资讯

精准传达 • 有效沟通

从品牌网站建设到网络营销策划，从策略到执行的一站式服务

网站建设 >

查看其它板块

怎么在Java中使用jasperReport对动态列进行打印-创新互联

这篇文章将为大家详细讲解有关怎么在Java中使用jasperReport对动态列进行打印，文章内容质量较高，因此小编分享给大家做个参考，希望大家阅读完这篇文章后对相关知识有一定的了解。

专注于为中小企业提供成都网站设计、成都网站制作服务,电脑端+手机端+微信端的三站合一,更高效的管理,为中小企业颍州免费做网站提供优质的服务。我们立足成都，凝聚了一批互联网行业人才，有力地推动了上千多家企业的稳健成长，帮助中小企业通过网站建设实现规模扩充和转变。

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 projectList = getEntityManager().queryPrintProjectInfo(printValue); 
 
  // 将数据转换为Map对象，换化成Map对象 
  List reportDataList = new ArrayList(); 
 
  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 pageCountList = new ArrayList(); 
   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; 
 }

网站栏目：怎么在Java中使用jasperReport对动态列进行打印-创新互联
链接地址：http://cdkjz.cn/article/shcio.html
返回首页 了解更多建站资讯

相关资讯

多年建站经验

多一份参考，总有益处

联系快上网，免费获得专属《策划方案》及报价

咨询相关问题或预约面谈，可以通过以下方式与我们联系

大客户专线   成都：13518219792   座机：028-86922220

在线咨询 提交需求
友情链接 交换友情链接
成都平面广告设计等级保护测评微信小程序成都小程序温江做网站定制网站建设百度关键词排名乐山电信机房南充网站制作成都网站设计

成都网站建设公司地址：成都市青羊区太升南路288号锦天国际A座10层 建设咨询028-86922220

成都快上网科技有限公司-四川网站建设设计公司 | 蜀ICP备19037934号 Copyright 2020,ALL Rights Reserved cdkjz.cn | 成都网站建设 | © Copyright 2020版权所有.

专家团队为您提供成都网站建设,成都网站设计,成都品牌网站设计,成都营销型网站制作等服务,成都建网站就找快上网！ | 成都网站建设哪家好？ | 网站建设地图