Node-RED中建立Websocket客户端连接
场景
Node-RED简介与Windows上安装、启动和运行示例：
Node-RED简介与Windows上安装、启动和运行示例_霸道流氓气质的博客-CSDN博客_nodered windows
Node-RED怎样导出导入流程为json文件：
Node-RED怎样导出导入流程为json文件_霸道流氓气质的博客-CSDN博客_怎么导出json文件
Node-RED中建立websocket客户端是使用websocket in 和websocket out建立。
注：
博客：
霸道流氓气质的博客_CSDN博客-C#,架构之路,SpringBoot领域博主
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实现
1、拖拽inject节点，指定传送字符串
2、拖拽websocket out节点并编辑
类型为连接，URL为ws的服务端地址
3、再编辑一个websocket in节点，在类型选择连接，URL选择之前新增的url
4、搭建一个ws的服务端，与客户端进行连接测试，ws服务端可以自己网上搜搜。
5、json数据
[
{
"id": "f4a4d8eab7935bc8",
"type": "tab",
"label": "流程 3",
"disabled": false,
"info": "",
"env": []
},
{
"id": "c428312d1f6165d1",
"type": "mqtt-broker",
"name": "mqtt",
"broker": "127.0.0.1",
"port": "1883",
"clientid": "",
"autoConnect": true,
"usetls": false,
"protocolVersion": "4",
"keepalive": "60",
"cleansession": true,
"birthTopic": "",
"birthQos": "0",
"birthPayload": "",
"birthMsg": {},
"closeTopic": "",
"closeQos": "0",
"closePayload": "",
"closeMsg": {},
"willTopic": "",
"willQos": "0",
"willPayload": "",
"willMsg": {},
"sessionExpiry": ""
},
{
"id": "51eee50b4ec9422f",
"type": "ui_group",
"name": "dashboardDemo",
"tab": "29ae4c620f43ee0d",
"order": 1,
"disp": true,
"width": "6",
"collapse": false,
"className": ""
},
{
"id": "29ae4c620f43ee0d",
"type": "ui_tab",
"name": "Home",
"icon": "dashboard",
"disabled": false,
"hidden": false
},
{
"id": "a506c767a5c1edbd",
"type": "ui_base",
"theme": {
"name": "theme-light",
"lightTheme": {
"default": "#0094CE",
"baseColor": "#0094CE",
"baseFont": "-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen-Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif",
"edited": true,
"reset": false
},
"darkTheme": {
"default": "#097479",
"baseColor": "#097479",
"baseFont": "-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen-Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif",
"edited": false
},
"customTheme": {
"name": "Untitled Theme 1",
"default": "#4B7930",
"baseColor": "#4B7930",
"baseFont": "-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen-Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif"
},
"themeState": {
"base-color": {
"default": "#0094CE",
"value": "#0094CE",
"edited": false
},
"page-titlebar-backgroundColor": {
"value": "#0094CE",
"edited": false
},
"page-backgroundColor": {
"value": "#fafafa",
"edited": false
},
"page-sidebar-backgroundColor": {
"value": "#ffffff",
"edited": false
},
"group-textColor": {
"value": "#1bbfff",
"edited": false
},
"group-borderColor": {
"value": "#ffffff",
"edited": false
},
"group-backgroundColor": {
"value": "#ffffff",
"edited": false
},
"widget-textColor": {
"value": "#111111",
"edited": false
},
"widget-backgroundColor": {
"value": "#0094ce",
"edited": false
},
"widget-borderColor": {
"value": "#ffffff",
"edited": false
},
"base-font": {
"value": "-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen-Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif"
}
},
"angularTheme": {
"primary": "indigo",
"accents": "blue",
"warn": "red",
"background": "grey",
"palette": "light"
}
},
"site": {
"name": "Node-RED Dashboard",
"hideToolbar": "false",
"allowSwipe": "false",
"lockMenu": "false",
"allowTempTheme": "true",
"dateFormat": "DD/MM/YYYY",
"sizes": {
"sx": 48,
"sy": 48,
"gx": 6,
"gy": 6,
"cx": 6,
"cy": 6,
"px": 0,
"py": 0
}
}
},
{
"id": "248cbbb0.18e794",
"type": "ui_group",
"name": "MyGroup",
"tab": "3f79c420.cfc1bc",
"order": 1,
"disp": true,
"width": "6",
"collapse": false
},
{
"id": "3f79c420.cfc1bc",
"type": "ui_tab",
"name": "Home",
"icon": "dashboard",
"disabled": false,
"hidden": false
},
{
"id": "a0954be5.a7f7e8",
"type": "ui_group",
"name": "MyInput",
"tab": "3f79c420.cfc1bc",
"order": 2,
"disp": true,
"width": "6",
"collapse": false
},
{
"id": "508bd6f8398ab80f",
"type": "ui_group",
"name": "OpenWeatherMap",
"tab": "3f79c420.cfc1bc",
"order": 3,
"disp": true,
"width": "6",
"collapse": false
},
{
"id": "8824dea1.83e31",
"type": "websocket-client",
"path": "ws://localhost:9898/",
"tls": "",
"wholemsg": "false"
},
{
"id": "b40b0437.522ab8",
"type": "websocket in",
"z": "f4a4d8eab7935bc8",
"name": "",
"server": "",
"client": "8824dea1.83e31",
"x": 290,
"y": 240,
"wires": [
[
"24d481b8.2f71ae"
]
]
},
{
"id": "ad931922.6ef1b8",
"type": "websocket out",
"z": "f4a4d8eab7935bc8",
"name": "",
"server": "",
"client": "8824dea1.83e31",
"x": 520,
"y": 160,
"wires": []
},
{
"id": "c9dd9e39.c618f",
"type": "inject",
"z": "f4a4d8eab7935bc8",
"name": "",
"props": [
{
"p": "payload"
},
{
"p": "topic",
"vt": "str"
}
],
"repeat": "",
"crontab": "",
"once": false,
"onceDelay": 0.1,
"topic": "",
"payload": "Hello There",
"payloadType": "str",
"x": 280,
"y": 160,
"wires": [
[
"ad931922.6ef1b8"
]
]
},
{
"id": "24d481b8.2f71ae",
"type": "debug",
"z": "f4a4d8eab7935bc8",
"name": "",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "payload",
"targetType": "msg",
"statusVal": "",
"statusType": "auto",
"x": 610,
"y": 240,
"wires": []
}
]