使用jasperreport生成报表
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2024-02-24 13:07:04
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1.ReportUtils.java通用类
2.用Servlet导出生成文件
3.web.xml中的Servlet配置
4.调用
5.直接生成文件
/**
* 使用jasperReport做报表时的工具支持类.有两个用途,生成jasperPrint对象,和设置导出时的session
*/
public class ReportUtils {
private HttpServletRequest request;
private HttpServletResponse response;
private HttpSession session;
public ReportUtils(HttpServletRequest request, HttpServletResponse response) {
this.request = request;
this.session = request.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 JasperPrint getJasperPrint(String filePath, Map parameter,
JRDataSource dataSource) throws JRException {
JasperReport jasperReport = 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 JasperPrint getJasperPrint(String filePath, Map parameter,
Connection conn) throws JRException {
JasperReport jasperReport = 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 JasperPrint getPrintWithBeanList(String filePath, Map parameter,
List list) throws JRException {
JRDataSource dataSource = new JRBeanCollectionDataSource(list);
return getJasperPrint(filePath, parameter, dataSource);
}
/**
* 传入类型，获取输出器
*
* @param docType
* @return
*/
public JRAbstractExporter getJRExporter(DocType docType) {
JRAbstractExporter exporter = null;
switch (docType) {
case PDF:
exporter = new JRPdfExporter();
break;
case HTML:
exporter = new JRHtmlExporter();
break;
case XLS:
exporter = new JExcelApiExporter();
break;
case XML:
exporter = new JRXmlExporter();
break;
case RTF:
exporter = new JRRtfExporter();
break;
case CSV:
exporter = new JRCsvExporter();
break;
case TXT:
exporter = new JRTextExporter();
break;
}
return exporter;
}
/**
* 获得相应类型的Content type
* @param docType
* @return
*/
public String getContentType(DocType docType){
String contentType="text/html";
switch(docType){
case PDF:
contentType = "application/pdf";
break;
case XLS:
contentType = "application/vnd.ms-excel";
break;
case XML:
contentType = "text/xml";
break;
case RTF:
contentType = "application/rtf";
break;
case CSV:
contentType = "text/plain";
break;
}
return contentType;
}
public void setAttrToPage(JasperPrint jasperPrint, String report_fileName,
String report_type) {
session.setAttribute("REPORT_JASPERPRINT", jasperPrint);
session.setAttribute("REPORT_FILENAME", report_fileName);
session.setAttribute("REPORT_TYPE", report_type);
}
/**
* 定义了报表输出类型，固定了可输出类型
*/
public static enum DocType {
PDF, HTML, XLS, XML, RTF, CSV, TXT
}
/**
* 编译报表模板文件jrxml，生成jasper二进制文件
*
* @param jrxmlPath
* @param jrsperPath
* @throws JRException
*/
public void complieJrxml(String jrxmlPath, String jasperPath)
throws JRException {
JasperCompileManager.compileReportToFile(jrxmlPath, jasperPath);
}
/**
* 输出html静态页面，必须注入request和response
*
* @param jasperPath
* @param params
* @param sourceList
* @param imageUrl
* 报表文件使用的图片路径，比如 ../servlets/image?image=
* @throws JRException
* @throws IOException
* @throws ServletException
*/
public void servletExportHTML(String jasperPath, Map params,
List sourceList, String imageUrl) throws JRException, IOException,
ServletException {
response.setContentType("text/html");
response.setCharacterEncoding("UTF-8");
JRAbstractExporter exporter = getJRExporter(DocType.HTML);
JasperPrint jasperPrint = getPrintWithBeanList(jasperPath, params,
sourceList);
session.setAttribute(
ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE,
jasperPrint);
PrintWriter out = response.getWriter();
exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
exporter.setParameter(JRExporterParameter.OUTPUT_WRITER, out);
exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI, imageUrl);
exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN,false);//不显示px
exporter.setParameter(JRHtmlExporterParameter.IS_OUTPUT_IMAGES_TO_DIR, Boolean.FALSE);
exporter.setParameter(JRHtmlExporterParameter.BETWEEN_PAGES_HTML, "<br style='page-break-before:always;'>");
exporter.exportReport();
}
/**
* 输出html静态页面，必须注入request和response
*
* @param jasperPath
* @param params
* @param sourceList
* @param imageUrl
* 报表文件使用的图片路径，比如 ../servlets/image?image=
* @throws JRException
* @throws IOException
* @throws ServletException
*/
public void servletExportHTML(String jasperPath, Map params,
Connection conn, String imageUrl) throws JRException, IOException,
ServletException {
response.setContentType("text/html");
response.setCharacterEncoding("UTF-8");
JRAbstractExporter exporter = getJRExporter(DocType.HTML);
JasperPrint jasperPrint = getJasperPrint(jasperPath, params,
conn);
session.setAttribute(
ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE,
jasperPrint);
PrintWriter out = response.getWriter();
exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
exporter.setParameter(JRExporterParameter.OUTPUT_WRITER, out);
exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI, imageUrl);
exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN,false);//不显示px
exporter.setParameter(JRHtmlExporterParameter.IS_OUTPUT_IMAGES_TO_DIR, Boolean.FALSE);
exporter.exportReport();
}
/**
* 生成不同格式报表文档
*
* @param docType
* 文档类型
* @param jasperPath
*/
public void servletExportDocument(DocType docType, String jasperPath,
Map params, List sourceList, String fileName) throws JRException,
IOException, ServletException {
if (docType == DocType.HTML) {
servletExportHTML(jasperPath, params, sourceList, fileName);
return;
}
JRAbstractExporter exporter = getJRExporter(docType);
// 获取后缀
String ext = docType.toString().toLowerCase();
if (!fileName.toLowerCase().endsWith(ext)) {
fileName += "." + ext;
}
// 判断资源类型
if (ext.equals("xls")) {
// 要想获得更好的视觉效果，可以添加以下代码
exporter.setParameter(
JRXlsExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_ROWS,
Boolean.TRUE); // 删除记录最下面的空行
exporter.setParameter(JRXlsExporterParameter.IS_ONE_PAGE_PER_SHEET,
Boolean.FALSE);// 删除多余的ColumnHeader
exporter.setParameter(JRXlsExporterParameter.IS_WHITE_PAGE_BACKGROUND
, Boolean.FALSE);// 显示边框
}
response.setContentType(getContentType(docType));
response.setHeader("Content-Disposition", "attachment; filename=\""
+ URLEncoder.encode(fileName, "UTF-8") + "\"");
exporter.setParameter(JRExporterParameter.JASPER_PRINT,
getPrintWithBeanList(jasperPath, params, sourceList));
OutputStream outStream = null;
PrintWriter outWriter = null;
if(ext.equals("csv")){//解决中文乱码问题
response.setCharacterEncoding("GBK");
outWriter = response.getWriter();
exporter.setParameter(JRExporterParameter.OUTPUT_WRITER,outWriter);
}else{
outStream = response.getOutputStream();
exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, outStream);
if(ext.equals("txt")){
exporter.setParameter(JRTextExporterParameter.CHARACTER_WIDTH, new Integer(80));
exporter.setParameter(JRTextExporterParameter.CHARACTER_HEIGHT, new Integer(25));
exporter.setParameter(JRTextExporterParameter.CHARACTER_ENCODING,"GBK");
}
}
try {
exporter.exportReport();
} catch (JRException e) {
throw new ServletException(e);
} finally {
if (outStream != null) {
try {
outStream.close();
} catch (IOException ex) {
}
}
}
}
/**
* 生成不同格式报表文档
*
* @param docType
* 文档类型
* @param jasperPath
*/
public void servletExportDocument(DocType docType, String jasperPath,
Map params, Connection conn, String fileName) throws JRException,
IOException, ServletException {
if (docType == DocType.HTML) {
servletExportHTML(jasperPath, params, conn, fileName);
return;
}
JRAbstractExporter exporter = getJRExporter(docType);
// 获取后缀
String ext = docType.toString().toLowerCase();
if (!fileName.toLowerCase().endsWith(ext)) {
fileName += "." + ext;
}
// 判断资源类型
if (ext.equals("xls")) {
// 要想获得更好的视觉效果，可以添加以下代码
exporter.setParameter(
JRXlsExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_ROWS,
Boolean.TRUE); // 删除记录最下面的空行
exporter.setParameter(JRXlsExporterParameter.IS_ONE_PAGE_PER_SHEET,
Boolean.FALSE);// 删除多余的ColumnHeader
exporter.setParameter(JRXlsExporterParameter.IS_WHITE_PAGE_BACKGROUND
, Boolean.FALSE);// 显示边框
}
response.setContentType(getContentType(docType));
response.setHeader("Content-Disposition", "attachment; filename=\""
+ URLEncoder.encode(fileName, "UTF-8") + "\"");
exporter.setParameter(JRExporterParameter.JASPER_PRINT,
getJasperPrint(jasperPath, params, conn));
OutputStream outStream = null;
PrintWriter outWriter = null;
if(ext.equals("csv")){//解决中文乱码问题
response.setCharacterEncoding("GBK");
outWriter = response.getWriter();
exporter.setParameter(JRExporterParameter.OUTPUT_WRITER,outWriter);
}else{
outStream = response.getOutputStream();
exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, outStream);
if(ext.equals("txt")){
exporter.setParameter(JRTextExporterParameter.CHARACTER_WIDTH, new Integer(80));
exporter.setParameter(JRTextExporterParameter.CHARACTER_HEIGHT, new Integer(25));
exporter.setParameter(JRTextExporterParameter.CHARACTER_ENCODING,"GBK");
}
}
try {
exporter.exportReport();
} catch (JRException e) {
throw new ServletException(e);
} finally {
if (outStream != null) {
try {
outStream.close();
} catch (IOException ex) {
}
}
}
}
}2.用Servlet导出生成文件
public class JapserReportServlet extends HttpServlet{
private static final long serialVersionUID = 1L;
public void init(){}
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException{
String docType = request.getParameter("docType");
String jasperFile = request.getParameter("jasperFile");
String isBean = request.getParameter("isBean");//数据提供方式
String fileName = new String(request.getParameter("fileName").getBytes("ISO-8859-1"),"UTF-8");
//jasper文件放在应用根目录的reports中
String jasperPath = request.getSession().getServletContext().getRealPath("/") + "/reports/"+ jasperFile;
if(StringUtils.isNotEmpty(jasperPath)){
if(StringUtils.isEmpty(fileName)){
fileName = "报表";
}
ReportUtils jasperReport = new ReportUtils(request,response);
//传递报表中(SQL)用到的参数值:$P{ProjectName}
Map params = new HashMap();
//"Name"是报表中定义过的一个参数名称,其类型为String 型
//params.put("ProjectName", new String("Project1"));
try {
if(isBean.equals("1")){
jasperReport.servletExportDocument(getEnumDocType(docType), jasperPath, params, getSourceList(), fileName);
}else{
jasperReport.servletExportDocument(getEnumDocType(docType), jasperPath, params, getConnection(), fileName);
}
} catch (JRException e) {
e.printStackTrace();
} catch (ServletException e) {
e.printStackTrace();
}
}else{
response.setCharacterEncoding("UTF-8");
response.sendError(-1, "出错：jasperPath参数是必须的!");
}
}
public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException{
this.doGet(request, response);
}
public void destroy() {
super.destroy();
}
public static DocType getEnumDocType(String docType){
DocType type = DocType.HTML;
docType = docType.toUpperCase();
if(docType.equals("PDF")){
type = DocType.PDF;
}else if(docType.equals("XLS")){
type = DocType.XLS;
}else if(docType.equals("XML")){
type = DocType.XML;
}else if(docType.equals("RTF")){
type = DocType.RTF;
}else if(docType.equals("CSV")){
type = DocType.CSV;
}else if(docType.equals("TXT")){
type = DocType.TXT;
}
return type;
}
/***数据对象****/
public static List getSourceList(){
List<TUser> sourceList = new ArrayList<TUser>();// 测试数据源
for (int i = 0; i < 15; i++) {
TUser user = new TUser();
user.setId(1000 + i);
user.setUsername("user_" + i);
user.setPassword("*******");
sourceList.add(user);
}
return sourceList;
}
/****数据库连接****/
public static Connection getConnection() {
Connection conn = null;
String driver = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://127.0.0.1/springapp?useUnicode=true&characterEncoding=gb2312";
try {
Class.forName(driver);
conn = DriverManager.getConnection(url,"root", "root");
return conn;
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException ex) {
ex.printStackTrace();
}
return null;
}
}
3.web.xml中的Servlet配置
<servlet>
<servlet-name>JapserReportServlet</servlet-name>
<servlet-class>
com.logcd.servlet.JapserReportServlet
</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>JapserReportServlet</servlet-name>
<url-pattern>/reports</url-pattern>
</servlet-mapping>
4.调用
function jasperReport(docType){
var jasperFile = "Regist_User_Group.jasper";
var paramStr = "?docType=" + docType + "&jasperFile="+jasperFile + "&fileName=" +'人员名单列表' + "&isBean=0";
var url = getCurrentDirectory() + "/reports" + paramStr;
window.open(url);
}
/***获取当前路径***/
function getCurrentDirectory(){
var locHref = location.href;
var locArray = locHref.split("/");
delete locArray[locArray.length-1];
var dirStr = locArray.join("/");
return dirStr;
} 报表类型
<select name="reportType" id="reportType">
<option value="html">HTML</option>
<option value="pdf">PDF</option>
<option value="rtf">RTF</option>
<option value="xls">XLS</option>
<option value="xml">XML</option>
<option value="csv">CSV</option>
<option value="txt">TXT</option>
</select>
<button onclick="jasperReport($('reportType').value);">Reports</button>
5.直接生成文件
public class FirstJasperReports {
static String fileName="E:/workspace/js_test/jrxml/HelloWorld.jrxml";
public static void main(String[] args)throws Exception{
long startTime=System.currentTimeMillis();
//将报表的定义文件HelloWorld.jrxml编译成HelloWorld.jasper文件
String jasperFile=JasperCompileManager.compileReportToFile(fileName);
//向HelloWorld.jasper文件中填充数据，这一步将生产出HelloWorld .jrprint文件
String jrprintFile=JasperFillManager.fillReportToFile(jasperFile,null,new JREmptyDataSource());
//将.jrprint文件转换成HTML格式
JasperExportManager.exportReportToHtmlFile(jrprintFile);
//将.jrprint文件转换成PDF格式
//JasperExportManager.exportReportToPdfFile(jrprintFile);
//将.jrprint文件转换成XML格式
JasperExportManager.exportReportToXmlFile(jrprintFile,false);
//将.jrprint文件转换成XLS格式(即Excel文件)，需要用到POI类库.
File sourceFile = new File(jrprintFile);
JasperPrint jasperPrint = (JasperPrint)JRLoader.loadObject(sourceFile);
File destFile = new File(sourceFile.getParent(), jasperPrint.getName() + ".xls");
JRXlsExporter exporter = new JRXlsExporter();
exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
exporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME, destFile.toString());
exporter.setParameter(JRXlsExporterParameter.IS_ONE_PAGE_PER_SHEET, Boolean.TRUE);
exporter.exportReport();
long endTime=System.currentTimeMillis();
long time=(endTime-startTime)/1000;
System.out.println("success with "+time+" s");
}
}