poi读取合并单元格

poi读取合并单元格

学习了：http://blog.csdn.net/ycb1689/article/details/9764191

进行了列合并单元格的修正；原来是我自己找错了地方；

import java.io.File;  
import java.io.IOException;  
  
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;  
import org.apache.poi.ss.usermodel.Cell;  
import org.apache.poi.ss.usermodel.Row;  
import org.apache.poi.ss.usermodel.Sheet;  
import org.apache.poi.ss.usermodel.Workbook;  
import org.apache.poi.ss.usermodel.WorkbookFactory;  
import org.apache.poi.ss.util.CellRangeAddress;  
import org.junit.Test;  
  
/**  
*   
* @author wcyong  
*  
* @date   2013-6-21  
*/  
public class TestReadMergeRegionExcel {  
  
@Test  
public void testReadExcel() {  
readExcelToObj(“f:\\test\\out3.xls”);  
}  
  
/**  
* 读取excel数据  
* @param path  
*/  
private void readExcelToObj(String path) {  
  
Workbook wb = null;  
try {  
wb = WorkbookFactory.create(new File(path));  
readExcel(wb, 0, 0, 0);  
} catch (InvalidFormatException e) {  
e.printStackTrace();  
} catch (IOException e) {  
e.printStackTrace();  
}  
}  
  
/**  
* 读取excel文件  
* @param wb   
* @param sheetIndex sheet页下标：从0开始  
* @param startReadLine 开始读取的行:从0开始  
* @param tailLine 去除最后读取的行  
*/  
private void readExcel(Workbook wb,int sheetIndex, int startReadLine, int tailLine) {  
Sheet sheet = wb.getSheetAt(sheetIndex);  
Row row = null;  
  
for(int i=startReadLine; i<sheet.getLastRowNum()-tailLine+1; i++) {  
row = sheet.getRow(i);  
for(Cell c : row) {  
boolean isMerge = isMergedRegion(sheet, i, c.getColumnIndex());  
//判断是否具有合并单元格  
if(isMerge) {  
String rs = getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex());  
System.out.print(rs + “  “);  
}else {  
System.out.print(c.getRichStringCellValue()+”  “);  
}  
}  
System.out.println();  
  
}  
  
}  
  
/**   
* 获取合并单元格的值   
* @param sheet   
* @param row   
* @param column   
* @return   
*/    
public String getMergedRegionValue(Sheet sheet ,int row , int column){    
    int sheetMergeCount = sheet.getNumMergedRegions();    
        
    for(int i = 0 ; i < sheetMergeCount ; i++){    
        CellRangeAddress ca = sheet.getMergedRegion(i);    
        int firstColumn = ca.getFirstColumn();    
        int lastColumn = ca.getLastColumn();    
        int firstRow = ca.getFirstRow();    
        int lastRow = ca.getLastRow();    
            
        if(row >= firstRow && row <= lastRow){    
                
            if(column >= firstColumn && column <= lastColumn){    
                Row fRow = sheet.getRow(firstRow);    
                Cell fCell = fRow.getCell(firstColumn);    
                return getCellValue(fCell) ;    
            }    
        }    
    }    
        
    return null ;    
}    
  
/**  
* 判断合并了行  
* @param sheet  
* @param row  
* @param column  
* @return  
*/  
private boolean isMergedRow(Sheet sheet,int row ,int column) {  
  int sheetMergeCount = sheet.getNumMergedRegions();  
  for (int i = 0; i < sheetMergeCount; i++) {  
CellRangeAddress range = sheet.getMergedRegion(i);  
int firstColumn = range.getFirstColumn();  
int lastColumn = range.getLastColumn();  
int firstRow = range.getFirstRow();  
int lastRow = range.getLastRow();  
if(row == firstRow && row == lastRow){  
if(column >= firstColumn && column <= lastColumn){  
return true;  
}  
}  
  }  
  return false;  
}  
  
/**  
* 判断指定的单元格是否是合并单元格  
* @param sheet   
* @param row 行下标  
* @param column 列下标  
* @return  
*/  
private boolean isMergedRegion(Sheet sheet,int row ,int column) {  
  int sheetMergeCount = sheet.getNumMergedRegions();  
  for (int i = 0; i < sheetMergeCount; i++) {  
CellRangeAddress range = sheet.getMergedRegion(i);  
int firstColumn = range.getFirstColumn();  
int lastColumn = range.getLastColumn();  
int firstRow = range.getFirstRow();  
int lastRow = range.getLastRow();  
if(row >= firstRow && row <= lastRow){  
if(column >= firstColumn && column <= lastColumn){  
return true;  
}  
}  
  }  
  return false;  
}  
  
/**  
* 判断sheet页中是否含有合并单元格   
* @param sheet   
* @return  
*/  
private boolean hasMerged(Sheet sheet) {  
        return sheet.getNumMergedRegions() > 0 ? true : false;  
    }  
  
/**  
* 合并单元格  
* @param sheet   
* @param firstRow 开始行  
* @param lastRow 结束行  
* @param firstCol 开始列  
* @param lastCol 结束列  
*/  
private void mergeRegion(Sheet sheet, int firstRow, int lastRow, int firstCol, int lastCol) {  
sheet.addMergedRegion(new CellRangeAddress(firstRow, lastRow, firstCol, lastCol));  
}  
  
/**   
* 获取单元格的值   
* @param cell   
* @return   
*/    
public String getCellValue(Cell cell){    
        
    if(cell == null) return “”;    
        
    if(cell.getCellType() == Cell.CELL_TYPE_STRING){    
            
        return cell.getStringCellValue();    
            
    }else if(cell.getCellType() == Cell.CELL_TYPE_BOOLEAN){    
            
        return String.valueOf(cell.getBooleanCellValue());    
            
    }else if(cell.getCellType() == Cell.CELL_TYPE_FORMULA){    
            
        return cell.getCellFormula() ;    
            
    }else if(cell.getCellType() == Cell.CELL_TYPE_NUMERIC){    
            
        return String.valueOf(cell.getNumericCellValue());    
            
    }    
    return “”;    
}    
}