官网下载：http://commons.apache.org/email/
commons-email是apache提供的一个开源的API，是对javamail的封装，使用时要将javamail.jar和activation.jar加到class path中，主要包括SimpleEmail,MultiPartEmail,HtmlEmail,EmailAttachment四个类。
SimpleEmail:发送简单的email,不能添加附件
MultiPartEmail:文本邮件，可以添加多个附件
HtmlEmail:HTML格式邮件，同时具有MultiPartEmail类所有“功能”
EmailAttchment:附件类，可以添加本地资源，也可以指定网络上资源，在发送时自动将网络上资源下载发送。
①发送基本文本格式邮件：
public class MailDemo ...{
public static void main(String[] args) ...{
SimpleEmail email = new SimpleEmail();
try ...{
//smtp host
email.setHostName("mail.test.com");
//登陆邮件服务器的用户名和密码
email.setAuthentication("test","testpassword");
//接收人
email.addTo("jdoe@somewhere.org", "John Doe");
//发送人
email.setFrom("me@apache.org", "Me");
//标题
email.setSubject("Test message");
//邮件内容
email.setMsg("This is a simple test of commons-email");
//发送
email.send();
} catch (Exception e) ...{
e.printStackTrace();
}
}
}
public class MailDemo ...{ public static void main(String[] args) ...{ SimpleEmail email = new SimpleEmail(); try ...{ //smtp host email.setHostName("mail.test.com"); //登陆邮件服务器的用户名和密码 email.setAuthentication("test","testpassword"); //接收人 email.addTo("jdoe@somewhere.org", "John Doe"); //发送人 email.setFrom("me@apache.org", "Me"); //标题 email.setSubject("Test message"); //邮件内容 email.setMsg("This is a simple test of commons-email"); //发送 email.send(); } catch (Exception e) ...{ e.printStackTrace(); } }}②发送文本格式，带附件邮件：
==================
//附件，可以定义多个附件对象
public class MailDemo ...{ public static void main(String[] args) ...{ EmailAttachment attachment = new EmailAttachment(); attachment.setPath("e:/1.pdf"); attachment.setDisposition(EmailAttachment.ATTACHMENT); attachment.setDescription("Picture of John"); MultiPartEmail email = new MultiPartEmail(); try ...{ //smtp host email.setHostName("mail.test.com"); //登陆邮件服务器的用户名和密码 email.setAuthentication("test","testpassword"); //接收人 email.addTo("jdoe@somewhere.org", "John Doe"); //发送人 email.setFrom("me@apache.org", "Me"); //标题 email.setSubject("Test message"); //邮件内容 email.setMsg("This is a simple test of commons-email"); //添加附件 email.attach(attachment); //发送 email.send(); } catch (Exception e) ...{ e.printStackTrace(); } }}③发送HTML格式带附件邮件：
=================
//附件，可以定义多个附件对象
public class MailDemo ...{
public static void main(String[] args) ...{
EmailAttachment attachment = new EmailAttachment();
attachment.setPath("e:/1.pdf");
attachment.setDisposition(EmailAttachment.ATTACHMENT);
attachment.setDescription("Picture of John");
HtmlEmail email = new HtmlEmail();
try ...{
//smtp host
email.setHostName("mail.test.com");
//登陆邮件服务器的用户名和密码
email.setAuthentication("test","testpassword");
//接收人
email.addTo("jdoe@somewhere.org", "John Doe");
//发送人
email.setFrom("me@apache.org", "Me");
//标题
email.setSubject("Test message");
//邮件内容
email.setHtmlMsg("<b>This is a simple test of commons-email</b>");
//添加附件
email.attach(attachment);
//发送
email.send();
} catch (Exception e) ...{
e.printStackTrace();
}
}
}
public class MailDemo ...{ public static void main(String[] args) ...{ EmailAttachment attachment = new EmailAttachment(); attachment.setPath("e:/1.pdf"); attachment.setDisposition(EmailAttachment.ATTACHMENT); attachment.setDescription("Picture of John"); HtmlEmail email = new HtmlEmail(); try ...{ //smtp host email.setHostName("mail.test.com"); //登陆邮件服务器的用户名和密码 email.setAuthentication("test","testpassword"); //接收人 email.addTo("jdoe@somewhere.org", "John Doe"); //发送人 email.setFrom("me@apache.org", "Me"); //标题 email.setSubject("Test message"); //邮件内容 email.setHtmlMsg("<b>This is a simple test of commons-email</b>"); //添加附件 email.attach(attachment); //发送 email.send(); } catch (Exception e) ...{ e.printStackTrace(); } }}感觉经常会用到，先收藏起来。