How to use Golang to implement the Tenpay interface of web applications

Tenpay is a popular payment method. It is an online payment platform owned by Tencent. It is widely used in online shopping malls, electronic payments, online entertainment and other fields. It is currently the largest third party in China. One of the payment platforms. In this article, we will introduce how to use Golang to implement the Tenpay interface of web applications.

1. Create a merchant account

Before using the Tenpay interface, you need to create a merchant account. You can register and apply through the Tenpay website. After the application is successful, the merchant ID and security key will be given to you. This information must be kept properly, especially the security key. If it is leaked, it can easily lead to financial losses.

2. Determine the interface document

The next thing to do is to determine the interface document. Tenpay provides detailed interface documents. The implemented APIs include payment requests and order inquiries. , refund requests, refund inquiries, etc. We need to choose the corresponding interface to implement according to our own business needs.

3. Introducing SDK

In Golang, we can implement the Tenpay interface by introducing SDK. Here you can choose to use the officially provided API or third-party libraries, such as go-tenpay, etc. These libraries have completed most of the encapsulation for our convenience.

4. Implementing the interface call

Then you can start to implement the interface call. Before writing the implementation code, we need to clearly understand the request parameters and return parameters of the interface. Calling method and other information. Below, we take the payment interface as an example to show the specific implementation method.

• First, you need to introduce the SDK, here use the go-tenpay library.

import (
    "github.com/chanxuehong/go-tenpay/tenpay"
)

• Then, create a new Tenpay API client and pass in the merchant ID, merchant key and other parameters

client := tenpay.NewClient(MchID, ApiKey, "", "", "", true)

• Continue , create a new payment request structure, and assign values ​​to the necessary items in the request structure.

req := &tenpay.UnifiedOrderRequest{
    AppId:          appId,
    MchId:          mchId,
    NotifyURL:      notifyUrl,
    OutTradeNo:     outTradeNo,
    TotalFee:       totalFee,
    Body:           body,
    SpbillCreateIP: spbillCreateIp,
    TradeType:      tradeType,
}

• Finally, call the UnifiedOrder method of Tenpay API to obtain the result of the payment request.

resp, err := client.UnifiedOrder(req, signType)
if err != nil {
    // 异常处理
}
// 处理响应结果

Summary

Through the above steps, we can use Golang to implement the Tenpay interface of the web application. During the entire implementation process, attention needs to be paid to strengthening security measures to ensure that information such as merchant IDs and security keys will not be leaked to avoid financial losses. At the same time, for each specific interface, you also need to carefully understand information such as parameters and return parameters, make appropriate modifications according to needs, and handle reasonable exceptions.

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