邮件基本包

+package goemail
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"net/smtp"
+)
+
+//loginAuth实现smtp.Auth的接口，实现登录身份验证机制的验证.
+//扩展net/smtp中实现的认证机制，net/smtp中仅实现了PlainAuth和CRAMMD5Auth
+type loginAuth struct {
+	username string
+	password string
+	host     string
+}
+
+var _ smtp.Auth = &loginAuth{}
+
+func (a *loginAuth) Start(server *smtp.ServerInfo) (string, []byte, error) {
+	if !server.TLS {
+		advertised := false
+		for _, mechanism := range server.Auth {
+			if mechanism == "LOGIN" {
+				advertised = true
+				break
+			}
+		}
+		if !advertised {
+			return "", nil, errors.New("mail: unencrypted connection")
+		}
+	}
+	if server.Name != a.host {
+		return "", nil, errors.New("mail: wrong host name")
+	}
+	return "LOGIN", nil, nil
+}
+
+func (a *loginAuth) Next(fromServer []byte, more bool) ([]byte, error) {
+	if !more {
+		return nil, nil
+	}
+
+	switch {
+	case bytes.Equal(fromServer, []byte("username:")):
+		return []byte(a.username), nil
+	case bytes.Equal(fromServer, []byte("Password:")):
+		return []byte(a.password), nil
+	default:
+		return nil, fmt.Errorf("mail: unexpected server challenge: %s", fromServer)
+	}
+}

 package goemail
 
 import (
-	"bytes"
-	"encoding/base64"
-	"fmt"
 	"net/smtp"
-	"strings"
-	"time"
 )
 
-type EmailHeader struct {
-	Key   string
-	Value string
-}
-
-type EmailMessage struct {
-	FromEmail       string        //发件人邮箱地址
-	Header          []EmailHeader //TODO
-	Toers           []string      //邮件接收人，如有多个，则以英文逗号(“,”)隔开，不能为空
-	Subject         string        //主题
-	BodyContentType string
-	Body            []byte //内容
-	//TODO	Copyers    []string //邮件抄送人，如有多个，则以英文逗号(“,”)隔开，不能为空
-	//TODO附加
-}
-
-func (e *EmailMessage) AddToer(v string) {
-	e.Toers = append(e.Toers, v)
-}
-
-func (e *EmailMessage) SetBody(v []byte) {
-	e.Body = v
-}
-func (e *EmailMessage) Bytes() []byte {
-	buf := bytes.NewBuffer(nil)
-	buf.WriteString(fmt.Sprintf("From:%s \r\n", e.FromEmail))
-	t := time.Now().Format(time.RFC1123Z)
-	buf.WriteString(fmt.Sprintf("Date:%s \r\n", t))
-	buf.WriteString(fmt.Sprintf("To:%s \r\n", strings.Join(e.Toers, ",")))
-	var subject = "=?UTF-8?B?" + base64.StdEncoding.EncodeToString([]byte(e.Subject)) + "?="
-	buf.WriteString("Subject: " + subject + "\r\n")
-	buf.WriteString("MIME-Version: 1.0\r\n")
-	//TODO 添加header
-	boundary := "THIS_IS_BOUNDARY"
-	buf.WriteString("Content-Type: multipart/mixed; boundary=" + boundary + "\r\n")
-	buf.WriteString("\r\n--" + boundary + "\r\n")
-	buf.WriteString(fmt.Sprintf("Content-Type: %s; charset=utf-8\r\n\r\n", e.BodyContentType))
-	buf.Write(e.Body)
-	buf.WriteString("\r\n")
-	buf.WriteString("--" + boundary + "--")
-	//TODO添加附件
-	return buf.Bytes()
-}
+// ServerHost      string //邮箱服务器地址
+// ServerPort      string   //邮箱服务器的端口
+// FromPasswd      string //密码
 
-// func (e *EmailMessage) To() []string {
-// 	return e.Toers
-// }
-func NewHtmlEmail() *EmailMessage {
-	return nil
+//NewPlainAuth
+func NewPlainAuth(fromEmail string, pwd string, host string) smtp.Auth {
+	return smtp.PlainAuth("", fromEmail, pwd, host)
 }
 
-func (e *EmailMessage) AddHeader(key string, value string) EmailHeader {
-	newHeader := EmailHeader{Key: key, Value: value}
-	e.Header = append(e.Header, newHeader)
-	return newHeader
+func NewLoginAuth(fromEmail string, pwd string, host string) smtp.Auth {
+	return &loginAuth{
+		username: fromEmail,
+		password: pwd,
+		host:     host,
+	}
 }
 
-// ServerHost      string        //邮箱服务器地址
-// ServerPort      int           //邮箱服务器的端口
-// FromPasswd      string        //发件人邮箱密码
-func NewSmtpAuth(fromEmail string, pwd string, host string) smtp.Auth {
-	return smtp.PlainAuth("", fromEmail, pwd, host)
-}
 func Send(addr string, auth smtp.Auth, m *EmailMessage) error {
 	return smtp.SendMail(addr, auth, m.FromEmail, m.Toers, m.Bytes())
 }

+package goemail
+
+import "testing"
+
+const (
+	testTo1  = "554895468@qq.com"
+	testTo2  = "to2@example.com"
+	testFrom = ""
+	testpwd  = ""
+	testBody = "Test message"
+	testMsg  = "To: " + testTo1 + ", " + testTo2 + "\r\n" +
+		"From: " + testFrom + "\r\n" +
+		"Mime-Version: 1.0\r\n" +
+		"Date: Wed, 25 Jun 2014 17:46:00 +0000\r\n" +
+		"Content-Type: text/plain; charset=UTF-8\r\n" +
+		"Content-Transfer-Encoding: quoted-printable\r\n" +
+		"\r\n" +
+		testBody
+)
+
+func TestSend(T *testing.T) {
+	m := &EmailMessage{
+		FromEmail:       testFrom,
+		Toers:           []string{testTo1},
+		Subject:         "测试邮件",
+		BodyContentType: "text/html",
+		Body:            []byte(testBody),
+	}
+	auth := NewLoginAuth(testFrom, testpwd, "smtp.163.com")
+	err := Send("smtp.163.com:25", auth, m)
+	if err != nil {
+		T.Error(err)
+	}
+}

+package goemail
+
+import (
+	"bytes"
+	"encoding/base64"
+	"fmt"
+	"strings"
+	"time"
+)
+
+type EmailHeader struct {
+	Key   string
+	Value string
+}
+
+type EmailMessage struct {
+	FromEmail string //发件人邮箱地址
+	//	Header          []EmailHeader
+	Toers           []string //邮件接收人，如有多个，则以英文逗号(“,”)隔开，不能为空
+	Subject         string   //主题
+	BodyContentType string   //默认值text/html
+	BodyCharset     string   //字符编码设定默认utf-8
+	Body            []byte   //邮件正文内容
+	//TODO 添加附件
+}
+
+func (e *EmailMessage) AddToer(v string) {
+	e.Toers = append(e.Toers, v)
+}
+
+func (e *EmailMessage) SetBody(v []byte) {
+	e.Body = v
+}
+
+func (e *EmailMessage) SetBodyContentType(v string) {
+	e.BodyContentType = v
+}
+
+func (e *EmailMessage) SetBodyCharset(v string) {
+	e.BodyCharset = v
+}
+
+func (e *EmailMessage) Bytes() []byte {
+	buf := bytes.NewBuffer(nil)
+	buf.WriteString(fmt.Sprintf("From:%s \r\n", e.FromEmail))
+	t := time.Now().Format(time.RFC1123Z)
+	buf.WriteString(fmt.Sprintf("Date:%s \r\n", t))
+	buf.WriteString(fmt.Sprintf("To:%s \r\n", strings.Join(e.Toers, ",")))
+	var subject = "=?UTF-8?B?" + base64.StdEncoding.EncodeToString([]byte(e.Subject)) + "?="
+	buf.WriteString("Subject: " + subject + "\r\n")
+	buf.WriteString("MIME-Version: 1.0\r\n")
+	//TODO 添加header
+	boundary := "THIS_IS_BOUNDARY"
+	buf.WriteString("Content-Type: multipart/mixed; boundary=" + boundary + "\r\n")
+	buf.WriteString("\r\n--" + boundary + "\r\n")
+	buf.WriteString(fmt.Sprintf("Content-Type: %s; charset=%s\r\n\r\n", e.BodyContentType, e.BodyCharset))
+	buf.Write(e.Body)
+	buf.WriteString("\r\n")
+	buf.WriteString("--" + boundary + "--")
+	//TODO添加附件
+	return buf.Bytes()
+}
+
+// func (e *EmailMessage) AddHeader(key string, value string) EmailHeader {
+// 	newHeader := EmailHeader{Key: key, Value: value}
+// 	e.Header = append(e.Header, newHeader)
+// 	return newHeader
+// }