POI报表

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.List;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
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.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
import org.springframework.stereotype.Controller;

import com.om.check.model.MonthCheck;
import com.om.check.service.MonthCheckService;

@Controller("/printmanager")
public class PrintDispatchAction extends DispatchAction {

	@Resource(name = "monthCheckService")
	private MonthCheckService monthCheckService;
	
	// 考核打印
	public ActionForward printCheck(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {

		response.setCharacterEncoding("utf-8");
		
		

		String year = "";
		String month = "";
		
		String yearStr = request.getParameter("year");
		if(!"".equals(yearStr))
		{
			year = yearStr;
		}
		String monthStr = request.getParameter("month");
		if(!"".equals(monthStr))
		{
			month = monthStr;
		}
		
		
		//UUID uuid = UUID.randomUUID();
		String fileName ="/check/"+year+"年"+month+"月"+"任务月度考核";
		
		response.setHeader("Content-Disposition","attachment;filename="+fileName+".xls");//指定下载的文件名
		response.setContentType("application/vnd.ms-excel"); 

		String path = request.getSession().getServletContext().getRealPath(fileName+".xls");
		System.out.println(path);
		createWorkbook(path, year, month,response.getOutputStream());
		return null;
	}
	
	
	public void createWorkbook(String fileName, String year, String month,OutputStream   output) {
		
		
		
		
		
		// 创建新的Excel 工作簿
		HSSFWorkbook workbook = new HSSFWorkbook();
		// 在Excel工作簿中创建一个名位FIRST的工作表
		HSSFSheet sheet = workbook.createSheet("assessment");
		// 设置表格的样式
		HSSFCellStyle style0 = workbook.createCellStyle();
		// 在索引0的位置创建行，对应着第一行
		HSSFRow row = sheet.createRow((short) 0);

		HSSFCell cell = row.createCell((short) 0);

		HSSFFont font0 = workbook.createFont();

		// 写单元格的标题
		// 指定列宽度
		sheet.setColumnWidth((short) 0, (short) (15 * 256));
		sheet.setColumnWidth((short) 1, (short) (20 * 256));
		sheet.setColumnWidth((short) 2, (short) (20 * 256));
		sheet.setColumnWidth((short) 3, (short) (20 * 256));

		font0.setFontHeightInPoints((short) 10);
		font0.setFontName("宋体");
		// font0.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
		style0.setFont(font0);

		style0.setAlignment(HSSFCellStyle.ALIGN_LEFT);
		style0.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);

		style0.setBorderBottom(HSSFCellStyle.BORDER_THIN);
		style0.setBorderLeft(HSSFCellStyle.BORDER_THIN);
		style0.setBorderRight(HSSFCellStyle.BORDER_THIN);
		
		style0.setBorderTop(HSSFCellStyle.BORDER_THIN);
		cell.setCellStyle(style0);
				cell.setCellValue("被考核人");
		cell = row.createCell((short) 1);
		cell.setCellStyle(style0);
		cell.setCellValue("本月考核的任务数量");
		cell = row.createCell((short) 2);
		cell.setCellStyle(style0);
		cell.setCellValue("月度考核总分数");
		cell = row.createCell((short) 3);
		cell.setCellStyle(style0);
		cell.setCellValue("考核年月");

		// TODO,从数据库中读取数据
				List<MonthCheck> list = monthCheckService.findChecksByYearAndMonth(
				year, month);
		String date = year + "年" + month + "月";
		if (list != null && list.size() > 0) {
			for (int i = 0; i < list.size(); i++) {
				MonthCheck monthCheck = (MonthCheck) list.get(i);
				row = sheet.createRow((short) i + 1);
				HSSFCell[] data = new HSSFCell[4];
				for (short j = 0; j < 4; j++) {
					// cell.setCellStyle(style0);
					data[j] = row.createCell(j);
					data[j].setCellStyle(style0);
				}
				data[0].setCellValue(monthCheck.getCheckMan());
				data[1].setCellValue(monthCheck.getMissionNumer());
				data[2].setCellValue(monthCheck.getMonthScores());
				data[3].setCellValue(date);

			}
		}

				FileOutputStream fos = null;

		try {
			fos = new FileOutputStream(fileName);
						workbook.write(output);
		} catch (IOException e) {

			e.printStackTrace();
		} finally {
			try {
				output.close();
				fos.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

}