nodejs快速测试
2021-05-12 00:27
标签：pm2 功能 base create eve pre false array 数据库 对于一些js功能，可以通过nodejs快速搭建测试环境 nodejs快速测试 标签：pm2 功能 base create eve pre false array 数据库 原文地址：https://www.cnblogs.com/lijianming180/p/12014337.html1、这里我们先通过express脚手架快速搭建一个项目，或者init一个空项目
2、mkdir script
3、这里假设我们的场景是MQTT接收消息并存入数据库(6字段字节数分别为212212)
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96var mqtt = require(‘mqtt‘);
var Sequelize = require(‘sequelize‘);
var sequelize = new Sequelize(‘iot‘, ‘root‘, ‘root‘,
{
host: ‘127.0.0.1‘,
dialect: ‘mysql‘,
timezone:‘+08:00‘,
pool: {
max: 5,
min: 0,
idle: 10000
}
})
var SmallU = sequelize.define(‘table1‘, {
大专栏 nodejs快速测试 id: {
type: Sequelize.INTEGER,
allowNull: false,
autoIncrement: true,
primaryKey: true
},
deviceName:{
type: Sequelize.STRING,
field:‘device_name‘,
comment:"设备id"
},
temperature: {
type: Sequelize.DOUBLE,
comment:"温度"
},
humidity: {
type: Sequelize.DOUBLE,
allowNull: false,
comment: "湿度"
},
pm25: {
type: Sequelize.DOUBLE,
allowNull: false,
comment: "PM2.5"
},
formaldehyde: {
type: Sequelize.DOUBLE,
allowNull: false,
comment: "甲醛"
},
batteryLevel: {
type: Sequelize.STRING,
field:"battery_level",
comment:"电池电量"
},
counter: {
type: Sequelize.INTEGER,
comment:"计数"
}
}, {
underscored: true,//驼峰式
freezeTableName: true,
// paranoid: true
// tableName: ‘user_less_add‘
});
sequelize.sync({force: false})
//MQTT
var client = mqtt.connect({port: 8883, host: ‘127.0.0.1‘, keepalive: 60});
let topic = ‘application/7/node/+/rx‘;
client.subscribe(topic);
client.on(‘message‘, function (topic, message, puback) {
var data = JSON.parse(message.toString());
console.log("========开始=====");
console.log(data);
console.log("========结束====");
const deviceName = data.deviceName;
var rowData = Buffer(data.data, ‘base64‘)
var temperature = parseInt(rowData.subarray(0,2).toString(‘hex‘),16)/10; //温度
var humidity = parseInt(rowData.subarray(2,3).toString(‘hex‘),16); //湿度
var pm25 = parseInt(rowData.subarray(3,5).toString(‘hex‘),16); //PM2.5
var formaldehyde = parseInt(rowData.subarray(5,7).toString(‘hex‘),16)/1000; //甲醛
var batteryLevel = parseInt(rowData.subarray(7,8).toString(‘hex‘),16); //电池电量
var counter = parseInt(rowData.subarray(8,10).toString(‘hex‘),16); //计数
SmallU.create({
deviceName:deviceName,
temperature:temperature,
humidity:humidity,
pm25:pm25,
formaldehyde:formaldehyde,
batteryLevel:batteryLevel,
counter:counter
})
});