Java给Excel设置单元格格式

maven 依赖

<dependency>
    <groupId>org.apache.poigroupId>
    <artifactId>poiartifactId>
    <version>5.2.3version>
dependency>
<dependency>
    <groupId>org.apache.poigroupId>
    <artifactId>poi-ooxmlartifactId>
    <version>5.2.3version>
dependency>

<dependency>
    <groupId>commons-iogroupId>
    <artifactId>commons-ioartifactId>
    <version>2.11.0version>
dependency>



<dependency>
    <groupId>org.apache.logging.log4jgroupId>
    <artifactId>log4j-apiartifactId>
    <version>2.15.0version>
dependency>
<dependency>
    <groupId>org.apache.logging.log4jgroupId>
    <artifactId>log4j-coreartifactId>
    <version>2.15.0version>
dependency>
<dependency>
    <groupId>org.apache.logging.log4jgroupId>
    <artifactId>log4j-slf4j-implartifactId>
    <version>2.15.0version>
dependency>

字体样式

public static Font demoFont(Workbook workbook) {
    Font font = workbook.createFont();
    font.setFontName("等线"); // 字体
    font.setFontHeightInPoints((short) 14);// 字号
    font.setBold(true);// 加粗
    font.setColor(IndexedColors.BLACK.getIndex());// 颜色
    font.setItalic(true);// 斜体
    font.setStrikeout(true);// 使用划线
    return font;
}

单元格样式

public static CellStyle demoStyle(Workbook workbook) {
    CellStyle cellStyle = workbook.createCellStyle();
    cellStyle.setFont(demoFont(workbook)); // 字体
    cellStyle.setAlignment(HorizontalAlignment.CENTER); // 居中
    cellStyle.setWrapText(true); // 自动换行
    cellStyle.setBorderTop(BorderStyle.THIN); // 单元格边框
    cellStyle.setBorderBottom(BorderStyle.THIN); // 单元格边框
    cellStyle.setBorderLeft(BorderStyle.THIN); // 单元格边框
    cellStyle.setBorderRight(BorderStyle.THIN); // 单元格边框
    cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);//高度居中
    cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND); // 实心填充
    cellStyle.setFillForegroundColor(new XSSFColor(new Color(181, 230, 181),new DefaultIndexedColorMap()));
    return cellStyle;
}

设置列宽

sheet.autoSizeColumn(c); // 自适应
sheet.setColumnWidth(c, 50 * 256);

给Sheet页设置格式通俗处理

public static void buildStyle(Workbook wb) {
    Sheet sheet;
    Row row;
    for (int s = 0; s < wb.getNumberOfSheets(); s++) {
        sheet = wb.getSheetAt(s);
        for (int r = sheet.getFirstRowNum(); r <= sheet.getLastRowNum(); r++) {
            row = sheet.getRow(r);
            for (int c = row.getFirstCellNum(); c < row.getLastCellNum(); c++) {
                if (r == 0) { // 表头
                    row.getCell(c).setCellStyle(headerStyle(wb));
                    sheet.autoSizeColumn(c);
                } else { // 数据
                    row.getCell(c).setCellStyle(cellsStyle(wb));
                    if (sheet.getColumnWidth(c) > 50 * 256) {
                        sheet.setColumnWidth(c, 50 * 256);
                    }
                }
            }
        }
    }
}

参考

POI 导出 Excel 并且根据内容设置列宽自适应