使用Golang编写一个简单的命令行工具

package cmd

import (
	"io"
	"log"
	"net/http"
)

// Fetch 发起请求
func Fetch() string {
	client := &http.Client{}
	req, _ := http.NewRequest("GET", "https://api.jixs.cc/api/wenan-fkxqs/index.php", nil)
	res, err := client.Do(req)
	if err != nil {
		log.Fatal("Http get error is ", err)
	}
	if res.StatusCode != http.StatusOK {
		log.Fatal("Http status code is ", res.StatusCode)
	}
	defer func(Body io.ReadCloser) {
		err := Body.Close()
		if err != nil {
			log.Fatal(err)
		}
	}(res.Body)
	bytes, err := io.ReadAll(res.Body)
	if err != nil {
		return ""
	}
	return string(bytes)
}

package cmd

import (
	"fmt"
	"github.com/spf13/cobra"
	"os"
)

var ThursdayCmd = &cobra.Command{
	Use:   "Thursday [文案]",
	Short: "crazy Thursday",
	Long:  `crazy Thursday`,
	Run: func(cmd *cobra.Command, args []string) {
		res := Fetch()
		Print(res)
		fmt.Println(res)
	},
}

var rootCmd = &cobra.Command{
	Use: "ct",
}

func Execute() {
	rootCmd.AddCommand(ThursdayCmd)
	rootCmd.SetHelpCommand(ThursdayCmd)
	if err := rootCmd.Execute(); err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
}

package cmd

import (
	"fmt"
	"log"
	"os"
)

func Print(res string) {
	// 创建文件
	file, err := os.Create("./output/output.txt")
	if err != nil {
		fmt.Println("无法创建文件:", err)
		return
	}
	defer func(file *os.File) {
		err := file.Close()
		if err != nil {
			log.Fatal(err)
		}
	}(file)

	// 将内容写入文件
	_, err = file.WriteString(res)
	if err != nil {
		fmt.Println("无法写入文件:", err)
		return
	}

	fmt.Println("内容已成功写入文件 output.txt")
}