JavaEE send mail|JavaWeb code send mail|Tomcat mail log|Server Tomcat mail monitoring

1. Import Jar package or maven dependency

The javax.mail-1.5.1.jar package is in the network disk: https://wwa.lanzous.com/ijjBDe7t8cf

pom dependency

under spring

<dependency>
 <groupId>javax.activation</groupId>
 <artifactId>activation</artifactId>
 <version>1.1</version>
</dependency>
<dependency>
 <groupId>javax.mail</groupId>
 <artifactId>mail</artifactId>
 <version>1.4</version>
</dependency>

springboot下

<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-mail</artifactId>
</dependency>

2. Log in to the mailbox, start the POP3 service, and obtain an authorization code

3. Write configuration file

Write configuration file

#你的网页使用的邮箱
[email protected]
#开启POP3时获取的那个授权码
emailPwd=XXXXXXXXXXXXXX
#邮箱的smtp服务器
emailHost=smtp.163.com
#是否使用密码认证
emailAuth=true
#通信协议
emailProtocol=smtp
#通信端口号
emailPort=25

POP3 server and port of common mailbox

网易163邮箱
POP3：pop.163.com
SMTP：smtp.163.com
SMTP端口号：25 
 
网易vip.163邮箱
POP3：pop.vip.163.com
SMTP：smtp.vip.163.com
SMTP端口号：25  

QQ邮箱
POP3：pop.qq.com
SMTP：smtp.qq.com
SMTP端口号：25
 
 
网易126邮箱
POP3：pop.126.com
SMTP：smtp.126.com
SMTP端口号：25 
 
网易188邮箱
POP3：pop.188.com
SMTP：smtp.188.com
SMTP端口号：25 
 
网易yeah.net邮箱
POP3：pop.yeah.net
SMTP：smtp.yeah.net
SMTP端口号：25 
 
新浪免费邮箱
POP3：pop.sina.com
SMTP：smtp.sina.com
SMTP端口号：25
 
新浪VIP邮箱
POP3：pop3.vip.sina.com
SMTP：smtp.vip.sina.com
SMTP端口号：25
 
新浪企业邮箱
POP3：pop.sina.com
SMTP：smtp.sina.com
SMTP端口号：25
 
雅虎邮箱
POP3：pop.mail.yahoo.cn
SMTP：smtp.mail.yahoo.cn
SMTP端口号：25
 
搜狐邮箱
POP3：pop3.sohu.com
SMTP：smtp.sohu.com
SMTP端口号：25
 
TOM邮箱
POP3：pop.tom.com
SMTP：smtp.tom.com
SMTP端口号：25
 
Gmail邮箱
POP3：pop.gmail.com
SMTP：smtp.gmail.com
SMTP端口号：587 或 25

4. Tools for sending emails

import javax.mail.Address;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.io.FileReader;
import java.util.Properties;

public class SendJMail {

	/**
	 *
	 * @param to	收件人
	 * @param emailMsg  右键内容
	 * @return
	 */
	public static boolean sendMail(String to, String emailMsg) {
		
		try {
			//实例化配置文件
			Properties p = new Properties();
			p.load(new FileReader("mail.properties"));
			//读取配置数据
			String emailUser = p.getProperty("emailUser");
			String emailPwd = p.getProperty("emailPwd");
			String emailHost = p.getProperty("emailHost");
			String emailAuth = p.getProperty("emailAuth");
			String emailProtocol = p.getProperty("emailProtocol");
			int emailPort = Integer.parseInt(p.getProperty("emailPort"));
			
			//获取系统环境信息
			Properties props = System.getProperties();
			//设置邮件服务器
			props.setProperty("mail.smtp.host", emailHost); 
			//设置密码认证
			props.setProperty("mail.smtp.auth", emailAuth);
			//设置传输协议
			props.setProperty("mail.transport.protocol", emailProtocol);
			//创建session对象
			Session session = Session.getInstance(props);
			//设置输出日志
			session.setDebug(true);
			
			//邮件发送对象
			MimeMessage message = new MimeMessage(session);
			//设置发件人
			message.setFrom(new InternetAddress(emailUser));
			//设置邮件主题
			message.setSubject("HelloWorld");
			//设置邮件内容
			message.setText("First POP3 mail!!!");
			//如果带网页内容使用Content发送
			message.setContent((emailMsg),"text/html;charset=utf-8");
 
			//获取邮件发送管道
			Transport transport=session.getTransport();
			//连接管道
			transport.connect(emailHost,emailPort, emailUser, emailPwd);
			//发送邮件
			transport.sendMessage(message,new Address[]{new InternetAddress(to)});
			//关闭管道
			transport.close();
			return true;
		}
		catch (Exception e) {
			e.printStackTrace();
			return false;
		}
	}

	public static void main(String[] args) {
		sendMail("[email protected]","123");
	}
}

5. Test

Right-click test run