如何将数据从控制器传递到后台服务

// 假设这是一个前端控制器，负责接收用户输入并发送请求到后台服务
async function submitData(formData) {
    try {
        const response = await fetch('/api/submit', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify(formData)
        });
        const result = await response.json();
        console.log('Data submitted successfully:', result);
    } catch (error) {
        console.error('Error submitting data:', error);
    }
}

// 假设这是一个后台服务，使用Express框架处理请求
const express = require('express');
const app = express();
app.use(express.json());

app.post('/api/submit', (req, res) => {
    const formData = req.body;
    // 处理数据逻辑
    console.log('Received data:', formData);
    // 假设处理成功，返回成功信息
    res.json({ success: true, message: 'Data received and processed successfully' });
});

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