poi组件操作导入Excel问题

路过，来学习一下！

POIFSFileSystem fs = new POIFSFileSystem("D://00025aa.xls")); HSSFWorkbook workbook = new HSSFWorkbook(fs);

这是我写的工具类里面的初始化函数，希望能够对你有所帮助：
public void init(String file_name){
try {
myxls = new FileInputStream(file_name);
workbook = new HSSFWorkbook(myxls);
sheetNum = workbook.getNumberOfSheets();
} catch (Exception e) {
throw new RuntimeException("打开Excel文件[" + file_name + "]出错,请检查Excel文件是否正确!");
}
}