我刚刚开始使用Go,我想用它创建一个Web应用程序.我现在正在尝试的是以handlebarsjs-esque的方式使用模板.我想将页眉和页脚从主页面中拉出来,这样我就可以将它们注入每个网页.
我当前的设置应该解析主页,页眉和页脚HTML文件并缓存它们.然后我执行我的home.html模板,其中包含Title,header.html文件和footer.html文件页面的字段.
每当我搜索类似的页面时,我只看到javascript页面,所以如果这是一个转发,请告诉我在哪里查看.
编辑:
我已经更新了我的代码,以便从@Minty和@putu的答案中获取提示.我正在尝试读取html文件并将它们存储在数据映射中,同时还将模板添加define到我的模板中.我正在努力挤压一些新的错误,因此该网站目前无法呈现.但是,如果有任何新的提示你可以提供,这将有很大帮助.
server.go
package main
import (
"html/template"
"io/ioutil"
"net/http"
"regexp"
)
var tPath = "./temps/"
var dPath = "./data/"
var templates = template.Must(template.ParseFiles(tPath+"home.html", dPath+"header.html", dPath+"footer.html"))
var validPath = regexp.MustCompile("^/")
func rootHandler(wr http.ResponseWriter, req *http.Request) {
title := "home"
headerFile, headErr := ioutil.ReadFile(dPath + "header.html")
footerFile, footErr := ioutil.ReadFile(dPath + "footer.html")
if headErr != nil || footErr != nil {
http.Error(wr, headErr.Error(), http.StatusInternalServerError)
http.Error(wr, footErr.Error(), http.StatusInternalServerError)
}
data := map[string]interface{}{
"Title": title,
"Header": string(headerFile),
"Footer": string(footerFile),
}
err := templates.ExecuteTemplate(wr, title+".html", data)
if err != nil {
http.Error(wr, err.Error(), http.StatusInternalServerError)
}
}
func main() {
http.HandleFunc("/", rootHandler)
http.ListenAndServe(":8080", nil)
}
home.html的:
{{define "homeHTML"}}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>{{.Title}} - MySite</title>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
{{.Header}}
<h1>Welcome!</h1>
{{.Footer}}
</body>
</html>
{{end}}
header.html中:
{{define "headerHTML"}}
<header>
<h1>MySite</h1>
<br>
<nav>
<a href="/">Home</a>
</nav>
</header>
{{end}}
Footer.html
{{define "footerHTML"}}
<footer>
<p>Thank You for Visiting</p>
</footer>
{{end}}
这是完整的工作示例.
// home.html inside temps folder
{{define "homeHTML"}}
{{template "headHTML" .}}
{{template "headerHTML" .}}
{{template "footerHTML" .}}
{{end}}
// head.html inside data folder
{{define "headHTML"}}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>{{.title}} - MySite</title>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
{{end}}
// header.html inside data folder
{{define "headerHTML"}}
<header>
{{.header}}
<h1>Welcome to my site!</h1>
<br>
<nav>
<a href="/">Home</a>
</nav>
</header>
{{end}}
// footer.html inside data folder
{{define "footerHTML"}}
<h1>Welcome! {{.footer}}</h1>
<footer>
<p>Thank You for Visiting</p>
</footer>
</body>
</html>
{{end}}
代码将是这样的
package main
import (
"html/template"
"io/ioutil"
"net/http"
"path/filepath"
"strings"
)
var tPath = "./temps/"
var dPath = "./data/"
var templateDirs = []string{"temps", "data"}
var templates *template.Template
func getTemplates() (templates *template.Template, err error) {
var allFiles []string
for _, dir := range templateDirs {
files2, _ := ioutil.ReadDir(dir)
for _, file := range files2 {
filename := file.Name()
if strings.HasSuffix(filename, ".html") {
filePath := filepath.Join(dir, filename)
allFiles = append(allFiles, filePath)
}
}
}
templates, err = template.New("").ParseFiles(allFiles...)
return
}
func init() {
templates, _ = getTemplates()
}
func rootHandler(wr http.ResponseWriter, req *http.Request) {
title := "home"
data := map[string]interface{}{
"title": title,
"header": "My Header",
"footer": "My Footer",
}
err := templates.ExecuteTemplate(wr, "homeHTML", data)
if err != nil {
http.Error(wr, err.Error(), http.StatusInternalServerError)
}
}
func main() {
http.HandleFunc("/", rootHandler)
http.ListenAndServe(":8080", nil)
}