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:
初始化一个新的 npm 项目：
```
npm init -y 
```
安装 Axios:
使用 npm 安装 Axios：
```
npm install axios 
```
编写 Axios 脚本:

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:

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"]]}
]