基于JavaMail的邮件发送及问题

一、发送源代码

public static void SendMail(Properties properties, String subject, String content)

    {

        try {

            Properties mailProperties = new Properties();

            // 解决ssl发送邮件

            mailProperties.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");

            mailProperties.put("mail.smtp.socketFactory.port", String.valueOf(properties.getProperty("mail.port")));

            mailProperties.put("mail.smtp.port", String.valueOf(properties.getProperty("mail.port")));

            mailProperties.put("mail.transport.protocol", "smtp");

            mailProperties.put("mail.smtp.auth", "true");

            // 设置SSL

            MailSSLSocketFactory sf = new MailSSLSocketFactory();

            sf.setTrustAllHosts(true);

            mailProperties.put("mail.smtp.ssl.socketFactory", sf);

            mailProperties.put("mail.smtp.ssl.enable", "true");

            mailProperties.put("mail.smtp.socketFactory.fallback", "true");

            Session session = Session.getDefaultInstance(mailProperties, null);

            session.setDebug(true);

            MimeMultipart mp = new MimeMultipart();

            MimeMessage mimeMessage = new MimeMessage(session);

            // 设置发信人

            mimeMessage.setFrom(new InternetAddress(String.valueOf(properties.getProperty("mail.sender"))));

            // 设置接收人

            mimeMessage.setRecipients(Message.RecipientType.TO, String.valueOf(properties.getProperty("mail.receiver")));

            // 设置主题

            mimeMessage.setSubject(subject);

            // 设置正文

            BodyPart bp = new MimeBodyPart();

            bp.setContent(content, "text/html;charset=utf-8");

            mp.addBodyPart(bp);

            mimeMessage.setContent(mp);

            mimeMessage.saveChanges();

            // 发送邮件

            Transport transport = session.getTransport("smtp");

            transport.connect(String.valueOf(properties.getProperty("mail.host")), String.valueOf(properties.getProperty("mail.username")), String.valueOf(properties.getProperty("mail.password")));

            transport.sendMessage(mimeMessage, mimeMessage.getRecipients(Message.RecipientType.TO));

            transport.close();

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

二、问题： java.lang.ClassNotFoundException: com.sun.mail.util.MailLogger

原本pom依赖

<dependency>

    <groupId >javax.mail </groupId >

    <artifactId >javax.mail- api</ artifactId>

    <version >1.6.0 </version >

</dependency>

MailLogger --是JavaMail的一部分，包含在Java EE环境里面，但是不包含在Java SE环境里面，出现这个错误很大的原因是在SE环境里面测试邮件的发送；

javax.mail-api只适合编译，但是如果你实在要运行代码，必须完全实现JavaMail

修改pom依赖

<dependency >

    <groupId >javax.mail </groupId >

    <artifactId >mail </artifactId >

    <version >1.4.7 </version >

</dependency >

三、问题：DEBUG SMTP: trying to connect to host "smtp.exmail.qq.com", port 465, isSSL false

            // 设置SSL

            MailSSLSocketFactory sf = new MailSSLSocketFactory();

            sf.setTrustAllHosts(true);

            mailProperties.put("mail.smtp.ssl.socketFactory", sf);

            mailProperties.put("mail.smtp.ssl.enable", "true");

            mailProperties.put("mail.smtp.socketFactory.fallback", "true");

四、问题： Could not connect to SMTPhost: smtp.qq.com, port:465

修改java运行环境

本地环境的jdk的配置中禁止了这个SLLv3协议，所以本地发送邮件才会一直报错。

解决方案是打开自己安装的jdk目录，找到配置的文件：java.security，将以上内容删除即可。