本篇内容介绍了“Java如何实现简单邮件发送功能”的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！
需要的jar包:
activation-1.1.1.jar
mail-1.4.7.jar
QQ邮箱设置开启POP3/SMTP服务,并获得授权码
java实现简单邮件发送
import com.sun.mail.util.MailSSLSocketFactory;import javax.mail.*;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeMessage;import java.util.Properties;public class Mail1 { public static void main(String[] args) throws Exception { //要发送邮件,需要获得协议和支持!开启服务POP3/SMTP服务 授权码: fsxqgovorymigfeb Properties prop=new Properties(); prop.setProperty("mail.host","smtp.qq.com");//设置QQ邮件服务器 prop.setProperty("mail.transport.protocol","smtp");//设置邮箱发送协议 prop.setProperty("mail.smtp.auth","true");//需要验证用户名密码 //QQ邮箱还有设置SSL加密 MailSSLSocketFactory sf=new MailSSLSocketFactory(); sf.setTrustAllHosts(true); prop.put("mail.smtp.ssl.enable","true"); prop.put("mail.smtp.ssl.socketFactory",sf); //1.创建定义整个应用程序所需要的环境信息的Session对象 Session session=Session.getDefaultInstance(prop, new Authenticator() { @Override protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication("1369410772@qq.com","fsxqgovorymigfeb"); } }); //开启session的debug模式,这样就可以查看运行状态了 session.setDebug(true); //2.通过session对象获得transport对象 Transport transport = session.getTransport(); //3.使用邮箱的用户名和授权码连上邮件服务器 transport.connect("smtp.qq.com","1369410772@qq.com","fsxqgovorymigfeb"); //4.创建邮件:写邮件 MimeMessage message = new MimeMessage(session); message.setFrom(new InternetAddress("1369410772@qq.com"));//发件人 message.setRecipient(Message.RecipientType.TO,new InternetAddress("1369410772@qq.com"));//收件人 message.setSubject("你好");//邮件主题 message.setContent("<h2 style='color: red'>你好</h2>","text/html;charset=utf-8");//邮件内容 //5.发送邮件 transport.sendMessage(message,message.getAllRecipients()); //6.关闭连接 transport.close(); }}java实现复杂邮件发送( 带文件 )
import com.sun.mail.util.MailSSLSocketFactory;import javax.activation.DataHandler;import javax.activation.FileDataSource;import javax.mail.*;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeBodyPart;import javax.mail.internet.MimeMessage;import javax.mail.internet.MimeMultipart;import java.util.Properties;public class Mail1 { public static void main(String[] args) throws Exception { //要发送邮件,需要获得协议和支持!开启服务POP3/SMTP服务 授权码: fsxqgovorymigfeb Properties prop=new Properties(); prop.setProperty("mail.host","smtp.qq.com");//设置QQ邮件服务器 prop.setProperty("mail.transport.protocol","smtp");//设置邮箱发送协议 prop.setProperty("mail.smtp.auth","true");//需要验证用户名密码 //QQ邮箱还有设置SSL加密 MailSSLSocketFactory sf=new MailSSLSocketFactory(); sf.setTrustAllHosts(true); prop.put("mail.smtp.ssl.enable","true"); prop.put("mail.smtp.ssl.socketFactory",sf); //1.创建定义整个应用程序所需要的环境信息的Session对象 Session session=Session.getDefaultInstance(prop, new Authenticator() { @Override protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication("1369410772@qq.com","fsxqgovorymigfeb"); } }); //开启session的debug模式,这样就可以查看运行状态了 session.setDebug(true); //2.通过session对象获得transport对象 Transport transport = session.getTransport(); //3.使用邮箱的用户名和授权码连上邮件服务器 transport.connect("smtp.qq.com","1369410772@qq.com","fsxqgovorymigfeb"); //4.创建邮件:写邮件 MimeMessage message = new MimeMessage(session); message.setFrom(new InternetAddress("1369410772@qq.com"));//发件人 message.setRecipient(Message.RecipientType.TO,new InternetAddress("1369410772@qq.com"));//收件人 message.setSubject("你好");//邮件主题 //message.setContent("<h2 style='color: red'>你好</h2>","text/html;charset=utf-8");//邮件内容 //============================================================================= //带图片的内容 MimeBodyPart image = new MimeBodyPart(); DataHandler dh = new DataHandler(new FileDataSource("E:\\IDEA\\JavaWeb\\mail-java\\src\\tx.png"));//图片需要经过数据处理... DataHandler:数据处理 image.setDataHandler(dh);//在Body中放入处理的图片数据 image.setContentID("tx.png");//给图片设置ID //准备正文数据 MimeBodyPart text = new MimeBodyPart(); text.setContent("这是一封邮件正文带图片<img src='cid:tx.png'>的邮件","text/html;charset=utf-8"); //描述数据关系 MimeMultipart mm = new MimeMultipart(); mm.addBodyPart(text); mm.addBodyPart(image); mm.setSubType("mixed"); //设置到消息中,保存修改 message.setContent(mm); message.saveChanges(); //========================================================================= //5.发送邮件 transport.sendMessage(message,message.getAllRecipients()); //6.关闭连接 transport.close(); }}Spring实现
添加依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-mail</artifactId></dependency>编写配置文件
spring.mail.username=1369410772@qq.comspring.mail.password=fsxqgovorymigfebspring.mail.host=smtp.qq.comspring.mail.properties.mail.smtp.ssl.enable=true编写测试类
import org.junit.jupiter.api.Test;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.test.context.SpringBootTest;import org.springframework.mail.SimpleMailMessage;import org.springframework.mail.javamail.JavaMailSenderImpl;import org.springframework.mail.javamail.MimeMessageHelper;import javax.mail.MessagingException;import javax.mail.internet.MimeMessage;import java.io.File;@SpringBootTestclass DemoApplicationTests {//简单邮件 @Autowired JavaMailSenderImpl mailSender; @Test void contextLoads() { //发送邮件 //收件人 //内容 SimpleMailMessage message = new SimpleMailMessage(); message.setSubject("测试"); message.setText("Hello"); message.setFrom("1369410772@qq.com"); message.setTo("1369410772@qq.com"); mailSender.send(message); } @Test public void test2() throws Exception {//复杂邮件 MimeMessage mimeMessage = mailSender.createMimeMessage(); MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true); helper.setSubject("测试"); helper.setText("Hello",true); //附件 helper.addAttachment("1.jpg",new File("")); helper.setFrom("1369410772@qq.com"); helper.setTo("1369410772@qq.com"); mailSender.send(mimeMessage); }}“Java如何实现简单邮件发送功能”的内容就介绍到这里了，感谢大家的阅读。如果想了解更多行业相关的知识可以关注编程网网站，小编将为大家输出更多高质量的实用文章！
