Node Red 与axios简易测试环境的搭建

为了学习在vue3中如何使用axios，我借Sider Fusion的帮助搭建了基于node的简易测试环境。

Axios 是一个基于 Promise 的 HTTP 客户端，通常用于浏览器环境，但它也可以在 Node.js 环境中使用。因此，可以在 Ubuntu 的 Bash 环境下通过 Node.js 使用 Axios。

步骤:

安装 Node.js 和 npm :

如果您尚未安装 Node.js，请通过以下命令安装（通常会包括 npm）：

sudo apt update  
sudo apt install nodejs npm

您可以检查安装是否成功：

node -v 
npm -v 

创建项目:创建一个新的目录并进入：

mkdir my-axios-app 
cd my-axios-app 

初始化 npm:
3.

初始化一个新的 npm 项目：

npm init -y 

安装 Axios:
4.

使用 npm 安装 Axios：

npm install axios 

编写 Axios 脚本:
5.

创建一个新的 JavaScript 文件，如 app.js：

nano app.js 

打开 app.js，然后添加以下代码：

const axios = require('axios');  

axios.get('http://www.xxxxx.cn:1880/api/data')  
    .then(response => {  
        console.log('Response from Node-RED:', response.data);  
    })  
    .catch(error => {  
        console.error('Error:', error);  
    });

运行脚本:
6.

使用 Node.js 运行脚本：

node app.js 

NodeRed节点

[
    {
        "id": "6f67ed6250fc6293",
        "type": "tab",
        "label": "流程 4",
        "disabled": false,
        "info": "",
        "env": []
    },
    {
        "id": "cbeb42c4ff466487",
        "type": "debug",
        "z": "6f67ed6250fc6293",
        "name": "debug 20",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "false",
        "statusVal": "",
        "statusType": "auto",
        "x": 600,
        "y": 200,
        "wires": []
    },
    {
        "id": "71b003bcbda86c27",
        "type": "function",
        "z": "6f67ed6250fc6293",
        "name": "function 10",
        "func": "msg.payload = { message: \"Hello from Node-RED!你好\" };\nreturn msg;",
        "outputs": 1,
        "timeout": 0,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 430,
        "y": 200,
        "wires": [
            [
                "cbeb42c4ff466487",
                "a7ce06a8882a6108"
            ]
        ]
    },
    {
        "id": "06cfce3558445895",
        "type": "http in",
        "z": "6f67ed6250fc6293",
        "name": "",
        "url": "/api/data",
        "method": "get",
        "upload": false,
        "swaggerDoc": "",
        "x": 250,
        "y": 200,
        "wires": [
            [
                "71b003bcbda86c27"
            ]
        ]
    },
    {
        "id": "a7ce06a8882a6108",
        "type": "http response",
        "z": "6f67ed6250fc6293",
        "name": "",
        "statusCode": "",
        "headers": {},
        "x": 610,
        "y": 260,
        "wires": []
    }
]

实际代码测试及结果，url请换成自己的域名

nodered返回的结果

使用POSTMAN测试及结果

Google Chrome测试及结果

AXIOS 向Nodered post数据

const axios = require('axios');  

const postDataToNodeRed = async () => {  
  try {  
    const response = await axios.post('http://www.xxxxx.com:1880/api/data', {  
      key1: 'value1',  
      key2: '你好',  
      // 其他数据  
    });  

    console.log('Response from Node-RED:', response.data);  
  } catch (error) {  
    console.error('Error while sending data to Node-RED:', error);  
  }  
};  

postDataToNodeRed(); 

NodeRed节点

msg.payload = {
    receivedData: msg.payload,
    message: "Data received successfully"
};
return msg;

[
    {
        "id": "5e7fbd551b9ac7da",
        "type": "tab",
        "label": "流程 5",
        "disabled": false,
        "info": "",
        "env": []
    },
    {
        "id": "1917a20da9f650f4",
        "type": "http in",
        "z": "5e7fbd551b9ac7da",
        "name": "",
        "url": "/api/data",
        "method": "post",
        "upload": false,
        "swaggerDoc": "",
        "x": 260,
        "y": 220,
        "wires": [
            [
                "844bf33a8bc338b0"
            ]
        ]
    },
    {
        "id": "e428c6755d5a0a36",
        "type": "debug",
        "z": "5e7fbd551b9ac7da",
        "name": "debug 22",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "false",
        "statusVal": "",
        "statusType": "auto",
        "x": 640,
        "y": 220,
        "wires": []
    },
    {
        "id": "02abf8b96935f1f4",
        "type": "http response",
        "z": "5e7fbd551b9ac7da",
        "name": "",
        "statusCode": "",
        "headers": {},
        "x": 670,
        "y": 300,
        "wires": []
    },
    {
        "id": "844bf33a8bc338b0",
        "type": "function",
        "z": "5e7fbd551b9ac7da",
        "name": "function 12",
        "func": "msg.payload = {\n    receivedData: msg.payload,\n    message: \"Data received successfully\"\n};\nreturn msg;",
        "outputs": 1,
        "timeout": 0,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 450,
        "y": 220,
        "wires": [
            [
                "e428c6755d5a0a36",
                "02abf8b96935f1f4"
            ]
        ]
    }
]

node发送POST数据，并接收到Nodered返回的数据

NodeRed收到的数据