做了个简单的留言本用来练习http与template.
主Go代码:
package main//Golang版本的留言本//author:Xiong Chuan Liang//date:2015-3-2import ("fmt""html/template""io/ioutil""net/http""os""log")func main() {http.Handle("/images/", http.FileServer(http.Dir("asset")))http.HandleFunc("/", makeHandleFunc(listHandler))http.HandleFunc("/add", makeHandleFunc(addHandler))if err := http.ListenAndServe(":8055", nil); err != nil {log.Fatal("ListenAndServe: ", err)}}type HandleFuncType func(http.ResponseWriter, *http.Request)func makeHandleFunc(f HandleFuncType)(HandleFuncType){return func(w http.ResponseWriter,r *http.Request){defer func(){if x := recover(); x!= nil {log.Printf("[%v] panic: %v",r.RemoteAddr,x)}}()f(w,r)}}func addHandler(w http.ResponseWriter, r *http.Request) {h, _ := template.ParseFiles("template/addinfo.tpl","template/header.tpl", "template/footer.tpl")h.ExecuteTemplate(w, "addinfo", nil)}func listHandler(w http.ResponseWriter, r *http.Request) {if r.Method == "POST" {r.ParseForm()if len(r.Form["note"][0]) == 0 {infoHandler(w, r, `<b>提交失败!</b> <br/>留言不能为空! <br/> <a href=":8055/add">返回</a>`)return}info := fmt.Sprintf("留言人:<a href='mailto:%s'>%s</a><br/>留言:%s<hr>",r.FormValue("email"), //r.Form.Get("email")r.FormValue("nickname"),r.FormValue("note"))writeInfo(info)}list, _ := readInfo()msg := map[string]template.HTML{"List": template.HTML(list)}h, _ := template.ParseFiles("template/guestbook.tpl","template/header.tpl", "template/footer.tpl")h.ExecuteTemplate(w, "guestbook", msg)}func infoHandler(w http.ResponseWriter, r *http.Request, info string) {var base = `<!DOCTYPE html><html> <head><title>info</title><meta charset="UTF-8"> </head> <body> {{.}} </body></html>`tmpl, err := template.New("提示信息").Parse(base)if err != nil {panic(err)}err = tmpl.Execute(w, template.HTML(info))if err != nil {panic(err)}}const FILENAME = "Guestbook.log"func readInfo() (string, error) {body, err := ioutil.ReadFile(FILENAME)if err != nil {return "", err}return string(body), nil}func writeInfo(str string) bool {f, err := os.OpenFile(FILENAME, os.O_RDWR|os.O_APPEND|os.O_CREATE, os.ModeType)if err != nil {panic(err)}defer f.Close()_, err = f.WriteString(str)if err != nil {panic(err)}return true}
其guestbook.tpl：
{{define "guestbook"}}<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>留言本</title><style type="text/css">body{margin:0;padding:0;background:#EAEAEA; }</style></head><body>{{template "header"}}{{.List}}<center><a href=":8055/add">增加留言</a></center>{{template "footer"}}</body></html>{{end}}实现的效果如下:
整个源码打包在此: 点击下载
MAIL: xcl_168@aliyun.com
BLOG:
，生活若剥去了理想、梦想、幻想，那生命便只是一堆空架子
