Golang使用lxn/walk做GUI界面开发:邮件群发器
我也是刚刚使用walk这个组件,很多控件接口不熟悉,把我上次发的邮件群发器修改成图形界面的,线程发送邮件,gob库保存数据等。只提供作学习交流,仅供参考(界面很烂)。
接下来是main.go的代码:
// Multi-SendEmail project main.go package main import ( "bufio" "encoding/gob" "errors" "fmt" "io" "net/smtp" "os" "strconv" "strings" "time" ) import ( "github.com/lxn/walk" . "github.com/lxn/walk/declarative" ) type ShuJu struct { Name string Pwd string Host string Subject string Body string Send string } func SendMail(user, password, host, to, subject, body, mailtype string) error { fmt.Println("Send to " + to) //fmt.Println(user, password, host, to, subject, body, mailtype) hp := strings.Split(host, ":") auth := smtp.PlainAuth("", user, password, hp[0]) var content_type string if mailtype == "html" { content_type = "Content-Type: text/html;charset=UTF-8" } else { content_type = "Content-Type: text/plain;charset=UTF-8" } body = strings.TrimSpace(body) msg := []byte("To: " + to + "\r\nFrom: " + user + "<" + user + ">\r\nSubject: " + subject + "\r\n" + content_type + "\r\n\r\n" + body) send_to := strings.Split(to, ";") err := smtp.SendMail(host, auth, user, send_to, msg) if err != nil { fmt.Println(err.Error()) } return err } func readLine2Array(filename string) ([]string, error) { result := make([]string, 0) file, err := os.Open(filename) if err != nil { return result, errors.New("Open file failed.") } defer file.Close() bf := bufio.NewReader(file) for { line, isPrefix, err1 := bf.ReadLine() if err1 != nil { if err1 != io.EOF { return result, errors.New("ReadLine no finish") } break } if isPrefix { return result, errors.New("Line is too long") } str := string(line) result = append(result, str) } return result, nil } func DelArrayVar(arr []string, str string) []string { str = strings.TrimSpace(str) for i, v := range arr { v = strings.TrimSpace(v) if v == str { if i == len(arr) { return arr[0 : i-1] } if i == 0 { return arr[1:len(arr)] } a1 := arr[0:i] a2 := arr[i+1 : len(arr)] return append(a1, a2...) } } return arr } func LoadData() { fmt.Println("LoadData") file, err := os.Open("data.dat") defer file.Close() if err != nil { fmt.Println(err.Error()) SJ.Name = "用户名" SJ.Pwd = "用户密码" SJ.Host = "SMTP服务器:端口" SJ.Subject = "邮件主题" SJ.Body = "邮件内容" SJ.Send = "要发送的邮箱,每行一个" return } dec := gob.NewDecoder(file) err2 := dec.Decode(&SJ) if err2 != nil { fmt.Println(err2.Error()) SJ.Name = "用户名" SJ.Pwd = "用户密码" SJ.Host = "SMTP服务器:端口" SJ.Subject = "邮件主题" SJ.Body = "邮件内容" SJ.Send = "要发送的邮箱,每行一个" } } func SaveData() { fmt.Println("SaveData") file, err := os.Create("data.dat") defer file.Close() if err != nil { fmt.Println(err) } enc := gob.NewEncoder(file) err2 := enc.Encode(SJ) if err2 != nil { fmt.Println(err2) } } var SJ ShuJu var runing bool var chEnd chan bool func main() { LoadData() chEnd = make(chan bool) var emails, body, msgbox *walk.TextEdit var user, password, host, subject *walk.LineEdit var startBtn *walk.PushButton MainWindow{ Title: "邮件群发器 By 一曲忧伤", MinSize: Size{800, 600}, Layout: HBox{}, Children: []Widget{ TextEdit{AssignTo: &emails, Text: SJ.Send, ToolTipText: "待发送邮件列表,每行一个"}, VSplitter{ Children: []Widget{ LineEdit{AssignTo: &user, Text: SJ.Name, CueBanner: "请输入邮箱用户名"}, LineEdit{AssignTo: &password, Text: SJ.Pwd, PasswordMode: true, CueBanner: "请输入邮箱登录密码"}, LineEdit{AssignTo: &host, Text: SJ.Host, CueBanner: "SMTP服务器:端口"}, LineEdit{AssignTo: &subject, Text: SJ.Subject, CueBanner: "请输入邮件主题……"}, TextEdit{AssignTo: &body, Text: SJ.Body, ToolTipText: "请输入邮件内容", ColumnSpan: 2}, TextEdit{AssignTo: &msgbox, ReadOnly: true}, PushButton{ AssignTo: &startBtn, Text: "开始群发", OnClicked: func() { SJ.Name = user.Text() SJ.Pwd = password.Text() SJ.Host = host.Text() SJ.Subject = subject.Text() SJ.Body = body.Text() SJ.Send = emails.Text() SaveData() if runing == false { runing = true startBtn.SetText("停止发送") go sendThread(msgbox, emails) } else { runing = false startBtn.SetText("开始群发") } }, }, }, }, }, }.Run() } func sendThread(msgbox, es *walk.TextEdit) { sendTo := strings.Split(SJ.Send, "\r\n") susscess := 0 count := len(sendTo) for index, to := range sendTo { if runing == false { break } msgbox.SetText("发送到" + to + "..." + strconv.Itoa((index/count)*100) + "%") err := SendMail(SJ.Name, SJ.Pwd, SJ.Host, to, SJ.Subject, SJ.Body, "html") if err != nil { msgbox.AppendText("\r\n失败:" + err.Error() + "\r\n") if err.Error() == "550 Mailbox not found or access denied" { SJ.Send = strings.Join(DelArrayVar(strings.Split(SJ.Send, "\r\n"), to), "\r\n") es.SetText(SJ.Send) } time.Sleep(1 * time.Second) continue } else { susscess++ msgbox.AppendText("\r\n发送成功!") SJ.Send = strings.Join(DelArrayVar(strings.Split(SJ.Send, "\r\n"), to), "\r\n") es.SetText(SJ.Send) } time.Sleep(1 * time.Second) } SaveData() msgbox.AppendText("停止发送!成功 " + strconv.Itoa(susscess) + " 条\r\n") }
然后是walk程序所用的main.manifest,完全照抄官方的,还没研究其中意思:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"> <assemblyIdentity version="1.0.0.0" processorArchitecture="*" name="SomeFunkyNameHere" type="win32"/> <dependency> <dependentAssembly> <assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0" processorArchitecture="*" publicKeyToken="6595b64144ccf1df" language="*"/> </dependentAssembly> </dependency> </assembly>
通过这个main.manifest执行(如果walk安装好了,应该就有这个命令):
rsrc -manifest main.manifest -o rsrc.syso
上图是rsrc命令的参数列表,比如我为自已的程序加个ico图标:
rsrc -manifest main.manifest –ico icon.ico -o rsrc.syso
总结:只要熟悉这些非常强大的第三方库,Go应该也可以做出非常不错的图形应用程序,对于接触C、C++过晚的朋友来说非常合适。
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