Java實現郵箱驗證碼

前言　　

　　相比於java實現短信驗證碼，郵箱驗證碼就簡單了許多，目前只是簡單的利用java發送自定義內容至指定郵箱，等過幾天再弄短信和郵箱驗證碼Web版本的。查詢網上資料，得知相比於網易郵箱，QQ郵箱是最麻煩的，而且平時我個人使用的也是QQ郵箱，所以也是選擇了QQ郵箱。

配置協議

　　1.首先，我們需要打開發送方的QQ郵箱，也就是你的郵箱，點擊上方的設置。

 　　進入之后，點擊賬戶，下滑至POP3/IMAP/SMTP/Exchange/CardDAV/CalDAV服務，將POP3/SMTP服務打開即可

 　　開啟服務之后，會獲得一個授權碼，把它記下來，后面寫代碼的時候會用的到。

代碼實現（黃色部分需修改為自己數據）

　　Mail_Java.java:

package util;

import java.util.Properties;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import com.sun.mail.util.MailSSLSocketFactory;

/**
 * JavaMail發送郵件: java版本-與web無關
 * 前提是QQ郵箱里帳號設置要開啟POP3/SMTP協議
 * 
 * 
 */
public class Mail_java {
    public static void main(String[] args) throws Exception {
        Properties prop = new Properties();
        // 開啟debug調試，以便在控制台查看
        prop.setProperty("mail.debug", "true");
        // 設置郵件服務器主機名
        prop.setProperty("mail.host", "smtp.qq.com");
        // 發送服務器需要身份驗證
        prop.setProperty("mail.smtp.auth", "true");
        // 發送郵件協議名稱
        prop.setProperty("mail.transport.protocol", "smtp");
        // 開啟SSL加密，否則會失敗
        MailSSLSocketFactory sf = new MailSSLSocketFactory();
        sf.setTrustAllHosts(true);
        prop.put("mail.smtp.ssl.enable", "true");
        prop.put("mail.smtp.ssl.socketFactory", sf);
        // 創建session
        Session session = Session.getInstance(prop);
        // 通過session得到transport對象
        Transport ts = session.getTransport();
        // 連接郵件服務器：郵箱類型，帳號，POP3/SMTP協議授權碼 163使用：smtp.163.com
        ts.connect("smtp.qq.com", "發送方的QQ號", "POP3/SMTP協議授權碼");
        // 創建郵件
        Message message = createSimpleMail(session);
        // 發送郵件
        ts.sendMessage(message, message.getAllRecipients());
        ts.close();
    }

    /**
     * @Method: createSimpleMail
     * @Description: 創建一封只包含文本的郵件
     */
    public static MimeMessage createSimpleMail(Session session) throws Exception {
            //  獲取6為隨機驗證碼
            String[] letters = new String[] {
                    "q","w","e","r","t","y","u","i","o","p","a","s","d","f","g","h","j","k","l","z","x","c","v","b","n","m",
                    "A","W","E","R","T","Y","U","I","O","P","A","S","D","F","G","H","J","K","L","Z","X","C","V","B","N","M",
                    "0","1","2","3","4","5","6","7","8","9"};
            String stringBuilder ="";
            for (int i = 0; i < 6; i++) {
                stringBuilder = stringBuilder + letters[(int)Math.floor(Math.random()*letters.length)];
            }
        
        // 創建郵件對象
        MimeMessage message = new MimeMessage(session);
        // 指明郵件的發件人
        message.setFrom(new InternetAddress("發送方[e-mail]"));
        // 指明郵件的收件人，發件人和收件人如果是一樣的，那就是自己給自己發
        message.setRecipient(Message.RecipientType.TO, new InternetAddress("接受方[e-mail]"));
        // 郵件的標題
        message.setSubject("JavaMail測試");
        // 郵件的文本內容
        message.setContent("歡迎您注冊【OG高玩會】,賬號注冊驗證碼為(一分鍾有效):"+stringBuilder+",請勿回復此郵箱", "text/html;charset=UTF-8");
        
        // 返回創建好的郵件對象
        return message;
    }
}

所需jar包　　

　　鏈接：https://pan.baidu.com/s/14PvQvB4hUBUrrk-uTus_6w
　　提取碼：xeg3