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過濾非法字符

def sql_filter(sql, max_length=20):dirty_stuff = ["\"", "\\", "/", "|", "&", "*", "'", "=", "-", "#", ";", "<", ">", "+", "%", "$", "(", ")", "%", "@","!"]for stuff in dirty_stuff:sql = sql.replace(stuff, "")return sql[:max_length]username = "1234567890!@#!@#!@#$%======$%|&***"username = sql_filter(username) # SQL注入 print(username)# 輸出結(jié)果是:1234567890

檢測是否包含非法字符

import re# username = "1234567890!@#!@#!@#$%======$%|&***" username = "1234567890*"# 檢測到非法字符進(jìn)入if if not re.search(u'^[_a-zA-Z0-9\u4e00-\u9fa5]+$', username):msg = u"用戶名不可以包含非法字符(!,@,#,$,%...)"print(msg)

參考：
https://www.cnblogs.com/cybermat/articles/473314.html
https://blog.csdn.net/weixin_30707875/article/details/99341309

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