import java.io.FileNotFoundException;  import java.io.FileOutputStream;  import java.io.IOException;  import java.util.ArrayList;  import java.util.List;    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.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.WorkbookUtil;  import org.apache.poi.xssf.usermodel.XSSFWorkbook;    public class ExcelCreate {     public static void main(String[] args) {    Workbook wb = createWorkbook();    CellStyle style = wb.createCellStyle();    List<String> sheetNames = new ArrayList<String>();    sheetNames.add("mleo");    sheetNames.add("chochy");    List<Sheet> sheets = createSheet(wb, sheetNames);    Row row = createRow(sheets.get(0), 6);    Cell cell = createCell(row, 1);    Cell cell1 = createCell(row, 2);    cell = addValue(cell, "mleo");    cell1 = addValue(cell1, "回忆中的明天");       style = styleFont(wb, style, Font.BOLDWEIGHT_BOLD, IndexedColors.BLUE.getIndex(), (short)20, "微软雅黑");        style = styleForegroundColor(style, IndexedColors.AQUA.getIndex());        style = styleAlignment(style, CellStyle.ALIGN_CENTER, CellStyle.VERTICAL_CENTER);    style = styleFrame(style);        addStyle(cell, style);    addStyle(cell1, style);        mergeCells(sheets.get(0), 6, 6, 1, 6);        columnWidth(sheets.get(0), 2, 50);        writeWorkbook(wb, "workbook.xlsx");      System.out.println("&&&&&&%%%&&&&&");   }     /**    * 写入工作簿    *     * @param wb    * @param path    */   public static void writeWorkbook(Workbook wb, String pathBookName) {    FileOutputStream fileOut = null;    try {     fileOut = new FileOutputStream(pathBookName);     wb.write(fileOut);    } catch (FileNotFoundException e) {     e.printStackTrace();    } catch (IOException e) {     e.printStackTrace();    } finally {     try {      fileOut.close();     } catch (IOException e) {      e.printStackTrace();     }    }   }     /**    * 创建工作簿    *     * @return Workbook    */   public static Workbook createWorkbook() {    Workbook wb = new XSSFWorkbook();    return wb;   }     /**    * 创建工作表    *     * @param sheetNames    * @param wb    */   public static List<Sheet> createSheet(Workbook wb, List<String> sheetNames) {    List<Sheet> sheets = new ArrayList<Sheet>();    for (String sheetName : sheetNames) {     // 一个安全的方式来创建有效的名称，这个工具替换无效字符用空格（''）     String safeName = WorkbookUtil.createSafeSheetName(sheetName);     Sheet sheet = wb.createSheet(safeName);     sheets.add(sheet);    }    return sheets;   }     /**    * 创建行    *     * @param sheet    * @param rowIndex    * @return    */   public static Row createRow(Sheet sheet, int rowIndex) {    Row row = sheet.createRow(rowIndex);    return row;   }     /**    * 创建单元格    *     * @param row    * @param cellIndex    * @return Cell    */   public static Cell createCell(Row row, int cellIndex) {    Cell cell = row.createCell(cellIndex);    return cell;   }     /**    * 单元格赋值    *     * @param cell    * @param cellValue    * @return Cell    */   public static Cell addValue(Cell cell, String cellValue) {    cell.setCellValue(cellValue);    return cell;   }     /**    * 添加样试    *     * @param cell    * @param style    * @return    */   public static Cell addStyle(Cell cell, CellStyle style) {    cell.setCellStyle(style);    return cell;   }     /**    * 设置字体颜色    *     * @param wb    * @param style    * @param fontBlod    *            字体粗细    * @param fontColor    *            字体颜色    * @param fontHeight    *            字体大小    * @param fontName    *            字体名字    * @return    */   public static CellStyle styleFont(Workbook wb, CellStyle style,     short fontBlod, short fontColor, short fontHeight, String fontName) {    Font font = wb.createFont();    font.setBoldweight(fontBlod);// 粗体    font.setColor(fontColor);// 字体颜色    font.setFontHeightInPoints(fontHeight);// 字体大小    font.setFontName(fontName);// 字体名字    style.setFont(font);    return style;   }     /**    * 设置背景色    *     * @param style    * @param foregroundCorlor    * @return CellStyle    */   public static CellStyle styleForegroundColor(CellStyle style,     short foregroundCorlor) {    style.setFillForegroundColor(foregroundCorlor);    style.setFillPattern(CellStyle.SOLID_FOREGROUND);    return style;   }     /**    * 对齐方式    *     * @param style    * @param halign    * @param valign    * @return CellStyle    */   public static CellStyle styleAlignment(CellStyle style, short halign,     short valign) {    style.setAlignment(halign);    style.setVerticalAlignment(valign);    return style;   }      /**    * 单元格边框    * @param style    * @return CellStyle    */   public static CellStyle styleFrame(CellStyle style) {    style.setBorderBottom(CellStyle.BORDER_THIN);    style.setBottomBorderColor(IndexedColors.BLACK.getIndex());    style.setBorderLeft(CellStyle.BORDER_THIN);    style.setLeftBorderColor(IndexedColors.BLACK.getIndex());    style.setBorderRight(CellStyle.BORDER_THIN);    style.setRightBorderColor(IndexedColors.BLACK.getIndex());    style.setBorderTop(CellStyle.BORDER_THIN);    style.setTopBorderColor(IndexedColors.BLACK.getIndex());    return style;   }         /**    * 合并单元格    * @param sheet    * @param firstRow    * @param lastRow    * @param firstColumn    * @param lastColumn    */   public static void mergeCells(Sheet sheet,int firstRow,int lastRow,int firstColumn,int lastColumn) {    sheet.addMergedRegion(new CellRangeAddress(firstRow, lastRow, firstColumn, lastColumn));   }     /**    * 设置列宽度    * @param sheet    * @param columnIndex    * @param columnWidth    */   public static void columnWidth(Sheet sheet,int columnIndex,int columnWidth) {    sheet.setColumnWidth(columnIndex, 500*columnWidth);   }  }