如何使用Apache POI打印（通过打印机）Excel表格

我想通过连接的打印机打印使用Apache POI创build的电子表格。 怎么做？ 一年前我问过类似的问题，我不得不说：我不是说打开.xls文件，并使用ctrl+p ; ）。

该表是：

 import java.io.FileOutputStream; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.HashMap; import java.util.Locale; import java.util.Map; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.CellStyle; import org.apache.poi.ss.usermodel.DataFormat; import org.apache.poi.ss.usermodel.Font; import org.apache.poi.ss.usermodel.IndexedColors; import org.apache.poi.ss.usermodel.PrintSetup; import org.apache.poi.ss.usermodel.Row; import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.xssf.usermodel.XSSFWorkbook; public class BusinessPlan { private static SimpleDateFormat fmt = new SimpleDateFormat("dd-MMM", Locale.US); private static final String[] titles = { "ID", "Project Name", "Owner", "Days", "Start", "End" }; //sample data to fill the sheet. private static final String[][] data = { { "1.0", "Marketing Research Tactical Plan", "J. Dow", "70", "9-Jul", null, "x", "x", "x", "x", "x", "x", "x", "x", "x", "x", "x" }, null, { "1.1", "Scope Definition Phase", "J. Dow", "10", "9-Jul", null, "x", "x", null, null, null, null, null, null, null, null, null }, { "1.1.1", "Define research objectives", "J. Dow", "3", "9-Jul", null, "x", null, null, null, null, null, null, null, null, null, null }, { "1.1.2", "Define research requirements", "S. Jones", "7", "10-Jul", null, "x", "x", null, null, null, null, null, null, null, null, null }, { "1.1.3", "Determine in-house resource or hire vendor", "J. Dow", "2", "15-Jul", null, "x", "x", null, null, null, null, null, null, null, null, null }, null, { "1.2", "Vendor Selection Phase", "J. Dow", "19", "19-Jul", null, null, "x", "x", "x", "x", null, null, null, null, null, null }, { "1.2.1", "Define vendor selection criteria", "J. Dow", "3", "19-Jul", null, null, "x", null, null, null, null, null, null, null, null, null }, { "1.2.2", "Develop vendor selection questionnaire", "S. Jones, T. Wates", "2", "22-Jul", null, null, "x", "x", null, null, null, null, null, null, null, null }, { "1.2.3", "Develop Statement of Work", "S. Jones", "4", "26-Jul", null, null, null, "x", "x", null, null, null, null, null, null, null }, { "1.2.4", "Evaluate proposal", "J. Dow, S. Jones", "4", "2-Aug", null, null, null, null, "x", "x", null, null, null, null, null, null }, { "1.2.5", "Select vendor", "J. Dow", "1", "6-Aug", null, null, null, null, null, "x", null, null, null, null, null, null }, null, { "1.3", "Research Phase", "G. Lee", "47", "9-Aug", null, null, null, null, null, "x", "x", "x", "x", "x", "x", "x" }, { "1.3.1", "Develop market research information needs questionnaire", "G. Lee", "2", "9-Aug", null, null, null, null, null, "x", null, null, null, null, null, null }, { "1.3.2", "Interview marketing group for market research needs", "G. Lee", "2", "11-Aug", null, null, null, null, null, "x", "x", null, null, null, null, null }, { "1.3.3", "Document information needs", "G. Lee, S. Jones", "1", "13-Aug", null, null, null, null, null, null, "x", null, null, null, null, null }, }; /** * create a library of cell styles */ private static Map<String, CellStyle> createStyles(Workbook wb) { Map<String, CellStyle> styles = new HashMap<String, CellStyle>(); DataFormat df = wb.createDataFormat(); CellStyle style; Font headerFont = wb.createFont(); headerFont.setBoldweight(Font.BOLDWEIGHT_BOLD); style = createBorderedStyle(wb); style.setAlignment(CellStyle.ALIGN_CENTER); style.setFillForegroundColor(IndexedColors.LIGHT_CORNFLOWER_BLUE.getIndex()); style.setFillPattern(CellStyle.SOLID_FOREGROUND); style.setFont(headerFont); styles.put("header", style); style = createBorderedStyle(wb); style.setAlignment(CellStyle.ALIGN_CENTER); style.setFillForegroundColor(IndexedColors.LIGHT_CORNFLOWER_BLUE.getIndex()); style.setFillPattern(CellStyle.SOLID_FOREGROUND); style.setFont(headerFont); style.setDataFormat(df.getFormat("d-mmm")); styles.put("header_date", style); Font font1 = wb.createFont(); font1.setBoldweight(Font.BOLDWEIGHT_BOLD); style = createBorderedStyle(wb); style.setAlignment(CellStyle.ALIGN_LEFT); style.setFont(font1); styles.put("cell_b", style); style = createBorderedStyle(wb); style.setAlignment(CellStyle.ALIGN_CENTER); style.setFont(font1); styles.put("cell_b_centered", style); style = createBorderedStyle(wb); style.setAlignment(CellStyle.ALIGN_RIGHT); style.setFont(font1); style.setDataFormat(df.getFormat("d-mmm")); styles.put("cell_b_date", style); style = createBorderedStyle(wb); style.setAlignment(CellStyle.ALIGN_RIGHT); style.setFont(font1); style.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex()); style.setFillPattern(CellStyle.SOLID_FOREGROUND); style.setDataFormat(df.getFormat("d-mmm")); styles.put("cell_g", style); Font font2 = wb.createFont(); font2.setColor(IndexedColors.BLUE.getIndex()); font2.setBoldweight(Font.BOLDWEIGHT_BOLD); style = createBorderedStyle(wb); style.setAlignment(CellStyle.ALIGN_LEFT); style.setFont(font2); styles.put("cell_bb", style); style = createBorderedStyle(wb); style.setAlignment(CellStyle.ALIGN_RIGHT); style.setFont(font1); style.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex()); style.setFillPattern(CellStyle.SOLID_FOREGROUND); style.setDataFormat(df.getFormat("d-mmm")); styles.put("cell_bg", style); Font font3 = wb.createFont(); font3.setFontHeightInPoints((short) 14); font3.setColor(IndexedColors.DARK_BLUE.getIndex()); font3.setBoldweight(Font.BOLDWEIGHT_BOLD); style = createBorderedStyle(wb); style.setAlignment(CellStyle.ALIGN_LEFT); style.setFont(font3); style.setWrapText(true); styles.put("cell_h", style); style = createBorderedStyle(wb); style.setAlignment(CellStyle.ALIGN_LEFT); style.setWrapText(true); styles.put("cell_normal", style); style = createBorderedStyle(wb); style.setAlignment(CellStyle.ALIGN_CENTER); style.setWrapText(true); styles.put("cell_normal_centered", style); style = createBorderedStyle(wb); style.setAlignment(CellStyle.ALIGN_RIGHT); style.setWrapText(true); style.setDataFormat(df.getFormat("d-mmm")); styles.put("cell_normal_date", style); style = createBorderedStyle(wb); style.setAlignment(CellStyle.ALIGN_LEFT); style.setIndention((short) 1); style.setWrapText(true); styles.put("cell_indented", style); style = createBorderedStyle(wb); style.setFillForegroundColor(IndexedColors.BLUE.getIndex()); style.setFillPattern(CellStyle.SOLID_FOREGROUND); styles.put("cell_blue", style); return styles; } private static CellStyle createBorderedStyle(Workbook wb) { CellStyle style = wb.createCellStyle(); style.setBorderRight(CellStyle.BORDER_THIN); style.setRightBorderColor(IndexedColors.BLACK.getIndex()); style.setBorderBottom(CellStyle.BORDER_THIN); style.setBottomBorderColor(IndexedColors.BLACK.getIndex()); style.setBorderLeft(CellStyle.BORDER_THIN); style.setLeftBorderColor(IndexedColors.BLACK.getIndex()); style.setBorderTop(CellStyle.BORDER_THIN); style.setTopBorderColor(IndexedColors.BLACK.getIndex()); return style; } public static void main(String[] args) throws Exception { Workbook wb; if (args.length > 0 && args[0].equals("-xls")) wb = new HSSFWorkbook(); else wb = new XSSFWorkbook(); Map<String, CellStyle> styles = createStyles(wb);//style sa wkladane do mapy Sheet sheet = wb.createSheet("Business Plan"); //turn off gridlines sheet.setDisplayGridlines(false); sheet.setPrintGridlines(false); sheet.setFitToPage(true); sheet.setHorizontallyCenter(true); PrintSetup printSetup = sheet.getPrintSetup(); printSetup.setLandscape(true); //the following three statements are required only for HSSF sheet.setAutobreaks(true); printSetup.setFitHeight((short) 1); printSetup.setFitWidth((short) 1); //the header row: centered text in 48pt font Row headerRow = sheet.createRow(0); headerRow.setHeightInPoints(12.75f); for (int i = 0; i < titles.length; i++) { Cell cell = headerRow.createCell(i); cell.setCellValue(titles[i]); cell.setCellStyle(styles.get("header")); } //columns for 11 weeks starting from 9-Jul Calendar calendar = Calendar.getInstance(); int year = calendar.get(Calendar.YEAR); calendar.setTime(fmt.parse("9-Jul")); calendar.set(Calendar.YEAR, year); for (int i = 0; i < 11; i++) { Cell cell = headerRow.createCell(titles.length + i); cell.setCellValue(calendar); cell.setCellStyle(styles.get("header_date")); calendar.roll(Calendar.WEEK_OF_YEAR, true); } //freeze the first row sheet.createFreezePane(0, 1); Row row; Cell cell; int rownum = 1; for (int i = 0; i < data.length; i++, rownum++) { row = sheet.createRow(rownum); if (data[i] == null) continue; for (int j = 0; j < data[i].length; j++) { cell = row.createCell(j); String styleName; boolean isHeader = i == 0 || data[i - 1] == null; switch (j) { case 0: if (isHeader) { styleName = "cell_b"; cell.setCellValue(Double.parseDouble(data[i][j])); } else { styleName = "cell_normal"; cell.setCellValue(data[i][j]); } break; case 1: if (isHeader) { styleName = i == 0 ? "cell_h" : "cell_bb"; } else { styleName = "cell_indented"; } cell.setCellValue(data[i][j]); break; case 2: styleName = isHeader ? "cell_b" : "cell_normal"; cell.setCellValue(data[i][j]); break; case 3: styleName = isHeader ? "cell_b_centered" : "cell_normal_centered"; cell.setCellValue(Integer.parseInt(data[i][j])); break; case 4: { calendar.setTime(fmt.parse(data[i][j])); calendar.set(Calendar.YEAR, year); cell.setCellValue(calendar); styleName = isHeader ? "cell_b_date" : "cell_normal_date"; break; } case 5: { int r = rownum + 1; String fmla = "IF(AND(D" + r + ",E" + r + "),E" + r + "+D" + r + ",\"\")"; cell.setCellFormula(fmla); styleName = isHeader ? "cell_bg" : "cell_g"; break; } default: styleName = data[i][j] != null ? "cell_blue" : "cell_normal"; } cell.setCellStyle(styles.get(styleName)); } } //group rows for each phase, row numbers are 0-based sheet.groupRow(4, 6); sheet.groupRow(9, 13); sheet.groupRow(16, 18); //set column widths, the width is measured in units of 1/256th of a character width sheet.setColumnWidth(0, 256 * 6); sheet.setColumnWidth(1, 256 * 33); sheet.setColumnWidth(2, 256 * 20); sheet.setZoom(3, 4); // Write the output to a file String file = "businessplan.xls"; if (wb instanceof XSSFWorkbook) file += "x"; FileOutputStream out = new FileOutputStream(file); wb.write(out); out.close(); } }