excel 样式设置

package com.gctl.brp.untils;

import lombok.experimental.UtilityClass;
import org.apache.poi.hssf.usermodel.DVConstraint;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFDataFormat;
import org.apache.poi.hssf.usermodel.HSSFDataValidation;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddressList;
import org.apache.poi.xssf.usermodel.XSSFClientAnchor;
import org.apache.poi.xssf.usermodel.XSSFDataValidation;
import org.apache.poi.xssf.usermodel.XSSFDrawing;
import org.apache.poi.xssf.usermodel.XSSFRichTextString;

/**
 * Description:用于设置excel的特殊要求的样式
 */
@UtilityClass
public class ExcelStylesUtils {

    /**
     * firstRow 開始行號 根据此项目，默认为2(下标0开始)
     * lastRow  根据此项目，默认为最大65535
     * firstCol 区域中第一个单元格的列号 (下标0开始)
     * lastCol 区域中最后一个单元格的列号
     * strings 下拉内容
     * 用于设置excel 的下拉列表
     * */
    public static void selectList(Workbook workbook, int firstCol, int lastCol, String[] strings ){
        //设置需要处理的sheet页
        Sheet sheet = workbook.getSheetAt(0);
        //生成下拉列表的范围
        CellRangeAddressList cellRangeAddressList = new CellRangeAddressList(1, 65535, firstCol, lastCol);
        DataValidationHelper helper = sheet.getDataValidationHelper();
        //设置下拉框数据
        DataValidationConstraint constraint = helper.createExplicitListConstraint(strings);
        DataValidation dataValidation = helper.createValidation(constraint, cellRangeAddressList);
        //处理Excel兼容性问题
        if (dataValidation instanceof XSSFDataValidation) {
            dataValidation.setSuppressDropDownArrow(true);
            dataValidation.setShowErrorBox(true);
        } else {
            dataValidation.setSuppressDropDownArrow(false);
        }
        sheet.addValidationData(dataValidation);
    }

    /**
     * 设置批注
     */
    public static void setAnnotation(Workbook workbook,int row1,int col1,int row2,int col2,int row3,int col3,String content){
        Sheet sheet = workbook.getSheetAt(0);
        XSSFDrawing patriarch = (XSSFDrawing) sheet.createDrawingPatriarch();
        Cell cell = sheet.createRow(row1).createCell(col1);
        cell.setCellValue(new XSSFRichTextString());
        // (int dx1, int dy1, int dx2, int dy2, short col1, int row1, short col2, int row2)
        // 前四个参数是坐标点,后四个参数是编辑和显示批注时的大小.
        Comment comment = patriarch.createCellComment(new XSSFClientAnchor(0, 0, 0, 0, (short) col2, row2, (short) col3, row3));
        comment.setString(new XSSFRichTextString(content));
        cell.setCellComment(comment);
    }

    /**
     * 设置单元格格式
     */
    public static void setStyle(Workbook workbook,int col){
        Sheet sheet = workbook.getSheetAt(0);
        /**
         * 设置单元格格式
         */
        CellStyle cellStyle = workbook.createCellStyle();
        DataFormat dataFormat = workbook.createDataFormat();
        cellStyle.setDataFormat(dataFormat.getFormat("@"));
        sheet.setDefaultColumnStyle(col,cellStyle);
    }

}