Programming VIP

introduction In this blog post, the ape is mainly aimed at the application of transactions, and there are seven types of communication behaviors of transactions. These seven communication behaviors have different application scenarios. The following ape will discuss the respective characteristics of the seven communication behaviors Functiona ...

1. Install the flash third-party library pip3 install Flask 2. Create a flash application The project structure is shown in the figure above. Static is used to place static files, such as js files, css files and pictures. templates folder is used to place template files, namely html files. Import the flash third-party library in the proje ...

title: [native javascript project] image processing with javascript 03date: 2021-11-13 11:43:56tags: native javascript projectcategories: 30 native javascript projectsintroductionThis paper uses JavaScript to update the image of a web page. For the image processing part, this page can adjust the border width, blur and border color value of the ...

Back end development interview knowledge point Outline: Language class (C + +): Keyword function explanation: volatile action Volatile The first characteristic of keywords: variability. The so-called variability, reflected at the assembly level, is two statements. The next statement will not directly use the corresponding one of the previou ...

1, What is a dynamic agent What is dynamic proxy and why it is used? Where is dynamic proxy used in normal programming? To understand what a dynamic agent is, you first need to know what an agent is. In fact, it is very simple. Just as literally, an agent: taking care of affairs instead of others. In programming, agent is an implementation of ...

Stream jdk8 adds a new feature of Stream, which can run or calculate the data in the data source. Note: Array | set can be used as the data source for storing data. Stream cannot store data. It can only calculate the data in the data source to get a new result or a new streamstream does not affect the data in the data sourcestream is disposa ...

Spring MVC requests and responses 1, Response of spring MVC The data response methods of spring MVC are as follows: Page Jump Return string directlyReturn via ModelAndView object Write back data Return string directlyReturns an object or collection 1. Page Jump 1.1. Directly return string In the code for getting ...

1. Download Android Studio Download address: Android Developers | Android Developers 2. Download android SDK Download address: Native developer support 3. Unzip Android SDK - > View release MD file - > check whether the current HBuilderX is the same as the specified packaging version - > update HBuilderX to the corresponding ...

1, Overview Using jar package https://mvnrepository.com/artifact/commons-io/commons-io https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload Precautions for file upload In order to ensure the security of the server, the uploaded files should be placed in a directory that cannot be directly accessed by the outside world, su ...

Introduction: the virtual machine system is CentOS7. FastDFS has been installed on the original virtual machine. Due to the version problem, it cannot run. Therefore, delete the original FastDFS system and reinstall it.Note: due to the unclean deletion of FastDFS at the beginning, the incorrect version of cmake and various small problems, t ...