我是一个新手，但这是我目前为止收集到的:

package srf

import (
    "bytes"
    "encoding/json"
    "os"
)

func WriteDataToFileAsJSON(data interface{}, filedir string) (int, error) {
    //write data as buffer to json encoder
    buffer := new(bytes.Buffer)
    encoder := json.NewEncoder(buffer)
    encoder.SetIndent("", "\t")

    err := encoder.Encode(data)
    if err != nil {
        return 0, err
    }
    file, err := os.OpenFile(filedir, os.O_RDWR|os.O_CREATE, 0755)
    if err != nil {
        return 0, err
    }
    n, err := file.Write(buffer.Bytes())
    if err != nil {
        return 0, err
    }
    return n, nil
}

这是函数的执行，而且是标准的

b, _ := json.MarshalIndent(SomeType, "", "\t")

代码:

package main

import (
    "encoding/json"
    "fmt"
    "io/ioutil"
    "log"

    minerals "./minerals"
    srf "./srf"
)

func main() {

    //array of Test struct
    var SomeType [10]minerals.Test

    //Create 10 units of some random data to write
    for a := 0; a < 10; a++ {
        SomeType[a] = minerals.Test{
            Name:   "Rand",
            Id:     123,
            A:      "desc",
            Num:    999,
            Link:   "somelink",
            People: []string{"John Doe", "Aby Daby"},
        }
    }

    //writes aditional data to existing file, or creates a new file
    n, err := srf.WriteDataToFileAsJSON(SomeType, "test2.json")
    if err != nil {
        log.Fatal(err)
    }
    fmt.Println("srf printed ", n, " bytes to ", "test2.json")

    //overrides previous file
    b, _ := json.MarshalIndent(SomeType, "", "\t")
    ioutil.WriteFile("test.json", b, 0644)

}

使用json。带字符串的MarshalIndent

这个easyPrint函数接受参数数据(任何类型的数据)，并将其打印成预期的(漂亮的)JSON格式。

import (
  "encoding/json"
  "log"
)

func easyPrint(data interface{}) {
  manifestJson, _ := json.MarshalIndent(data, "", "  ")

  log.Println(string(manifestJson))
}

使用name参数。

TODO:使参数名可选。

func easyPrint(data interface{}, name string) {
  manifestJson, _ := json.MarshalIndent(data, "", "  ")

  log.Println(name + " ->", string(manifestJson))
}

我是一个新手，但这是我目前为止收集到的:

package srf

import (
    "bytes"
    "encoding/json"
    "os"
)

func WriteDataToFileAsJSON(data interface{}, filedir string) (int, error) {
    //write data as buffer to json encoder
    buffer := new(bytes.Buffer)
    encoder := json.NewEncoder(buffer)
    encoder.SetIndent("", "\t")

    err := encoder.Encode(data)
    if err != nil {
        return 0, err
    }
    file, err := os.OpenFile(filedir, os.O_RDWR|os.O_CREATE, 0755)
    if err != nil {
        return 0, err
    }
    n, err := file.Write(buffer.Bytes())
    if err != nil {
        return 0, err
    }
    return n, nil
}

这是函数的执行，而且是标准的

b, _ := json.MarshalIndent(SomeType, "", "\t")

代码:

package main

import (
    "encoding/json"
    "fmt"
    "io/ioutil"
    "log"

    minerals "./minerals"
    srf "./srf"
)

func main() {

    //array of Test struct
    var SomeType [10]minerals.Test

    //Create 10 units of some random data to write
    for a := 0; a < 10; a++ {
        SomeType[a] = minerals.Test{
            Name:   "Rand",
            Id:     123,
            A:      "desc",
            Num:    999,
            Link:   "somelink",
            People: []string{"John Doe", "Aby Daby"},
        }
    }

    //writes aditional data to existing file, or creates a new file
    n, err := srf.WriteDataToFileAsJSON(SomeType, "test2.json")
    if err != nil {
        log.Fatal(err)
    }
    fmt.Println("srf printed ", n, " bytes to ", "test2.json")

    //overrides previous file
    b, _ := json.MarshalIndent(SomeType, "", "\t")
    ioutil.WriteFile("test.json", b, 0644)

}

如果你想创建一个命令行工具来漂亮地打印JSON

package main

import ("fmt"
  "encoding/json"
  "os"
  "bufio"
  "bytes"
)


func main(){

    var out bytes.Buffer

    reader := bufio.NewReader(os.Stdin)
    text, _ := reader.ReadString('\n')

    err := json.Indent(&out, []byte(text), "", "  ")
    if err != nil {
      fmt.Println(err)
    }

    fmt.Println(string(out.Bytes()))
}

echo "{\"boo\":\"moo\"}" | go run main.go 

将产生以下输出:

{
  "boo": "moo"
}

请随意构建二进制文件

go build main.go

然后把它放到/usr/local/bin中

这是我用的。如果它不能漂亮地打印JSON，它只返回原始字符串。用于打印应该包含JSON的HTTP响应。

import (
    "encoding/json"
    "bytes"
)

func jsonPrettyPrint(in string) string {
    var out bytes.Buffer
    err := json.Indent(&out, []byte(in), "", "\t")
    if err != nil {
        return in
    }
    return out.String()
}

回头看，这是非惯用的围棋。像这样的小助手函数增加了额外的复杂性。一般来说，围棋哲学倾向于包含3条简单的线，而不是1条棘手的线。

正如@robyoder提到的，json。缩进才是正确的选择。我想添加这个小的prettyprint函数:

package main

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

//dont do this, see above edit
func prettyprint(b []byte) ([]byte, error) {
    var out bytes.Buffer
    err := json.Indent(&out, b, "", "  ")
    return out.Bytes(), err
}

func main() {
    b := []byte(`{"hello": "123"}`)
    b, _ = prettyprint(b)
    fmt.Printf("%s", b)
}

https://go-sandbox.com/#/R4LWpkkHIN或http://play.golang.org/p/R4LWpkkHIN