poi获取合并单元格内的第一行第一列的值

  1 import java.io.FileInputStream;
  2 import java.io.FileNotFoundException;
  3 import java.io.IOException;
  4 
  5 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
  6 import org.apache.poi.ss.usermodel.Cell;
  7 import org.apache.poi.ss.usermodel.DataFormatter;
  8 import org.apache.poi.ss.usermodel.Row;
  9 import org.apache.poi.ss.usermodel.Sheet;
 10 import org.apache.poi.ss.usermodel.Workbook;
 11 import org.apache.poi.ss.util.CellRangeAddress;
 12 import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 13 
 14 public class TestExcel {
 15     private static final DataFormatter FORMATTER = new DataFormatter();
 16 
 17     /**
 18      * 获取单元格内容
 19      * 
 20      * @param cell
 21      *            单元格对象
 22      * @return 转化为字符串的单元格内容
 23      */
 24     private static String getCellContent(Cell cell) {
 25         return FORMATTER.formatCellValue(cell);
 26     }
 27 
 28     public static boolean isMergedRegion(Sheet sheet, Cell cell) {
 29         // 得到一个sheet中有多少个合并单元格
 30         int sheetmergerCount = sheet.getNumMergedRegions();
 31         for (int i = 0; i < sheetmergerCount; i++) {
 32             // 得出具体的合并单元格
 33             CellRangeAddress ca = sheet.getMergedRegion(i);
 34             // 得到合并单元格的起始行, 结束行, 起始列, 结束列
 35             int firstC = ca.getFirstColumn();
 36             int lastC = ca.getLastColumn();
 37             int firstR = ca.getFirstRow();
 38             int lastR = ca.getLastRow();
 39             // 判断该单元格是否在合并单元格范围之内, 如果是, 则返回 true
 40             if (cell.getColumnIndex() <= lastC && cell.getColumnIndex() >= firstC) {
 41                 if (cell.getRowIndex() <= lastR && cell.getRowIndex() >= firstR) {
 42                     return true;
 43                 }
 44             }
 45         }
 46         return false;
 47     }
 48 
 49     public static String getMergedRegionValue(Sheet sheet, Cell cell) {
 50         // 获得一个 sheet 中合并单元格的数量
 51         int sheetmergerCount = sheet.getNumMergedRegions();
 52         // 便利合并单元格
 53         for (int i = 0; i < sheetmergerCount; i++) {
 54             // 获得合并单元格
 55             CellRangeAddress ca = sheet.getMergedRegion(i);
 56             // 获得合并单元格的起始行, 结束行, 起始列, 结束列
 57             int firstC = ca.getFirstColumn();
 58             int firstR = ca.getFirstRow();
 59 
 60             if (cell.getColumnIndex() == firstC && cell.getRowIndex() == firstR) {
 61                 return "第" + (cell.getRowIndex() + 1) + "行 第" + (cell.getColumnIndex() + 1) + "列 的内容是： " 
 62                        + getCellContent(cell) + ",";
 63             }
 64 
 65         }
 66         return "";
 67     }
 68 
 69     private static String getExcelValue(String filePath, int sheetIndex) {
 70         String value = "";
 71         try {
 72             // 创建对Excel工作簿文件
 73             Workbook book = null;
 74             try {
 75                 book = new XSSFWorkbook(new FileInputStream(filePath));
 76             } catch (Exception ex) {
 77                 book = new HSSFWorkbook(new FileInputStream(filePath));
 78             }
 79 
 80             Sheet sheet = book.getSheetAt(sheetIndex);
 81             // 获取到Excel文件中的所有行数
 82             int rows = sheet.getPhysicalNumberOfRows();
 83             // System.out.println("rows:" + rows);
 84             // 遍历行
 85 
 86             for (int i = 0; i < rows; i++) {
 87                 // 读取左上端单元格
 88                 Row row = sheet.getRow(i);
 89                 // 行不为空
 90                 if (row != null) {
 91                     // 获取到Excel文件中的所有的列
 92                     int cells = row.getPhysicalNumberOfCells();
 93                     // System.out.println("cells:" + cells);
 94 
 95                     // 遍历列
 96                     for (int j = 0; j < cells; j++) {
 97                         // 获取到列的值
 98                         Cell cell = row.getCell(j);
 99                         if (cell != null) {
100                             if (isMergedRegion(sheet, cell)) {
101                                 value += getMergedRegionValue(sheet, cell);
102                             } else {
103                                 value += "第" + (i + 1) + "行 第" + (j + 1) + "列 的内容是： " + getCellContent(cell) + ",";
104                             }
105 
106                         }
107                     }
108 
109                 }
110             }
111         } catch (FileNotFoundException e) {
112             e.printStackTrace();
113         } catch (IOException e) {
114             e.printStackTrace();
115         }
116 
117         return value;
118 
119     }
120 
121     public static void main(String[] args) {
122 
123         String filePath = "F://example.xls";
124         int sheetIndex = 0;
125 
126         String[] val = getExcelValue(filePath, sheetIndex).split(",");
127         for (int i = 0; i < val.length; i++) {
128             System.out.println(val[i]);
129         }
130     }
131 }