我创建动态报告为 JasperDesign ，每次都有不同的列数。
有时列数太多，无法在一个页面上显示。
我想在打印时将这些额外的列加上前两列添加到新页面。
我是通过columnHeaderband.setSplitType(JRBand.SPLIT_TYPE_IMMEDIATE);
我使用 JasperReports 5.4.5 和 Java 1.7
任何一个人都知道该怎么做？
public class CarPlanDynamicReportCreator {
private static JRDataSource dataSource;
private static List<Map<String, String>> listOfExtractedMap;
private static final Boolean EMPTY_BAND = true;
private static List<String> fieldNameList;
private static List<String> remarkList;
public static void compile(DefaultTableModel tableModel, String title, String name, String id) throws JRException {
dataSource = createReportDataSource(tableModel);
JasperDesign jasperDesign = getJasperDesign(tableModel);
Map<String, Object> parameters = retrieveParameter(title, name, id);
JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign);
JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, parameters, dataSource);
Report report = new Report(jasperPrint);
report.viewWithMaximumWindowSize();
}
public static JasperDesign getJasperDesign(DefaultTableModel tableModel) throws JRException {
//JasperDesign
JasperDesign jasperDesign = new JasperDesign();
jasperDesign.setName("The dynamically generated report");
jasperDesign.setPageWidth(842);
jasperDesign.setPageHeight(595);
jasperDesign.setOrientation(JRReport.ORIENTATION_LANDSCAPE);
jasperDesign.setColumnWidth(802);
jasperDesign.setColumnSpacing(2);
jasperDesign.setLeftMargin(20);
jasperDesign.setRightMargin(20);
jasperDesign.setTopMargin(20);
jasperDesign.setBottomMargin(20);
jasperDesign.setTitleNewPage(false);
jasperDesign.setFloatColumnFooter(true);
jasperDesign.setSummaryNewPage(false);
jasperDesign.addStyle(JasperDesignUtil.retrieveNormalStyle());
jasperDesign.addStyle(JasperDesignUtil.retrieveBoldStyle());
jasperDesign.addStyle(JasperDesignUtil.retrieveItalicStyle());
//Parameters
JasperDesignUtil.addParameters(jasperDesign, tableModel);
//Fields
JasperDesignUtil.addFields(jasperDesign, tableModel, fieldNameList);
//Variables
JasperDesignUtil.addVariables(jasperDesign, tableModel);
//Page header
JasperDesignUtil.addPageHeader(jasperDesign, tableModel, !EMPTY_BAND);
//Column header
JasperDesignUtil.addColumnHeader(jasperDesign, tableModel, !EMPTY_BAND);
//Detail band
JasperDesignUtil.addDetail(jasperDesign, tableModel, listOfExtractedMap, !EMPTY_BAND);
//Page footer
JasperDesignUtil.addPageFooter(jasperDesign, tableModel, !EMPTY_BAND);
//Summary
JasperDesignUtil.addSummary(jasperDesign, tableModel, remarkList, !EMPTY_BAND);
return jasperDesign;
}
private static JRDataSource createReportDataSource(DefaultTableModel tableModel) {
Map[] reportRows = initializeMapArray(tableModel);
return new JRMapArrayDataSource(reportRows);
}
public static Map<String, Object> retrieveParameter(String title, String name, String id) {
Map<String, Object> parameterMap = GenericsUtil.makeMap();
parameterMap.put("TITLE", title);
parameterMap.put("NAME", patient);
parameterMap.put("ID", patientId);
return parameterMap;
}
}
我的工具类：
public class JasperDesignUtil {
private static JRDesignBand band;
private static JRDesignField field;
private static JRDesignTextField textField;
private static JRDesignStaticText staticText;
private static JRDesignExpression expression;
// add Parameters
public static void addParameters(JasperDesign jasperDesign, DefaultTableModel tableModel) throws JRException {
JRDesignParameter parameter = new JRDesignParameter();
parameter.setName("TITLE");
parameter.setValueClass(java.lang.String.class);
JRDesignExpression expression = new JRDesignExpression();
expression.setText("");
expression.setValueClass(java.lang.String.class);
parameter.setDefaultValueExpression(expression);
jasperDesign.addParameter(parameter);
parameter = new JRDesignParameter();
parameter.setName("NAME");
parameter.setValueClass(java.lang.String.class);
expression = new JRDesignExpression();
expression.setText("");
expression.setValueClass(java.lang.String.class);
parameter.setDefaultValueExpression(expression);
jasperDesign.addParameter(parameter);
parameter = new JRDesignParameter();
parameter.setName("ID");
parameter.setValueClass(java.lang.String.class);
expression = new JRDesignExpression();
expression.setText("");
expression.setValueClass(java.lang.String.class);
parameter.setDefaultValueExpression(expression);
jasperDesign.addParameter(parameter);
}
// Add Fields
public static void addFields(JasperDesign jasperDesign, DefaultTableModel tableModel, List<String> fieldsName) throws JRException {
if (!fieldsName.isEmpty()) {
for (String name : fieldsName) {
field = new JRDesignField();
field.setName(name.replaceAll("\n", " "));
field.setValueClass(String.class);
jasperDesign.addField(field);
}
}
}
// Add Variables
public static void addVariables(JasperDesign jasperDesign, DefaultTableModel tableModel) throws JRException {
variable = new JRDesignVariable();
variable.setName("COLUMNS");
variable.setValueClass(java.lang.Integer.class);
variable.setCalculation(JRVariable.CALCULATION_COUNT);
expression = new JRDesignExpression();
expression.setValueClass(java.lang.Integer.class);
expression.setText("$V{COLUMN_COUNT}+1");
variable.setInitialValueExpression(expression);
variable.setResetType(JRVariable.RESET_TYPE_PAGE);
jasperDesign.addVariable(variable);
}
// Add ColumnHeader
public static void addColumnHeader(JasperDesign jasperDesign, DefaultTableModel tableModel, Boolean emptyBand) throws JRException {
if (emptyBand)
jasperDesign.setColumnHeader(retrieveEmptyBand(jasperDesign, 5));
else {
band = new JRDesignBand();
band.setHeight(25);
band.setSplitType(JRBand.SPLIT_TYPE_STRETCH);
int headerPosition = 0;
int columnCounter = 0;
for (JRField field : jasperDesign.getFields()) {
String fieldValue = field.getName();
String[] values = fieldValue.split(" ");
if (values.length != 1) {
String date = values[0];
String time = values[1];
fieldValue = "<html>".concat(date).concat("<BR>").concat(time).concat("</html>");
} else
fieldValue = "<html>".concat(fieldValue).concat("</html>");
int fieldLength = fieldValue.length();
headerPosition = columnCounter == 0 ? headerPosition : (columnCounter == 1 ? headerPosition + 100 : headerPosition + fieldLength);
JRDesignStaticText headerStaticText = new JRDesignStaticText();
headerStaticText.setX(headerPosition);
headerStaticText.setY(0);
headerStaticText.setWidth(columnCounter == 0 ? 100 : (columnCounter == 1 ? 34 : fieldLength + 7));
headerStaticText.setHeight(band.getHeight());
headerStaticText.setMode(JRElement.MODE_TRANSPARENT);
headerStaticText.setText(fieldValue);
headerStaticText.setPrintRepeatedValues(true);
headerStaticText.setPositionType(JRElement.POSITION_TYPE_FIX_RELATIVE_TO_TOP);
headerStaticText.setFontSize(8);
headerStaticText.setBold(true);
headerStaticText.setHorizontalAlignment(JRAlignment.HORIZONTAL_ALIGN_CENTER);
headerStaticText.setVerticalAlignment(JRAlignment.VERTICAL_ALIGN_MIDDLE);
headerStaticText.setMarkup("html");
headerStaticText.getLineBox().setLeftPadding(2);
headerStaticText.getLineBox().setRightPadding(2);
columnCounter++;
band.addElement(headerStaticText);
}
jasperDesign.setColumnHeader(band);
}
}
// Add Detail
public static void addDetail(JasperDesign jasperDesign, DefaultTableModel tableModel, List<Map<String, String>> maps, Boolean emptyBand) throws JRException {
if (emptyBand)
((JRDesignSection) jasperDesign.getDetailSection()).addBand(retrieveEmptyBand(jasperDesign, 5));
else {
band = new JRDesignBand();
band.setHeight(16);
int position = 0;
Map<String, String> headerMap = maps.get(0);
int columnCounter = 0;
for (Map.Entry<String, String> entry : headerMap.entrySet()) {
//creating cell field on the detail band
String cellValue = "$F{".concat(entry.getKey().replaceAll("\n", " ")).concat("}");
int cellLength = cellValue.length();
position = columnCounter == 0 ? position : (columnCounter == 1 ? position + 100 : position + 27);
JRDesignTextField cellTextField = new JRDesignTextField();
cellTextField.setX(position);
cellTextField.setY(0);
cellTextField.setWidth(columnCounter == 0 ? 100 : (columnCounter == 1 ? 34 : 27));
cellTextField.setHeight(band.getHeight());
cellTextField.setPrintRepeatedValues(true);
cellTextField.setPositionType(JRElement.POSITION_TYPE_FIX_RELATIVE_TO_TOP);
cellTextField.setFontSize(8);
cellTextField.setHorizontalAlignment(JRAlignment.HORIZONTAL_ALIGN_CENTER);
cellTextField.setHorizontalAlignment(columnCounter == 0 ? JRAlignment.HORIZONTAL_ALIGN_LEFT : JRAlignment.HORIZONTAL_ALIGN_CENTER);
cellTextField.setVerticalAlignment(JRAlignment.VERTICAL_ALIGN_MIDDLE);
cellTextField.setStretchType(JRElement.STRETCH_TYPE_RELATIVE_TO_TALLEST_OBJECT);
cellTextField.setStretchWithOverflow(true);
cellTextField.setPositionType(JRElement.POSITION_TYPE_FLOAT);
JRDesignExpression cellExpression = new JRDesignExpression();
cellExpression.setValueClass(String.class);
cellExpression.setText(cellValue);
cellTextField.setExpression(cellExpression);
if (columnCounter == 0)
cellTextField.getLineBox().getRightPen().setLineWidth(1);
if (columnCounter != 0) {
cellTextField.setBold(true);
if (columnCounter % 2 != 0) {
cellTextField.setBackcolor(UIWebLook.secondary_4);
cellTextField.setMode(JRElement.MODE_OPAQUE);
}
}
band.addElement(cellTextField);
columnCounter++;
}
band.addElement(retrieveLine(0, 0, jasperDesign.getColumnWidth(), 0, JRGraphicElement.FILL_SOLID));
((JRDesignSection) jasperDesign.getDetailSection()).addBand(band);
}
}
private static JRDesignBand retrieveEmptyBand(JasperDesign jasperDesign, int height) {
band = new JRDesignBand();
band.setHeight(height);
band.addElement(retrieveLine(0, 0, jasperDesign.getColumnWidth(), 0, JRGraphicElement.FILL_SOLID));
return band;
}
public static JRDesignElement retrieveLine(int positionX, int positionY, int width, int height, @Nullable Byte fill) {
JRDesignLine line = new JRDesignLine();
line.setX(positionX);
line.setY(positionY);
line.setWidth(width);
line.setHeight(height);
line.setBackcolor(Color.white);
line.setForecolor(Color.black);
line.setPositionType(JRElement.POSITION_TYPE_FLOAT);
line.setFill(fill == null ? JRGraphicElement.PEN_NONE : fill);
return line;
}
}
答案 0 :(得分：0)
使用子报告，这是最好的方法。