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