导出优化

linwei

2026-01-27 04ca758eb14fa39e50aea551ad646980d5e604f8

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package org.sxkj.system.util.excel;
 
import com.alibaba.excel.metadata.Head;
import com.alibaba.excel.metadata.data.CellData;
import com.alibaba.excel.write.handler.CellWriteHandler;
import com.alibaba.excel.write.metadata.holder.WriteSheetHolder;
import com.alibaba.excel.write.metadata.holder.WriteTableHolder;
import org.apache.poi.ss.usermodel.*;
import org.springblade.core.tool.utils.Func;
 
/**
 * 修改单元格格式为文本格式
 * @author zhongrj
 * @since 2021-9-26
 */
public class RowWriteHandler  implements CellWriteHandler {
 
    public static CellStyle cellStyle;
 
    /**
     * 设置全局变量，防止  cellStyle 创建过多报错 2021-12-16 zrj
     * The maximum number of cell styles was exceeded. You can define up to 64000styles in a .xlsx workbook
     * @param cellStyle
     */
    public static void setCellStyle(CellStyle cellStyle) {
        RowWriteHandler.cellStyle = cellStyle;
    }
 
    @Override
    public void beforeCellCreate(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder, Row row, Head head, Integer integer, Integer integer1, Boolean aBoolean) {
 
    }
 
    @Override
    public void afterCellCreate(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder, Cell cell, Head head, Integer integer, Boolean aBoolean) {
        //设置单元格格式为文本
        Workbook workbook = writeSheetHolder.getSheet().getWorkbook();
        //自定义样式不为空时,重复利用
        if(Func.isEmpty(cellStyle)){
            cellStyle = workbook.createCellStyle();
            setCellStyle(cellStyle);
        }
        DataFormat dataFormat = workbook.createDataFormat();
        cellStyle.setDataFormat(dataFormat.getFormat("@"));
        cell.setCellStyle(cellStyle);
    }
 
    //@Override 加上会报错
    public void afterCellDataConverted(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder, CellData cellData, Cell cell, Head head, Integer integer, Boolean aBoolean) {
 
    }
 
    // @Override
    // public void afterCellDispose(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder, List<CellData> list, Cell cell, Head head, Integer integer, Boolean aBoolean) {
    //
    // }
}