如何序列化/反序列化go中的地图 [英] how to serialize/deserialize a map in go

问题描述

我的直觉告诉我，它不得不被转换成一个字符串或字节[]（这可能与Go相同），然后保存到磁盘。

My instinct tells me that somehow it would have to be converted to a string or byte[] (which might even be the same things in Go?) and then saved to disk.

我发现这个软件包（ http://golang.org/pkg /编码/ gob / ），但它看起来像它只是结构？

I found this package (http://golang.org/pkg/encoding/gob/), but it seems like its just for structs?

推荐答案

序列化数据，Go为此提供了许多软件包。一些常见编码方式的包：

There are multiple ways of serializing data, and Go offers many packages for this. Packages for some of the common ways of encoding:

编码/ gob


encoding / xml

编码/ json

encoding / gob 句柄贴图很好。下面的例子显示了map的编码/解码：

encoding/gob handles maps fine. The example below shows both encoding/decoding of a map:

    package main

import (
    "fmt"
    "encoding/gob"
    "bytes"
)

var m = map[string]int{"one":1, "two":2, "three":3}

func main() {
    b := new(bytes.Buffer)

    e := gob.NewEncoder(b)

    // Encoding the map
    err := e.Encode(m)
    if err != nil {
        panic(err)
    }

    var decodedMap map[string]int
    d := gob.NewDecoder(b)

    // Decoding the serialized data
    err = d.Decode(&decodedMap)
    if err != nil {
        panic(err)
    }

    // Ta da! It is a map!
    fmt.Printf("%#v\n", decodedMap)
}

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