英文:
Creating a contact form with Gomail
问题
我目前正在学习Go，并尝试创建一个联系表单。我之前使用默认的net/smtp包来发送邮件，但后来我发现了Gomail，它使发送电子邮件变得更加简单。
以下是联系表单的HTML代码：
<h1>Contact Us</h1><form action="/" method="post" novalidate><div><label>Email Address</label><input type="email" name="email" value="{{ .Email }}"></div><div><label>Message:</label><textarea name="content">{{ .Content }}</textarea></div><div><input type="submit" value="Submit"></div></form>
我使用Go的html/template包来获取这些值。
以下是main.go的代码：
package mainimport ("fmt""github.com/bmizerany/pat""gopkg.in/gomail.v2""html/template""log""net/http")func main() {mux := pat.New()mux.Get("/", http.HandlerFunc(index))mux.Post("/", http.HandlerFunc(send))mux.Get("/confirmation", http.HandlerFunc(confirmation))log.Println("Listening...")http.ListenAndServe(":2016", mux)}func index(w http.ResponseWriter, r *http.Request) {render(w, "templates/index.html", nil)}func send(w http.ResponseWriter, r *http.Request) {m := &Message{Email: r.FormValue("email"),Content: r.FormValue("content"),}if err := m.Deliver(); err != nil {http.Error(w, err.Error(), http.StatusInternalServerError)return}http.Redirect(w, r, "/confirmation", http.StatusSeeOther)}func confirmation(w http.ResponseWriter, r *http.Request) {render(w, "templates/confirmation.html", nil)}func render(w http.ResponseWriter, filename string, data interface{}) {tmpl, err := template.ParseFiles(filename)if err != nil {http.Error(w, err.Error(), http.StatusInternalServerError)}if err := tmpl.Execute(w, data); err != nil {http.Error(w, err.Error(), http.StatusInternalServerError)}}type Message struct {Email stringContent string}func (m *Message) Deliver() {msg := gomail.NewMessage()msg.SetHeader("From", "John Smith <jsmith@gmail.com>")msg.SetHeader("To", "John Smith <jsmith@gmail.com>")msg.SetAddressHeader("reply-to", m.Email)msg.SetHeader("Subject", "Contact")msg.SetBody("text/html", "<b>Message</b>: "+m.Content)d := gomail.NewDialer("smtp.gmail.com", 587, "jsmith@gmail.com", "password")if err := d.DialAndSend(msg); err != nil {panic(err)}}
基本上，这段代码会提供索引页面（即联系表单）和确认页面。它还定义了Email和Content字符串。如果我想要打印出消息的内容，我可以使用m.Content，但由于Gomail要求提供邮件正文并提供HTML，我不知道如何从表单中获取字符串并像这样添加：
m.SetBody("text/html", "<b>Message</b>: <!-- Content Goes Here -->")
以上是你要翻译的内容。
英文:
I am currently learning Go, and I am trying to create a contact form. I was using the default net/smtp package to send my mail, but then I stumbled upon Gomail. It made it so much easier to send an email.
Here is the html for the contact form:
<h1>Contact Us</h1><form action="/" method="post" novalidate><div><label>Email Address</label><input type="email" name="email" value="{{ .Email }}"></div><div><label>Message:</label><textarea name="content">{{ .Content }}</textarea></div><div><input type="submit" value="Submit"></div></form>
I'm using Go's html/template package to get the values.
main.go:
package mainimport ("fmt""github.com/bmizerany/pat""gopkg.in/gomail.v2""html/template""log""net/http")func main() {mux := pat.New()mux.Get("/", http.HandlerFunc(index))mux.Post("/", http.HandlerFunc(send))mux.Get("/confirmation", http.HandlerFunc(confirmation))log.Println("Listening...")http.ListenAndServe(":2016", mux)}func index(w http.ResponseWriter, r *http.Request) {render(w, "templates/index.html", nil)}func send(w http.ResponseWriter, r *http.Request) {m := &Message{Email: r.FormValue("email"),Content: r.FormValue("content"),}if err := m.Deliver(); err != nil {http.Error(w, err.Error(), http.StatusInternalServerError)return}http.Redirect(w, r, "/confirmation", http.StatusSeeOther)}func confirmation(w http.ResponseWriter, r *http.Request) {render(w, "templates/confirmation.html", nil)}func render(w http.ResponseWriter, filename string, data interface{}) {tmpl, err := template.ParseFiles(filename)if err != nil {http.Error(w, err.Error(), http.StatusInternalServerError)}if err := tmpl.Execute(w, data); err != nil {http.Error(w, err.Error(), http.StatusInternalServerError)}}type Message struct {Email stringContent string}func (m *Message) Deliver() {m := gomail.NewMessage()m.SetHeader("From", "John Smith <jsmith@gmail.com>")m.SetHeader("To", "John Smith <jsmith@gmail.com>")m.SetAddressHeader("reply-to", "m.Email")m.SetHeader("Subject", "Contact")m.SetBody("text/html", "<b>Message</b>: m.Content")d := gomail.NewDialer("smtp.gmail.com", 587, "jsmith@gmail.com", "password")if err := d.DialAndSend(m); err != nil {panic(err)}}
Basically what this does is serve the index page (the contact form) and the confirmation page. It also defines the Email and Contact strings. If I wanted to print out the content of the message, I can just use m.Content, but since Gomail asks for the body and serves html, I don't really know a way to get the string from the form and add it like this:
m.SetBody("text/html", "<b>Message</b>: <!-- Content Goes Here -->")`
答案1
得分: 1
在这种情况下，你可以使用Sprintf格式化方法。在你的特定情况下：
m.SetBody("text/html", fmt.Sprintf("<b>Message</b>: %s", m.Content))
英文:
In this case what you can do, is to use the Sprintf formatting method. In your particular case:
m.SetBody("text/html", fmt.Sprintf("<b>Message</b>: %s", m.Content))
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论