Write Baidu translation API in go language to implement Chinese and French translation function

Write Baidu Translation API in Go language to implement Chinese and French translation functions

Baidu Translation API is a tool widely used in translation of various languages. It provides a simple and easy-to-use interface to facilitate developers in Integrate translation function into your own application. This article will take the Go language as an example to introduce how to achieve Chinese-French translation through Baidu Translation API.

First, we need to register an account in Baidu Developer Center and create a translation application. After registration is completed, you can obtain an App ID and a key, which will be used for subsequent API calls.

Before we start writing code, we need to use the http package of go language to make network requests. The package can be installed by executing the following command in the terminal:

go get -u github.com/go-resty/resty

After the installation is completed, we can write the following code to implement the translation function:

package main

import (
    "fmt"
    "github.com/go-resty/resty/v2" // 引入http请求包
    "log"
)

func main() {
    appID := "your_app_id" // 替换为你的App ID
    key := "your_key" // 替换为你的密钥
    url := "https://fanyi-api.baidu.com/api/trans/vip/translate"

    // 获取用户输入的要翻译的文本
    var text string
    fmt.Print("请输入要翻译的文本：")
    fmt.Scan(&text)

    // 构建参数
    params := map[string]string{
        "q":     text,
        "from":  "zh",
        "to":    "fra",
        "appid": appID,
        "salt":  "123456",
        "sign":  "", // 签名将在后面计算
    }

    // 计算签名
    sign := Sign(text, params["appid"], params["salt"], key)
    params["sign"] = sign

    // 发送请求
    client := resty.New()
    resp, err := client.R().
        SetQueryParams(params).
        Get(url)
    if err != nil {
        log.Fatal(err)
    }

    // 处理响应
    fmt.Println(resp.String())

    // 解析响应结果
    // 可以根据需要进行结果处理和展示
}

// 计算签名函数
func Sign(query, appID, salt, key string) string {
    signStr := appID + query + salt + key
    sign := Md5(signStr)
    return sign
}

// 计算MD5哈希值函数
func Md5(str string) string {
    // 实现略，可以使用go语言自带的crypto/md5包
}

In the code, we first define the necessary Variables, including App ID, key, interface address, etc. Then, get the text input by the user to be translated through the fmt.Scan() function.

Next, we build the parameter map and call the Sign() function to calculate the signature. The signature is calculated by concatenating the App ID, the text to be translated, the random salt and the key in a certain order, and then calculating the MD5 hash value as the signature.

Finally, we use the http package to send a GET request and print the returned response on the console.

It should be noted that the implementation methods of signature calculation and MD5 hash value calculation in the above example code are not given. You can use the crypto/md5 package that comes with the go language to implement these two functions.

Before running the code, make sure you have replaced the App ID and key in the sample code and have installed the http request package.

Through the above code example, we can realize the function of calling Baidu translation API through go language to achieve Chinese and French translation. According to actual needs, the code can be further improved, such as parsing the translation results into structures and implementing more complex translation logic.

I hope this article will be helpful to you in learning and using go language to call Baidu Translation API!

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