public static byte[] getFileBytes(String file) {
        try {
            File f = new File(file);
            int length = (int) f.length();
            byte[] data = new byte[length];
            new FileInputStream(f).read(data);
            return data;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
@ClassName: CommonUtil
@Description: TODO
@Author: Summer
@Date: 2021/6/15 20:12
@Version: v1.0.0
@Description:
src/main/java/com/summersec/attack/deser/util/CommonUtil.java