42 lines
960 B
Go
42 lines
960 B
Go
package main
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import (
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"flag"
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"fmt"
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"os"
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)
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func main() {
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port := flag.Int("port", 8080, "服务监听端口")
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config := flag.String("config", "./config.yaml", "配置文件路径")
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// 重写全局帮助信息
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flag.Usage = func() {
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_, err := fmt.Fprintf(flag.CommandLine.Output(), "=== 服务启动工具 V1.0 ===\n\n")
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if err != nil {
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return
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}
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_, err = fmt.Fprintf(flag.CommandLine.Output(), "用法：%s [可选参数]\n\n", os.Args[0])
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if err != nil {
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return
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}
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_, err = fmt.Fprintf(flag.CommandLine.Output(), "参数说明：\n")
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if err != nil {
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return
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}
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flag.PrintDefaults()
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_, err = fmt.Fprintf(flag.CommandLine.Output(), "\n使用示例：\n")
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if err != nil {
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return
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}
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_, err = fmt.Fprintf(flag.CommandLine.Output(), " %s -port=8080 -config=app.yaml\n", os.Args[0])
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if err != nil {
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return
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}
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}
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flag.Parse()
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fmt.Printf("服务启动成功，端口：%d，配置文件：%s\n", *port, *config)
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}
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