java解析xlsx表格，写入xlsx表格实例

1，下载所需jar包地址xlsx依赖jar

2，读取表格数据代码实例

	static void jx(File file) throws IOException {
		InputStream is = new FileInputStream(file);
		XSSFWorkbook xssfWorkbook = new XSSFWorkbook(is);

		XSSFSheet xssfSheet = xssfWorkbook.getSheetAt(0);

		int rowstart = xssfSheet.getFirstRowNum();
		int rowEnd = xssfSheet.getLastRowNum();

		for (int i = rowstart; i <= rowEnd; i++) {
			XSSFRow row = xssfSheet.getRow(i);
			if (null == row)
				continue;
			int cellStart = row.getFirstCellNum();
			int cellEnd = row.getLastCellNum();

			for (int k = cellStart; k <= cellEnd; k++) {
				XSSFCell cell = row.getCell(k);
				if (null == cell) {
					
					System.out.print(k+"cell null");
					continue;
				}
					

				switch (cell.getCellType()) {
				case HSSFCell.CELL_TYPE_NUMERIC: // 数字
					System.out.print(cell.getNumericCellValue() + "\t");
					break;
				case HSSFCell.CELL_TYPE_STRING: // 字符串
					System.out.print(cell.getStringCellValue() + "\t");
					break;
				case HSSFCell.CELL_TYPE_BOOLEAN: // Boolean
					System.out.println(cell.getBooleanCellValue() + "\t");
					break;
				case HSSFCell.CELL_TYPE_FORMULA: // 公式
					System.out.print(cell.getCellFormula() + "\t");
					break;
				case HSSFCell.CELL_TYPE_BLANK: // 空值
					System.out.println(" 控制");
					break;
				case HSSFCell.CELL_TYPE_ERROR: // 故障
					System.out.println(" 故障");
					break;
				default:
					System.out.print("未知类型 ");
					break;
				}

			}
			System.out.print(cellEnd +"... \n");
		}

3，写入表格代码实例

1）创建实体类

public class Export implements Serializable{
	String sjbm;
	double num;
	public String getSjbm() {
		return sjbm;
	}
	public void setSjbm(String sjbm) {
		this.sjbm = sjbm;
	}
	public double getNum() {
		return num;
	}
	public void setNum(double num) {
		this.num = num;
	}
	
}

2）写入xlsx表格实例代码，以实体类为数据载体

public void writeXls(List exportList, File file) throws Exception {

		String[] options = { "条码", "批次号", "数量" };
		XSSFWorkbook book = new XSSFWorkbook();

		CreationHelper createHelper = book.getCreationHelper();

		XSSFCellStyle style = book.createCellStyle();
		XSSFCellStyle dateStyle = book.createCellStyle();
		XSSFDataFormat format = book.createDataFormat();
		style.setWrapText(true);
		dateStyle.setWrapText(true);

		XSSFSheet sheet = book.createSheet("sheet");

		sheet.setColumnWidth(3, 13000);
		sheet.setDefaultColumnWidth(20);

		XSSFRow firstRow = sheet.createRow(0);
		XSSFCell[] firstCells = new XSSFCell[3];

		CellStyle styleBlue = book.createCellStyle(); // 样式对象
		// 设置单元格的背景颜色为淡蓝色
		styleBlue.setFillBackgroundColor(HSSFColor.GREEN.index);

		styleBlue.setVerticalAlignment(CellStyle.VERTICAL_CENTER);// 垂直
		styleBlue.setAlignment(CellStyle.ALIGN_CENTER);// 水平
		styleBlue.setWrapText(true);// 指定当单元格内容显示不下时自动换行

		Font font = book.createFont();
		font.setBoldweight(Font.BOLDWEIGHT_BOLD);
		font.setFontName("宋体");
		font.setFontHeight((short) 280);
		style.setFont(font);
		dateStyle.setFont(font);
		dateStyle.setDataFormat(format.getFormat("yyyy-mm-dd"));
		styleBlue.setFont(font);

		for (int j = 0; j < options.length; j++) {
			firstCells[j] = firstRow.createCell(j);
			firstCells[j].setCellStyle(styleBlue);
			firstCells[j].setCellValue(new XSSFRichTextString(options[j]));
		}
		getExport(sheet, style, createHelper, exportList, dateStyle);
		if (file.exists()) {
			file.delete();
		}
		file.createNewFile();

		OutputStream os = new FileOutputStream(file);
		book.write(os);
		os.close();
	}

public void getExport(XSSFSheet sheet, XSSFCellStyle style, CreationHelper createHelper, List exportList,
			XSSFCellStyle dateStyle) {
		for (int i = 0; i < exportList.size(); i++) {
			XSSFRow row = sheet.createRow(i + 1);

			Export export = exportList.get(i);
			XSSFCell hotelId = row.createCell(0);
			hotelId.setCellStyle(style);
			XSSFCell hotelName = row.createCell(1);
			hotelName.setCellStyle(dateStyle);
			XSSFCell chargeCount = row.createCell(2);
			chargeCount.setCellStyle(style);

			hotelId.setCellValue(export.getSjbm());
			hotelName.setCellValue(date);
			chargeCount.setCellValue(export.getNum());

			// ta.append("写入excel开始,行数是" + (i + 1) + "\n");
		}

	}

这样就会写入完成入下图的表格