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The left-hand side of an assignment expression may not be an optional property access.ts(2779)

背景写 ts 和 react ref 时有如下报错 https://img blog.csdnimg.cn/70ad66682f2e4c14aa76b2f981ac3b25.png 意思就是 iframeRef.current 可能为空，我们不能这样直接赋值，那我们只要告诉编辑器 ifram...
2022-07-07 10:25【zh阿飞】
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解密GD32 MCU产品家族，开发板该怎么选？

关注、星标公众号，直达精彩内容 5fa6d42afaa7bd508be9931615a39fe9.png https://img blog.csdnimg.cn/img convert/5fa6d42afaa7bd508be9931615a39fe9.png 来源：芯师爷 1、1、2、3、5...
2022-07-07 10:26【李肖遥】
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浅谈估值模型 (二): PE指标II——PE Band

1：本文主要介绍一个小众的估值指标——PE Band； 2：本文主要为理念的讲解，模型也是笔者自建； 3：本文主要数据均通过Tushare ID：444829 金融大数据平台接口获取； 4：笔者希望搭建出一套交易体系，原则是只做干货的分享。后续将更新更多模块，但工作学习之余的闲暇时间有限，更新速度...
2022-07-07 10:26【Simon Cao】
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金融数据获取（三）当爬虫遇上要鼠标滚轮滚动才会刷新数据的网页（保姆级教程）

目录 1. 谁这么会给我整活儿 1.%20%E8%B0%81%E8%BF%99%E4%B9%88%E4%BC%9A%E7%BB%99%E6%88%91%E6%95%B4%E6%B4%BB 2. Selenium模拟网页浏览器爬取 2.%20Selenium%E6%A8%A1%E6%8B%9F%E7...
2022-07-07 10:26【Simon Cao】
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SQL injection -- Audit of PHP source code (take SQL lab 1~15 as an example) (super detailed)

sql Inject ——php Source audit （ With sql lab 1~15 For example ）（ Hyperdetail sql Inject sql Inject ：web The application does not judge the legitima...
2022-07-07 12:23【hcjtn】
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About sqli lab less-15 using or instead of and parsing

Follow the old train of thought , Try the means of reporting errors , It is found that no error statement is output , View source code , It is found ...
2022-07-07 12:23【hcjtn】
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SQL lab 11~20 summary (subsequent continuous update) contains the solution that Firefox can't catch local packages after 18 levels

The way of transferring parameters of eleven questions has become post The ginseng But the injection method is similar 1. Determine the injectio...
2022-07-07 12:23【hcjtn】
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SQL lab 21~25 summary (subsequent continuous update) (including secondary injection explanation)

Twenty one levels Input admin It seems that there is no difference Let's capture the twenty-one level ： https://img blog.csdnimg.cn/805734981c05...
2022-07-07 12:24【hcjtn】
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In the small skin panel, use CMD to enter the MySQL command, including the MySQL error unknown variable 'secure_ file_ Priv 'solution (super detailed)

Use in small leather panels cmd Get into mysql command , contain mysql error unknown variable 'secure file priv’ resolvent （ Hyperdetail ） 1. Accor...
2022-07-07 12:24【hcjtn】
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SQL head injection -- injection principle and essence

SQL head Inject Let's talk about before head injection , I want to emphasize ： When there is no source code , You must try more to do penetration ...
2022-07-07 12:24【hcjtn】
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SQL lab 26~31 summary (subsequent continuous update) (including parameter pollution explanation)

sql lab 26 : At the beginning, we try to use ?id=1’ and 1=2 – q, Find out https://img blog.csdnimg.cn/a935ac95bb0243609d809824695d4871.png?x oss pr...
2022-07-07 12:24【hcjtn】
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SQL Lab (32~35) contains the principle understanding and precautions of wide byte injection (continuously updated later)

32~35 Contains the Principle understanding and precautions of wide byte injection sql lab 32 Let's start with 32 Pass on a parameter , Find out ...
2022-07-07 12:24【hcjtn】
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SQL Lab (36~40) includes stack injection, MySQL_ real_ escape_ The difference between string and addslashes (continuous update after)

36~40 Including Stack Injection ,Mysql real escape string and addslashes difference sql lab 36 Just like the previous level , This question is ri...
2022-07-07 12:24【hcjtn】
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SQL Lab (41~45) (continuous update later)

41~45 sql lab 41 And 40 It's the same , Using stack injection , Time blind note , We found that it was just the different way of wrapping 1. Resol...
2022-07-07 12:24【hcjtn】
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sql-lab (54-65)

54~60 sql lab 54 from 54 Turn off and start , The level began to be difficult 54 Off only allows us to enter statements ten times , After ten sente...
2022-07-07 12:24【hcjtn】
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File upload vulnerability - upload labs (1~2)

File upload vulnerability ——upload labs（1~2） The user uploaded a pointing script file , And through this script, you get the ability to execute ser...
2022-07-07 12:24【hcjtn】
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SQL Lab (46~53) (continuous update later) order by injection

（46~50） sql lab 46 As soon as you enter 46 Close the page and prompt us to use sort ： Failed to transfer the external chain picture , The origin s...
2022-07-07 12:24【hcjtn】
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Ctfhub -web SSRF summary (excluding fastcgi and redI) super detailed

CTFHub web ssrf Practice summary One , Intranet access Try to access at 127.0.0.1 Of flag.php Well So we can directly build url： /?url=http://...
2022-07-07 12:24【hcjtn】
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RHSA first day operation

Catalog subject %E9%A2%98%E7%9B%AE NAT Pattern NAT%E6%A8%A1%E5%BC%8F IP: IP%3A%E2%80%8B SSH（ through ） SSH%EF%BC%88%E9%80%9A%EF%BC%89 The Inte...
2022-07-07 12:24【Miracle_ ze】
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Static comprehensive experiment

https://img blog.csdnimg.cn/20210713192657242.png?x oss process=image/watermark,type ZmFuZ3poZW5naGVpdGk,shadow 10,text aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L...
2022-07-07 12:25【Miracle_ ze】
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The left-hand side of an assignment expression may not be an optional property access.ts(2779)

解密GD32 MCU产品家族，开发板该怎么选？

浅谈估值模型 (二): PE指标II——PE Band

金融数据获取（三）当爬虫遇上要鼠标滚轮滚动才会刷新数据的网页（保姆级教程）

SQL injection -- Audit of PHP source code (take SQL lab 1~15 as an example) (super detailed)

About sqli lab less-15 using or instead of and parsing

SQL lab 11~20 summary (subsequent continuous update) contains the solution that Firefox can't catch local packages after 18 levels

SQL lab 21~25 summary (subsequent continuous update) (including secondary injection explanation)

In the small skin panel, use CMD to enter the MySQL command, including the MySQL error unknown variable 'secure_ file_ Priv 'solution (super detailed)

SQL head injection -- injection principle and essence

SQL lab 26~31 summary (subsequent continuous update) (including parameter pollution explanation)

SQL Lab (32~35) contains the principle understanding and precautions of wide byte injection (continuously updated later)

SQL Lab (36~40) includes stack injection, MySQL_ real_ escape_ The difference between string and addslashes (continuous update after)

SQL Lab (41~45) (continuous update later)

sql-lab (54-65)

File upload vulnerability - upload labs (1~2)

SQL Lab (46~53) (continuous update later) order by injection

Ctfhub -web SSRF summary (excluding fastcgi and redI) super detailed

RHSA first day operation

Static comprehensive experiment

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