golang字段串压缩和解压缩

golang zlib压缩解压缩

package main

import (
    "bytes"
    "compress/zlib"
    "fmt"
    "io"
    "os"
)

//进行zlib压缩
func DoZlibCompress(src []byte) []byte {
    var in bytes.Buffer
    w := zlib.NewWriter(&in)
    w.Write(src)
    w.Close()
    return in.Bytes()
}

//进行zlib解压缩
func DoZlibUnCompress(compressSrc []byte) []byte {
    b := bytes.NewReader(compressSrc)
    var out bytes.Buffer
    r, _ := zlib.NewReader(b)
    io.Copy(&out, r)
    return out.Bytes()
}

func main() {
    buff := []byte{120, 156, 202, 72, 205, 201, 201, 215, 81, 40, 207,
        47, 202, 73, 225, 2, 4, 0, 0, 255, 255, 33, 231, 4, 147}
    b := bytes.NewReader(buff)
    r, err := zlib.NewReader(b)
    if err != nil {
        panic(err)
    }
    io.Copy(os.Stdout, r)
    r.Close()

    zip := DoZlibCompress([]byte("hello, world
"))
    fmt.Println(zip)
    fmt.Println(string(DoZlibUnCompress(zip)))
}

golang gzip压缩解压缩

package main

import (
	"bytes"
	"compress/gzip"
	"encoding/base64"
	"fmt"
	"io/ioutil"
)

func main() {
	var b bytes.Buffer
	gz := gzip.NewWriter(&b)
	if _, err := gz.Write([]byte("hello")); err != nil {
		panic(err)
	}
	if err := gz.Flush(); err != nil {
		panic(err)
	}
	if err := gz.Close(); err != nil {
		panic(err)
	}
	str := base64.StdEncoding.EncodeToString(b.Bytes())
	fmt.Println("base64 encode: ",str)
	data, _ := base64.StdEncoding.DecodeString(str)
	fmt.Println("base64 decode:",data)
	rdata := bytes.NewReader(data)
	r, _ := gzip.NewReader(rdata)
	s, _ := ioutil.ReadAll(r)
	fmt.Println("源字符串:",string(s))
}

输出:

base64 encode:  H4sIAAAAAAAA/8pIzcnJBwAAAP//AQAA//+GphA2BQAAAA==
base64 decode: [31 139 8 0 0 0 0 0 0 255 202 72 205 201 201 7 0 0 0 255 255 1 0 0 255 255 134 166 16 54 5 0 0 0]
源字符串: hello

参考链接

http://xiaorui.cc/archives/3084

https://www.coder.work/article/1029548