java achieve user registration activation mail verification

Function: registered successfully sends activation email to the mailbox by registered mail account. It prompts the user to log mailbox accounts activated in order to use the account.

Process: essentially new user data to a table, user table stored in the code field should have a random string. adding random code generated when a user (UUID), sending mail messages linked to the value of the code used to find the unique account, then the user is determined state, activation.

Specific achieve the following:

First, add maven send a message needed here is javax.mail

	<dependency>
			<groupId>javax.mail</groupId>
			<artifactId>mail</artifactId>
			<version>1.4.7</version>
		</dependency>
		<dependency>
			<groupId>javax.activation</groupId>
			<artifactId>activation</artifactId>
			<version>1.1.1</version>
		</dependency>

Two, application of the configuration mail

Here the test used qq-mail on how to obtain a license key, please click here: to obtain an authorization code

Three, MailConfig loading configuration corresponding to the class

package com.weavewan.sdwan.user.config;

import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

/**
 * @author wshanshi
 * @version 1.0
 * @date 2020/2/12 10:32
 */
@Data
@Component
@ConfigurationProperties(prefix = "mail.config")
public class MailConfig {

    // 指定发送邮件的主机
    private String host;

    // 邮件服务器
    private String mailService;

    // 认证
    private String auth;

    // 发件人邮箱账号
    private String sender;

    // 授权码
    private String code;

    private String sslEnable;

    private String sslSocketFactory;

}

Four, Mail Tools

package com.weavewan.sdwan.user.util;

import com.sun.mail.util.MailSSLSocketFactory;
import com.weavewan.sdwan.user.config.MailConfig;
import org.springframework.context.ApplicationContext;

import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.util.Properties;

/**
 * 邮件发送类
 *
 * @author wshanshi
 * @version 1.0
 * @date 2020/2/8 13:57
 */
public class MailUtil {

    private ApplicationContext applicationContext = SpringUtils.getApplicationContext();
    private MailConfig mailConfig = applicationContext.getBean(MailConfig.class);

    private String email;// 收件人邮箱
    private String code;// 激活码

    public MailUtil(String email, String code) {
        this.email = email;
        this.code = code;
    }

    public void run(String subject, String content) {

        // 创建连接对象javax.mail.Session
        // 创建邮件对象 javax.mail.Message
        // 发送一封激活邮件

        String sender = mailConfig.getSender();// 发件人电子邮箱
        String host = mailConfig.getHost(); // 指定发送邮件的主机smtp.qq.com(QQ)|smtp.163.com(网易)

        Properties properties = System.getProperties();// 获取系统属性

        properties.setProperty(mailConfig.getMailService(), host);// 设置邮件服务器
        properties.setProperty(mailConfig.getAuth(), "true");// 打开认证

        try {
            // QQ邮箱需要下面这段代码，163邮箱不需要
            MailSSLSocketFactory sf = new MailSSLSocketFactory();
            sf.setTrustAllHosts(true);
            properties.put(mailConfig.getSslEnable(), "true");
            properties.put(mailConfig.getSslSocketFactory(), sf);

            // 获取默认session对象
            Session session = Session.getDefaultInstance(properties, new Authenticator() {
                public PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication(sender, mailConfig.getCode()); // 发件人邮箱账号、授权码
                }
            });

            // 创建邮件对象
            Message message = new MimeMessage(session);

            // 设置发件人
            message.setFrom(new InternetAddress(sender));

            // 设置接收人
            message.addRecipient(Message.RecipientType.TO, new InternetAddress(email));

            // 设置邮件主题
            message.setSubject(subject);

            // 设置邮件内容
            message.setContent(content, "text/html;charset=UTF-8");

            // 发送邮件
            Transport.send(message);
            System.out.println("邮件成功发送!");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Fifth, the call to send a message

= New new MailUtil mailUtil MailUtil (email.getS (), code.getS ());
mailUtil configuration parameters are two: the recipient's mailbox (mailbox user), a random code authentication code (uuid).

The effect is as follows:

Annex: generating a UUID

UUID uuid = UUID.randomUUID();
String str = uuid.toString();
String uuidStr = str.replace("-", "");