Node-RED中实现HTML表单提交和获取提交的内容

秒速五厘米 2023-09-30 13:08 27阅读 0赞

## 场景 ##

Node-RED中建立静态网页和动态网页内容：

[Node-RED中建立静态网页和动态网页内容\_霸道流氓气质的博客-CSDN博客][Node-RED_-CSDN]

在上面的基础上，怎样实现用户输入并提交表单，然后解析获取表单提交的内容

![d31f6c9b43ee971fe04cb07c8bd932af.gif][]

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][CSDN_-C_SpringBoot]  
关注公众号  
霸道的程序猿  
获取编程相关电子书、教程推送与免费下载。

## 实现 ##

1、第一个流程回应一个HTML表单网页，路由/form，方法是get

![cd66f77d2404fa7fef512f97c2ba9187.png][]

2、template节点，建立表单form标签，method属性是POST

action是表单处理的/name路由

![f11a117a986b380818a2db7c0f5b5587.png][]

3、第二个流程是表单处理，因为是接收表单，所以/name的方法是post

template节点，因为上面提交时imput标签的name是user,所以表单处理使用

msg.payload.user获取

![6c6ae89e77c84006abc1c049e4534ce0.png][]

<html>
        <head>
            <title>Form Handle</title>
        </head>
        <body>
            <h1>输入姓名: {
       {payload.user}} </h1>
        </body>
    </html>

4、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": "3e898387.1abbec",
            "type": "http in",
            "z": "f4a4d8eab7935bc8",
            "name": "",
            "url": "/name",
            "method": "post",
            "upload": false,
            "swaggerDoc": "",
            "x": 270,
            "y": 300,
            "wires": [
                [
                    "9595631d.c6261"
                ]
            ]
        },
        {
            "id": "25b130b6.60b02",
            "type": "http response",
            "z": "f4a4d8eab7935bc8",
            "name": "",
            "statusCode": "",
            "headers": {},
            "x": 590,
            "y": 300,
            "wires": []
        },
        {
            "id": "9595631d.c6261",
            "type": "template",
            "z": "f4a4d8eab7935bc8",
            "name": "HTML网页",
            "field": "payload",
            "fieldType": "msg",
            "format": "handlebars",
            "syntax": "mustache",
            "template": "<html>\n    <head>\n        <title>Form Handle</title>\n    </head>\n    <body>\n        <h1>输入姓名: {
       {payload.user}} </h1>\n    </body>\n</html>\n",
            "output": "str",
            "x": 430,
            "y": 300,
            "wires": [
                [
                    "25b130b6.60b02"
                ]
            ]
        },
        {
            "id": "ebf6d171.b92a2",
            "type": "template",
            "z": "f4a4d8eab7935bc8",
            "name": "HTML表单",
            "field": "payload",
            "fieldType": "msg",
            "format": "handlebars",
            "syntax": "mustache",
            "template": "<html>\n    <head>\n        <title>HTML Form</title>\n    </head>\n    <body>\n       <form action=\"/name\" method=\"POST\">\n         姓名:\n         <input type=\"text\" name=\"user\"><br/><br/>\n         <input type=\"submit\" value=\"送出\">\n       </form> \n    </body>\n</html>\n\n",
            "output": "str",
            "x": 430,
            "y": 120,
            "wires": [
                [
                    "41fbbc2d.654f24"
                ]
            ]
        },
        {
            "id": "bc5ee3d8.079d7",
            "type": "http in",
            "z": "f4a4d8eab7935bc8",
            "name": "",
            "url": "/form",
            "method": "get",
            "upload": false,
            "swaggerDoc": "",
            "x": 260,
            "y": 120,
            "wires": [
                [
                    "ebf6d171.b92a2"
                ]
            ]
        },
        {
            "id": "41fbbc2d.654f24",
            "type": "http response",
            "z": "f4a4d8eab7935bc8",
            "name": "",
            "statusCode": "",
            "headers": {},
            "x": 590,
            "y": 120,
            "wires": []
        }
    ]

[Node-RED_-CSDN]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/124211653
[d31f6c9b43ee971fe04cb07c8bd932af.gif]: https://img-blog.csdnimg.cn/img_convert/d31f6c9b43ee971fe04cb07c8bd932af.gif
[CSDN_-C_SpringBoot]: https://blog.csdn.net/badao_liumang_qizhi
[cd66f77d2404fa7fef512f97c2ba9187.png]: https://img-blog.csdnimg.cn/img_convert/cd66f77d2404fa7fef512f97c2ba9187.png
[f11a117a986b380818a2db7c0f5b5587.png]: https://img-blog.csdnimg.cn/img_convert/f11a117a986b380818a2db7c0f5b5587.png
[6c6ae89e77c84006abc1c049e4534ce0.png]: https://img-blog.csdnimg.cn/img_convert/6c6ae89e77c84006abc1c049e4534ce0.png