查询资料才发现：Node Redis版本V4之后，连接语法变了。
Starting from v4 of node-redis library, you need to call client.connect() after initializing a client. See this migration guide.
新语法：
const redis = require('redis')
const client = redis.createClient({ socket: { port: 6379 } })
client.connect()
client.on('connect', () =>{
console.log('connected')
})
You might also want to consider running the client connect method with await in an asynchronous function. So you don't have to worry about event listeners.
const redis = require('redis')
(async () =>{
try {
const client = redis.createClient({ socket: { port: 6379 } })
await client.connect()
console.log('connected')
} catch (err) {
console.error(err)
}
})()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[Example]:
const redis = require("redis")
(async () =>{
try {
const client = redis.createClient({
socket: { port: 6379 },
legacyMode: true,
})
await client.connect()
console.log("connected")
await client.v4.set("key4", "value2", {
NX: true,
})
client.set("key3", "value3", "NX", (err, reply) =>{})
await client.get("key4", function (err, v) {
console.log("redis get hello err,v", err, v)
})
client.set("student1", "Laylaa1", function (err, reply) {
if (err) {
console.log(err)
callback(err, null)
return
}
console.log(reply)
})
} catch (err) {
console.error(err)
}
})()
NodeJS对mysql数据库的简单操作1.
打开软件新建一个空的文件夹
2.
然后引入mysql依赖 npm install mysql 1 完成后对应文件夹下会生成一个node_modules的文件夹,我们不需要去管它
3.
编写mysql.js文件 // 导入mysql依赖constmysql=require("mysql")// 获取
