JAVA ZIP打包和POI导出

	/**
	 * 导出Excel功能
	 * @param sql 获取数据要执行的SQL语句
	 * @param params SQL语句的参数
	 * @param column Excel表头，如果有扩展属性的话，可定义为：户号,户名,营业区域$ALL_BS_INFO
	 * @param excelRowsLimit 没个Excel单元格的条数
	 * @param httpServletRequest 
	 * @return 改Excel的下载地址
	 * @throws Exception
	 */
	public String expExcel(String sql, List params, String[] column,
			int excelRowsLimit, HttpServletRequest httpServletRequest)
			throws Exception {
		DBTool dbTool = null;
		String downloadUrl = "";
		Record[] rds = null;
		Record record = null;
		ZipOutputStream out =  null;
		try {
			dbTool = new DBTool();
			rds = dbTool.executeQuery(sql, params);
//			System.out.println("L:  "+rds.length);
			int genExcelRowsLimit = excelRowsLimit <= 0 ? ServiceLocator.getInstance().getWebAppConfig().getGenExcelRowsLimit(): excelRowsLimit;
			
			String path = ServiceLocator.getInstance().getWebAppConfig().getExcelTempDirectory();
			String zipPath = httpServletRequest.getSession().getId()+ System.currentTimeMillis() + ".zip";
			downloadUrl = "http://" + httpServletRequest.getServerName() + ":"+ httpServletRequest.getServerPort()
					+ httpServletRequest.getContextPath()+ "/GetTempFileServlet?fileName=" + zipPath;
			if (path == null) {
				path = httpServletRequest.getSession().getServletContext().getRealPath("download");
				downloadUrl = "http://" + httpServletRequest.getServerName()
						+ ":" + httpServletRequest.getServerPort()+ httpServletRequest.getContextPath() + "/download"
						+ "/" + zipPath;
			}
//			System.out.println(path+System.getProperty("file.separator")+zipPath);
			File file = new File(path+System.getProperty("file.separator")+zipPath);
			if(!file.exists()){
				file.createNewFile();
			}
			out = new ZipOutputStream(new FileOutputStream(file));
			DropBeanMap dbm = DropBeanMap.getInstance();

			int fileCount = rds.length % genExcelRowsLimit == 0 ? rds.length/genExcelRowsLimit : rds.length / genExcelRowsLimit + 1;
//			System.out.println("fileCount "+fileCount);
			for (int i = 0; i < fileCount; i++) {
				int temp = i * genExcelRowsLimit;

				HSSFWorkbook wb = new HSSFWorkbook();
				HSSFSheet hs = wb.createSheet();

				HSSFCellStyle style = wb.createCellStyle();
				style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
				style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
				style.setBorderRight(HSSFCellStyle.BORDER_THIN);
				style.setBorderTop(HSSFCellStyle.BORDER_THIN);
				style.setFillForegroundColor(HSSFColor.LIGHT_GREEN.index);
				style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
				HSSFFont font = wb.createFont();
				font.setFontHeightInPoints((short) 11);
				style.setFont(font);
				HSSFCellStyle style1 = wb.createCellStyle();
				style1.setBorderBottom(HSSFCellStyle.BORDER_THIN);
				style1.setBorderLeft(HSSFCellStyle.BORDER_THIN);
				style1.setBorderRight(HSSFCellStyle.BORDER_THIN);
				style1.setBorderTop(HSSFCellStyle.BORDER_THIN);
				style1.setFillForegroundColor(HSSFColor.ORANGE.index);
				style1.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
				HSSFFont font1 = wb.createFont();
				font1.setFontHeightInPoints((short) 15);
				font1.setBoldweight((short) 700);
				style1.setFont(font);
				HSSFCellStyle style2 = wb.createCellStyle();
				style2.setWrapText(true); // 设置自动换行

				HSSFRow hr = hs.createRow(0);
				for (int j = 0; j < column.length; j++) {
					// 设置表头
					String value = "";
					if (column[j].indexOf("$") < 0) {
						value = column[j];
					} else {
						value = column[j].substring(0, column[j].indexOf("$"));
					}
					int len = value.length();
					hs.setColumnWidth((short) j, (short) (len * 1600));
					HSSFCell hc = hr.createCell((short) j);
					hc.setEncoding(HSSFCell.ENCODING_UTF_16);
					hc.setCellStyle(style1);
					hc.setCellValue(value);
				}
				
				int eachCount =  genExcelRowsLimit;
				if(i==(fileCount-1) && rds.length % genExcelRowsLimit != 0 ){
					eachCount = rds.length % genExcelRowsLimit-1;
				}
//				System.out.println("i: "+i+" eachCount: "+eachCount);
				for (int j = 0; j < eachCount; j++) {
					hr = hs.createRow(j + 1);
//					System.out.println("temp + j: "+(temp + j));
					record = rds[temp + j];
					for (int r = 0; r < column.length; r++) {
						String dropName = "";
						String value = record.getString(r + 1) == null ? "": record.getString(r + 1).toString();
						value = value.replaceAll(";alt", "'");
						if (column[r].indexOf("$") >= 0) {
							dropName = column[r].substring(column[r].indexOf("$") + 1, column[r].length());
							value = dbm.getDropLabel(dropName, value);
						}
						hr.setHeight((short) 500);
						HSSFCell hc = hr.createCell((short) r);
						hc.setCellStyle(style);
						hc.setEncoding(HSSFCell.ENCODING_UTF_16);
						hc.setCellValue(value);
						hc.setCellStyle(style2);
					}
				}
				
				out.putNextEntry(new ZipEntry(i+".xls"));
				
				wb.write(out);
			}
			out.close();
			
		} catch (Exception e) {
			e.printStackTrace();
			throw new highsoft.framework.exceptions.BaseRunException(
					"导出excel出错！", e);
		} finally {
			if (dbTool != null) {
				dbTool.closeConnection();
				dbTool = null;
			}
			if(null != out){
			      try{
			    	  out.flush();
			    	  out.close();
			    	  out = null;
			      }
			      catch(IOException e){}; 
			}
		}
		return downloadUrl;
	}

	/**
	  * 遍历目录并添加文件.
	  * @param jos - JAR 输出流
	  * @param file - 目录文件名
	  * @param pathName - ZIP中的目录名
	  * @throws IOException
	  * @throws FileNotFoundException
	  */
	 private static void recurseFiles(ZipOutputStream jos, File file,
			String pathName) throws IOException, FileNotFoundException {
		byte buf[] = new byte[1024];
		if (file.isDirectory()) {
			pathName = pathName + file.getName() + "/";
			jos.putNextEntry(new ZipEntry(pathName));
			String fileNames[] = file.list();
			if (fileNames != null) {
				for (int i = 0; i < fileNames.length; i++)
					recurseFiles(jos, new File(file, fileNames[i]), pathName);
			}
		} else {
			ZipEntry jarEntry = new ZipEntry(pathName + file.getName());
			// System.out.println(pathName + " " + file.getName());
			FileInputStream fin = new FileInputStream(file);
			BufferedInputStream in = new BufferedInputStream(fin);
			jos.putNextEntry(jarEntry);
			int len;
			while ((len = in.read(buf)) >= 0)
				jos.write(buf, 0, len);
			in.close();
			jos.closeEntry();
		}
	}
	 
	 /**
		 * 创建 ZIP/JAR 文件.
		 * 
		 * @param directory -
		 *            要添加的目录
		 * @param zipFile -
		 *            保存的 ZIP 文件名
		 * @param zipFolderName -
		 *            ZIP 中的路径名
		 * @param level -
		 *            压缩级别(0~9)
		 * @throws IOException
		 * @throws FileNotFoundException
		 */
	 public static void makeDirectoryToZip(File directory, File zipFile,
			String zipFolderName, int level) throws IOException,
			FileNotFoundException {
		level = (level < 0 || level > 9)? 7 : level;
		if (zipFolderName == null) {
			zipFolderName = "";
		}
		ZipOutputStream jos = new ZipOutputStream(new FileOutputStream(zipFile));
		jos.setLevel(level);
		String fileNames[] = directory.list();
		if (fileNames != null) {
			for (int i = 0; i < fileNames.length; i++)
				recurseFiles(jos, new File(directory, fileNames[i]),zipFolderName);
		}
		jos.close();
	}