Apache Commons Email使用心得详解编程语言

最近在项目中开发中需要用到发送邮件功能，当后台定时任务处理完毕后通知调用者。Java Mail API使用比较麻烦，所以这里采用的是Apache Commons Email，官网地址：http://commons.apache.org/proper/commons-email/，Commons Email API比较简洁高效，学习起来也很快。写篇文章跟大家分享一下，有问题的可以留言！

1、发送简单文本邮件

Email email = new SimpleEmail(); 

email.setHostName("smtp.googlemail.com"); 

email.setSmtpPort(465); 

email.setAuthenticator(new DefaultAuthenticator("username", "password")); 

email.setSSLOnConnect(true); 

email.setFrom("[email protected]"); 

email.setSubject("TestMail"); 

email.setMsg("This is a test mail ... :-)"); 

email.addTo("[email protected]"); 

email.send();

2、发送带附件的邮件

// Create the attachment 

 EmailAttachment attachment = new EmailAttachment(); 

 attachment.setPath("mypictures/john.jpg"); 

 attachment.setDisposition(EmailAttachment.ATTACHMENT); 

 attachment.setDescription("Picture of John"); 

 attachment.setName("John"); 

 // Create the email message 

 MultiPartEmail email = new MultiPartEmail(); 

 email.setHostName("mail.myserver.com"); 

 email.addTo("[email protected]", "John Doe"); 

 email.setFrom("[email protected]", "Me"); 

 email.setSubject("The picture"); 

 email.setMsg("Here is the picture you wanted"); 

 // add the attachment 

 email.attach(attachment); 

 // send the email 

 email.send();

另外还可以通过任意的链接来将网络上的文件添加到附件中，例如：

// Create the attachment 

 EmailAttachment attachment = new EmailAttachment(); 

 attachment.setURL(new URL("http://www.apache.org/images/asf_logo_wide.gif")); 

 attachment.setDisposition(EmailAttachment.ATTACHMENT); 

 attachment.setDescription("Apache logo"); 

 attachment.setName("Apache logo"); 

 // Create the email message 

 MultiPartEmail email = new MultiPartEmail(); 

 email.setHostName("mail.myserver.com"); 

 email.addTo("[email protected]", "John Doe"); 

 email.setFrom("[email protected]", "Me"); 

 email.setSubject("The logo"); 

 email.setMsg("Here is Apaches logo"); 

 // add the attachment 

 email.attach(attachment); 

 // send the email 

 email.send();

3、发送HTML格式的邮件

// Create the email message 

 HtmlEmail email = new HtmlEmail(); 

 email.setHostName("mail.myserver.com"); 

 email.addTo("[email protected]", "John Doe"); 

 email.setFrom("[email protected]", "Me"); 

 email.setSubject("Test email with inline image"); 

 // embed the image and get the content id 

 URL url = new URL("http://www.apache.org/images/asf_logo_wide.gif"); 

 String cid = email.embed(url, "Apache logo"); 

 // set the html message 

 email.setHtmlMsg(" html The apache logo - img src=/"cid:"+cid+"/" /html 

 // set the alternative message 

 email.setTextMsg("Your email client does not support HTML messages"); 

 // send the email 

 email.send();

4、发送带图片的HTML格式邮件

// load your HTML email template 

 String htmlEmailTemplate = .... 

 // define you base URL to resolve relative resource locations 

 URL url = new URL("http://www.apache.org"); 

 // create the email message 

 HtmlEmail email = new ImageHtmlEmail(); 

 email.setDataSourceResolver(new DataSourceResolverImpl(url)); 

 email.setHostName("mail.myserver.com"); 

 email.addTo("[email protected]", "John Doe"); 

 email.setFrom("[email protected]", "Me"); 

 email.setSubject("Test email with inline image"); 

 // set the html message 

 email.setHtmlMsg(htmlEmailTemplate); 

 // set the alternative message 

 email.setTextMsg("Your email client does not support HTML messages"); 

 // send the email 

 email.send();

另外，在使用过程中发现Email.addTo一次只能添加一个联系人，如果想发送给多个人的话，需要使用for循环嵌套来实现，以下是一个简单的例子：

public static void main(String[] args){ 

 String mailList = "[email protected];[email protected]"; 

 String[] list = mailList.split(";"); 

 for(int i=0;list!=null i list.length;i++){ //嵌套调用 

 sendEmail(list[i]); 

 public static void sendEmail(String target) { 

 try{ 

 Email email = new SimpleEmail(); 

 email.setHostName("smtp.163.com"); 

 email.setSmtpPort(465); 

 email.setAuthenticator(new DefaultAuthenticator("[email protected]","abc")); 

 email.setSSLOnConnect(true); 

 email.setFrom("[email protected]"); 

 email.addTo(target); 

 email.setSubject("Test Mail"); 

 email.setMsg("This is a test mail"); 

 email.send(); 

 }catch (Exception e){ 

 e.printStackTrace(); 

详细教程可以参考官网UserGuide，链接：http://commons.apache.org/proper/commons-email/userguide.html

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