定义此嵌套映射时如何避免重复

Question

在我的一个json架构中，我有一个这样的地图var deviceSchemaJson = map[string]interface{}{    "additionalProperties": false,    "properties": map[string]interface{}{        "application": map[string]string{            "type": "string",        },        "hostname": map[string]string{            "type": "string",        },        "ipaddress": map[string]interface{}{            "oneOf": []map[string]string{{"format": "ipv4"},{"format": "ipv6"}},            "type": "string",        },        "kernel_version": map[string]string{            "type": "string",        },    },    "type": "object",}如何避免每次都定义？map[string]string

Answer 1

试试这个，如果那适合你更好

package main

import (

    "fmt"

)

func main() {

    fmt.Printf("%#v\n",deviceSchemaJson)

}

var deviceSchemaJson = value{

    "additionalProperties": false,

    "properties": value{

        "application": value{

            "type": "string",

        },

        "hostname": value{

            "type": "string",

        },

        "ipaddress": value{

            "oneOf": []valuestring{{"format": "ipv4"}, {"format": "ipv6"}},

            "type":  "string",

        },

        "kernel_version": valuestring{

            "type": "string",

        },

    },

    "type": "object",

}

type value map[string]interface{}

type valuestring map[string]string

https://play.golang.org/p/6Kq5pvXYvNm

Answer 2

如何避免每次都定义？map[string]string

通过定义表示数据结构的类型。

type DeviceSchema struct {

    AdditionalProperties bool

    Properties Properties

    Type string

}

type Properties struct {

    Application string

    Hostname string

    IpAddress []map[string]string

    KernelVersion string

}

func main() {

    deviceSchemaData := DeviceSchema{

        AdditionalProperties: false,

        Properties: Properties{

            IpAddress: []map[string]string{{"format": "ipv4"},{"format": "ipv6"}},

        },

        Type: "object",

    }

    fmt.Println(deviceSchemaData)

}

https://play.golang.org/p/iHfoft1zyAn

Answer 3

简化定义的一种方法是：

func stringMap(s...string) map[string]string {

  ret:=map[string]string{}

  for i:=0; i<len(s);i+=2 {

     ret[s[i]]=s[i+1]

  }

  return ret

}

var deviceSchemaJson = map[string]interface{}{

    "additionalProperties": false,

    "properties": map[string]interface{}{

        "application": stringMap("type","string"),

        "hostname": stringMap("type","string"),

        "ipaddress": map[string]interface{}{

            "oneOf": []map[string]string{stringMap("format","ipv4"),stringMap("format","ipv6")},

            "type": "string",

        },

        "kernel_version": stringMap("type","string"),

    },

    "type": "object",

}