go : gin 加载html

背景：
本文介绍使用 LoadHTMLGlob() or LoadHTMLFiles() 加载html资源
代码：

package main

import (
	"fmt"
	"html/template"
	"net/http"
	"time"

	"github.com/gin-gonic/gin"
)

func formatAsDate(t time.Time) string {
	year, month, day := t.Date()
	return fmt.Sprintf("%d/%02d/%02d", year, month, day)
}

func main() {
	router := gin.Default()
	router.Delims("{[{", "}]}")
	router.SetFuncMap(template.FuncMap{
		"formatAsDate": formatAsDate,
	})
	router.LoadHTMLFiles("./html/raw.tmpl")

	router.GET("/raw", func(c *gin.Context) {
		c.HTML(http.StatusOK, "raw.tmpl", map[string]interface{}{
			"now": time.Date(2017, 07, 01, 0, 0, 0, 0, time.UTC),
		})
	})

	router.Run(":8080")
}

资源文件
html/data.tmpl

Date: {[{.now | formatAsDate}]}

执行代码

->go run main.go 
[GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.

[GIN-debug] [WARNING] Running in "debug" mode. Switch to "release" mode in production.
 - using env:	export GIN_MODE=release
 - using code:	gin.SetMode(gin.ReleaseMode)

[GIN-debug] GET    /raw                      --> main.main.func1 (3 handlers)
[GIN-debug] Listening and serving HTTP on :8080
[GIN] 2019/12/06 - 10:00:30 | 404 |        1.69µs |             ::1 | GET      /
[GIN] 2019/12/06 - 10:00:39 | 200 |    1.606132ms |             ::1 | GET      /raw

访问效果