用JavaMail发送邮件(含实例)
JavaMail是Sun发布的处理电子邮件的应用程序接口，它预置了一些最常用的邮件传送协议的实现方法，并且提供了很容易的方法去调用它们。JavaMail是Sun发布的应用程序接口，所以目前它还没有被JDK包含。因此你需要从Sun的官方网站上下载到JavaMail类文件包。除此之外还需要Sun的JAF(JavaBeans Activation Framework )，否则JavaMail将不能运行。
核心JavaMail API 由七个类组成：Session 、Message 、Address 、Authenticator 、Transport 、Store 及 Folder ，它们都来自javax.mail 、即JavaMail API 顶级包。可以用这些类完成大量常见的电子邮件任务，包括发送消息、检索消息、删除消息、认证、回复消息、转发消息、管理附件、处理基于HTML文件格式的消息以及搜索或过滤邮件列表。
测试邮件发送的源代码:
import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Properties; import java.util.Date; import javax.mail.*; import javax.mail.internet.*; /* * 测试用JavaMail发送电子邮件 */ public class SendMail { private String from; private String to; private String smtpServer; private String subject; private String content; private String username; private String password; /* * 构造函数 */ public void mail(String smtpServer,String from,String to,String username,String password,String subject,String content) { this.smtpServer = smtpServer; this.from = from; this.to = to; this.username = username; this.password = password; this.subject = subject; this.content = content; } public String getFrom() { return from; } public void setFrom(String from) { this.from = from; } public String getTo() { return to; } public void setTo(String to) { this.to = to; } public String getSmtpServer() { return smtpServer; } public void setSmtpServer(String smtpServer) { this.smtpServer = smtpServer; } public String getSubject() { return subject; } public void setSubject(String subject) { this.subject = subject; } public String getContent() { return content; } public void setContent(String content) { this.content = content; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public void send() { Properties props = System.getProperties(); props.put("mail.smtp.host", smtpServer); props.put("mail.smtp.auth", "true"); /* * Session: 邮件会话 * 使用Session类提供的getDefaultInstance()静态工厂方法获得一个默认的Session对象 */ Session session = Session.getDefaultInstance(props,new PasswordAuthenticator(username, password)); //信息对象 Message msg = new MimeMessage(session); try { msg.setFrom(new InternetAddress(from)); msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to, false)); msg.setSubject(subject); msg.setText(content); //发送邮件的时间 msg.setSentDate(new Date()); //邮件的发送是由Transport来完成的 Transport.send(msg); } catch (AddressException e) { e.printStackTrace(); } catch (MessagingException e) { e.printStackTrace(); } } public static void main(String[] argv) { SendMail sendMail = new SendMail(); //设置SMTP服务器地址 sendMail.setSmtpServer("smtp.sina.com"); //发送方的邮件地址 sendMail.setFrom("[email=[ft=,2,]zhangxuey@sina.com]zhangxueyi@sina.com[/email]"); //接收方的邮件地址 sendMail.setTo("[email=[ft=,2,]623064832@qq.com]623064832@qq.com[/email]"); //发送方的邮件名称 sendMail.setUsername("[email=[ft=,2,]zhangxueyi@sina.com]zhangxueyi@sina.com[/email]"); //发送方的邮箱密码(根据情况自己设定) sendMail.setPassword("******"); //邮件的主题 sendMail.setSubject("测试"); //邮件的内容 sendMail.setContent("测试用JavaMail发送电子邮件!"); sendMail.send(); } } /* * 密码验证类 PasswordAuthenticator * @param username:邮件地址 * @param password:密码 */ class PasswordAuthenticator extends Authenticator { private String username; private String password; public PasswordAuthenticator(String username, String password) { this.username = username; this.password = password; }//构造方法 protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(username, password); } }