这篇文章主要介绍了Java 中jasperReport实现动态列打印的实现代码的相关资料,希望通过本文大家能掌握这部分内容,需要的朋友可以参考下
Java 中jasperReport实现动态列打印的实现代码
以下代码中注释说明很清楚,希望能帮助到大家,大家参考下。
示例代码:
public ActionResult projectPrint() { String[] printValue = null; // 从页面中获得要查询的字段 String reqPrintValue = getRequest().getParameter("printValue"); // 没有选择则默认全打印 if (null == reqPrintValue || StringUtils.isEmpty(reqPrintValue)) { printValue = new String[] { "pnumber", "pname", "pdepart", "pdecision", "pthrow", "plastmonth", "pfund", "ploan" }; } else { printValue = reqPrintValue.split(","); } // 查询统计数据 List<Object[]> projectList = getEntityManager().queryPrintProjectInfo(printValue); // 将数据转换为Map对象,换化成Map对象 List<Map> reportDataList = new ArrayList<Map>(); for (int i = 0; i < projectList.size(); i++) { Object[] personStr = projectList.get(i); Map reportData = new HashMap(); for (int j = 0; j < personStr.length; j++) { reportData.put("field_" + j, String.valueOf(personStr[j])); } reportDataList.add(reportData); } int columCount = 0;// 数据列 int fieldCount = 0;// 字段列数(因为pname比较长所以想让pname比其它的列长些,故设计这个变量) int pnameCount = -1;// 记录下pname的序号 for (int i = 0; i < printValue.length; i++) { // pthrow下面有两列 if ("pthrow".equals(printValue[i])) { columCount = columCount + 2; fieldCount = fieldCount + 2; // ploan下面也有两列 } else if ("ploan".equals(printValue[i])) { columCount = columCount + 2; fieldCount = fieldCount + 2; // 故意让pname也占两列 } else if ("pname".equals(printValue[i])) { pnameCount = i;// 记录下pname的序号 columCount = columCount + 1; fieldCount = fieldCount + 2; } else { // 其它的列都占一个单位 columCount = columCount + 1; fieldCount = fieldCount + 1; } } InputStream is = null; try { // 从资源文件中读取报表 is = this.getClass().getResourceAsStream("/reports/project.jrxml"); JasperDesign jasperDesign = (JasperDesign) JRXmlLoader.load(is); Map styleMap = jasperDesign.getStylesMap(); // column header 对应的样式 JRDesignStyle theaderStyle = (JRDesignStyle) styleMap.get("theader"); // column detail 对应的样式 JRDesignStyle tbodyStyle = (JRDesignStyle) styleMap.get("tboby"); // pagefoot 对应的样式 JRDesignStyle tfootStyle = (JRDesignStyle) styleMap.get("tfoot"); int _START_X_ = 20;// x轴的起始位置 int startX = _START_X_; // x轴的起始位置 // 单列的宽度 // 535是jasepreReport报表column最大的宽度 int columnWidth = 535 / fieldCount; // 20,24,15是报表中已设置的,一定与之相同 final int columnHeadBandHeight = 20; final int detailHeight = 24; final int pagefootHeight = 15; // 设置报表字段 for (int idx = 0; idx < columCount; idx++) { JRDesignField field = new JRDesignField(); field.setName("field_" + idx); field.setValueClass(java.lang.String.class); jasperDesign.addField(field); } JRDesignBand columnHeadBand = (JRDesignBand) jasperDesign.getColumnHeader(); // 绘制表头 for (int idx = 0; idx < printValue.length; idx++) { if ("pnumber".equals(printValue[idx])) { JRDesignStaticText staticText = new JRDesignStaticText(); staticText.setStyle(theaderStyle); staticText.setWidth(columnWidth); staticText.setY(0); staticText.setX(startX); staticText.setHeight(2 * columnHeadBandHeight); staticText.setText("序号"); columnHeadBand.addElement(staticText); startX += columnWidth; } else if ("pname".equals(printValue[idx])) { JRDesignStaticText staticText = new JRDesignStaticText(); staticText.setStyle(theaderStyle); // 项目名称的宽度是其它的宽度的2倍 staticText.setWidth(columnWidth * 2); staticText.setY(0); staticText.setX(startX); staticText.setHeight(2 * columnHeadBandHeight); staticText.setText("项目名称"); columnHeadBand.addElement(staticText); startX += columnWidth * 2; } else if ("pdepart".equals(printValue[idx])) { JRDesignStaticText staticText = new JRDesignStaticText(); staticText.setStyle(theaderStyle); staticText.setWidth(columnWidth); staticText.setY(0); staticText.setX(startX); staticText.setHeight(2 * columnHeadBandHeight); staticText.setText("部门"); columnHeadBand.addElement(staticText); startX += columnWidth; } else if ("pdecision".equals(printValue[idx])) { JRDesignStaticText staticText = new JRDesignStaticText(); staticText.setStyle(theaderStyle); staticText.setWidth(columnWidth); staticText.setY(0); staticText.setX(startX); staticText.setHeight(2 * columnHeadBandHeight); staticText.setText("已决策"); columnHeadBand.addElement(staticText); startX += columnWidth; } else if ("pthrow".equals(printValue[idx])) { // 投审会下面有两列 JRDesignStaticText staticText = new JRDesignStaticText(); staticText.setStyle(theaderStyle); staticText.setWidth(columnWidth * 2); staticText.setY(0); staticText.setX(startX); staticText.setHeight(columnHeadBandHeight); staticText.setText("投审会"); columnHeadBand.addElement(staticText); staticText = new JRDesignStaticText(); staticText.setStyle(theaderStyle); columnHeadBand.addElement(staticText); staticText.setWidth(columnWidth); staticText.setY(columnHeadBandHeight); staticText.setX(startX); staticText.setHeight(columnHeadBandHeight); staticText.setText("12月初"); staticText = new JRDesignStaticText(); staticText.setStyle(theaderStyle); columnHeadBand.addElement(staticText); staticText.setWidth(columnWidth); staticText.setY(columnHeadBandHeight); staticText.setX(startX + columnWidth); staticText.setHeight(columnHeadBandHeight); staticText.setText("12月中"); columnHeadBand.addElement(staticText); startX += 2 * columnWidth; } else if ("plastmonth".equals(printValue[idx])) { // 投决会下面有一列 JRDesignStaticText staticText = new JRDesignStaticText(); staticText.setStyle(theaderStyle); staticText.setWidth(columnWidth); staticText.setY(0); staticText.setX(startX); staticText.setHeight(columnHeadBandHeight); staticText.setText("投决会"); columnHeadBand.addElement(staticText); staticText = new JRDesignStaticText(); staticText.setStyle(theaderStyle); columnHeadBand.addElement(staticText); staticText.setWidth(columnWidth); staticText.setY(columnHeadBandHeight); staticText.setX(startX); staticText.setHeight(columnHeadBandHeight); staticText.setText("12月下"); columnHeadBand.addElement(staticText); startX += columnWidth; } else if ("pfund".equals(printValue[idx])) { JRDesignStaticText staticText = new JRDesignStaticText(); staticText.setStyle(theaderStyle); staticText.setWidth(columnWidth); staticText.setY(0); staticText.setX(startX); staticText.setHeight(2 * columnHeadBandHeight); staticText.setText("基金投资额"); columnHeadBand.addElement(staticText); startX += columnWidth; } else if ("ploan".equals(printValue[idx])) { // 投贷协同额下面有两列 JRDesignStaticText staticText = new JRDesignStaticText(); staticText.setStyle(theaderStyle); staticText.setWidth(columnWidth * 2); staticText.setY(0); staticText.setX(startX); staticText.setHeight(columnHeadBandHeight); staticText.setText("投贷协同额"); columnHeadBand.addElement(staticText); staticText = new JRDesignStaticText(); staticText.setStyle(theaderStyle); columnHeadBand.addElement(staticText); staticText.setWidth(columnWidth); staticText.setY(columnHeadBandHeight); staticText.setX(startX); staticText.setHeight(columnHeadBandHeight); staticText.setText("金额"); staticText = new JRDesignStaticText(); staticText.setStyle(theaderStyle); columnHeadBand.addElement(staticText); staticText.setWidth(columnWidth); staticText.setY(columnHeadBandHeight); staticText.setX(startX + columnWidth); staticText.setHeight(columnHeadBandHeight); staticText.setText("入库情况"); columnHeadBand.addElement(staticText); startX += 2 * columnWidth; } } // 绘制Detail部门 startX = _START_X_; JRDesignBand columnDetailBand = (JRDesignBand) jasperDesign.getDetail(); for (int idx = 0; idx < columCount; idx++) { JRDesignTextField textField = new JRDesignTextField(); textField.setStretchWithOverflow(true); textField.setX(startX); textField.setY(0); if (pnameCount == idx) { textField.setWidth(2 * columnWidth); startX += 2 * columnWidth; } else { textField.setWidth(columnWidth); startX += columnWidth; } textField.setHeight(detailHeight); textField.setPositionType(JRElement.POSITION_TYPE_FLOAT); textField.setStyle(tbodyStyle); textField.setBlankWhenNull(true); JRDesignExpression expression = new JRDesignExpression(); expression.setValueClass(java.lang.String.class); expression.setText("$F{field_" + idx + "}"); textField.setExpression(expression); columnDetailBand.addElement(textField); } JRDesignBand pageFootBand = (JRDesignBand) jasperDesign.getPageFooter(); // 合计数据,本应统计的 List<Object[]> pageCountList = new ArrayList<Object[]>(); Object[] obj = new String[] { "合计", "15299", "", "", "67121", "92420", "155877", }; pageCountList.add(obj); obj = new String[] { "", "", "", "XXX小计", "", "24473", "16470", }; pageCountList.add(obj); obj = new String[] { "", "", "", "WWW小计", "", "7289", "1674", }; pageCountList.add(obj); obj = new String[] { "", "", "", "ZZZ小计", "", "32700", "13000", }; pageCountList.add(obj); obj = new String[] { "", "", "", "YYY小计", "", "12733", "120733", }; pageCountList.add(obj); obj = new String[] { "", "", "", "AAA小计", "", "2225", "120733", }; pageCountList.add(obj); obj = new String[] { "", "", "", "BBB小计", "", "3000", "0", }; pageCountList.add(obj); int footWidth = 535 / 7; for (int p = 0; p < pageCountList.size(); p++) { for (int k = 0; k < 7; k++) { Object[] ob = pageCountList.get(p); JRDesignStaticText staticText = new JRDesignStaticText(); staticText.setStyle(tfootStyle); staticText.setWidth(footWidth); staticText.setY(pagefootHeight * p); staticText.setX(k * footWidth + _START_X_); staticText.setHeight(pagefootHeight); staticText.setText(String.valueOf(ob[k])); pageFootBand.addElement(staticText); } } // 编译报表 JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign); String type = this.getRequest().getParameter("type");//pdf格式 JasperUtils.prepareReport(jasperReport, type); // 报表数据源 JRDataSource dataSource = new JRBeanCollectionDataSource(reportDataList); JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, null, dataSource); HttpServletResponse response = this.getResponse(); JasperUtils.export(jasperPrint, response, getRequest(), type); } catch (Exception e) { e.printStackTrace(); } return null; }
public static void export(JasperPrint jasperPrint, HttpServletResponse response, HttpServletRequest request, String type) throws IOException { if (EXCEL_TYPE.equals(type)) { exportExcel(jasperPrint, response, request); } else if (PDF_TYPE.equals(type)) { exportPDF(jasperPrint, response, request); } else if (HTML_TYPE.equals(type)) { exportHTML(jasperPrint, response, request); } else { exportPrint(jasperPrint, response, request); } }
public static void exportExcel(JasperPrint jasperPrint, HttpServletResponse response, HttpServletRequest request) throws IOException { response.setContentType("application/vnd.ms-excel"); String filename = DownloadHelper.encodeFilename("未命名.xls", request); 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); try { exporter.exportReport(); } catch (JRException e) { e.printStackTrace(); } ouputStream.flush(); ouputStream.close(); } public static void exportPDF(JasperPrint jasperPrint, HttpServletResponse response, HttpServletRequest request) throws IOException { response.setContentType("application/pdf"); String filename = DownloadHelper.encodeFilename("未命名.pdf", request); response.setHeader("Content-disposition", "attachment;filename=" + filename); ServletOutputStream ouputStream = response.getOutputStream(); try { JasperExportManager.exportReportToPdfStream(jasperPrint, ouputStream); } catch (JRException e) { e.printStackTrace(); } ouputStream.flush(); ouputStream.close(); }
以上是Java中jasperReport实现动态列打印的实例的详细内容。更多信息请关注PHP中文网其他相关文章!

本文讨论了使用Maven和Gradle进行Java项目管理,构建自动化和依赖性解决方案,以比较其方法和优化策略。

本文使用Maven和Gradle之类的工具讨论了具有适当的版本控制和依赖关系管理的自定义Java库(JAR文件)的创建和使用。

本文讨论了使用咖啡因和Guava缓存在Java中实施多层缓存以提高应用程序性能。它涵盖设置,集成和绩效优势,以及配置和驱逐政策管理最佳PRA

本文讨论了使用JPA进行对象相关映射,并具有高级功能,例如缓存和懒惰加载。它涵盖了设置,实体映射和优化性能的最佳实践,同时突出潜在的陷阱。[159个字符]

Java的类上载涉及使用带有引导,扩展程序和应用程序类负载器的分层系统加载,链接和初始化类。父代授权模型确保首先加载核心类别,从而影响自定义类LOA


热AI工具

Undresser.AI Undress
人工智能驱动的应用程序,用于创建逼真的裸体照片

AI Clothes Remover
用于从照片中去除衣服的在线人工智能工具。

Undress AI Tool
免费脱衣服图片

Clothoff.io
AI脱衣机

AI Hentai Generator
免费生成ai无尽的。

热门文章

热工具

WebStorm Mac版
好用的JavaScript开发工具

禅工作室 13.0.1
功能强大的PHP集成开发环境

DVWA
Damn Vulnerable Web App (DVWA) 是一个PHP/MySQL的Web应用程序,非常容易受到攻击。它的主要目标是成为安全专业人员在合法环境中测试自己的技能和工具的辅助工具,帮助Web开发人员更好地理解保护Web应用程序的过程,并帮助教师/学生在课堂环境中教授/学习Web应用程序安全。DVWA的目标是通过简单直接的界面练习一些最常见的Web漏洞,难度各不相同。请注意,该软件中

Atom编辑器mac版下载
最流行的的开源编辑器

Dreamweaver CS6
视觉化网页开发工具