Java实现邮件发送

设置

开启服务，生成授权码

下载jar包

JavaMail mail.jar 1.4.5JAF（版本 1.1.1） activation.jar

简单E-mail

package test;

import com.sun.mail.util.MailSSLSocketFactory;

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

public class SendEmail {
    public static void main(String [] args) throws GeneralSecurityException {
        // 收件人电子邮箱
        String to = "wwh_work@126.com";

        // 发件人电子邮箱
        String from = "1123796396@qq.com";

        // 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);

        // 用户认证
        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("1123796396@qq.com", "qzwwoxxxxxxjjji"); //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("这是一封测试邮件");

            // 设置消息体
            message.setText("里面包含着我对你的爱");

            // 发送消息
            Transport.send(message);
            System.out.println("邮件已经成功送达" + to);
        }catch (MessagingException mex) {
            mex.printStackTrace();
        }
    }
}

成功发送：

HTML E-mail

package test;

import com.sun.mail.util.MailSSLSocketFactory;

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

public class SendHtmlEmail {
    public static void main(String [] args) throws GeneralSecurityException {
        // 收件人电子邮箱
        String to = "wwh_work@126.com";

        // 发件人电子邮箱
        String from = "1123796396@qq.com";

        // 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);

        // 用户认证
        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("1123796396@qq.com", "qzwwoxxxxxxojjji"); //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("这是一封测试邮件");

            // 发送 HTML 消息提，可以插入 HTML 标签。小心此处的汉语编码格式不正确
            message.setContent("苍茫的天涯是我的爱",
                    "text/html;charset=utf-8");

            // 发送消息
            Transport.send(message);
            System.out.println("邮件已经成功送达" + to);
        }catch (MessagingException mex) {
            mex.printStackTrace();
        }
    }
}

成功发送：

带有附件的E-mail

package test;

import com.sun.mail.util.MailSSLSocketFactory;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.*;
import javax.mail.internet.*;
import java.io.UnsupportedEncodingException;
import java.security.GeneralSecurityException;
import java.util.Properties;

public class SendFileEmail {
    public static void main(String [] args) throws GeneralSecurityException {
        // 收件人电子邮箱
        String to = "wwh_work@126.com";

        // 发件人电子邮箱
        String from = "1123796396@qq.com";

        // 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);

        // 用户认证
        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("1123796396@qq.com", "qzwwoxxxxxxjjji"); //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("这是一封测试邮件");

            // 创建消息部分
            BodyPart messageBodyPart = new MimeBodyPart();

            // 消息
            messageBodyPart.setText("This is message body");

            // 创建多重消息
            Multipart multipart = new MimeMultipart();

            // 设置文本消息部分
            multipart.addBodyPart(messageBodyPart);

            // 附件部分
            messageBodyPart = new MimeBodyPart();
            String filename = "C:\Users\Administrator\Desktop\新建 XLS 工作表.xls";
            DataSource source = new FileDataSource(filename);
            messageBodyPart.setDataHandler(new DataHandler(source));
            messageBodyPart.setFileName(MimeUtility.encodeText(filename));// 文件名称乱码
            multipart.addBodyPart(messageBodyPart);

            // 发送完整消息
            message.setContent(multipart );

            // 发送消息
            Transport.send(message);
            System.out.println("邮件已经成功送达" + to);
        }catch (MessagingException | UnsupportedEncodingException mex) {
            mex.printStackTrace();
        }
    }
}

成功发送：

预览文件：

Java实现邮件发送

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