遍历获得文件夹下的所有文件
public void traverseFolder2(String path) { File file = new File(path); if (file.exists()) { File[] files = file.listFiles(); if (null == files || files.length == 0) { System.out.println("文件夹是空的!"); return; } else { for (File file2 : files) { if (file2.isDirectory()) { System.out.println("文件夹:" + file2.getAbsolutePath()); traverseFolder2(file2.getAbsolutePath()); } else { String absolutePath = file2.getAbsolutePath(); System.out.println("文件:" + absolutePath); int index = absolutePath.lastIndexOf(".");
if(index != -1){
String suffix = absolutePath.substring(index);
if (".xlsx".equals(suffix.toLowerCase()) || ".xls".equals(suffix.toLowerCase())) {
}
}
} } } } else { System.out.println("文件不存在!"); } }