java发送邮件,以qq邮件示例(注册激活用户)
import com.sun.mail.util.MailSSLSocketFactory; import java.security.GeneralSecurityException; import java.util.Properties; import javax.mail.Authenticator; import javax.mail.Message; import javax.mail.Message.RecipientType; import javax.mail.MessagingException; import javax.mail.PasswordAuthentication; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.AddressException; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; /** * 邮件发送工具类 * * @author menglinjie */ public class MailUitls { /** * 发送邮件的方法 * * @param to :收件人 * @param code :激活码 */ public static void sendMail(String to, int code) { /** * 1.获得一个Session对象. * 2.创建一个代表邮件的对象Message. * 3.发送邮件Transport */ // 1.获得连接对象 Properties props = new Properties(); props.setProperty("mail.debug", "true"); props.setProperty("mail.host", "smtp.qq.com"); // 发送服务器需要身份验证 props.setProperty("mail.smtp.auth", "true"); // 发送邮件协议名称 props.setProperty("mail.transport.protocol", "smtp"); MailSSLSocketFactory sf = null; try { sf = new MailSSLSocketFactory(); } catch (GeneralSecurityException e) { e.printStackTrace(); } sf.setTrustAllHosts(true); props.put("mail.smtp.ssl.enable", "true"); props.put("mail.smtp.ssl.socketFactory", sf); Session session = Session.getInstance(props, new Authenticator() { @Override protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication("xxxx@qq.com", "xxxxxx");//你自己的邮件地址及密码(或邮箱POP3密码) } }); // 2.创建邮件对象: Message message = new MimeMessage(session); // 设置发件人:你自己的邮件地址及密码 try { message.setFrom(new InternetAddress("xxxx@qq.com")); // 设置收件人: message.addRecipient(RecipientType.TO, new InternetAddress(to)); // 抄送 CC 密送BCC // 设置标题 message.setSubject("来自官方激活邮件"); // 设置邮件正文: message.setContent("", "text/html;charset=UTF-8"); // 3.发送邮件: Transport.send(message); } catch (AddressException e) { e.printStackTrace(); } catch (MessagingException e) { e.printStackTrace(); } } }
要发送qq邮件,必须开启POP3/SMTP服务
QQ邮箱–设置–账户–POP3/IMAP/SMTP/Exchange/CardDAV/CalDAV服务–开启POP3/SMTP服务
然后上面会有POP3密码
可用于用户注册激活操作