使用java发送邮箱

• 以qq邮箱为例说明发送邮箱

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导包

<!-- 发送邮件 -->        <dependency>            <groupId>com.sun.mail</groupId>            <artifactId>javax.mail</artifactId>            <version>1.6.0</version>        </dependency>    </dependencies>

qq邮箱开启POP3/SMTP服务

设置-.>账户->POP3/IMAP/SMTP/Exchange/CardDAV/CalDAV服务
开启POP3/SMTP服务
生成授权码后将授权码保存，后面会用

代码

package com.spring.until;import java.security.GeneralSecurityException;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.InternetAddress;import javax.mail.internet.MimeMessage;import com.sun.mail.util.MailSSLSocketFactory;public class SendEmail {    public static boolean send(String email,String title,String body) throws GeneralSecurityException     {        // 收件人电子邮箱        String to = email;        // 发件人电子邮箱        String from =  PropertiesUntil.Properties("account");        // 指定发送邮件的主机为 smtp.qq.com        String host = "smtp.qq.com";  //QQ 邮件服务器        // 获取系统属性        Properties properties = System.getProperties();        // 设置邮件服务器        properties.setProperty("mail.smtp.host", host);        properties.put("mail.smtp.auth", "true");        MailSSLSocketFactory sf = new MailSSLSocketFactory();        sf.setTrustAllHosts(true);        properties.put("mail.smtp.ssl.enable", "true");        properties.put("mail.smtp.ssl.socketFactory", sf);        // 获取默认session对象        Session session = Session.getDefaultInstance(properties,new Authenticator(){            public PasswordAuthentication getPasswordAuthentication()            {                return new PasswordAuthentication( PropertiesUntil.Properties("account"),  PropertiesUntil.Properties("password")); //发件人邮件用户名、密码            }        });        try{            // 创建默认的 MimeMessage 对象            MimeMessage message = new MimeMessage(session);            // Set From: 头部头字段            message.setFrom(new InternetAddress(from));            // Set To: 头部头字段            message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));            // Set Subject: 头部头字段            message.setSubject(title);            // 设置消息体            message.setText(body);            // 发送消息            Transport.send(message);            return true;        }catch (MessagingException mex) {            return false;        }    }}

PropertiesUntil.Properties(“account”) 发送人邮箱账号
PropertiesUntil.Properties(“password”) 发送人邮件密码，注意是刚刚生成的
授权码
String email,String title,String body 三个参数分别为收件人邮箱，标题，正文