向服务器发送POST请求

// 创建一个POST请求
fetch('https://example.com/api/data', {
    method: 'POST',
    headers: {
        'Content-Type': 'application/json'
    },
    body: JSON.stringify({
        key1: 'value1',
        key2: 'value2'
    })
})
.then(response => response.json())
.then(data => console.log('Success:', data))
.catch((error) => console.error('Error:', error));

const express = require('express');
const app = express();

app.use((req, res, next) => {
    res.header('Access-Control-Allow-Origin', '*');
    res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept');
    next();
});

app.post('/api/data', (req, res) => {
    res.json({ message: 'Data received' });
});

app.listen(3000, () => {
    console.log('Server running on port 3000');
});

fetch('https://example.com/api/data', {
    method: 'POST',
    headers: {
        'Content-Type': 'application/json'
    },
    body: JSON.stringify({ key: 'value' }) // 确保这里有实际的数据
})
.then(response => response.json())
.then(data => console.log('Success:', data))
.catch((error) => console.error('Error:', error));