java实现excel表格导出数据

/**
	 * 导出清单 eb中 firstRow(EntityBean) 列表第一行数据，键值对(不包含序号)例:("name","姓名")
	 * data(EntityBean[]) 列表数据
	 * 
	 * @author zhaojq
	 */
	public PR exportData(EntityBean eb)
	{
		if (eb == null)
		{
			return new PR(0, "参数为空", null);
		}
		try
		{
			// 创建表格文件
			String rootpath = NameedPathUtil.getDefaultSavePath();
			String filepath = "/LSIP/excel/";
			File f = new File(rootpath + filepath);// 创建文件夹路径
			// 如果文件夹不存在则创建
			if (!f.exists() && !f.isDirectory())
			{
				f.mkdirs();
			}
			String filename = System.currentTimeMillis() + ".xls";
			File file = new File(f, filename);
			if (!file.exists())
			{
				file.createNewFile();
			}
			EntityBean firstRow = eb.getBean("firstRow");
			EntityBean[] data = eb.getBeans("data");
			// 创建工作薄
			WritableWorkbook workbook = Workbook.createWorkbook(file);
			// 创建新的一页
			WritableSheet sheet = workbook.createSheet("第1页", 0);
			// Label(列,行,数据)

			// 第一行
			String[] keys = firstRow.getBeanFieldNames();// 获取表头key
			for (int i = 0; i < keys.length; i++)
			{
				Label firstrow = new Label(i, 0, firstRow.getString(keys[i]));
				sheet.addCell(firstrow);
			}

			// 创建数据行
			for (int i = 0; i < data.length; i++)
			{
				for (int j = 0; j < keys.length; j++)
				{
					Label datarow = new Label(j, 1 + i, data[i].getString(keys[j]));
					sheet.addCell(datarow);
				}
			}
			workbook.write();
			workbook.close();
			String contex = LSIPConfigUtil.getDownloadConfig();
			return new PR(1, "", String.format("%sLEAP/Download/default%s%s", contex, filepath, filename));
		}
		catch (Exception e)
		{
			Global.getInstance().LogError(e);
			return new PR(0, e.toString(), null);
		}
	}

/**
	 * 考试清单导出
	 */
	public PR exportExamQD(SearchParameters spar)
	{
		try
		{
			EntityBean par = new EntityBean();
			spar.setOrder("seatno");
			spar.setPageSize(10000);
			EntityBean[] list = examsearch4eb(spar);
			
			if(StringUtil.IsNullOrEmpty(list))return new PR(1,"查询结果为空",null);
			//第一行数据
			EntityBean firstBean = new EntityBean();
			firstBean.set("areaname", "地区");
			firstBean.set("examroomid", "考试中心");
			firstBean.set("examsubject", "考试科目");
			firstBean.set("examtime", "考试时间");
			firstBean.set("cardno", "证件号码");
			firstBean.set("personname", "姓名");
			firstBean.set("mobile", "手机号");
			firstBean.set("examstate", "考试报名状态");
			firstBean.set("examscore", "成绩");
			firstBean.set("seatno", "座位号");
			firstBean.set("address", "通讯地址");
			for(int i = 0;i < list.length;i++)
			{
				EntityBean _data = list[i];
				String areaname = zonepro.getInstance().getAreaName(_data.getString("areaid"));
				_data.set("areaname", areaname);
				
				if(_data.getString("examroomid") != null)
				{
					leapcodevalue _examroomid= CodeTypeCache.getInstance().getCodeValue("LSIP_examroom",_data.getString("examroomid"));
					if(_examroomid != null)
						_data.set("examroomid", _examroomid.getcodevalue());
				}
				if(_data.getString("examsubject") != null)
				{
					leapcodevalue _examsubject= CodeTypeCache.getInstance().getCodeValue("LSIP_examsubject",_data.getString("examsubject"));
					if(_examsubject != null)
						_data.set("examsubject", _examsubject.getcodevalue());
				}
				if(_data.getString("examtype") != null)
				{
					leapcodevalue _examtype= CodeTypeCache.getInstance().getCodeValue("LSIP_examtype",_data.getString("examtype"));
					if(_examtype != null)
						_data.set("examtype", _examtype.getcodevalue());
				}
				if(_data.getString("examstate") != null)
				{
					leapcodevalue _examstate= CodeTypeCache.getInstance().getCodeValue("LSIP_examstate",_data.getString("examstate"));
					if(_examstate != null)
						_data.set("examstate", _examstate.getcodevalue());
				}
				if(_data.getString("examtime") != null)
				{
					_data.set("examtime", _data.getString("examtime").substring(0, 16));
				}
			}
			par.set("firstRow", firstBean);
			par.set("data", list);
			return new BaseDataService().exportData(par);
		}
		catch (Exception e)
		{
			Global.getInstance().LogError(e);
			return new PR(0,e.getMessage(),null);
		}
	}