JXLS生成excel工具类

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import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import java.util.Map;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import net.sf.jxls.transformer.XLSTransformer;

public final class JxlsUtil {
	
	private static final Logger LOGGER = LoggerFactory.getLogger(JxlsUtil.class);
	
	private static JxlsUtil jxlsUtil = null;
	
	private JxlsUtil()
	{
		
	}
	
	public static JxlsUtil getInstance()
	{
		if(jxlsUtil == null)
		{
			return new JxlsUtil();
		}
		return jxlsUtil;
	}
	
	/**
	 * 根据模板生成excel文件
	 * @param map
	 * @param filePath
	 * @param targetPath
	 */
	public void buildXLS(Map map, String filePath, String targetPath) 
	{
		XLSTransformer transformer = new XLSTransformer();
		try 
		{
			InputStream is = new FileInputStream(filePath);
			HSSFWorkbook workBook = (HSSFWorkbook) transformer.transformXLS(is,map);
			workBook.setActiveSheet(0);
			OutputStream os = new FileOutputStream(targetPath);
			workBook.write(os);
			is.close();
			os.flush();
		} 
		catch (FileNotFoundException e) 
		{
			LOGGER.error("exception message: ",e);
		}
		catch (IOException e) 
		{
			LOGGER.error("exception message: ",e);
		} 
		catch (Exception e) 
		{
			LOGGER.error("exception message: ",e);
		}
	}
	
	/**
	 * 根据模板生成excel文件
	 * @param map
	 * @param filePath
	 * @param targetPath
	 */
	public void buildMultipleSheetsXLS(String filePath, String targetPath, List objects, List newSheetNames, String beanName, Map beanParams, int startSheetNum,MergedCallBack mergedCallBack) 
	{
		XLSTransformer transformer = new XLSTransformer();
		OutputStream os = null;
		InputStream is = null;
		try 
		{
			is = new FileInputStream(filePath);
			HSSFWorkbook workBook = (HSSFWorkbook) transformer.transformMultipleSheetsList(is, objects, newSheetNames, beanName, beanParams, startSheetNum);
			FormulaEvaluator evaluator = workBook.getCreationHelper().createFormulaEvaluator();
			for(int sheetNum = 0; sheetNum < workBook.getNumberOfSheets(); sheetNum++) {
			    Sheet sheet = workBook.getSheetAt(sheetNum);
			    for(Row r : sheet) {
			        for(Cell c : r) {
			            if(c.getCellType() == Cell.CELL_TYPE_FORMULA) {
			            	evaluator.evaluateFormulaCell(c);
			            	c.setCellType(Cell.CELL_TYPE_NUMERIC);
			            }
			        }
			    }
			}
			if(mergedCallBack != null)
			{
				mergedCallBack.setMegerdCall(workBook);
			}
			os = new FileOutputStream(targetPath);
			workBook.write(os);
			os.flush();
		} 
		catch (FileNotFoundException e) 
		{
			LOGGER.error("exception message: ",e);
		}
		catch (IOException e) 
		{
			LOGGER.error("exception message: ",e);
		} 
		catch (Exception e) 
		{
			LOGGER.error("exception message: ",e);
		}
		finally {
			if(is != null)
			{
				try {
					is.close();
				} catch (IOException e) {
					LOGGER.error("exception message: ",e);
				}
			}
			if(os != null)
			{
				try {
					os.close();
				} catch (IOException e) {
					LOGGER.error("exception message: ",e);
				}
			}
		}
	}
}

 

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

public interface MergedCallBack
{
	void setMegerdCall(HSSFWorkbook workBook);
}