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Catalog 0x01 SQL server Foundation 0x02 basic injection Some versions of SQL server have been installed by hackers. Please check the details at the end of this article. 0x01 SQL server Foundation Before learning to inject, the most important thing is to understand the specific things of SQL server, so as to better inject operations. System libr ...

This article will talk about interceptors. It is convenient to register interceptors in springboot. There are about two steps: 1. Implement HandlerInterceptor interface to create interceptor 2. Implementation of WebMvcConfigurer interface configuration interceptor   Let's use a simple example to roughly show the following specific use: Sce ...

https://www.acwing.com/problem/content/137/   The common way is to find the sum of prefixes. The maximum value of sum[i]-sum[j] is to enumerate each sum[i], that is, the right endpoint. For each number, find the left endpoint of the largest sum[j], and then find the maximum value. In the process, it can be optimized. For each right endpoin ...

Tuples are enclosed in parentheses (), where the elements are separated by commas. An element in a tuple is of any type. Tuples can be seen as a sequence that combines list or string attributes. Tuples are sequences. Similar to lists or strings, indexing and slicing are still applicable. Element in t ...

I. call call has two wonderful functions 1. Inheritance (I mentioned in the previous article that call is used to implement call inheritance. If you are interested, you can read it. https://www.cnblogs.com/pengshengguang/p/10547624.html) 2. Modify the direction of this when the function is running (to be said today) // Code segment 1 var ...

Login based on blueprint CBV mode Use blueprint and cbv mode to complete login function Jump to the home page after login Save the session in the redis database on liunx Verify whether it is the login user by using "before" request blueprint from flask import Blueprint,render_template,redirect,views,request,session user = B ...

I. preparationAdvantages of Docker to build environment: Simple operation, rapid construction and environmental isolation Common Docker operation commands and parameters: docker search # Find image from Docker Hub docker images # View local mirror list docker pull # Pull or update the specified image from the image warehous ...

sqlite3_open SQLite3 open function prototype: int sqlite3_open( const char *filename, /* Database filename (UTF-8) */ sqlite3 **ppDb /* OUT: SQLite db handle */ ); SQLite3 open is used to connect and open a database. If the database does not exist, a database file will be created and opened under the specified ...

Thread communication: wait, wake up Object method These methods can only be called when they have resources notify Wake up a thread. Wake up is not executed immediately, but wait for CPU allocation wait Wait, release lock, do not occupy CPU resources notifyAll Wake up all waiting threads Key points: effective utilization of resource ...

overview First, synchronize the following project overview: The last article shared that Jaeger link tracking, a routing middleware, had an unexpected response. The "Go China" public account was also forwarded. Many friends joined me to communicate with each other and called me "God". In fact, what God am I? It's just a loc ...