无法解组嵌套的 yaml

Question

Yaml 输入：Tasks: - task:     name: 123    retry: 5    next: 123 - task:     name: 123    retry: 5    next: 123代码：package mainimport (    "fmt"    "io/ioutil"    "os"    "gopkg.in/yaml.v2")type Tasks []struct {    Task Task `yaml:"task"`}type Task struct {    Name  string `yaml:"name"`    Retry int    `yaml:"retry"`    Next  string `yaml:"next"`}func main() {    var w Tasks    wfyaml, _ := os.Open(".yaml")    byteValue, _ := ioutil.ReadAll(wfyaml)    yaml.Unmarshal(byteValue, &w)    fmt.Printf("%+v\n", w)}输出：[]我无法弄清楚问题的原因是什么。我已经检查了我能做的。

Answer 1

Tasks您错过了结构（游乐场）中的顶层（）：

package main

import (

    "fmt"

    "gopkg.in/yaml.v2"

)

const yamlStr = `Tasks:

 - task: 

    name: 123

    retry: 5

    next: 123

 - task: 

    name: 123

    retry: 5

    next: 123`

type File struct {

    Tasks Tasks `yaml:"Tasks"`

}

type Tasks []struct {

    Task Task `yaml:"task"`

}

type Task struct {

    Name  string `yaml:"name"`

    Retry int    `yaml:"retry"`

    Next  string `yaml:"next"`

}

func main() {

    var w File

    yaml.Unmarshal([]byte(yamlStr), &w)

    fmt.Printf("%+v\n", w)

}