文章目录
Node-RED开源流程网络工具
Node-RED介绍
Node-RED是一个基于Node.js的开源流程控制和网络构建工具，它提供了一个基于浏览器的流编辑器，使你可以将各种设备、API和在线服务以节点的形式拖放来构建工作流。Node-RED拥有丰富的节点库，支持多种协议转换，包括HTTP、MQTT等，非常适合用于物联网(IoT)应用的开发。
- Node-Red 是一个开源的可视化编程工具，有丰富的扩展模块可使用
- Node-Red 由IBM开发，主要用于连接连接计算机、传感器和在线服务等协议或组件，以简化它们之间的布线工作
- Node-Red 允许通过组合各部件来编写应用程序，这些部件也可以是硬件设备、Web API 、在线服务
特点和设计理念
特点和设计理念：主要特点是易于使用的可视化界面和低代码编写要求。 适合于快速原型开发和简单的数据流处理。社区活跃，提供了大量的节点（node）和功能。
Node-RDE安装
Windows安装
# 安装示例
npm install -g [email protected]
# 运行命令
运行node-red的简单方法是在命令提示符下使用命令:node-red
Docker安装
https://nodered.org/
https://nodered.org/docs/getting-started/
https://nodered.org/docs/getting-started/docker
部署命令：
docker run --network host --restart=always -v node_red_data:/data --name nodered nodered/node-red:latest
基础功能示列
HTTP发送请求
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"z": "348f8e7e04cf02b3",
"g": "2a27245260a94185",
"name": "原始数据处理",
"func": "// 开始处理数据\nvar resData = msg.payload ;\n\n//数据转换处理\n\nmsg.payload = resData.jsonKey;\n\n// 返回数据，继续传送数据\nreturn msg;\n",
"outputs": 1,
"timeout": 0,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 560,
"y": 480,
"wires": [
[
"84024ca5abe1c5e2"
]
]
},
{
"id": "8a16c3bb6d755f6f",
"type": "comment",
"z": "348f8e7e04cf02b3",
"g": "d556390223c2020e",
"name": "4、测试MQTT数据进行处理",
"info": "",
"x": 320,
"y": 1060,
"wires": []
},
{
"id": "4801a2f2afff6d6e",
"type": "mqtt in",
"z": "348f8e7e04cf02b3",
"g": "d556390223c2020e",
"name": "/test/node-red/in",
"topic": "/test/node-red",
"qos": "1",
"datatype": "auto-detect",
"broker": "8b11a1df6239c293",
"nl": false,
"rap": true,
"rh": 0,
"inputs": 0,
"x": 280,
"y": 1120,
"wires": [
[
"2943df797ec0d798",
"ab1316a0ed9a3ee2"
]
]
},
{
"id": "2943df797ec0d798",
"type": "json",
"z": "348f8e7e04cf02b3",
"g": "d556390223c2020e",
"name": "",
"property": "payload",
"action": "",
"pretty": true,
"x": 510,
"y": 1120,
"wires": [
[
"e177e86b9a77a745"
]
]
},
{
"id": "e177e86b9a77a745",
"type": "rbe",
"z": "348f8e7e04cf02b3",
"g": "d556390223c2020e",
"name": "",
"func": "rbe",
"gap": "",
"start": "",
"inout": "out",
"septopics": true,
"property": "payload.temperature",
"topi": "topic",
"x": 730,
"y": 1120,
"wires": [
[
"354de04f16fc608c"
]
]
},
{
"id": "354de04f16fc608c",
"type": "template",
"z": "348f8e7e04cf02b3",
"g": "d556390223c2020e",
"name": "",
"field": "payload",
"fieldType": "msg",
"format": "handlebars",
"syntax": "mustache",
"template": "The temperature value has changed!\n\nThis current value is payload: {{payload.temperature}}.",
"output": "str",
"x": 930,
"y": 1120,
"wires": [
[
"464d546e41402e8b",
"7b37d40aca9152f5"
]
]
},
{
"id": "464d546e41402e8b",
"type": "mqtt out",
"z": "348f8e7e04cf02b3",
"g": "d556390223c2020e",
"name": "/test/node-red/out",
"topic": "/test/node-red",
"qos": "1",
"retain": "true",
"respTopic": "",
"contentType": "",
"userProps": "",
"correl": "",
"expiry": "",
"broker": "8b11a1df6239c293",
"x": 1190,
"y": 1120,
"wires": []
},
{
"id": "ab1316a0ed9a3ee2",
"type": "debug",
"z": "348f8e7e04cf02b3",
"g": "d556390223c2020e",
"name": "/test/node-red/in",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "payload",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 540,
"y": 1220,
"wires": []
},
{
"id": "7b37d40aca9152f5",
"type": "debug",
"z": "348f8e7e04cf02b3",
"g": "d556390223c2020e",
"name": "mqtt模板中的值",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "payload",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 1180,
"y": 1220,
"wires": []
},
{
"id": "186942ee1e9dc0de",
"type": "function",
"z": "348f8e7e04cf02b3",
"g": "3229ed5ada94133f",
"name": "设置动态订阅主题",
"func": "// 定义多条主题\nvar customTopics = [\n\"hello-topic\", \n\"/test/node-red\",\n\"Environment/temperature\"\n]; // 自定义的多条主题数组\n\n// 订阅 MQTT 主题\nvar newMsg = {\n action: \"subscribe\",\n topic: customTopics, // 要订阅的主题数组\n param: \"uart\",\n timestamp: Date.now() // 时间戳\n};\nnode.send(newMsg); // 发送新消息到下一个节点\nnode.status({ text: \"订阅主题数量: \" + customTopics.length });\n",
"outputs": 1,
"timeout": 0,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 470,
"y": 760,
"wires": [
[
"ce16a7ea1a3a065c",
"7699aaf37e442f20"
]
]
},
{
"id": "deffb411f491cb4a",
"type": "inject",
"z": "348f8e7e04cf02b3",
"g": "3229ed5ada94133f",
"name": "",
"props": [
{
"p": "payload",
"v": "",
"vt": "date"
},
{
"p": "topic",
"v": "",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "",
"payload": "",
"payloadType": "date",
"x": 270,
"y": 760,
"wires": [
[
"186942ee1e9dc0de"
]
]
},
{
"id": "6bcb486e15fbe74e",
"type": "debug",
"z": "348f8e7e04cf02b3",
"g": "3229ed5ada94133f",
"name": "动态订阅设备主题-117",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "payload",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 1000,
"y": 760,
"wires": []
},
{
"id": "ce16a7ea1a3a065c",
"type": "mqtt in",
"z": "348f8e7e04cf02b3",
"g": "3229ed5ada94133f",
"name": "动态订阅设备主题",
"topic": "",
"qos": "0",
"datatype": "auto-detect",
"broker": "8b11a1df6239c293",
"nl": false,
"rap": true,
"rh": 0,
"inputs": 1,
"x": 730,
"y": 760,
"wires": [
[
"6bcb486e15fbe74e"
]
]
},
{
"id": "7699aaf37e442f20",
"type": "debug",
"z": "348f8e7e04cf02b3",
"g": "3229ed5ada94133f",
"name": "设置动态订阅主题-119",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "payload",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 740,
"y": 880,
"wires": []
},
{
"id": "38dc05da28d2c6b6",
"type": "comment",
"z": "348f8e7e04cf02b3",
"g": "3229ed5ada94133f",
"name": "3、MQTT动态订阅主题",
"info": "",
"x": 300,
"y": 700,
"wires": []
},
{
"id": "8b11a1df6239c293",
"type": "mqtt-broker",
"name": "",
"broker": "127.0.0.1",
"port": "61613",
"clientid": "",
"autoConnect": true,
"usetls": false,
"protocolVersion": "4",
"keepalive": "60",
"cleansession": true,
"autoUnsubscribe": true,
"birthTopic": "",
"birthQos": "0",
"birthRetain": "false",
"birthPayload": "",
"birthMsg": {},
"closeTopic": "",
"closeQos": "0",
"closeRetain": "false",
"closePayload": "",
"closeMsg": {},
"willTopic": "",
"willQos": "0",
"willRetain": "false",
"willPayload": "",
"willMsg": {},
"userProps": "",
"sessionExpiry": ""
}
]
TCP-示列
[
{
"id": "f4a4d8eab7935bc8",
"type": "tab",
"label": "TCP-示列2",
"disabled": false,
"info": "# https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/124195637",
"env": []
},
{
"id": "4843765b.1af508",
"type": "tcp in",
"z": "f4a4d8eab7935bc8",
"name": "TCP客戶端:1025",
"server": "client",
"host": "127.0.0.1",
"port": "1025",
"datamode": "stream",
"datatype": "utf8",
"newline": "\\n",
"topic": "",
"trim": false,
"base64": false,
"tls": "",
"x": 260,
"y": 620,
"wires": [
[
"a4f8ed1e.c28a3",
"27457a99.3109b6"
]
]
},
{
"id": "a4f8ed1e.c28a3",
"type": "debug",
"z": "f4a4d8eab7935bc8",
"name": "tcp client",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "payload",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 480,
"y": 760,
"wires": []
},
{
"id": "27457a99.3109b6",
"type": "tcp out",
"z": "f4a4d8eab7935bc8",
"name": "tcp out : 送出信息",
"host": "",
"port": "",
"beserver": "reply",
"base64": false,
"end": false,
"tls": "",
"x": 990,
"y": 620,
"wires": []
},
{
"id": "1a88d1d5.c129ae",
"type": "inject",
"z": "f4a4d8eab7935bc8",
"name": "",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "",
"payload": "temp",
"payloadType": "str",
"x": 450,
"y": 560,
"wires": [
[
"f1c7c3d.6a92c4"
]
]
},
{
"id": "d0ed337.b37dbd",
"type": "tcp in",
"z": "f4a4d8eab7935bc8",
"name": "TCP服务端:1025",
"server": "server",
"host": "",
"port": "1025",
"datamode": "stream",
"datatype": "utf8",
"newline": "\\n",
"topic": "",
"trim": false,
"base64": false,
"tls": "",
"x": 240,
"y": 140,
"wires": [
[
"a8ca6d2c.2926c",
"c3baaed4.79a65"
]
]
},
{
"id": "c4fce4d0.df1838",
"type": "tcp out",
"z": "f4a4d8eab7935bc8",
"name": "tcp out: 发送信息",
"host": "",
"port": "",
"beserver": "reply",
"base64": false,
"end": false,
"x": 1170,
"y": 140,
"wires": []
},
{
"id": "a8ca6d2c.2926c",
"type": "debug",
"z": "f4a4d8eab7935bc8",
"name": "tcp server",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "payload",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 460,
"y": 320,
"wires": []
},
{
"id": "c3baaed4.79a65",
"type": "switch",
"z": "f4a4d8eab7935bc8",
"name": "",
"property": "payload",
"propertyType": "msg",
"rules": [
{
"t": "eq",
"v": "temp",
"vt": "str"
},
{
"t": "eq",
"v": "humi",
"vt": "str"
}
],
"checkall": "true",
"repair": false,
"outputs": 2,
"x": 450,
"y": 140,
"wires": [
[
"9986631d.c94df"
],
[
"862b30b1.af802"
]
]
},
{
"id": "9986631d.c94df",
"type": "change",
"z": "f4a4d8eab7935bc8",
"name": "输出: 20",
"rules": [
{
"t": "set",
"p": "payload",
"pt": "msg",
"to": "20",
"tot": "num"
}
],
"action": "",
"property": "",
"from": "",
"to": "",
"reg": false,
"x": 620,
"y": 120,
"wires": [
[
"df1d0ca7.57683"
]
]
},
{
"id": "f1c7c3d.6a92c4",
"type": "template",
"z": "f4a4d8eab7935bc8",
"name": "+ 換行",
"field": "payload",
"fieldType": "msg",
"format": "handlebars",
"syntax": "mustache",
"template": "{{payload}}\n",
"output": "str",
"x": 630,
"y": 540,
"wires": [
[
"27457a99.3109b6"
]
]
},
{
"id": "2ddba953.d7ae06",
"type": "inject",
"z": "f4a4d8eab7935bc8",
"name": "",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "",
"payload": "humi",
"payloadType": "str",
"x": 450,
"y": 520,
"wires": [
[
"f1c7c3d.6a92c4"
]
]
},
{
"id": "862b30b1.af802",
"type": "change",
"z": "f4a4d8eab7935bc8",
"name": "输出: 70",
"rules": [
{
"t": "set",
"p": "payload",
"pt": "msg",
"to": "70",
"tot": "num"
}
],
"action": "",
"property": "",
"from": "",
"to": "",
"reg": false,
"x": 620,
"y": 160,
"wires": [
[
"df1d0ca7.57683"
]
]
},
{
"id": "df1d0ca7.57683",
"type": "template",
"z": "f4a4d8eab7935bc8",
"name": "+换行",
"field": "payload",
"fieldType": "msg",
"format": "handlebars",
"syntax": "mustache",
"template": "{{payload}}\n",
"output": "str",
"x": 810,
"y": 140,
"wires": [
[
"dd4e77a442e92660"
]
]
},
{
"id": "12ecae70c3de5088",
"type": "inject",
"z": "f4a4d8eab7935bc8",
"name": "",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "",
"payload": "Hello from server.",
"payloadType": "str",
"x": 600,
"y": 60,
"wires": [
[
"df1d0ca7.57683"
]
]
},
{
"id": "8471c767c39096a9",
"type": "function",
"z": "f4a4d8eab7935bc8",
"name": "函数",
"func": "var payload = msg.payload.toString();\n\nmsg.payload = {\"tcp\": payload}\n\nreturn msg;",
"outputs": 1,
"timeout": 0,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 450,
"y": 240,
"wires": [
[
"4109f61a87e0b709"
]
]
},
{
"id": "4109f61a87e0b709",
"type": "mqtt out",
"z": "f4a4d8eab7935bc8",
"name": "上传遥测",
"topic": "v1/devices/telemetry",
"qos": "1",
"retain": "false",
"respTopic": "",
"contentType": "",
"userProps": "",
"correl": "",
"expiry": "",
"broker": "8b11a1df6239c293",
"x": 620,
"y": 240,
"wires": []
},
{
"id": "e5be6324645693c4",
"type": "mqtt in",
"z": "f4a4d8eab7935bc8",
"name": "订阅MQTT消息",
"topic": "v1/devices/temp",
"qos": "1",
"datatype": "auto-detect",
"broker": "8b11a1df6239c293",
"nl": false,
"rap": true,
"rh": 0,
"inputs": 0,
"x": 420,
"y": 460,
"wires": [
[]
]
},
{
"id": "dd4e77a442e92660",
"type": "delay",
"z": "f4a4d8eab7935bc8",
"name": "",
"pauseType": "delay",
"timeout": "2",
"timeoutUnits": "seconds",
"rate": "1",
"nbRateUnits": "1",
"rateUnits": "second",
"randomFirst": "1",
"randomLast": "5",
"randomUnits": "seconds",
"drop": false,
"allowrate": false,
"outputs": 1,
"x": 980,
"y": 140,
"wires": [
[
"c4fce4d0.df1838"
]
]
},
{
"id": "884f79cc.ff01d8",
"type": "function",
"z": "f4a4d8eab7935bc8",
"name": "no msg back",
"func": "",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 650,
"y": 680,
"wires": [
[]
]
},
{
"id": "8b11a1df6239c293",
"type": "mqtt-broker",
"name": "",
"broker": "127.0.0.1",
"port": "61613",
"clientid": "",
"autoConnect": true,
"usetls": false,
"protocolVersion": "4",
"keepalive": "60",
"cleansession": true,
"autoUnsubscribe": true,
"birthTopic": "",
"birthQos": "0",
"birthRetain": "false",
"birthPayload": "",
"birthMsg": {},
"closeTopic": "",
"closeQos": "0",
"closeRetain": "false",
"closePayload": "",
"closeMsg": {},
"willTopic": "",
"willQos": "0",
"willRetain": "false",
"willPayload": "",
"willMsg": {},
"userProps": "",
"sessionExpiry": ""
}
]
MQTT-Modbus示列
[
{
"id": "d9506c2bbcecf909",
"type": "tab",
"label": "MQTT-Modbus示列",
"disabled": false,
"info": "",
"env": []
},
{
"id": "f4ec80708ef35fc6",
"type": "modbus-getter",
"z": "d9506c2bbcecf909",
"name": "水位",
"showStatusActivities": true,
"showErrors": false,
"showWarnings": true,
"logIOActivities": false,
"unitid": "1",
"dataType": "HoldingRegister",
"adr": "1",
"quantity": "3",
"server": "ce08db4b7d9f20f0",
"useIOFile": false,
"ioFile": "",
"useIOForPayload": false,
"emptyMsgOnFail": false,
"keepMsgProperties": false,
"delayOnStart": false,
"startDelayTime": "",
"x": 390,
"y": 360,
"wires": [
[
"15f2878dff93f895"
],
[]
]
},
{
"id": "11b03710e3fbaeb1",
"type": "modbus-getter",
"z": "d9506c2bbcecf909",
"name": "水温",
"showStatusActivities": true,
"showErrors": false,
"showWarnings": true,
"logIOActivities": false,
"unitid": "1",
"dataType": "HoldingRegister",
"adr": "2",
"quantity": "3",
"server": "ce08db4b7d9f20f0",
"useIOFile": false,
"ioFile": "",
"useIOForPayload": false,
"emptyMsgOnFail": false,
"keepMsgProperties": false,
"delayOnStart": false,
"startDelayTime": "",
"x": 390,
"y": 460,
"wires": [
[
"53525a6164965ba8"
],
[]
]
},
{
"id": "e8db4c544769e572",
"type": "inject",
"z": "d9506c2bbcecf909",
"name": "",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": "10",
"topic": "",
"payload": "",
"payloadType": "str",
"x": 190,
"y": 380,
"wires": [
[
"f4ec80708ef35fc6",
"3ce7d5365f53c405"
]
]
},
{
"id": "821ad40fe1d1982a",
"type": "debug",
"z": "d9506c2bbcecf909",
"name": "输出水箱参数",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "payload",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 480,
"y": 620,
"wires": []
},
{
"id": "3ce7d5365f53c405",
"type": "delay",
"z": "d9506c2bbcecf909",
"name": "",
"pauseType": "delay",
"timeout": "10",
"timeoutUnits": "milliseconds",
"rate": "1",
"nbRateUnits": "1",
"rateUnits": "second",
"randomFirst": "1",
"randomLast": "5",
"randomUnits": "seconds",
"drop": false,
"allowrate": false,
"outputs": 1,
"x": 250,
"y": 440,
"wires": [
[
"11b03710e3fbaeb1"
]
]
},
{
"id": "15f2878dff93f895",
"type": "function",
"z": "d9506c2bbcecf909",
"name": "水位",
"func": "msg={topic:\"WaterLevel\",payload:msg.payload[0]}\nreturn msg;",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 530,
"y": 360,
"wires": [
[
"ea5ef161c502483a"
]
]
},
{
"id": "53525a6164965ba8",
"type": "function",
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Node-RED 综合示列示列
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