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Welcome to NestJs Travel Series Interceptor is a class that implements the NestInterceptor interface and is decorated by the @Injectable decorator. Interceptor is an application based on AOP programming idea. The following are commonly used functions: Execute additional logic before or after method execution, which is generally not part of t ...

1 technology stack egg+node Project Online Address http://47.100.30.67:7001 Project git address https://github.com/jiqingpeng/mars/tree/master/fe/egg-example 2 Quick Start egg officially recommends that scaffolding be used directly and that projects can be generated quickly with a few simple instructions (npm > = 6.1.0): mkdir egg-exam ...

Save logs in log files // app.js var logger = require('morgan'); var fs = require('fs') var logDirectory = path.join(__dirname, 'log') fs.existsSync(logDirectory) || fs.mkdirSync(logDirectory) var accesLogStream = FileStreamRotator.getStream({ date_format: 'YYYYMMDD', filename: path.join(logDirectory, 'access-%DATE%.log'), frequency: 'dai ...

Welcome to NestJs Learning Tour Series The Conduit Partners familiar with Linux commands should be familiar with "pipe operators". ls -la | grep demo "|" is the pipe operator, which passes the output of the left command as input to the right command and supports cascading, so that complex commands can be alternated by the p ...

Welcome to NestJs Learning Tour Series Traditional Web applications to detect user login, privilege judgment and so on are done in the controller layer or middleware layer. In the current recommended modular and component architecture, functional recommendations of different responsibilities are split into different class files. NestJs has don ...

Welcome to NestJs Travel Series Modular Modules in NestJs are the basic elements for building and organizing business units. Decorative module @Module() is used to declare the meta-information of the module: Which service providers are exported by this module Which dependency modules are imported into this module Which controllers are provided ...

webpack4.0 (1) Installation and use of webpack 1. Introduction webpack is a packaging tool, which handles js files by default, can also handle other types of files with loaders, and can simplify our development process with plug-ins. 2. Configuration environment First install the preparation environment, node, because webpcak is a node-based pa ...

Nodejs Recognizes Picture Types It is inaccurate to obtain the image format by cutting the suffix of the file name, because the file suffix can be changed forcibly, and such a. gif picture can also be saved as. jpg. So how do we do file type checking on Node? Judging Picture Format by File Header Identification In fact, it is very simple, each ...

Full Demo Address The demo was written by myself, so I can't guarantee it will run until there are environmental problems.If you are too lazy to write, move on and read the article. Most of the code even gives you the output information.koa-demo Introduction to Official Website Created by Express's original team, koa is dedicated to becoming a ...

The last article mentioned the shortcomings of cookie s and suggested that session is one way to solve the shortcomings.This article tells you how to use session. The author used the file save session method.If you don't want to save in memory or database, remember to use the appropriate module. Below are two ways to use memory storage and fil ...