我有以下程序，我需要在其中解析具有以下結(jié)構(gòu)的 yamlhttps://codebeautify.org/yaml-validator/cbabd352 這是有效的 yaml，我使用 byte 使其更簡單，也許在復(fù)制粘貼到問題期間更改了縮進，但您可以在鏈接中看到 yaml 有效yaml 有一個 api_version 和跑步者，對于每個跑步者（鍵是名稱）我有一個命令列表，我需要打印這些命令，function1我function4在這里做錯了什么？package mainimport ( "fmt" "log" "gopkg.in/yaml.v2")var runContent = []byte(`api_ver: 1runners: - name: function1 type: - command: spawn child process - command: build - command: gulp - name: function2 type: - command: run function 1 - name: function3 type: - command: ruby build - name: function4 type: - command: go build`)type Result struct { Version string `yaml:"api_ver"` Runners []Runners `yaml:"runners"`}type Runners struct { Name string `yaml:"name"` Type []Command `yaml:"type"`}type Command struct { Command string `yaml:"command"`}func main() { var runners []Result err := yaml.Unmarshal(runContent, &runners) if err != nil { log.Fatalf("Error : %v", err) } fmt.Printf("%+v", runners[0])}我得到的錯誤cannot unmarshal !!map into []main.Result我無法更改 yaml，它應(yīng)該完全像這樣https://codebeautify.org/yaml-validator/cbabd352這是代碼 https://play.golang.org/p/zidjOA6-gc7
1 回答
倚天杖
TA貢獻1828條經(jīng)驗 獲得超3個贊
您提供的 yaml 包含令牌錯誤。在此處驗證代碼中使用的 yaml https://codebeautify.org/yaml-validator/cbaabb32
之后創(chuàng)建結(jié)構(gòu)類型結(jié)果的變量而不是數(shù)組。因為您使用的 yaml 正在創(chuàng)建一個帶有 Runners 數(shù)組和 api_version 的結(jié)構(gòu)。
這
var runners []Result
應(yīng)該
var runners Result
因為因為結(jié)構(gòu)不是切片。獲取 yaml 中使用的函數(shù)名稱的命令列表。您需要遍歷 runners 數(shù)組以找到函數(shù)名稱并獲取該函數(shù)的命令值。下面是工作代碼：
package main
import (
"fmt"
"log"
"gopkg.in/yaml.v2"
)
var runContent = []byte(`
api_ver: 1
runners:
- name: function1
type:
- command: spawn child process
- command: build
- command: gulp
- name: function2
type:
- command: run function 1
- name: function3
type:
- command: ruby build
- name: function4
type:
- command: go build
`)
type Result struct {
Version string `yaml:"api_ver"`
Runners []Runners `yaml:"runners"`
}
type Runners struct {
Name string `yaml:"name"`
Type []Command `yaml:"type"`
}
type Command struct {
Command string `yaml:"command"`
}
func main() {
var runners Result
// parse mta yaml
err := yaml.Unmarshal(runContent, &runners)
if err != nil {
log.Fatalf("Error : %v", err)
}
commandList := getCommandList("function1", runners.Runners)
fmt.Printf("%+v", commandList)
}
func getCommandList(name string, runners []Runners) []Command {
var commandList []Command
for _, value := range runners {
if value.Name == name {
commandList = value.Type
}
}
return commandList
}
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