Python最佳实践和最安全的方法来连接到MySQL和执行查询 [英] Python best practice and securest to connect to MySQL and execute queries

问题描述

在mysql上运行查询的最安全方法是什么，我知道MySQL和SQL注入涉及的危险.

What is the safest way to run queries on mysql, I am aware of the dangers involved with MySQL and SQL injection.

但是，我不知道如何运行查询以防止注入其他用户(Web客户端)可以操纵的变量.我曾经编写自己的转义函数，但显然这是未完成"的.

However I do not know how I should run my queries to prevent injection on the variables to which other users (webclients) can manipulate. I used to write my own escape function, but apparently this is "not-done".

我应该使用什么，以及如何使用它来通过python在MySQL数据库上安全地进行查询和插入，而又不会冒着注入mysql的风险?

What should I use and how should I use it to query and do inserts safely on a MySQL database through python without risking mysql injection?

推荐答案

为避免注入，请使用execute和%s代替每个变量，然后通过列表或元组将值作为<的第二个参数传递c0>.这是文档中的示例:

To avoid injections, use execute with %s in place of each variable, then pass the value via a list or tuple as the second parameter of execute. Here is an example from the documentation:

c=db.cursor()
max_price=5
c.execute("""SELECT spam, eggs, sausage FROM breakfast
          WHERE price < %s""", (max_price,))

请注意，这使用的是逗号，而不是％(这是直接字符串替换，不会转义). 不要这样做:

Note that this is using a comma, not % (which would be a direct string substitution, not escaped). Don't do this:

c.execute("""SELECT spam, eggs, sausage FROM breakfast
          WHERE price < %s""" % (max_price,))

此外，如果参数是字符串，则不需要在位置持有人('%s')周围加上引号.

In addition, you don't need the quotes around the position holder ('%s') if the parameter is a string.

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