如何使用Go语言中的时间函数生成日历并输出到HTML文件？

package main

import (
    "fmt"
    "os"
    "time"
)

// 生成日历的HTML代码片段
func generateCalendar(year, month int) string {
    // 生成日历的标题
    title := fmt.Sprintf("
%d年%d月
", year, month)

    // 获取当月第一天的日期
    firstDay := time.Date(year, time.Month(month), 1, 0, 0, 0, 0, time.Local)

    // 获取当月的天数
    daysInMonth := time.Date(year, time.Month(month+1), 0, 0, 0, 0, 0, time.Local).Day()

    // 生成日历的表格头部
    tableHeader := "日一二三四五六"

    // 生成日历的表格内容
    tableContent := ""
    weekday := int(firstDay.Weekday())
    if weekday == 0 {
        weekday = 7
    }
    for i := 1; i < weekday; i++ {
        tableContent += ""
    }
    for day := 1; day <= daysInMonth; day++ {
        if weekday == 1 {
            tableContent += ""
        }
        tableContent += fmt.Sprintf("%d", day)
        if weekday == 7 {
            tableContent += ""
            weekday = 0
        }
        weekday++
    }
    for weekday != 1 {
        tableContent += ""
        if weekday == 7 {
            tableContent += ""
        }
        weekday++
    }

    // 生成完整的日历表格
    table := fmt.Sprintf("%s%s", tableHeader, tableContent)

    // 返回日历的HTML代码片段
    return title + table
}

func main() {
    year, month := time.Now().Year(), int(time.Now().Month())

    // 生成当前月份的日历
    calendar := generateCalendar(year, month)

    // 将日历输出到HTML文件
    file, err := os.Create("calendar.html")
    if err != nil {
        fmt.Println("无法创建文件：", err)
        return
    }
    defer file.Close()

    file.WriteString("
")
    file.WriteString(calendar)
    file.WriteString("")

    fmt.Println("已生成日历文件：calendar.html")
}