poi 抽取execl表面数据源代码工具

开发中 ,导入导出execl避免不了数据类型格式的校验，在使用poi要使用抽取表面数据，poi暂时不支持单元格抽取，查询poi源码抽取工具类如下，如使用jxl就不必使用，jxl取出的单元格数据已是抽取后的表面数据

注：poi版本 - 3.10

接口 ExeclExtractor

package com.dadi.oa.util.poi;
import org.apache.poi.ss.usermodel.Cell;
/**
 * poi execl文本抽取接口
 * @author ao.ouyang
 *
 */
public interface ExeclExtractor {
	/**
	 * 抽取单元格文本
	 * @param cell
	 * @return
	 */
	public String getText(Cell cell);
	
	/**
	 * 公式结果
	 * @param formulasNotResults
	 */
	public void setFormulasNotResults(boolean formulasNotResults);
	
	/**
	 * 是否抽取注释
	 * @param includeCellComments
	 */
	public void setIncludeCellComments(boolean includeCellComments);
}

03版抽取方法 HSSFExeclExtractor

package com.dadi.oa.util.poi;
import org.apache.poi.POIOLE2TextExtractor;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFComment;
import org.apache.poi.hssf.usermodel.HSSFDataFormatter;
import org.apache.poi.hssf.usermodel.HSSFRichTextString;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.formula.eval.ErrorEval;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.xssf.usermodel.XSSFCell;
/**
 * Poi操作工具类 03版<br/>
 * 功能1：获取execl单元格显示的文本<br/>
 * @author ao.ouyang
 *
 */
public class HSSFExeclExtractor extends POIOLE2TextExtractor implements ExeclExtractor {
	private HSSFDataFormatter _formatter;
	private boolean _shouldEvaluateFormulas = true;
	private boolean _includeCellComments = false;
	public HSSFExeclExtractor(HSSFWorkbook wb) {
		super(wb);
		_formatter = new HSSFDataFormatter();
	}
	public void setFormulasNotResults(boolean formulasNotResults) {
		_shouldEvaluateFormulas = !formulasNotResults;
	}
	@Override
	public void setIncludeCellComments(boolean includeCellComments) {
		_includeCellComments = includeCellComments;
		
	}
	/**
	 * 获取单元格格式内容
	 * @param cell
	 * @return
	 */
	@Override
	public String getText(Cell cell) {
		HSSFCell hssfCell = (HSSFCell) cell;
		StringBuffer text = new StringBuffer();
		if(hssfCell != null) {
			switch(hssfCell.getCellType()) {
				case HSSFCell.CELL_TYPE_STRING:
					text.append(hssfCell.getRichStringCellValue().getString());
					break;
				case HSSFCell.CELL_TYPE_NUMERIC:
					text.append(
					      _formatter.formatCellValue(hssfCell)
					);
					break;
				case HSSFCell.CELL_TYPE_BOOLEAN:
					text.append(hssfCell.getBooleanCellValue());
					break;
				case HSSFCell.CELL_TYPE_ERROR:
					text.append(ErrorEval.getText(hssfCell.getErrorCellValue()));
					break;
				case HSSFCell.CELL_TYPE_FORMULA:
					if(!_shouldEvaluateFormulas) {
						text.append(hssfCell.getCellFormula());
					} else {
						switch(cell.getCachedFormulaResultType()) {
							case HSSFCell.CELL_TYPE_STRING:
								HSSFRichTextString str = hssfCell.getRichStringCellValue();
								if(str != null && str.length() > 0) {
									text.append(str.toString());
								}
								break;
							case HSSFCell.CELL_TYPE_NUMERIC:
							   HSSFCellStyle style = hssfCell.getCellStyle();
							   if(style == null) {
							      text.append( cell.getNumericCellValue() );
							   } else {
                         text.append(
                               _formatter.formatRawCellContents(
                                     cell.getNumericCellValue(),
                                     style.getDataFormat(),
                                     style.getDataFormatString()
                               )
                         );
							   }
								break;
							case HSSFCell.CELL_TYPE_BOOLEAN:
								text.append(cell.getBooleanCellValue());
								break;
							case HSSFCell.CELL_TYPE_ERROR:
								text.append(ErrorEval.getText(cell.getErrorCellValue()));
								break;
						}
					}
					break;
			}
			// Output the comment, if requested and exists
			HSSFComment comment = hssfCell.getCellComment();
			if(_includeCellComments && comment != null) {
				// Replace any newlines with spaces, otherwise it
				//  breaks the output
				String commentText = comment.getString().getString().replace('\n', ' ');
				text.append(" Comment by "+comment.getAuthor()+": "+commentText);
			}
		}
		return text.toString();
	}
	@Override
	public String getText() {
		// TODO Auto-generated method stub
		return null;
	}
	
}

07 版抽取方法 XSSFExeclExtractor

package com.dadi.oa.util.poi;
import java.io.IOException;
import java.util.Iterator;
import java.util.Locale;
import org.apache.poi.POIXMLTextExtractor;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Comment;
import org.apache.poi.ss.usermodel.DataFormatter;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
/**
 * Poi操作工具类 07版<br/>
 * 功能1：获取execl单元格显示的文本<br/>
 * @author ao.ouyang
 *
 */
public class XSSFExeclExtractor extends POIXMLTextExtractor implements ExeclExtractor {
	 private Locale locale;
    private boolean formulasNotResults = false;
    private boolean includeCellComments = false;
    public XSSFExeclExtractor(XSSFWorkbook workbook) {
        super(workbook);
    }
    
    
    /**
	 * 获取单元格格式内容
	 * @param cell
	 * @return
	 */
    public String getText(Cell cell) {
    	XSSFCell xssfCell = (XSSFCell) cell;
        DataFormatter formatter;
        if(locale == null) {
            formatter = new DataFormatter();
        } else  {
            formatter = new DataFormatter(locale);
        }
        StringBuffer text = new StringBuffer();
        // Is it a formula one?
        if(xssfCell!=null){
        if(xssfCell.getCellType() == Cell.CELL_TYPE_FORMULA) {
            if (formulasNotResults) {
                text.append(xssfCell.getCellFormula());
            } else {
                if (xssfCell.getCachedFormulaResultType() == Cell.CELL_TYPE_STRING) {
                    handleStringCell(text, xssfCell);
                } else {
                    handleNonStringCell(text, xssfCell, formatter);
                }
            }
        } else if(xssfCell.getCellType() == Cell.CELL_TYPE_STRING) {
            handleStringCell(text, xssfCell);
        } else {
            handleNonStringCell(text, xssfCell, formatter);
        }
        // Output the comment, if requested and exists
        Comment comment = xssfCell.getCellComment();
        if(includeCellComments && comment != null) {
            // Replace any newlines with spaces, otherwise it
            //  breaks the output
            String commentText = comment.getString().getString().replace('\n', ' ');
            text.append(" Comment by ").append(comment.getAuthor()).append(": ").append(commentText);
        }
            
        }
        return text.toString();
    }
    private void handleStringCell(StringBuffer text, Cell cell) {
        text.append(cell.getRichStringCellValue().getString());
    }
    private void handleNonStringCell(StringBuffer text, Cell cell, DataFormatter formatter) {
        int type = cell.getCellType();
        if (type == Cell.CELL_TYPE_FORMULA) {
            type = cell.getCachedFormulaResultType();
        }
        if (type == Cell.CELL_TYPE_NUMERIC) {
            CellStyle cs = cell.getCellStyle();
            if (cs.getDataFormatString() != null) {
                text.append(formatter.formatRawCellContents(
                        cell.getNumericCellValue(), cs.getDataFormat(), cs.getDataFormatString()
                        ));
                return;
            }
        }
    }
	@Override
	public void setFormulasNotResults(boolean formulasNotResults) {
		 this.formulasNotResults = formulasNotResults;
		
	}
	
	@Override
	public String getText() {
		// TODO Auto-generated method stub
		return null;
	}
	@Override
	public void setIncludeCellComments(boolean formulasNotResults) {
		 this.includeCellComments = includeCellComments;
	}
}