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Commons Email 【Z】

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(1)下载Commons Email 

Commons Email位于Apache的Commons下。

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

下载地址是:http://commons.apache.org/downloads/download_email.cgi

(2)官方简介:

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 简单教程

Commons Emails ,目的是为了简化JavaMail。

知道有它几个class吗?你一定想不到,只有8个!

一:Quick Start
通过SimpleEmail发送邮件

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( " 测试主题 " );
7 email.setMsg( " 这里是邮件内容 " );
8 email.send();


就如代码里字面上的意思一样简单:
1:创建以SimpleEmail对象
2:设定发送信件的smtp服务器,如果没有设定,会寻找系统变量中mail.host值。
3:设定smtp的用户和密码
4:收件人
5:发件人
6:主题
7:内容
8:发送

二:发送带附件的邮件
我们可以发送本机的附件,当然我们也可以发送非本机的附件,如果发送的是一个存在网络上的附件的url,则邮件发送的时候会自动下载,添加到附件中。

   1:)发送本地附件:

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:)发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( " 微笑图书馆 " );
5 attachment.setName( " 微笑图书馆 " );



next,添加附件到我们的邮件中

 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( " 邮件主题 " );
 7 email.setMsg( " 邮件内容 " );

 8 // 添加附件
 9 email.attach(attachment);
10
11 // 发送邮件
12 email.send();


如果需要发送多个附件,只需创建多个EmailAttachement,即可

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


三:发送html格式的邮件
通过HtmlEmail我们可以发送Html格式的邮件:

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( "主题:该邮件包括html格式内容 " );
 
 8 //  embed the image and get the content id
 9 //  注意这里:embed 将帮助我们创建标签如: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 我们看到HtmlEmail extends Email的,它依然有setMsg(),但是这里发送的邮件包括了插入在邮件内容中的图片,所以不能在使用了setMsg(),而要以setHtmlMsg 或setTextMsg代码
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 来源]
22 // set mail
23 email.send();
24


四:最后一步
如果需要实现更复杂authenticator 你可以extends javax.mail.Authenticator ,实现你自己的东西,然后调用Email.setAuthenticator(javax.mail.Authenticator newAuthenticator)即可

这一点jakarta也做了,给我们提供了一个defaultAuthenticator

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


覆盖掉该方法,实现你自己的东东 o_o

1 protected  javax.mail.PasswordAuthentication getPasswordAuthentication()

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