java解析excel

一、问题背景
今天使用jxl.jar包解析excle时，发现一个错误。运行以下程序时会提示如下错误：jxl.read.biff.BiffException: Unable to recognize OLE stream
at jxl.read.biff.CompoundFile.<init>(CompoundFile.java:99)
at jxl.read.biff.File.<init>(File.java:113)
at jxl.Workbook.getWorkbook(Workbook.java:243)
at jxl.Workbook.getWorkbook(Workbook.java:228)
at com.ssm.test.LAAgentTest.testReadExcel2003

代码如下：

@Test
	public void testReadExcel2003()  {
	try {
			String path = "e:/class.xlsx";
			InputStream ins = new FileInputStream(path);
			jxl.Workbook tWorkbook = jxl.Workbook.getWorkbook(ins);
			jxl.Sheet sheet = tWorkbook.getSheet(0);
			System.out.println("第一个工作簿的名称是:"+sheet.getName());
			int rows = sheet.getRows();
			for(int i=0; i<rows; i++) {
				if(i<2) {
					continue;
				}
				jxl.Cell[] cells = sheet.getRow(i);
				for(int j=0; j<cells.length; j++) {
					System.out.println(cells[j].getContents());
				}
			}
		} catch(Exception ex) {
			ex.printStackTrace();
		}
		
	}

二、解决办法
后来发现是因为jxl不支持2007版excle的解析。因此，打开class.xlsx文件后，选择另存为，保存类型选择2003版本。将代码中的class.xlsx改为另存为excle的名称，运行程序没有问题。

三、使用apache的poi.jar解析excle，兼容2003和2007

废话不说，直接上代码：

@Test
public void testReadExcel2007() {

     try {
			String path = "e:/class.xlsx";
			InputStream ins = new FileInputStream(path);
			Workbook wb = WorkbookFactory.create(ins);
			Sheet sheet = wb.getSheetAt(0);
			int columnNum = sheet.getRow(0).getLastCellNum() - sheet.getRow(0).getFirstCellNum();
			for (int j = 0; j < sheet.getLastRowNum(); j++) {
				Row row = sheet.getRow(j);
				for (int i = 0; i < columnNum; i++) {
					Cell cell = row.getCell(i, Row.CREATE_NULL_AS_BLANK);
					System.out.println(cell);
				}
			}
		} catch (Exception ex) {
			ex.printStackTrace();
		}
		
	}