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Hutool是一个小而全的Java工具类库,通过静态方法封装,降低相关API的学习成本,提高工作效率,使Java拥有函数式语言般的优雅,让Java语言也可以“甜甜的”。
package cn.hutool.poi.excel.style;
import cn.hutool.core.util.StrUtil;
import org.apache.poi.ss.usermodel.BorderStyle;
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.FillPatternType;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import org.apache.poi.ss.usermodel.Workbook;
/**
* Excel样式工具类
*
* @author looly
* @since 4.0.0
*/
public class StyleUtil {
/**
* 克隆新的{@link CellStyle}
*
* @param cell 单元格
* @param cellStyle 被复制的样式
* @return {@link CellStyle}
*/
public static CellStyle cloneCellStyle(Cell cell, CellStyle cellStyle) {
return cloneCellStyle(cell.getSheet().getWorkbook(), cellStyle);
}
/**
* 克隆新的{@link CellStyle}
*
* @param workbook 工作簿
* @param cellStyle 被复制的样式
* @return {@link CellStyle}
*/
public static CellStyle cloneCellStyle(Workbook workbook, CellStyle cellStyle) {
final CellStyle newCellStyle = createCellStyle(workbook);
newCellStyle.cloneStyleFrom(cellStyle);
return newCellStyle;
}
/**
* 设置cell文本对齐样式
*
* @param cellStyle {@link CellStyle}
* @param halign 横向位置
* @param valign 纵向位置
* @return {@link CellStyle}
*/
public static CellStyle setAlign(CellStyle cellStyle, HorizontalAlignment halign, VerticalAlignment valign) {
cellStyle.setAlignment(halign);
cellStyle.setVerticalAlignment(valign);
return cellStyle;
}
/**
* 设置cell的四个边框粗细和颜色
*
* @param cellStyle {@link CellStyle}
* @param borderSize 边框粗细{@link BorderStyle}枚举
* @param colorIndex 颜色的short值
* @return {@link CellStyle}
*/
public static CellStyle setBorder(CellStyle cellStyle, BorderStyle borderSize, IndexedColors colorIndex) {
cellStyle.setBorderBottom(borderSize);
cellStyle.setBottomBorderColor(colorIndex.index);
cellStyle.setBorderLeft(borderSize);
cellStyle.setLeftBorderColor(colorIndex.index);
cellStyle.setBorderRight(borderSize);
cellStyle.setRightBorderColor(colorIndex.index);
cellStyle.setBorderTop(borderSize);
cellStyle.setTopBorderColor(colorIndex.index);
return cellStyle;
}
/**
* 给cell设置颜色
*
* @param cellStyle {@link CellStyle}
* @param color 背景颜色
* @param fillPattern 填充方式 {@link FillPatternType}枚举
* @return {@link CellStyle}
*/
public static CellStyle setColor(CellStyle cellStyle, IndexedColors color, FillPatternType fillPattern) {
return setColor(cellStyle, color.index, fillPattern);
}
/**
* 给cell设置颜色
*
* @param cellStyle {@link CellStyle}
* @param color 背景颜色
* @param fillPattern 填充方式 {@link FillPatternType}枚举
* @return {@link CellStyle}
*/
public static CellStyle setColor(CellStyle cellStyle, short color, FillPatternType fillPattern) {
cellStyle.setFillForegroundColor(color);
cellStyle.setFillPattern(fillPattern);
return cellStyle;
}
/**
* 创建字体
*
* @param workbook {@link Workbook}
* @param color 字体颜色
* @param fontSize 字体大小
* @param fontName 字体名称,可以为null使用默认字体
* @return {@link Font}
*/
public static Font createFont(Workbook workbook, short color, short fontSize, String fontName) {
final Font font = workbook.createFont();
return setFontStyle(font, color, fontSize, fontName);
}
/**
* 设置字体样式
*
* @param font 字体{@link Font}
* @param color 字体颜色
* @param fontSize 字体大小
* @param fontName 字体名称,可以为null使用默认字体
* @return {@link Font}
*/
public static Font setFontStyle(Font font, short color, short fontSize, String fontName) {
if (color > 0) {
font.setColor(color);
}
if (fontSize > 0) {
font.setFontHeightInPoints(fontSize);
}
if (StrUtil.isNotBlank(fontName)) {
font.setFontName(fontName);
}
return font;
}
/**
* 创建单元格样式
*
* @param workbook {@link Workbook} 工作簿
* @return {@link CellStyle}
* @see Workbook#createCellStyle()
* @since 5.4.0
*/
public static CellStyle createCellStyle(Workbook workbook) {
if (null == workbook) {
return null;
}
return workbook.createCellStyle();
}
/**
* 创建默认普通单元格样式
*
*
* 1. 文字上下左右居中
* 2. 细边框,黑色
*
*
* @param workbook {@link Workbook} 工作簿
* @return {@link CellStyle}
*/
public static CellStyle createDefaultCellStyle(Workbook workbook) {
final CellStyle cellStyle = createCellStyle(workbook);
setAlign(cellStyle, HorizontalAlignment.CENTER, VerticalAlignment.CENTER);
setBorder(cellStyle, BorderStyle.THIN, IndexedColors.BLACK);
return cellStyle;
}
/**
* 创建默认头部样式
*
* @param workbook {@link Workbook} 工作簿
* @return {@link CellStyle}
*/
public static CellStyle createHeadCellStyle(Workbook workbook) {
final CellStyle cellStyle = createCellStyle(workbook);
setAlign(cellStyle, HorizontalAlignment.CENTER, VerticalAlignment.CENTER);
setBorder(cellStyle, BorderStyle.THIN, IndexedColors.BLACK);
setColor(cellStyle, IndexedColors.GREY_25_PERCENT, FillPatternType.SOLID_FOREGROUND);
return cellStyle;
}
/**
* 给定样式是否为null(无样式)或默认样式,默认样式为{@code workbook.getCellStyleAt(0)}
*
* @param workbook 工作簿
* @param style 被检查的样式
* @return 是否为null(无样式)或默认样式
* @since 4.6.3
*/
public static boolean isNullOrDefaultStyle(Workbook workbook, CellStyle style) {
return (null == style) || style.equals(workbook.getCellStyleAt(0));
}
/**
* 创建数据格式并获取格式
*
* @param workbook {@link Workbook}
* @param format 数据格式
* @return 数据格式
* @since 5.5.5
*/
public static Short getFormat(Workbook workbook, String format) {
final DataFormat dataFormat = workbook.createDataFormat();
return dataFormat.getFormat(format);
}
}
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