工具类
package com.alibaba.excel.write.style;import java.util.List;import com.alibaba.excel.metadata.data.WriteCellData;import com.alibaba.excel.util.ListUtils;import com.alibaba.excel.write.handler.context.CellWriteHandlerContext;import com.alibaba.excel.write.metadata.style.WriteCellStyle;import lombok.EqualsAndHashCode;import lombok.Getter;import lombok.Setter;import org.apache.commons.collections4.CollectionUtils;@Getter@Setter@EqualsAndHashCodepublic class HorizontalCellStyleStrategy extends AbstractCellStyleStrategy { private WriteCellStyle headWriteCellStyle; private List contentWriteCellStyleList; public HorizontalCellStyleStrategy() { } public HorizontalCellStyleStrategy(WriteCellStyle headWriteCellStyle, List contentWriteCellStyleList) { this.headWriteCellStyle = headWriteCellStyle; this.contentWriteCellStyleList = contentWriteCellStyleList; } public HorizontalCellStyleStrategy(WriteCellStyle headWriteCellStyle, WriteCellStyle contentWriteCellStyle) { this.headWriteCellStyle = headWriteCellStyle; if (contentWriteCellStyle != null) { this.contentWriteCellStyleList = ListUtils.newArrayList(contentWriteCellStyle); } } @Override protected void setHeadCellStyle(CellWriteHandlerContext context) { if (stopProcessing(context) || headWriteCellStyle == null) { return; } WriteCellData cellData = context.getFirstCellData(); WriteCellStyle.merge(headWriteCellStyle, cellData.getOrCreateStyle()); } @Override protected void setContentCellStyle(CellWriteHandlerContext context) { if (stopProcessing(context) || CollectionUtils.isEmpty(contentWriteCellStyleList)) { return; } WriteCellData cellData = context.getFirstCellData(); if (context.getRelativeRowIndex() == null || context.getRelativeRowIndex() <= 0) { WriteCellStyle.merge(contentWriteCellStyleList.get(0), cellData.getOrCreateStyle()); } else { WriteCellStyle.merge( contentWriteCellStyleList.get(context.getRelativeRowIndex() % contentWriteCellStyleList.size()), cellData.getOrCreateStyle()); } } protected boolean stopProcessing(CellWriteHandlerContext context) { return context.getFirstCellData() == null; }} package com.bytz.modules.cms.statistics.excel;import com.alibaba.excel.write.metadata.style.WriteCellStyle;import com.alibaba.excel.write.metadata.style.WriteFont;import org.apache.poi.ss.usermodel.*;public class StyleUtils { public static WriteCellStyle getHeadStyle(){ // 头的策略 WriteCellStyle headWriteCellStyle = new WriteCellStyle(); // 背景颜色// headWriteCellStyle.setFillForegroundColor(IndexedColors.LIGHT_TURQUOISE1.getIndex());// headWriteCellStyle.setFillPatternType(FillPatternType.SOLID_FOREGROUND); // 字体 WriteFont headWriteFont = new WriteFont(); headWriteFont.setFontName("宋体");//设置字体名字 headWriteFont.setFontHeightInPoints((short)14);//设置字体大小 headWriteFont.setBold(true);//字体加粗 headWriteCellStyle.setWriteFont(headWriteFont); //在样式用应用设置的字体; // 样式 headWriteCellStyle.setBorderBottom(BorderStyle.THIN);//设置底边框; headWriteCellStyle.setBottomBorderColor((short) 0);//设置底边框颜色; headWriteCellStyle.setBorderLeft(BorderStyle.THIN); //设置左边框; headWriteCellStyle.setLeftBorderColor((short) 0);//设置左边框颜色; headWriteCellStyle.setBorderRight(BorderStyle.THIN);//设置右边框; headWriteCellStyle.setRightBorderColor((short) 0);//设置右边框颜色; headWriteCellStyle.setBorderTop(BorderStyle.THIN);//设置顶边框; headWriteCellStyle.setTopBorderColor((short) 0); //设置顶边框颜色; headWriteCellStyle.setWrapped(true); //设置自动换行; headWriteCellStyle.setHorizontalAlignment(HorizontalAlignment.CENTER);//设置水平对齐的样式为居中对齐; headWriteCellStyle.setVerticalAlignment(VerticalAlignment.CENTER); //设置垂直对齐的样式为居中对齐; headWriteCellStyle.setShrinkToFit(true);//设置文本收缩至合适 return headWriteCellStyle; } public static WriteCellStyle getContentStyle(){ // 内容的策略 WriteCellStyle contentWriteCellStyle = new WriteCellStyle(); // 背景绿色 // 这里需要指定 FillPatternType 为FillPatternType.SOLID_FOREGROUND 不然无法显示背景颜色.头默认了 FillPatternType所以可以不指定// contentWriteCellStyle.setFillForegroundColor(IndexedColors.PALE_BLUE.getIndex());// contentWriteCellStyle.setFillPatternType(FillPatternType.SOLID_FOREGROUND); // 设置字体 WriteFont contentWriteFont = new WriteFont(); contentWriteFont.setFontHeightInPoints((short) 12);//设置字体大小 contentWriteFont.setFontName("宋体"); //设置字体名字 contentWriteCellStyle.setWriteFont(contentWriteFont);//在样式用应用设置的字体; //设置样式; contentWriteCellStyle.setBorderBottom(BorderStyle.THIN);//设置底边框; contentWriteCellStyle.setBottomBorderColor((short) 0);//设置底边框颜色; contentWriteCellStyle.setBorderLeft(BorderStyle.THIN); //设置左边框; contentWriteCellStyle.setLeftBorderColor((short) 0);//设置左边框颜色; contentWriteCellStyle.setBorderRight(BorderStyle.THIN);//设置右边框; contentWriteCellStyle.setRightBorderColor((short) 0);//设置右边框颜色; contentWriteCellStyle.setBorderTop(BorderStyle.THIN);//设置顶边框; contentWriteCellStyle.setTopBorderColor((short) 0); ///设置顶边框颜色; contentWriteCellStyle.setHorizontalAlignment(HorizontalAlignment.CENTER);// 水平居中 contentWriteCellStyle.setVerticalAlignment(VerticalAlignment.CENTER);// 垂直居中 contentWriteCellStyle.setWrapped(true); //设置自动换行;// contentWriteCellStyle.setShrinkToFit(true);//设置文本收缩至合适 return contentWriteCellStyle; }}使用
// 设置单元格样式 HorizontalCellStyleStrategy horizontalCellStyleStrategy = new HorizontalCellStyleStrategy(StyleUtils.getHeadStyle(), StyleUtils.getContentStyle()); //写入表头 EasyExcel.write(outputStream) .head(header) .needHead(true) .autoCloseStream(true) .sheet() .registerWriteHandler(horizontalCellStyleStrategy) .doWrite(dataList) ;主要是文字居中
来源地址：https://blog.csdn.net/weixin_46114883/article/details/129031331
