go安装部分库, 代码

package main

import (
	"html/template"
	"io/ioutil"
	"net/http"

	"github.com/gin-gonic/gin"
	"github.com/microcosm-cc/bluemonday"
	"github.com/russross/blackfriday"
)

func main() {

	r := gin.Default()
	r.LoadHTMLGlob("html/*")
	r.GET("/index", func(c *gin.Context) {
		// input := []byte("### lijinquan.com是个不错的网站")
		input, err := ioutil.ReadFile("./test.md")
		if err != nil {
			panic(err)
		}
		unsafe := blackfriday.MarkdownCommon(input)
		content := bluemonday.UGCPolicy().SanitizeBytes(unsafe)
		// fmt.Println(string(content))

		c.HTML(http.StatusOK, "md.html", gin.H{"title": "我是测试", "content": template.HTML(string(content))})
	})
	r.Run()

}

Html/md.html

<!doctype html>
<html>
<head>
<meta charset='UTF-8'><meta name='viewport' content='width=device-width initial-scale=1'>
<title>{{.title}}</title>
</head>
<body >
<div class=''>{{.content}}</div>
</body>

<link href="https://cdn.bootcdn.net/ajax/libs/highlight.js/11.1.0/styles/base16/default-light.min.css" rel="stylesheet">
<script src="https://cdn.bootcdn.net/ajax/libs/highlight.js/11.1.0/highlight.min.js"></script>
<script>
hljs.highlightAll();
</script>

</html>