Base64 encoding and decoding using the functions provided by the encoding/base64 package

Use the functions provided by the encoding/base64 package for Base64 encoding and decoding

Base64 is an encoding method that converts arbitrary binary data into printable characters. It is often used to transmit binary data in network transmission or to Binary data is stored as readable text.

In the Go language, we can use the functions provided by the encoding/base64 package to perform Base64 encoding and decoding operations. Below we will use code examples to show how to use this package for encoding and decoding.

First, we need to import the encoding/base64 package.

package main

import (
    "encoding/base64"
    "fmt"
)

Next, we will Base64 encode the string.

func main() {
    // 原始字符串
    str := "Hello, World!"

    // 进行Base64编码
    encoded := base64.StdEncoding.EncodeToString([]byte(str))

    fmt.Println("Base64编码结果:", encoded)
}

In the above example, we used the EncodeToString function provided by base64.StdEncoding to Base64 encode the string. The encoding result is stored in the encoded variable.

The output result is: Base64 encoding result: SGVsbG8sIFdvcmxkIQ==

Next, we will decode in the form of Base64 encoded string.

func main() {
    // Base64编码字符串
    encoded := "SGVsbG8sIFdvcmxkIQ=="

    // 进行Base64解码
    decoded, err := base64.StdEncoding.DecodeString(encoded)
    if err != nil {
        fmt.Println("解码失败:", err)
        return
    }

    fmt.Println("Base64解码结果:", string(decoded))
}

In the above example, we used the DecodeString function provided by base64.StdEncoding to decode the Base64 encoded string. The decoded results are stored in the decoded variable.

The output result is: Base64 decoding result: Hello, World!

In addition to using the functions in base64.StdEncoding for Base64 encoding and decoding , you can also use other encoding methods such as base64.URLEncoding and base64.RawStdEncoding. These encoding methods differ when dealing with special characters and can be selected according to specific needs.

Base64 encoding and decoding are widely used in network communications, especially when processing binary data such as images and audio. Using the functions provided by the encoding/base64 package built into the Go language can conveniently perform Base64 encoding and decoding operations, simplifying the code implementation process.

Summary: This article introduces how to use the functions provided by the encoding/base64 package to perform Base64 encoding and decoding operations, and demonstrates the specific usage through examples. Using Base64 makes it easy to transmit binary data over network transmissions or store binary data as readable text.

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