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preface express's built-in urlencoded () has compatibility problems. We use node's querystring to encapsulate a middleware for processing post requests for ease of use. 1, Built in middleware (common) Implementation code and notes const express = require('express'); const app = express(); // Built in middleware common // express.st ...

At present, the database is divided into: Relational database:             mysql，sqlserver，Oracle Note: the data is stored in the data table, which is stored in the computer disk Non relational database:             mongoDB，redis Note: the data is stored in the computer memory, so it is faster to read and write data To insta ...

1, Previously on I know a friend who made 380000 Yuan in just one month. I asked him how he earned it. He said that he recommended the stock limit to others. He was interrupted by someone and the other party lost... ⊙﹏⊙∥    the above is a passage. Don't take it seriously, As a "chive zero generation" ("chive yea ...

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Egg.js, an open source enterprise node of Alibaba JS framework. Compared with Express and Koa, egg JS is lighter, which is the enhancement of Koa, and the development cost and efficiency are more efficient.Sequenize, a widely used ORM framework, supports multiple data sources such as MySQL, PostgreSQL, SQLite and MSSQL.1, Install the configurat ...

When an application (client) needs a resource, it can obtain the resource from a server through http request. The server that provides resources is the web server (created with node.js in this paper). postman is used to simulate the client to send requests to the server. 1, Build HTTP server on node node uses the HTTP module to create ...

Introduction: since http is stateless and user identity information is not stored and recorded in the request response process, there are many methods for users to identify and store user identity, such as cookies, sessions and jwt. An interface service I recently made uses jwt to store and manage user information. Compared with local cookie st ...

Introduction: since http is stateless and user identity information is not stored and recorded in the request response process, there are many methods for users to identify and store user identity, such as cookies, sessions and jwt. An interface service I recently made uses jwt to store and manage user information. Compared with local cookie st ...

1 Node.js module and package1.1 moduleNode.js itself provides many modules. Each module implements a function, such as file operation module fs, HTTP module for building HTTP services, etc. each module is a javascript file and can write its own module.Each node js is a node js module, including JavaScript file (. js), json text file (. json) an ...

1. node asynchronous non blocking I/O Synchronization and asynchrony refer to the characteristics of certain methods and calls. Synchronization is when a function call is sent, the caller will not return until the result is obtained. Asynchrony is that the caller can not get the result immediately after the call is issued, but when the asynchr ...