前言

借用hutool工具，实现多账号发送邮件

相关实现

maven依赖

Hutool对所有第三方都是可选依赖，因此在使用MailUtil时需要自行引入第三方依赖。

cn.hutoolhutool-all5.7.15
com.sun.mailjavax.mail1.6.2

简化需求场景

由于hutool中MailAccount没有合适得构造方法构建对象，我就创建了一个子类MailAccountSon继承MailAccount

在构建MailAccountSon时并构建MailAccount的相关属性值

当然你可以直接new MailAccount()，但是我觉得麻烦并且和账户耦合度很高

官方：

除了使用配置文件定义全局账号以外，MailUtil.send方法同时提供重载方法可以传入一个MailAccount对象，这个对象为一个普通Bean，记录了邮件服务器信息。

MailAccount account = new MailAccount();
account.setHost("smtp.yeah.net");
account.setPort("25");
account.setAuth(true);
account.setFrom("hutool@yeah.net");
account.setUser("hutool");
account.setPass("q1w2e3");MailUtil.send(account, CollUtil.newArrayList("hutool@foxmail.com"), "测试", "邮件来自Hutool测试", false);

 talk is cheap，look my code！

代码实现

MailAccountSon类，其中的构造方法根据需求添加，如果你是企业邮箱，参考hutool定义对应的构造函数

/*** @author Xuewei.Zhang* @date 2022/11/24*/
public class MailAccountSon extends MailAccount {public MailAccountSon(String host, Integer port, Boolean auth, String from, String user, String pass) {super.setHost(host);super.setPort(port);super.setAuth(auth);super.setFrom(from);super.setUser(user);super.setPass(pass);}public MailAccountSon(String host, Integer port, Boolean auth, String from, String pass) {super.setHost(host);super.setPort(port);super.setAuth(auth);super.setFrom(from);super.setPass(pass);}public MailAccountSon(String from, String pass) {super.setFrom(from);super.setPass(pass);}
}

SYS_EMAIL_MAP里面存放了我多个邮件账号实例，我将使用他们发送邮件

public interface SysConstants {String EMAIL_126 = "126";String EMAIL_qq = "qq";// 邮件服务器Map SYS_EMAIL_MAP = new HashMap() {{put(EMAIL_126,new MailAccountSon("zhangxuewei0303@126.com","CTLTO***K****J") );put(EMAIL_qq,new MailAccountSon("2289998609@qq.com","rp****oo***bhj") );}};}

测试QQ

    public static void main(String[] args) {MailAccount mailAccount = SysConstants.SYS_EMAIL_MAP.get(SysConstants.EMAIL_qq);String msg = MailUtil.send(mailAccount, CollUtil.newArrayList("1263944101@qq.com"), "测试", "邮件来自erp_cloud测试", false);log.info(msg);}

打印信息

Connected to the target VM, address: '127.0.0.1:13216', transport: 'socket'
16:57:58.834 [main] INFO com.zxw.common.web.util.EmailUtil - <2040352617.1.1669280277966@LAPTOP-ORGH9L27.mshome.net>
Disconnected from the target VM, address: '127.0.0.1:13216', transport: 'socket'

测试126

    public static void main(String[] args) {MailAccount mailAccount = SysConstants.SYS_EMAIL_MAP.get(SysConstants.EMAIL_126);String msg = MailUtil.send(mailAccount, CollUtil.newArrayList("1263944101@qq.com"), "测试", "邮件来自erp_cloud测试", false);log.info(msg);}

打印信息

Connected to the target VM, address: '127.0.0.1:1431', transport: 'socket'
17:18:13.025 [main] INFO com.zxw.common.web.util.EmailUtil - <2040352617.1.1669281492247@LAPTOP-ORGH9L27.mshome.net>
Disconnected from the target VM, address: '127.0.0.1:1431', transport: 'socket'