一、在JSP中通過傳參數實現源代碼：（在jasper模板中定義好查詢條件及參數）
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="java.io.*,java.sql.*,net.sf.jasperreports.engine.*"%>
<%@ page import="com.szywit.dbapi.dbconn.CPool,net.sf.jasperreports.engine.data.JRBeanCollectionDataSource,net.sf.jasperreports.engine.util.JRLoader"%>
<jsp:directive.include file="/public_jdbc.jspf" />
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>報表打印</title>
</head>
<body id="Body">
<%
String parentid = "",sect_name="",actcode="",run_types="";
CommonModel CM;
String reportName = request.getParameter("reportName");
if (request.getParameter("parentid") != null)
parentid = request.getParameter("parentid");
if (request.getParameter("pect_name") != null)
sect_name = request.getParameter("pect_name");
if (request.getParameter("actcode") != null)
actcode = request.getParameter("actcode");
if (request.getParameter("run_types") != null)
run_types = request.getParameter("run_types");
//報表編譯之后的.jasper文件的存放位置
File reportFile = new File(
application.getRealPath("/ems/report/eventLog.jasper"));
//傳遞報表中用到的參數值，這里是空值
System.out.println("param:=" + parentid);
Map parameters = new HashMap();
System.out.print(sect_name);
parameters.put("event_code", "%"+event_code+"%");
parameters.put("event_name", "%"+event_name+"%");
parameters.put("type_code2", "%"+parentid+"%");
parameters.put("type_code", "%"+parentid+"%");
parameters.put("type_code1", "%"+parentid+"%");
parameters.put("type_code2", "%"+parentid+"%");
parameters.put("sect_name", "%"+sect_name+"%");
parameters.put("actcode", "%"+actcode+"%");
parameters.put("run_types", "%"+run_types+"%");
//連接到數據庫
Connection conn = null;
try 
{
conn = ConnectionManager.getConnection("EMSDATACON");
} catch (Exception e) {
e.printStackTrace();
throw new Exception("創建默認數據庫連接不成功,請檢查dbconn.properties是否正確配置");
}
System.out.println("----------jasper begin-----------");
//在控制臺打印報表文件的物理路徑
System.out.println("****物理路徑 ***" + reportFile.getPath());
byte[] bytes = JasperRunManager.runReportToPdf(
reportFile.getPath(), parameters, conn);
System.out.println("bytes=" + parameters);
System.out.println("---------jasper end-------");
response.setContentType("application/pdf");
response.setContentLength(bytes.length);
//清除輸出對象的沖突（因jsp本身有自己的out輸出對象，如果去除下面的語句，則response.getOutputStream()得到的輸出對象與原來存在的out對象沖突，會報異常）
out.clear();
out = pageContext.pushBody();
ServletOutputStream output = response.getOutputStream();
output.write(bytes, 0, bytes.length);
output.flush();
output.close();
try {
if (conn != null) {
conn.close();
}
} catch (Exception e) {
e.printStackTrace();
}
%>
</body>
</html>
二、通過傳遞結果集，JAVA實現
<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
<%@ page language="java" import="com.szywit.file.ReportExport"%>
<%@ page
import="java.io.*,net.sf.jasperreports.engine.*,
net.sf.jasperreports.engine.util.JRLoader,net.sf.jasperreports.engine.data.JRBeanCollectionDataSource,net.sf.jasperreports.engine.export.JRRtfExporter"%>
<jsp:directive.include file="/public_jdbc.jspf" />
<%
String parentid = "", sect_name = "", actcode = "", run_types = "", types = "", typedot = "";
List list = new ArrayList();
File reportFile = new File(
application.getRealPath("/ems/report/preschDetail.jasper"));
Vector rsVector;
CommonModel CM;
//傳參
if (request.getParameter("types") != null)
types = request.getParameter("types");
if (request.getParameter("parentid") != null)
parentid = request.getParameter("parentid");
if (request.getParameter("pect_name") != null)
sect_name = request.getParameter("pect_name");
if (request.getParameter("actcode") != null)
actcode = request.getParameter("actcode");
if (request.getParameter("run_types") != null)
run_types = request.getParameter("run_types");
String sql = "select * from vw_preschdetail where ( type_code like '%"
+ parentid
+ "%'"
+ "or type_code2 like '%"
+ parentid
+ "%' or type_code1 like '%"
+ parentid
+ "%')"
+ "and (sect_name like '%"
+ sect_name
+ "%') and (run_types like '%"
+ run_types
+ "%')"
+ " and (actcode like '%" + actcode + "%')";
try {
rsVector = CCommonDAO.select(sql, "EMSDATACON");
if (rsVector != null && !rsVector.isEmpty()) {
for (int j = 0; j < rsVector.size(); j++) {
CM = (CommonModel) rsVector.get(j);
Map map = new HashMap();
map.put("sect_names", CM.getAttrValue("sect_names")
.trim());
map.put("type_name", CM.getAttrValue("type_name")
.trim());
map.put("actcode", CM.getAttrValue("actcode").trim());
map.put("actconts", CM.getAttrValue("actconts").trim());
map.put("run_types", CM.getAttrValue("run_types")
.trim());
map.put("car_lens", CM.getAttrValue("car_lens").trim());
map.put("dev_info", CM.getAttrValue("dev_info").trim());
map.put("vehi_info", CM.getAttrValue("vehi_info")
.trim());
map.put("vehisplit_info",
CM.getAttrValue("vehisplit_info").trim());
map.put("car_lens", CM.getAttrValue("car_lens").trim());
map.put("pub_info", CM.getAttrValue("pub_info").trim());
list.add(map);
}
}
String filenames = "預案臺帳"
+ CAutoSerialNumber.getServerDateTime();
//String filenames = "預案臺帳." + typedot;
ReportExport.export(list, filenames, types, reportFile,
request, response);
/**//* out.clear();
out = pageContext.pushBody(); */
/**//* JRDataSource ds = new JRBeanCollectionDataSource(list, false);
JasperReport jasperReport = (JasperReport) JRLoader
.loadObject(reportFile);
Map parameters = new HashMap();
JasperPrint jasperPrint = JasperFillManager.fillReport(
jasperReport, parameters, ds);
response.setContentType("application/msword;charset=utf-8");
String files = "預案臺帳" + CAutoSerialNumber.getServerDateTime() + ".doc";
String fileName = new String(files.getBytes("GBK"), "ISO8859_1");
response.setHeader("Content-disposition",
"attachment; filename=" + fileName);
OutputStream os=response.getOutputStream();
JRExporter exporter = new JRRtfExporter();
exporter.setParameter(JRExporterParameter.JASPER_PRINT,
jasperPrint);
exporter.setParameter(JRExporterParameter.OUTPUT_STREAM,
os);
exporter.exportReport();
out.clear();
out = pageContext.pushBody(); */
} catch (Exception e) {
e.printStackTrace();
}
%>
JAVA代碼
package com.szywit.file;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectOutputStream;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Field;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
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;
/** *//**
* 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
*/
public class ReportExport {
public static void prepareReport(JasperReport jasperReport, String type) {
/**//*
* 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 filename,
HttpServletRequest request, HttpServletResponse response)
throws IOException, JRException {
/**//*
* 設置頭信息
*/
if (filename.trim() != null && filename != null) {
filename = filename + ".xls";
} else {
filename = "export.xls";
}
response.setContentType("application/vnd.ms-excel");
String fileName = new String(filename.getBytes("GBK"), "ISO8859_1");
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， 1）在ireport的classpath中加入iTextAsian.jar
* 2）在ireport畫jrxml時，pdf font name ：STSong-Light ，pdf encoding ：
* UniGB-UCS2-H
*/
public static void exportPdf(JasperPrint jasperPrint,
HttpServletRequest request, HttpServletResponse response)
throws IOException, JRException {
response.setContentType("application/pdf");
String fileName = new String("未命名.pdf".getBytes("GBK"), "ISO8859_1");
response.setHeader("Content-disposition", "attachment; filename="
+ fileName);
ServletOutputStream ouputStream = response.getOutputStream();
JasperExportManager.exportReportToPdfStream(jasperPrint, ouputStream);
ouputStream.flush();
ouputStream.close();
}
/** *//**
* 在線顯示pdf，
*/
public static void exportLinePdf(JasperPrint jasperPrint,String defaultFilename,
HttpServletRequest request, HttpServletResponse response)
throws IOException, JRException {
String defaultname = null;
try {
response.setContentType("application/pdf");
response.setCharacterEncoding("UTF-8");
if (defaultFilename.trim() != null && defaultFilename != null) {
defaultname = defaultFilename + ".pdf";
} else {
defaultname = "export.pdf";
}
response.setHeader("Content-disposition", "inline; filename="+defaultname);
ServletOutputStream ouputStream = response.getOutputStream();
JasperExportManager.exportReportToPdfStream(jasperPrint, ouputStream);
ouputStream.flush();
ouputStream.close();
} catch (Exception e) {
System.out.println("Jasper Output Error:" + e.getMessage());
}
}
/** *//**
* 導出html
*/
public static void exportHtml(JasperPrint jasperPrint,
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
*/
public static void exportWord(JasperPrint jasperPrint,String filename,
HttpServletRequest request, HttpServletResponse response)
throws JRException, IOException {
if (filename.trim() != null && filename != null) {
filename = filename + ".xls";
} else {
filename = "export.xls";
}
response.setContentType("application/msword;charset=utf-8");
String fileName = new String(filename.getBytes("GBK"), "ISO8859_1");
response.setHeader("Content-disposition", "attachment; filename="
+ fileName);
ServletOutputStream ouputStream = response.getOutputStream();
JRExporter exporter = new JRRtfExporter();
exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
exporter.setParameter(JRExporterParameter.OUTPUT_STREAM,
ouputStream);
exporter.exportReport();
ouputStream.flush();
ouputStream.close();
}
/** *//**
* 打印
*/
public static void exportPrint(JasperPrint jasperPrint,
HttpServletResponse response, HttpServletRequest request)
throws IOException {
response.setContentType("application/octet-stream");
ServletOutputStream ouputStream = response.getOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(ouputStream);
oos.writeObject(jasperPrint);
oos.flush();
oos.close();
ouputStream.flush();
ouputStream.close();
}
public static void export(Collection datas,String filename, String type, File is,
HttpServletRequest request, HttpServletResponse response) {
try {
JasperReport jasperReport = (JasperReport) JRLoader.loadObject(is);
prepareReport(jasperReport, type);
JRDataSource ds = new JRBeanCollectionDataSource(datas, false);
Map parameters = new HashMap();
JasperPrint jasperPrint = JasperFillManager.fillReport(
jasperReport, parameters, ds);
if (EXCEL_TYPE.equals(type)) {
exportExcel(jasperPrint,filename,request, response);
} else if (PDF_TYPE.equals(type)) {
exportPdf(jasperPrint, request, response);
} else if (HTML_TYPE.equals(type)) {
exportHtml(jasperPrint, request, response);
} else if (WORD_TYPE.equals(type)) {
exportWord(jasperPrint, filename,request, response);
}else if (LINE_TYPE.equals(type)) {
exportLinePdf(jasperPrint,filename,request, response);
}
} catch (Exception e) {
e.printStackTrace();
}
}
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 final String LINE_TYPE = "linePdf";
}