本文实例讲述了Java实现的Excel列号数字与字母互相转换功能。分享给大家供大家参考，具体如下：
我们在实现对Excel的导入导出的时候，往往需要准确的给用户提示信息，提示到具体的Excel的单元格，这里就需要对Excel的列号进行数字和字母的转换，今天正好用到这个需求，所以就写了一个demo，总结一下：
Java实现：
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package test;/** * Deal with Excel column indexToStr and strToIndex * @author Stephen.Huang * @version 2015-7-8 */public class ExcelColumn { public static void main(String[] args) { String colstr = "AA"; int colIndex = excelColStrToNum(colstr, colstr.length()); System.out.println("'" + colstr + "' column index of " + colIndex); colIndex = 26; colstr = excelColIndexToStr(colIndex); System.out.println(colIndex + " column in excel of " + colstr); colstr = "AAAA"; colIndex = excelColStrToNum(colstr, colstr.length()); System.out.println("'" + colstr + "' column index of " + colIndex); colIndex = 466948; colstr = excelColIndexToStr(colIndex); System.out.println(colIndex + " column in excel of " + colstr); } /** * Excel column index begin 1 * @param colStr * @param length * @return */ public static int excelColStrToNum(String colStr, int length) { int num = 0; int result = 0; for(int i = 0; i < length; i++) { char ch = colStr.charAt(length - i - 1); num = (int)(ch - 'A' + 1) ; num *= Math.pow(26, i); result += num; } return result; } /** * Excel column index begin 1 * @param columnIndex * @return */ public static String excelColIndexToStr(int columnIndex) { if (columnIndex <= 0) { return null; } String columnStr = ""; columnIndex--; do { if (columnStr.length() > 0) { columnIndex--; } columnStr = ((char) (columnIndex % 26 + (int) 'A')) + columnStr; columnIndex = (int) ((columnIndex - columnIndex % 26) / 26); } while (columnIndex > 0); return columnStr; }} |
测试结果：
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‘AA' column index of 2726 column in excel of Z‘AAAA' column index of 18279466948 column in excel of ZNSN |
希望本文所述对大家java程序设计有所帮助。
原文链接：http://blog.csdn.net/u010571844/article/details/46806265
