlsExporterParameter.IS_ONE_PAGE_PER_SHEET,Boolean.FALSE);
		     exporter.setParameter(JRXlsExporterParameter.IS_WHITE_PAGE_BACKGROUND,Boolean.FALSE);
		     exporter.exportReport();
		     ouputStream.flush();
		     ouputStream.close();
		   }

		   /**
		    * 導出pdf，注意此處中文問題， 

		    * 這裏應該詳細說：主要在ireport裏變下就行了。看圖

		    * 1）在ireport的classpath中加入iTextAsian.jar
		    * 2）在ireport畫jrxml時，看ireport最左邊有個屬性欄。

		    * 下邊的設置就在點字段的屬性後出現。
		    * pdf font name ：STSong-Light ，pdf encoding ：UniGB-UCS2-H
		    */
		   private static void exportPdf(JasperPrint jasperPrint,String defaultFilename,
		     HttpServletRequest request, HttpServletResponse response) throws IOException, JRException {
		     response.setContentType("application/pdf");
		     String defaultname=null;
		     if(defaultFilename.trim()!=null&&defaultFilename!=null){
		    	defaultname=defaultFilename+".pdf";
		     }else{
		    	defaultname="export.pdf";
		     }
		     String fileName = new String(defaultname.getBytes("GBK"), "ISO8859_1");
		     response.setHeader("Content-disposition", "attachment; filename="
		       + fileName);
		     ServletOutputStream ouputStream = response.getOutputStream();
		     JasperExportManager.exportReportToPdfStream(jasperPrint,
		       ouputStream);
		     ouputStream.flush();
		     ouputStream.close();
		   }

		   /**
		    * 導出html
		    */
		   private static void exportHtml(JasperPrint jasperPrint,String defaultFilename,
		     HttpServletRequest request, HttpServletResponse response) throws IOException, JRException {
		     response.setContentType("text/html");
		     ServletOutputStream ouputStream = response.getOutputStream();
		     JRHtmlExporter exporter = new JRHtmlExporter();
		     exporter.setParameter(
		       JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN,
		       Boolean.FALSE);
		     exporter
		       .setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
		     exporter.setParameter(JRExporterParameter.CHARACTER_ENCODING,
		       "UTF-8");
		     exporter.setParameter(JRExporterParameter.OUTPUT_STREAM,
		       ouputStream);

		     exporter.exportReport();

		     ouputStream.flush();
		     ouputStream.close();
		   }

		   /**
		    * 導出word
		    */
		   private static void exportWord(JasperPrint jasperPrint,String defaultFilename,
		     HttpServletRequest request, HttpServletResponse response)
		     throws JRException, IOException {
		    response.setContentType("application/msword;charset=utf-8");
		    String defaultname=null;
		     if(defaultFilename.trim()!=null&&defaultFilename!=null){
		    	defaultname=defaultFilename+".doc";
		     }else{
		    	defaultname="export.doc";
		     }
		    String fileName = new String(defaultname.getBytes("GBK"), "utf-8");
		    response.setHeader("Content-disposition", "attachment; filename="
		      + fileName);
		    JRExporter exporter = new JRRtfExporter();
		    exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
		    exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, response
		      .getOutputStream());

		    exporter.exportReport();
		   }
		   /**
		    * 按照類型導出不同格式文件
		    * 
		    * @param datas
		    *            數據
		    * @param type
		    *            文件類型
		    * @param is
		    *            jasper文件的來源
		    * @param request
		    * @param response
		    * @param defaultFilename默認的導出文件的名稱
		    */
		   private static void export(Collection datas, String type,String defaultFilename, InputStream is,
		     HttpServletRequest request, HttpServletResponse response) {
		    logger.debug("導出判斷     The method======= export() start.......................");
		    try {
		     JasperReport jasperReport = (JasperReport) JRLoader.loadObject(is);
		     prepareReport(jasperReport, type);
		    JRDataSource ds = new JRBeanCollectionDataSource(datas, false);
		     Map parameters = new HashMap();
		   // parameters.put("wheresql", " and status='3'");
		    /* parameters.put("wheresql", "");
		       String diver = "oracle.jdbc.driver.OracleDriver";
				String url = "jdbc:oracle:thin:@192.168.1.156:1521:orcl";
				String username = "qqwcrm0625";
				String password = "qqwcrm";
				ReportDataSource datasource = new ReportDataSource();
				datasource.setDiver(diver);
				datasource.setUrl(url);
				datasource.setUsername(username);
				datasource.setPassword(password);
				Connection con=getConnection(datasource);*/
		     JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, parameters, ds);

		     if (EXCEL_TYPE.equals(type)) {
		      exportExcel(jasperPrint,defaultFilename, request, response);
		     } else if (PDF_TYPE.equals(type)) {
		      exportPdf(jasperPrint,defaultFilename, request, response);
		     } else if (HTML_TYPE.equals(type)) {
		      exportHtml(jasperPrint,defaultFilename, request, response);
		     } else if (WORD_TYPE.equals(type)) {
		      exportWord(jasperPrint,defaultFilename, request, response);
		     }
		    } catch (Exception e) {
		     e.printStackTrace();
		    }
		   }
		   /**
		    * 導出入口
		    * 
		    * @param exportType
		    *            導出文件的類型
		    * @param jaspername
		    *            jasper文件的名字 如： xx.jasper
		    * @param lists
		    *           導出的數據
		    * @param request
		    * @param response
		    * @param defaultFilename默認的導出文件的名稱
		    */
		   public static void exportmain(String exportType,String jaspername,List lists,String defaultFilename){
			   logger.debug("進入導出    The method======= exportmain() start.......................");
			   ActionContext ct = ActionContext.getContext();
			   HttpServletRequest request = (HttpServletRequest) ct.get(ServletActionContext.HTTP_REQUEST);
			   HttpServletResponse response = ServletActionContext.getResponse();
			String filenurl=request.getRealPath("/ireport/"+jaspername);//jasper文件放在WebRoot/ireport/xx.jasper
			   File file = new File(filenurl);
		        InputStream is = null;
		        try {
					is = new FileInputStream(file);
				} catch (FileNotFoundException e) {
					e.printStackTrace();
				}
				export(lists,exportType,defaultFilename,is,request,response);
		   }
}



 

③ struts配置文件中的配置，沒有什麼特別的

		<action name="exportexcel" class="intentProVoList"  method="exportexcel">
		<result name="success"></result>
		</action>
 

 四、特別注意：在ireport中的fields中，各個字段的名稱一定要與list中的各個對象的name一樣。是區分大小寫的。所以大小寫也要一致