我使用 Apache POI 创建了一个批处理报告。我需要知道如何在两张纸上添加标题。我使用了 getHeader() ，但这为两个工作表添加了相同的标题，我需要为两个工作表添加不同的标题。我的代码如下。
Excel 编写器：
public class ExcelWriter {
Logger log = Logger.getLogger(ExcelWriter.class.getName());
private HSSFWorkbook excel;
public ExcelWriter() {
excel = new HSSFWorkbook();
}
public HSSFWorkbook getWorkbook() {
return excel;
}
public void writeExcelFile(String filename, String[] columns, Object[][] data, HSSFCellStyle[] styles,
HSSFCellStyle columnsStyle, String[] header, String[] footer) throws IOException {
FileOutputStream out = new FileOutputStream(filename);
HSSFSheet sheet = excel.createSheet("Daily Screening");
HSSFSheet sheet1 = excel.createSheet("Parcel Return");
int numHeaderRows = header.length;
createHeader(sheet,header,columns.length, 0);
createColumnHeaderRow(sheet,columns,numHeaderRows,columnsStyle);
int rowCtr1 = numHeaderRows;
for( int i = 0; i < data.length; i++) {
if (i > data.length -2)
++rowCtr1;
else
rowCtr1 = rowCtr1 + 2;
createRow(sheet, data[i], rowCtr1, styles);
}
int totalRows = rowCtr1 + 1;
createHeader(sheet1,footer,columns.length, totalRows);
excel.write(out);
out.close();
}
private void createHeader(HSSFSheet sheet1, String[] header, int columns, int rowNum) {
for( int i = 0; i < header.length ; i++ ) {
HSSFRow row = sheet1.createRow(i + rowNum);
HSSFCell cell = row.createCell((short) 0);
String text = header[i];
cell.setCellType(HSSFCell.CELL_TYPE_STRING);
cell.setCellValue(text);
HSSFCellStyle style = excel.createCellStyle();
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
HSSFFont arialBoldFont = excel.createFont();
arialBoldFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
arialBoldFont.setFontName("Arial");
arialBoldFont.setFontHeightInPoints((short) 12);
style.setFont(arialBoldFont);
if (!isEmpty(header[i]) && rowNum < 1) {
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
style.setFillForegroundColor(HSSFColor.GREY_25_PERCENT.index);
}
cell.setCellStyle(style);
sheet1.addMergedRegion( new Region(i+rowNum,(short)0,i+rowNum,(short)(columns-1)) );
}
}
private HSSFRow createColumnHeaderRow(HSSFSheet sheet, Object[] values, int rowNum, HSSFCellStyle style) {
HSSFCellStyle[] styles = new HSSFCellStyle[values.length];
for( int i = 0; i < values.length; i++ ) {
styles[i] = style;
}
return createRow(sheet,values,rowNum,styles);
}
private HSSFRow createRow(HSSFSheet sheet1, Object[] values, int rowNum, HSSFCellStyle[] styles) {
HSSFRow row = sheet1.createRow(rowNum);
for( int i = 0; i < values.length; i++ ) {
HSSFCell cell = row.createCell((short) i);
cell.setCellStyle(styles[i]);
try{
Object o = values[i];
if( o instanceof String ) {
String text = String.valueOf(o);
cell.setCellValue(text);
cell.setCellType(HSSFCell.CELL_TYPE_STRING);
}
else if (o instanceof Double) {
Double d = (Double) o;
cell.setCellValue(d.doubleValue());
cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
}
else if (o instanceof Integer) {
Integer in = (Integer)o;
cell.setCellValue(in.intValue());
}
else if (o instanceof Long) {
Long l = (Long)o;
cell.setCellValue(l.longValue());
cell.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
}
else if( o != null ) {
String text = String.valueOf(o);
cell.setCellValue(text);
cell.setCellType(HSSFCell.CELL_TYPE_STRING);
}
}
catch(Exception e) {
log.error(e.getMessage());
}
}
return row;
}
public boolean isEmpty(String str) {
if(str.equals(null) || str.equals(""))
return true;
else
return false;
}
}
报告生成器，包括页眉、页脚和列：
public class SummaryReportGenerator extends ReportGenerator {
Logger log = Logger.getLogger(SummaryReportGenerator.class.getName());
public SummaryReportGenerator(String reportDir, String filename) {
super( reportDir + filename + ".xls", reportDir + filename + ".pdf");
}
public String[] getColumnNames() {
String[] columnNames = {"ISC\nCode", "Total\nParcels", "Total\nParcel Hit\n Count",
"Filter Hit\n%", "Unanalyzed\nCount", "Unanalyzed\n%",
"Name\nMatch\nCount", "Name\nMatch\n%", "Pended\nCount",
"Pended\n%", "E 1 Sanction\nCountries\nCount", "E 1 Sanction\nCountries\n%", "Greater\nthat\n$2500\nCount", "Greater\nthat\n$2500\n%",
"YTD\nTotal Hit\nCount", "YTD\nLong Term\nPending", "YTD\nLong Term\n%"};
return columnNames;
}
public HSSFCellStyle getColumnsStyle(HSSFWorkbook wrkbk) {
HSSFCellStyle style = wrkbk.createCellStyle();
style.setWrapText(true);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
HSSFFont timesBoldFont = wrkbk.createFont();
timesBoldFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
timesBoldFont.setFontName("Arial");
style.setFont(timesBoldFont);
return style;
}
public Object[][] getData(Map map) {
int rows = map.size();// + 1 + // 1 blank row 1; // 1 row for the grand total;
int cols = getColumnNames().length;
Object[][] data = new Object[rows][cols];
int row = 0;
for (int i=0; i < map.size(); i++ ){
try{
SummaryBean bean = (SummaryBean)map.get(new Integer(i));
data[row][0] = bean.getIscCode();
data[row][1] = new Long(bean.getTotalParcelCtr());
data[row][2] = new Integer(bean.getTotalFilterHitCtr());
data[row][3] = bean.getFilterHitPrctg();
data[row][4] = new Integer(bean.getPendedHitCtr());
data[row][5] = bean.getPendedHitPrctg();
data[row][6] = new Integer(bean.getTrueHitCtr());
data[row][7] = new Integer(bean.getRetiredHitCtr());
data[row][8] = new Integer(bean.getSanctCntryCtr());
data[row][9] = new Integer(bean.getC25Ctr());
data[row][10] = new Integer(bean.getCnmCtr());
data[row][11] = new Integer(bean.getCndCtr());
data[row][12] = new Integer(bean.getCnlCtr());
data[row][13] = new Integer(bean.getCneCtr());
data[row][14] = new Integer(bean.getVndCtr());
data[row][15] = new Integer(bean.getCilCtr());
data[row][16] = new Integer(bean.getHndCtr());
data[row][17] = new Integer(bean.getCnrCtr());
++row;
}
catch(Exception e) {
log.error(e.getMessage());
}
}
return data;
}
public String[] getHeader(String startDate, String endDate) {
Date today = new Date();
String reportDateFormat = Utils.formatDateTime(today, "MM/dd/yyyyHH.mm.ss");
String nowStr = Utils.now(reportDateFormat);
String[] header = {"","EXCS Daily Screening Summary Report ","",
"for transactions processed for the calendar date range",
"from " + startDate + " to " + endDate,
"Report created on " + nowStr.substring(0,10)+ " at "
+ nowStr.substring(10)};
return header;
}
public HSSFCellStyle[] getStyles(HSSFWorkbook wrkbk) {
int columnSize = getColumnNames().length;
HSSFCellStyle[] styles = new HSSFCellStyle[columnSize];
HSSFDataFormat format = wrkbk.createDataFormat();
for (int i=0; i < columnSize; i++){
styles[i] = wrkbk.createCellStyle();
if (i == 0){
styles[i].setAlignment(HSSFCellStyle.ALIGN_LEFT);
}else{
styles[i].setAlignment(HSSFCellStyle.ALIGN_RIGHT);
}
if (i == 1 || i == 2){
styles[i].setDataFormat(format.getFormat("#,###,##0"));
}
HSSFFont timesFont = wrkbk.createFont();
timesFont.setFontName("Arial");
styles[i].setFont(timesFont);
}
return styles;
}
public String[] getFooter() {
String[] header = {"","Parcel Return Reason Code Reference","",
"DPM = Sender and/or recipient matches denied party",
"HND = Humanitarian exception not declared",
"CNM = Content not mailable under export laws",
"VND = Value of content not declared",
"CNR = Customer non-response",
"C25 = Content Value greater than $2500",
"CIL = Invalid license",
"C30 = More than one parcel in a calendar month",
"CNL = Content description not legible",
"CNE = Address on mailpiece not in English",
"RFN = Requires full sender and addressee names",
"DGS = Dangerous goods",
"R29 = RE-used 2976 or 2976A",
"ANE = PS Form 2976 or 2976A not in English",
"ICF = Incorrect Customs Declaration Form used",
"DPR = Declaration of purpose required",
"ITN = Internal Transaction Number (ITN), Export Exception/Exclusion Legend (ELL), or Proof of Filing Citation (PFC) is required",
"OTH = Other","",};
return header;
}
}
报告生成器抽象类
public void generateExcelReport(Map map, String startDate, String endDate) throws IOException {
ExcelWriter writer = new ExcelWriter();
writer.writeExcelFile( getXlsFilename(), getColumnNames(), getData(map),
getStyles(writer.getWorkbook()), getColumnsStyle(writer.getWorkbook()),
getHeader(startDate, endDate), getFooter());
报告驱动程序：
public class ReportDriver {
static Logger log = Logger.getLogger(ReportDriver.class.getName());
public static void main (String args[]){
if (args.length == 0) {
log.error("Usage - ReportDriver [Day|Week|Month|Year]");
System.exit(1);
}
String reportPeriod = args[0];
log.info("Begin Prior " + reportPeriod + " Report");
String dir = "c:\\excsbatch\\report\\";
Dates dates = new Dates();
dates.setDates(reportPeriod);
String startDate = dates.getStartDate();
String endDate = dates.getEndDate();
DateFormat dateFormat = new SimpleDateFormat("yyyy_MM_dd_HH_mm_ss");
Calendar cal = Calendar.getInstance();
String timeStamp = dateFormat.format(cal.getTime());
String fileName = "prior" + reportPeriod + "Report" + timeStamp;
SummaryDAO dao = new SummaryDAO();
Map map = dao.extractData(startDate, endDate);
SummaryReportGenerator report = new SummaryReportGenerator(dir, fileName);
try {
report.generateExcelReport(map, startDate, endDate);
}
catch(Exception e) {
log.error(e.getMessage());
System.exit(2);
}
log.info("End Prior " + reportPeriod + " Report");
}
}