java ssl发送邮件
抽象
本博客的目的是演示如何使用Java Mail通过具有SSL连接的SMTP服务器发送电子邮件。
免责声明
这篇文章仅供参考。 在使用所提供的任何信息之前，请认真思考。 从中学到东西，但最终自己做出决定，风险自负。
要求
我使用以下主要技术完成了本文的所有工作。 您可能可以使用不同的技术或版本来做相同的事情，但不能保证。
- NetBeans 11.2
- Maven 3.3.9（与NetBeans捆绑在一起）
- Java 11（zulu11.35.15-ca-jdk11.0.5-win_x64）
- <dependency>
- <groupId>javax.mail</groupId>
- <artifactId>mail</artifactId>
- <version> 1.4 </version>
- <scope>test</scope> </dependency>
下载
访问我的GitHub页面https://github.com/mjremijan以查看我所有的开源项目。 这个职位的代码位于https://github.com/mjremijan/thoth-email中https://github.com/mjremijan/thoth-email/tree/master/thoth-email-via-ssl模块。
物产
本示例使用smtp-ssl-yahoo.properties文件保存SMTP服务器信息。 我使用了我个人的Yahoo! 帐户进行测试，因此在属性文件的名称中使用单词yahoo 。 重要的是文件的内容，如清单1所示。
清单1 –属性文件
# This is the name of the SMTP host machine. host= # This is the port number of the SMTP host machine. # The same host may support both SSL and TLS but on # different ports. So make sure you get the SSL port. port= # This is what you use in the “username” field when # you login. Typically # you login. Typically this is the same as your email # address, but this isn't always the case . username= # This is what you use in the “password” field when # you login. This value is CLEAR TEXT, so keep # you login. This value is CLEAR TEXT, so keep this # properties file safe. password= # This is the email address you want for the # email's FROM field. Enter the value using # the format shown below. Typically # the format shown below. Typically this is # just your email address for the account. from=FIRSTNAME LASTNAME <ADDRESS @EMAIL .COM> # This is the email address you want for the # email's REPLY_TO field. Enter the value using # the format shown below. Typically # the format shown below. Typically this is # just your email address for the account. Also the account. Also # typically this is the same as `from` above. # But be warned, if an email's FROM and REPLY_TO # are different, that's may be flagged as spam # and never be delivered. So keep `from` and # `reply` the same for initial testing reply=FIRSTNAME LASTNAME <ADDRESS @EMAIL .COM> # This is the email address you want to send # the email to. For testing, it's a good idea # to send it to yourself first. to=FIRSTNAME LASTNAME <ADDRESS @EMAIL .COM> 现在您有了一个属性文件，接下来让我们看一下代码。
码
这是一个JUnit测试，演示如何使用Java Mail通过具有SSL连接的SMTP服务器发送电子邮件。 清单2显示了代码。
注意对于初始测试，请始终检查您的SPAM文件夹。 可以始终添加一条规则以将其传递到您的INBOX。
清单2 – Java Mail示例
- package org.thoth.email.via.ssl; import java.net.InetAddress; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Properties; import javax.mail.Authenticator; import javax.mail.Message; import javax.mail.PasswordAuthentication; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeBodyPart; import javax.mail.internet.MimeMessage; import javax.mail.internet.MimeMultipart; import org.junit.jupiter.api.BeforeEach; import org.junit.jupiter.api.Test; public class SslTest {
- public SslTest() {
- }
- String now, hostname; protected String now, hostname;
- Properties yahoo; protected Properties yahoo;
- @BeforeEach
- public void setUp() throws Exception {
- now = new SimpleDateFormat( "MM-dd-yyyy hh:mm:ss a" ).format( new Date());
- hostname = InetAddress.getLocalHost().getHostName();
- yahoo = new Properties();
- yahoo.load( this .getClass().getResourceAsStream( "/smtp-ssl-yahoo.properties" ));
- }
- @Test
- public void a_test() throws Exception {
- // Create MimeMultipart
- MimeMultipart content = new MimeMultipart( "related" );
- // html part
- {
- MimeBodyPart textPart = new MimeBodyPart();
- textPart.setText( "<html><body>"
- + "<p>Time: " +now+ "</p>"
- + "<p>From: " +hostname+ "</p>"
- + "</body></html>"
- , "UTF8" , "html" );
- content.addBodyPart(textPart);
- }
- // properties
- Properties props = new Properties();
- {
- props.setProperty( "mail.smtp.auth" , "true" );
- props.setProperty( "mail.smtp.host" , yahoo.getProperty( "host" ));
- props.setProperty( "mail.smtp.socketFactory.port" , yahoo.getProperty( "port" ));
- props.setProperty( "mail.smtp.socketFactory.class" , "javax.net.ssl.SSLSocketFactory" );
- }
- Session smtp = null ;
- {
- smtp = Session.getInstance(props, new Authenticator() {
- @Override
- protected PasswordAuthentication getPasswordAuthentication() {
- return new PasswordAuthentication(
- yahoo.getProperty( "username" )
- , yahoo.getProperty( "password" )
- );
- }
- });
- smtp.setDebug( true );
- smtp.setDebugOut(System.out);
- }
- MimeMessage m = new MimeMessage(smtp);
- {
- m.setRecipient(Message.RecipientType.TO, new InternetAddress(yahoo.getProperty( "to" )));
- m.setSubject( "thoth-email SSL test " + now);
- InternetAddress from = null ;
- {
- from = new InternetAddress(yahoo.getProperty( "from" ));
- from.setPersonal( "Thoth Email" );
- m.setFrom(from);
- }
- InternetAddress reply = null ;
- {
- reply = new InternetAddress(yahoo.getProperty( "reply" ));
- m.setReplyTo( new InternetAddress[] {reply});
- }
- m.setContent(content);
- }
- Transport.send(m);
- } }
摘要
发送邮件的代码不是很困难。 成功接收电子邮件而不将其标记为垃圾邮件是另一回事。 但是，如果您遵循此示例，请使用有效的帐户，并且不要过度使用它，则应该可以。 该博客显示了如何使用Java Mail通过具有SSL连接的SMTP服务器发送电子邮件。
翻译自: https://www.javacodegeeks.com/2020/02/java-mail-sent-over-ssl.html
java ssl发送邮件
