我有一张地图
{
"m_key": 123,
"z_key": 123,
"a_key": 123,
"f_key": 123
}
当我尝试从中制作一个json并进行打印时,我的json将按键排序,并且我得到json:
{
"a_key": 123,
"f_key": 123,
"m_key": 123,
"z_key": 123
}
答案 0 :(得分:-1)
要回答原始问题,请使用有序地图
package main
import (
"encoding/json"
"fmt"
"github.com/iancoleman/orderedmap"
)
func main() {
o := orderedmap.New()
// use Set instead of o["a"] = 1
o.Set("m_key", "123") // go json.Marshall doesn't like integers
o.Set("z_key", "123")
o.Set("a_key", "123")
o.Set("f_key", "123")
// serialize to a json string using encoding/json
prettyBytes, _ := json.Marshal(o)
fmt.Printf("%s", prettyBytes)
}
但是根据规范https://json-schema.org/latest/json-schema-core.html#rfc.section.4.2 无法保证兑现了地图的顺序,因此最好使用数组代替json输出
// convert to array
fmt.Printf("\n\n\n")
arr := make([]string, 8)
c := 0
for _, k := range o.Keys() {
arr[c] = k
c++
v, _ := o.Get(k)
arr[c], _ = v.(string)
c++
}
morePretty, _ := json.Marshal(arr)
fmt.Printf("%s", morePretty)
重新加载数组时,其顺序正确