公共POI导出Excel方法详解

package com.hwt.glmf.common;
 
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
 
import javax.servlet.http.HttpServletResponse;
 
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFRichTextString;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.CellRangeAddress;
import org.apache.poi.hssf.util.HSSFColor;
 
/**
 * 导出Excel公共方法
 * @version 1.0
 * 
 * @author wangcp
 *
 */
public class ExportExcel extends ActionSupport implements ServletRequestAware{
	
	//显示的导出表的标题
	private String title;
	//导出表的列名
	private String[] rowName ;
	
	private List dataList = new ArrayList();
	
	HttpServletResponse response;
	
	//构造方法，传入要导出的数据
	public ExportExcel(String title,String[] rowName,List dataList){
		this.dataList = dataList;
		this.rowName = rowName;
		this.title = title;
	}
			
	/*
	 * 导出数据
	 * */
	public void export() throws Exception{
		try{
			HSSFWorkbook workbook = new HSSFWorkbook();						// 创建工作簿对象
			HSSFSheet sheet = workbook.createSheet(title);		 			// 创建工作表
			
			// 产生表格标题行
	 HSSFRow rowm = sheet.createRow(0);
	 HSSFCell cellTiltle = rowm.createCell(0);
	 
	 //sheet样式定义【getColumnTopStyle()/getStyle()均为自定义方法 - 在下面 - 可扩展】
	 HSSFCellStyle columnTopStyle = this.getColumnTopStyle(workbook);//获取列头样式对象
	 HSSFCellStyle style = this.getStyle(workbook);					//单元格样式对象
	 
	 sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, (rowName.length-1))); 
	 cellTiltle.setCellStyle(columnTopStyle);
	 cellTiltle.setCellValue(title);
 		
			// 定义所需列数
			int columnNum = rowName.length;
			HSSFRow rowRowName = sheet.createRow(2);				// 在索引2的位置创建行(最顶端的行开始的第二行)
			
			// 将列头设置到sheet的单元格中
			for(int n=0;n

String title = Message.getString("manifestIExportTitle");
 	String[] rowsName = new String[]{"序号","货物运输批次号","提运单号","状态","录入人","录入时间"};
 		List dataList = new ArrayList();
 		Object[] objs = null;
 		for (int i = 0; i