不多說，直接上代碼,這三個(gè)文件在 test 目錄下

目錄

----test
--------main.go
--------car.go
--------guyu.go

main

package command

import (
    "log"

    "github.com/spf13/cobra"
)

var Cmd = &cobra.Command{
    Use:     "test",
    Short:   "Run doc short server",
    Long:    `Run doc long server`,
    Version: "1.0.0",
    Example: "this is example",
    Run: func(cmd *cobra.Command, args []string) { // 程序默認(rèn)執(zhí)行的邏輯,./test 時(shí)執(zhí)行
        log.Println("out run args:", args)
        log.Println("out run urlAddress:", urlAddress)
        log.Println("out run worker:", worker)
        log.Println("out run port:", port)
    },
}

var (
    urlAddress string
    worker     int
    port       string
)

func init() {
    Cmd.Flags().StringVar(&urlAddress, "url", "http://127.0.0.1:8080/group1/upload", "url")
    Cmd.Flags().IntVar(&worker, "worker", 100, "num of worker")
    Cmd.Flags().StringVarP(&port, "port", "p", "8080", "port") // 使用 StringVarP 添加簡化參數(shù)，-p
}

func CommandLoad() {
    // 增加自子命令,如果增加了子命令，Run中的 args 參數(shù)對應(yīng)就只能是子命令的，用來執(zhí)行子命令
    // 主命令中不能隨便添加，
    // example：當(dāng)沒有子命令時(shí)，執(zhí)行 ./test aa,args 中會(huì)有 aa 參數(shù)，當(dāng)加上子命令，這么執(zhí)行就會(huì)報(bào)錯(cuò)，只能是對應(yīng)子命令的內(nèi)容，
    // 比如在這里就是只能是, ./test car aa, 在 car 的子命令中的 Run 的 args 中會(huì)獲取到 aa
    Cmd.AddCommand(carCmd, guyuCmd)
    Cmd.Execute()
}

car.go

package command

import (
    "log"

    "github.com/spf13/cobra"
)

var carCmd = &cobra.Command{
    Use:     "car", // 這個(gè)屬性內(nèi)容就是命令的一個(gè)參數(shù)，比如這里： ./test car 加上 car就執(zhí)行這里的 Run 邏輯
    Short:   "Run car short server",
    Long:    `Run car long server`,
    Version: "1.0.1",
    Example: "this is car example",
    Run: func(cmd *cobra.Command, args []string) {
        log.Println("car running:", args)
    },
}

guyu.go

package command

import (
    "log"

    "github.com/spf13/cobra"
)

var guyuCmd = &cobra.Command{
    Use:     "guyu",
    Short:   "Run guyu short server",
    Long:    `Run guyu long server`,
    Version: "1.0.0",
    Example: "this is guyu example",
    Run: func(cmd *cobra.Command, args []string) {
        log.Println("guyu running:", args)
    },
}