Commons Email 【Z】

liuchang0001發表於2011-04-18

(1)下載Commons Email 

Commons Email位於Apache的Commons下。

地址是:http://commons.apache.org/email/  

下載地址是:http://commons.apache.org/downloads/download_email.cgi

(2)官方簡介:

Commons Email aims to provide a API for sending email. It is built on top of the Java Mail API,       which it aims to simplify. Some of the mail classes that are provided are as follows: 
● SimpleEmail - This class is used to send basic text based emails .
● MultiPartEmail - This class is used to send multipart messages . This allows a text message with  attachments either inline or attached.
● HtmlEmail - This class is used to send HTML formatted emails . It has all of the capabilities as MultiPartEmail allowing attachments to be easily added. It also supports embedded images .
 EmailAttachment - This is a simple container class to allow for easy handling of attachments . It is for use with instances of MultiPartEmail and HtmlEmail.

(3)

Commons-Email 簡單教程

Commons Emails ,目的是為了簡化JavaMail。

知道有它幾個class嗎?你一定想不到,只有8個!

一:Quick Start
通過SimpleEmail傳送郵件

1 java.lang.Object
2   org.apache.commons.mail.Email
3       org.apache.commons.mail.SimpleEmail

 

1 SimpleEmail email  =   new  SimpleEmail();
2 email.setHostName( " mail.4ya.cn " );
3 email.setAuthentication( " <username> " , " <password> " )
4 email.addTo( " martin.xus@gmail.com " " martin " );
5 email.setFrom( " martin@4ya.cn " " martin " );
6 email.setSubject( " 測試主題 " );
7 email.setMsg( " 這裡是郵件內容 " );
8 email.send();


就如程式碼裡字面上的意思一樣簡單:
1:建立以SimpleEmail物件
2:設定傳送信件的smtp伺服器,如果沒有設定,會尋找系統變數中mail.host值。
3:設定smtp的使用者和密碼
4:收件人
5:發件人
6:主題
7:內容
8:傳送

二:傳送帶附件的郵件
我們可以傳送本機的附件,當然我們也可以傳送非本機的附件,如果傳送的是一個存在網路上的附件的url,則郵件傳送的時候會自動下載,新增到附件中。

   1:)傳送本地附件:

1 EmailAttachment attachment  =   new  EmailAttachment();
2 attachment.setPath( " test/test.rar " );
3 attachment.setDisposition(EmailAttachment.ATTACHMENT);
4 attachment.setDescription( " python resource " );
5 attachment.setName( " resource " );


   2:)傳送不存在本地的附件

1 EmailAttachment attachment  =   new  EmailAttachment();
2 attachment.setURL( new  URL( " http://www.smilinglibrary.org/sldoc/pics/index03.jpg " ));
3 attachment.setDisposition(EmailAttachment.ATTACHMENT);
4 attachment.setDescription( " 微笑圖書館 " );
5 attachment.setName( " 微笑圖書館 " );



next,新增附件到我們的郵件中

 1 MultiPartEmail email  =   new  MultiPartEmail();
 2 email.setHostName( " mail.4ya.cn " );
 3    email.setAuthentication(" <username> " , " <password> " )
 4 email.addTo( " martin.xus@gmail.com " " martin " );
 5 email.setFrom( " martin@4ya.cn " " martin " );
 6 email.setSubject( " 郵件主題 " );
 7 email.setMsg( " 郵件內容 " );

 8 // 新增附件
 9 email.attach(attachment);
10
11 // 傳送郵件
12 email.send();


如果需要傳送多個附件,只需建立多個EmailAttachement,即可

1 email.attach(attachment1)
2 email.attach(attachment2)


三:傳送html格式的郵件
通過HtmlEmail我們可以傳送Html格式的郵件:

1 java.lang.Object
2   org.apache.commons.mail.Email
3       org.apache.commons.mail.MultiPartEmail
4           org.apache.commons.mail.HtmlEmail
5


如下:

 1 // HtmlEmail!
 2 HtmlEmail email  =   new  HtmlEmail();
 3 email.setHostName( " mail.4ya.cn " );
 3   email.setAuthentication(" <username> " , " <password> " )
 5 email.addTo("martin@4ya.cn " martin " );
 6 email.setFrom("martin.xus@gmail.com " martin " );
 7 email.setSubject( "主題:該郵件包括html格式內容 " );
 
 8 //  embed the image and get the content id
 9 //  注意這裡:embed 將幫助我們建立標籤如:cid:xxx url
10 URL url  =   new  URL( " http://www.apache.org/images/asf_logo_wide.gif " );
11 String cid  =  email.embed(url,  " Apache logo " );
12
13 /**
14 set the html message
15 我們看到HtmlEmail extends Email的,它依然有setMsg(),但是這裡傳送的郵件包括了插入在郵件內容中的圖片,所以不能在使用了setMsg(),而要以setHtmlMsg 或setTextMsg程式碼
16 * */

17 email.setHtmlMsg( " <html>The apache logo - <img src=\ " cid: " +cid+ " \ " ></html> " );
18
19 //  set the alternative message
20 email.setTextMsg( " Your email client does not support HTML messages " );
21 [iocblog.net 來源]
22 // set mail
23 email.send();
24


四:最後一步
如果需要實現更復雜authenticator 你可以extends javax.mail.Authenticator ,實現你自己的東西,然後呼叫Email.setAuthenticator(javax.mail.Authenticator newAuthenticator)即可

這一點jakarta也做了,給我們提供了一個defaultAuthenticator

1 java.lang.Object
2   javax.mail.Authenticator
3       org.apache.commons.mail.DefaultAuthenticator


覆蓋掉該方法,實現你自己的東東 o_o

1 protected  javax.mail.PasswordAuthentication getPasswordAuthentication()

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