Java tutorial
/* ==================================================================== Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. ==================================================================== */ package test.poi; import java.io.FileOutputStream; import java.util.HashMap; import java.util.Map; import org.apache.poi.hssf.usermodel.HSSFFont; 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.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.ss.util.CellRangeAddress; import org.apache.poi.ss.util.RegionUtil; /** * A weekly timesheet created using Apache POI. * Usage: * TimesheetDemo -xls|xlsx * * @author Yegor Kozlov */ public class MyExcelDemo { private static final String[] titles = { "{'title':'??'}", "{'title':'??'}", "{'title':''}", "{'title':'??'}", "{'title':''}", "{'title':'','children':[{'title':''},{'title':''}]}", "{'title':'','children':[{'title':''},{'title':''},{'title':''}]}", "{'title':'?'}", "{'title':'?'}" }; public static void main(String[] args) throws Exception { Workbook wb = new HSSFWorkbook(); Map<String, CellStyle> styles = createStyles(wb); Sheet sheet = wb.createSheet("Timesheet"); PrintSetup printSetup = sheet.getPrintSetup(); printSetup.setLandscape(true); sheet.setFitToPage(true); sheet.setHorizontallyCenter(true); //title row Row titleRow = sheet.createRow(0); titleRow.setHeightInPoints(45); Cell titleCell = titleRow.createCell(0); titleCell.setCellValue("XX????20130506-20140503"); titleCell.setCellStyle(styles.get("title")); sheet.addMergedRegion(CellRangeAddress.valueOf("$A$1:$O$1")); //header row Row headerRow = sheet.createRow(1); sheet.setDefaultColumnWidth(20); headerRow.setHeightInPoints(20); Cell headerCell; for (int i = 1; i < titles.length; i++) { headerCell = headerRow.createCell(i); headerCell.setCellValue(titles[i - 1]); CellRangeAddress cra = new CellRangeAddress(1, 2, i, i); sheet.addMergedRegion(cra); setBorder(cra, sheet, wb); headerCell.setCellStyle(styles.get("header")); } // Write the output to a file String file = "E:\\test.xls"; // if(wb instanceof XSSFWorkbook) file += "x"; FileOutputStream out = new FileOutputStream(file); wb.write(out); out.close(); } public static void setBorder(CellRangeAddress cellRangeAddress, Sheet sheet, Workbook wb) throws Exception { RegionUtil.setBorderLeft(1, cellRangeAddress, sheet, wb); RegionUtil.setBorderBottom(1, cellRangeAddress, sheet, wb); RegionUtil.setBorderRight(1, cellRangeAddress, sheet, wb); RegionUtil.setBorderTop(1, cellRangeAddress, sheet, wb); } /** * Create a library of cell styles */ private static Map<String, CellStyle> createStyles(Workbook wb) { Map<String, CellStyle> styles = new HashMap<String, CellStyle>(); CellStyle style; Font titleFont = wb.createFont(); titleFont.setFontHeightInPoints((short) 18); titleFont.setBoldweight(Font.BOLDWEIGHT_BOLD); style = wb.createCellStyle(); style.setAlignment(CellStyle.ALIGN_CENTER); style.setVerticalAlignment(CellStyle.VERTICAL_CENTER); style.setFont(titleFont); styles.put("title", style); Font headerFont = wb.createFont(); headerFont.setFontHeightInPoints((short) 11); headerFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); headerFont.setColor(IndexedColors.BLACK.getIndex()); style = wb.createCellStyle(); style.setAlignment(CellStyle.ALIGN_CENTER); style.setVerticalAlignment(CellStyle.VERTICAL_CENTER); style.setFillForegroundColor(IndexedColors.WHITE.getIndex()); style.setFillPattern(CellStyle.SOLID_FOREGROUND); style.setFont(headerFont); // style.setWrapText(true); style.setBorderRight(CellStyle.BORDER_THIN); style.setRightBorderColor(IndexedColors.BLACK.getIndex()); style.setBorderLeft(CellStyle.BORDER_THIN); style.setLeftBorderColor(IndexedColors.BLACK.getIndex()); style.setBorderTop(CellStyle.BORDER_THIN); style.setTopBorderColor(IndexedColors.BLACK.getIndex()); style.setBorderBottom(CellStyle.BORDER_THIN); style.setBottomBorderColor(IndexedColors.BLACK.getIndex()); styles.put("header", style); style = wb.createCellStyle(); style.setAlignment(CellStyle.ALIGN_CENTER); style.setWrapText(true); style.setBorderRight(CellStyle.BORDER_THIN); style.setRightBorderColor(IndexedColors.BLACK.getIndex()); style.setBorderLeft(CellStyle.BORDER_THIN); style.setLeftBorderColor(IndexedColors.BLACK.getIndex()); style.setBorderTop(CellStyle.BORDER_THIN); style.setTopBorderColor(IndexedColors.BLACK.getIndex()); style.setBorderBottom(CellStyle.BORDER_THIN); style.setBottomBorderColor(IndexedColors.BLACK.getIndex()); styles.put("cell", style); style = wb.createCellStyle(); style.setAlignment(CellStyle.ALIGN_CENTER); style.setVerticalAlignment(CellStyle.VERTICAL_CENTER); style.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex()); style.setFillPattern(CellStyle.SOLID_FOREGROUND); style.setDataFormat(wb.createDataFormat().getFormat("0.00")); styles.put("formula", style); style = wb.createCellStyle(); style.setAlignment(CellStyle.ALIGN_CENTER); style.setVerticalAlignment(CellStyle.VERTICAL_CENTER); style.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.getIndex()); style.setFillPattern(CellStyle.SOLID_FOREGROUND); style.setDataFormat(wb.createDataFormat().getFormat("0.00")); styles.put("formula_2", style); return styles; } }