Golang如何使用compress/gzip实现文件压缩

package main

import (
    "bufio"
    "compress/gzip"
    "io"
    "os"
)

func compressFile(src, dst string) error {
    // 打开源文件
    inputFile, err := os.Open(src)
    if err != nil {
        return err
    }
    defer inputFile.Close()

    // 创建目标 .gz 文件
    outputFile, err := os.Create(dst)
    if err != nil {
        return err
    }
    defer outputFile.Close()

    // 使用 bufio 提升I/O性能
    writer := bufio.NewWriter(outputFile)
    defer writer.Flush()

    // 构建gzip写入器
    gzWriter := gzip.NewWriter(writer)
    defer gzWriter.Close()

    // 将源文件内容拷贝到gzip写入器
    _, err = io.Copy(gzWriter, inputFile)
    return err
}

func main() {
    err := compressFile("example.txt", "example.txt.gz")
    if err != nil {
        panic(err)
    }
    <strong>println("文件压缩完成")</strong>
}

gzWriter, err := gzip.NewWriterLevel(writer, gzip.BestCompression)
if err != nil {
    return err
}