excel表格导入数据库后台JAVA方法

1.判断文件类型

public class ReadExcal {
    /**
     * 对外提供读取excel 的方法
     * */
    public List> readExcel(File file) throws IOException {
        String fileName = file.getName();
        System.out.println("文件名："+fileName);
        String extension = fileName.lastIndexOf(".") == -1 ? "" : fileName
                .substring(fileName.lastIndexOf(".") + 1);
        System.out.println("文件类型："+extension);
        if ("xls".equals(extension)) {
            return read2003Excel(file);
        } else if ("xlsx".equals(extension)) {
            return read2007Excel(file);
        } else {
            throw new IOException("不支持的文件类型");
        }
    }

2.版本是否正确

 public static Workbook create(InputStream inp) throws IOException,InvalidFormatException {
        if (!inp.markSupported()) {
            inp = new PushbackInputStream(inp, 8);
        }
        if (POIFSFileSystem.hasPOIFSHeader(inp)) {
            return new HSSFWorkbook(inp);
        }
        if (POIXMLDocument.hasOOXMLHeader(inp)) {
            return new XSSFWorkbook(OPCPackage.open(inp));
        }
        throw new IllegalArgumentException("你的excel版本目前poi解析不了");
    }

3.不同类型对应方法

 /**
     * 读取 office 2003 excel
     * 
     * @throws IOException
     * @throws FileNotFoundException
     */
    private static List> read2003Excel(File file)
            throws IOException {
        List> list = new LinkedList>();
        Workbook hwb=null;
		try {
			hwb = create(new FileInputStream(file));
		} catch (InvalidFormatException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
       
        //HSSFWorkbook hwb = new HSSFWorkbook(new FileInputStream(file));
        //表单里的第几张表
        int size=hwb.getNumberOfSheets();
        for(int k=0;k linked = new LinkedList