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icefrog POI工具类(对MS Office操作)
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package com.whaleal.icefrog.poi.excel;
import com.whaleal.icefrog.core.util.ArrayUtil;
import com.whaleal.icefrog.core.util.StrUtil;
import org.apache.poi.ss.formula.ConditionalFormattingEvaluator;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.ExcelNumberFormat;
/**
* Excel中日期判断、读取、处理等补充工具类
*
* @author Looly
* @author wh
* @since 1.0.0
*/
public class ExcelDateUtil {
/**
* 某些特殊的自定义日期格式
*/
private static final int[] customFormats = new int[]{28, 30, 31, 32, 33, 55, 56, 57, 58};
public static boolean isDateFormat( Cell cell ) {
return isDateFormat(cell, null);
}
/**
* 判断是否日期格式
*
* @param cell 单元格
* @param cfEvaluator {@link ConditionalFormattingEvaluator}
* @return 是否日期格式
*/
public static boolean isDateFormat( Cell cell, ConditionalFormattingEvaluator cfEvaluator ) {
final ExcelNumberFormat nf = ExcelNumberFormat.from(cell, cfEvaluator);
return isDateFormat(nf);
}
/**
* 判断是否日期格式
*
* @param numFmt {@link ExcelNumberFormat}
* @return 是否日期格式
*/
public static boolean isDateFormat( ExcelNumberFormat numFmt ) {
return isDateFormat(numFmt.getIdx(), numFmt.getFormat());
}
/**
* 判断日期格式
*
* @param formatIndex 格式索引,一般用于内建格式
* @param formatString 格式字符串
* @return 是否为日期格式
* @since 1.0.0
*/
public static boolean isDateFormat( int formatIndex, String formatString ) {
// issue#1283@Github
if (ArrayUtil.contains(customFormats, formatIndex)) {
return true;
}
// 自定义格式判断
if (StrUtil.isNotEmpty(formatString) &&
StrUtil.containsAny(formatString, "周", "星期", "aa")) {
// aa -> 周一
// aaa -> 星期一
return true;
}
return org.apache.poi.ss.usermodel.DateUtil.isADateFormat(formatIndex, formatString);
}
}
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