sql注入中最多见的就是字符串拼接,研发人员对字符串拼接应该引发重视,不该忽略。python

  错误用法1:mysql

    sql = "select id, name from test where id=%d and name='%s'" %(id, name) sql

    cursor.execute(sql)微信

  错误用法2:函数

    sql = "select id, name from test where id="+ str(id) +" and name='"+ name +"'" 字符串

    cursor.execute(sql)string

  正确用法1:test

    args = (id, name) select

    sql = "select id, name from test where id=%s and name=%s" sql语句

    cursor.execute(sql, args)

    execute()函数自己有接受sql语句参数位的,能够经过python自身的函数处理sql注入问题。

  正确用法2:

    name = MySQLdb.escape_string(name)

    sql = "select id, name from test where id=%d and name='%s'" %(id, name)

    cursor.execute(sql)

    python模块MySQLdb自带针对mysql的字符转义函数escape_string,能够对字符串转义

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