不属于SQL注入防范措施的是（ ）。
- A.使用预编译语句，绑定变量
- B.对用户提交的数据进行严格过滤
- C.使用安全函数
- D.使用动态SQL语句
正确答案及解析
正确答案
解析
SQL注入其实就是恶意用户通过在表单中填写包含SQL关键字的数据来使数据库执行非常规代码的过程。
1.永远不要信任用户的输入。对用户的输入进行校验，可以通过正则表达式，或限制长度；对单引号和双"-"进行转换等。
2.永远不要使用动态拼装sql，可以使用参数化的sql或者直接使用存储过程进行数据查询存取。
3.永远不要使用管理员权限的数据库连接，为每个应用使用单独的权限有限的数据库连接。
4.不要把机密信息直接存放，加密或者hash掉密码和敏感的信息。
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