這篇文章將為大家詳細(xì)講解有關(guān)怎么在Java中使用jasperReport對(duì)動(dòng)態(tài)列進(jìn)行打印，文章內(nèi)容質(zhì)量較高，因此小編分享給大家做個(gè)參考，希望大家閱讀完這篇文章后對(duì)相關(guān)知識(shí)有一定的了解。

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示例代碼：

public ActionResult projectPrint() { 
  String[] printValue = null; 
  // 從頁面中獲得要查詢的字段 
  String reqPrintValue = getRequest().getParameter("printValue"); 
  // 沒有選擇則默認(rèn)全打印 
  if (null == reqPrintValue || StringUtils.isEmpty(reqPrintValue)) { 
   printValue = new String[] { "pnumber", "pname", "pdepart", "pdecision", "pthrow", "plastmonth", "pfund", "ploan" }; 
  } else { 
   printValue = reqPrintValue.split(","); 
  } 
  // 查詢統(tǒng)計(jì)數(shù)據(jù) 
  List<Object[]> projectList = getEntityManager().queryPrintProjectInfo(printValue); 
 
  // 將數(shù)據(jù)轉(zhuǎn)換為Map對(duì)象，換化成Map對(duì)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;// 數(shù)據(jù)列 
  int fieldCount = 0;// 字段列數(shù)（因?yàn)閜name比較長所以想讓pname比其它的列長些，故設(shè)計(jì)這個(gè)變量） 
  int pnameCount = -1;// 記錄下pname的序號(hào) 
  for (int i = 0; i < printValue.length; i++) { 
   // pthrow下面有兩列 
   if ("pthrow".equals(printValue[i])) { 
    columCount = columCount + 2; 
    fieldCount = fieldCount + 2; 
    // ploan下面也有兩列 
   } else if ("ploan".equals(printValue[i])) { 
    columCount = columCount + 2; 
    fieldCount = fieldCount + 2; 
    // 故意讓pname也占兩列 
   } else if ("pname".equals(printValue[i])) { 
    pnameCount = i;// 記錄下pname的序號(hào) 
    columCount = columCount + 1; 
    fieldCount = fieldCount + 2; 
   } else { 
    // 其它的列都占一個(gè)單位 
    columCount = columCount + 1; 
    fieldCount = fieldCount + 1; 
   } 
  } 
 
  InputStream is = null; 
  try { 
   // 從資源文件中讀取報(bào)表 
   is = this.getClass().getResourceAsStream("/reports/project.jrxml"); 
   JasperDesign jasperDesign = (JasperDesign) JRXmlLoader.load(is); 
 
   Map styleMap = jasperDesign.getStylesMap(); 
   // column header 對(duì)應(yīng)的樣式 
   JRDesignStyle theaderStyle = (JRDesignStyle) styleMap.get("theader"); 
   // column detail 對(duì)應(yīng)的樣式 
   JRDesignStyle tbodyStyle = (JRDesignStyle) styleMap.get("tboby"); 
   // pagefoot 對(duì)應(yīng)的樣式 
   JRDesignStyle tfootStyle = (JRDesignStyle) styleMap.get("tfoot"); 
 
   int _START_X_ = 20;// x軸的起始位置 
   int startX = _START_X_; // x軸的起始位置 
   // 單列的寬度 
   // 535是jasepreReport報(bào)表column大的寬度 
   int columnWidth = 535 / fieldCount; 
   // 20,24,15是報(bào)表中已設(shè)置的，一定與之相同 
   final int columnHeadBandHeight = 20; 
   final int detailHeight = 24; 
   final int pagefootHeight = 15; 
 
   // 設(shè)置報(bào)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(); 
   // 繪制表頭 
   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("序號(hào)"); 
     columnHeadBand.addElement(staticText); 
     startX += columnWidth; 
    } else if ("pname".equals(printValue[idx])) { 
     JRDesignStaticText staticText = new JRDesignStaticText(); 
     staticText.setStyle(theaderStyle); 
     // 項(xiàng)目名稱的寬度是其它的寬度的2倍 
     staticText.setWidth(columnWidth * 2); 
     staticText.setY(0); 
     staticText.setX(startX); 
     staticText.setHeight(2 * columnHeadBandHeight); 
     staticText.setText("項(xiàng)目名稱"); 
     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("部門"); 
     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("已決策"); 
     columnHeadBand.addElement(staticText); 
     startX += columnWidth; 
    } else if ("pthrow".equals(printValue[idx])) { 
     // 投審會(huì)下面有兩列 
     JRDesignStaticText staticText = new JRDesignStaticText(); 
     staticText.setStyle(theaderStyle); 
     staticText.setWidth(columnWidth * 2); 
     staticText.setY(0); 
     staticText.setX(startX); 
     staticText.setHeight(columnHeadBandHeight); 
     staticText.setText("投審會(huì)"); 
     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])) { 
     // 投決會(huì)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("投決會(huì)"); 
     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("基金投資額"); 
     columnHeadBand.addElement(staticText); 
     startX += columnWidth; 
    } else if ("ploan".equals(printValue[idx])) { 
     // 投貸協(xié)同額下面有兩列 
     JRDesignStaticText staticText = new JRDesignStaticText(); 
     staticText.setStyle(theaderStyle); 
     staticText.setWidth(columnWidth * 2); 
     staticText.setY(0); 
     staticText.setX(startX); 
     staticText.setHeight(columnHeadBandHeight); 
     staticText.setText("投貸協(xié)同額"); 
     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("金額"); 
 
     staticText = new JRDesignStaticText(); 
     staticText.setStyle(theaderStyle); 
     columnHeadBand.addElement(staticText); 
     staticText.setWidth(columnWidth); 
     staticText.setY(columnHeadBandHeight); 
     staticText.setX(startX + columnWidth); 
     staticText.setHeight(columnHeadBandHeight); 
     staticText.setText("入庫情況"); 
     columnHeadBand.addElement(staticText); 
     startX += 2 * columnWidth; 
    } 
   } 
 
   // 繪制Detail部門 
   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(); 
   // 合計(jì)數(shù)據(jù)，本應(yīng)統(tǒng)計(jì)的 
   List<Object[]> pageCountList = new ArrayList<Object[]>(); 
   Object[] obj = new String[] { "合計(jì)", "15299", "", "", "67121", "92420", "155877", }; 
   pageCountList.add(obj); 
   obj = new String[] { "", "", "", "XXX小計(jì)", "", "24473", "16470", }; 
   pageCountList.add(obj); 
   obj = new String[] { "", "", "", "WWW小計(jì)", "", "7289", "1674", }; 
   pageCountList.add(obj); 
   obj = new String[] { "", "", "", "ZZZ小計(jì)", "", "32700", "13000", }; 
   pageCountList.add(obj); 
   obj = new String[] { "", "", "", "YYY小計(jì)", "", "12733", "120733", }; 
   pageCountList.add(obj); 
   obj = new String[] { "", "", "", "AAA小計(jì)", "", "2225", "120733", }; 
   pageCountList.add(obj); 
   obj = new String[] { "", "", "", "BBB小計(jì)", "", "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); 
    } 
   } 
 
   // 編譯報(bào)表 
   JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign); 
   String type = this.getRequest().getParameter("type");//pdf格式 
   JasperUtils.prepareReport(jasperReport, type); 
   // 報(bào)表數(shù)據(jù)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; 
 } 
 

本文標(biāo)題：怎么在Java中使用jasperReport對(duì)動(dòng)態(tài)列進(jìn)行打印-創(chuàng)新互聯(lián)
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