注册成功邮箱发送邮件并激活

发邮件的工具类

import java.util.Properties;
import javax.mail.Authenticator;
import javax.mail.Message;
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;
import javax.mail.internet.MimeMessage.RecipientType;

public class MailUtils {

    public static void sendMail(String email, String emailMsg)
            throws AddressException, MessagingException {
        // 1.创建一个程序与邮件服务器会话对象 Session

        Properties props = new Properties();
        props.setProperty("mail.transport.protocol", "SMTP");
        props.setProperty("mail.host", "smtp.126.com");
        props.setProperty("mail.smtp.auth", "true");// 指定验证为true

        // 创建验证器
        Authenticator auth = new Authenticator() {
            public PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("hysteria_7", "hysteria7");//发送者邮箱  发送者授权码  一般为公司的公共邮箱
            }
        };

        Session session = Session.getInstance(props, auth);

        // 2.创建一个Message，它相当于是邮件内容
        Message message = new MimeMessage(session);

        message.setFrom(new InternetAddress("hysteria_7@126.com")); // 设置发送者

        message.setRecipient(RecipientType.TO, new InternetAddress(email)); // 设置发送方式与接收者

        message.setSubject("用户激活");
        // message.setText("这是一封激活邮件，请<a href='#'>点击</a>");

        message.setContent(emailMsg, "text/html;charset=utf-8");

        // 3.创建 Transport用于将邮件发送

        Transport.send(message);
    }
}

需要用到的jar

mail.jar

使用：

//发送邮件
String emailMsg = "恭喜您注册成功，请点击下面的链接进行激活账户" +
        "<a href='http://localhost:8080/YShop/active?activeCode="+ activeCode +"'>" +
                "http://localhost:8080/YShop/active?activeCode="+ activeCode +"</a>";
try {
    MailUtils.sendMail(user.getEmail(), emailMsg);
} catch (MessagingException e) {
    e.printStackTrace();
}

//activeCode 为用户注册时后台自动赋值的一个UUID 为了点击激活时做匹配用

　//private String code;//激活码
　String activeCode = CommonUtil.getUUID();
　user.setCode(activeCode);

 紫色的地址可以写成公网的IP 这样外网上也可以激活（测试是在本地）

效果： UUID

激活代码：

//1.获得激活码

Servlet层:
String activeCode = request.getParameter("activeCode");

UserService service = new UserService();
service.active(activeCode);

service层
UserDao dao = new UserDao();
try {
    dao.active(activeCode);
} catch (SQLException e) {
    e.printStackTrace();
}

dao层
QueryRunner runner = new QueryRunner(DataSourceUtils.getDataSource());
String sql = "update user set state=? where code=?";
runner.update(sql, 1,activeCode);//设置激活状态为1