Expressjs Post-request 未得到认可 | 404-错误

Question

我想在我的网站上实施贝宝，但我被困住了。总是当我尝试进行发布请求（也尝试使用邮递员）时，我没有得到只是正常的 404 错误页面的答案。控制台没有显示错误，所以我猜 post 请求没有被识别。

可能是什么问题，我该如何解决？

server.js

//payment
app.post("/pay", (req, res) => {
    // payment data
    const create_payment_json = {
        "intent": "sale",
        "payer": {
            "payment_method": "paypal"
        },
        "redirect_urls": {
            "return_url": "http://localhost:3000/success",
            "cancel_url": "http://localhost:3000/cancel"
        },
        "transactions": [{
            "item_list": {
                "items": [{
                    "name": "product1",
                    "sku": "001",
                    "price": "350.00",
                    "currency": "USD",
                    "quantity": 1
                }]
            },
            "amount": {
                "currency": "USD",
                "total": "350.00"
            },
            "description": "test"
        }]
    };
    
    // create payment
    paypal.payment.create(create_payment_json, (error, payment) => {
        if(error) {
            console.log("payment not successful");
            console.log(error)
        } else {
            console.log("payment successful");
            console.log(payment);
        }
    })
    
})

products.ejs

<form action="/pay" method="post">
    <input type="submit" value="add to cart" onclick="window.location.href='/pay'"/>
</form>

Answer 1

您需要确保的几件事

1. 确保您将发布请求发送到正确的端口，以防您的快速服务器也没有托管实际站点。如果是，那么不要担心端口
2. 可以使用js发送请求，防止页面刷新。

    const form = document.querySelector('form')
    form.addEventListener('submit', async function(e) {
      e.preventDefault()
      const port = 3000 //make sure this is the port your express erver is listening on
      const formData = new FormData(e.target)
      const itemId = formData.get('itemId')// You can store the items id in the name attribute of an input
      const response = await fetch(`http://localhost:${port}/pay`, {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json'
        },
        body: JSON.stringify({itemId})
      })
    })
    const data = await response.json()

    console.log(data)  // The response you would get from the server