本文主要是介绍Java javamail发送邮件 使用sina 加密端口发送，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
使用sina的邮件服务器发送，原来的
mail.smtp.server=smtp.sina.com
mail.smtp.port=25后来切换成阿里云服务器之后，发现本来可以发送的邮件发送失败并且报错如下：
java.lang.RuntimeException: javax.mail.MessagingException: Could not connect to SMTP host: smtp.sina.com, port: 25;
INFO | jvm 1 | main | 2018/10/11 17:02:01.278 | nested exception is:
INFO | jvm 1 | main | 2018/10/11 17:02:01.278 | java.net.ConnectException: Connection timed out (Connection timed out)
通过调查之后才发现，原来阿里云服务器25端口不能出，被禁了。只能使用Sina的加密端口。更高配置如下：
mail.smtp.server=smtp.sina.com
mail.smtp.port=465使用加密端口，需要注意的是必须要带上特定的参数才行。
pro.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");否则回报错如下：
INFO | jvm 1 | main | 2018/10/11 17:32:57.548 | Caused by: javax.mail.MessagingException: Could not connect to SMTP host: smtp.sina.com, port: 465, response: -1
INFO | jvm 1 | main | 2018/10/11 17:32:57.548 | at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1922) ~[mail-1.4.4.jar:1.4.4]
INFO | jvm 1 | main | 2018/10/11 17:32:57.548 |
上面是说明出现问题的原因和解决办法。下面贴出发送部分邮件部分主要代码：
import ilism.mail.MailAuthenticator;
import ilism.mail.MailSender;
import ilism.mail.MailSenderInfo;import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Properties;import org.apache.log4j.Logger;
import org.hsqldb.lib.StringUtil;
import org.springframework.beans.factory.annotation.Autowired;import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
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;public static void main(String[] args){
//initialize
MailSenderInfo info = new MailSenderInfo();
info.setMailServerHost(configurationService.getConfiguration().getString("mail.smtp.server"));//发件箱服务器
info.setMailServerPort(configurationService.getConfiguration().getString("mail.smtp.port"));//发件箱服务器端口
info.setValidate(true);
info.setFromAddress(configurationService.getConfiguration().getString("mail.from"));//from address
info.setUserName(configurationService.getConfiguration().getString("mail.smtp.user"));//用户名
info.setPassword(configurationService.getConfiguration().getString("mail.smtp.password"));//密码
try
{//send emailinfo.setSubject(current.getTitle());info.setContent(current.getContent());info.setToAddress(current.getEmail());if (current.getFileAttachment() != null && !StringUtil.isEmpty(current.getFileAttachment())){//带附件info.setAttachFileNames(new String[]{ current.getFileAttachment() });this.sendHtmlMailWithFileCopy(info);}else{//htmlinfo.setAttachFileNames(null);this.sendHtmlMailCopy(info);}//标记已发送成功current.setHasSendFlag(Boolean.TRUE);modelService.save(current);Thread.sleep(2000);
}
catch (final Exception e)
{if (e instanceof javax.mail.MessagingException){//不能连smtp的等到下一次处理Logger.getLogger(e.getClass()).error("wait for next email send action!", e);}else{throw e;}
}
} //html发送public boolean sendHtmlMailCopy(MailSenderInfo mailInfo) {MailAuthenticator authenticator = null;Properties pro = mailInfo.getProperties();pro.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");if (mailInfo.isValidate()) {authenticator = new MailAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());}Session sendMailSession = Session.getDefaultInstance(pro, authenticator);try {Message mailMessage = new MimeMessage(sendMailSession);Address from = new InternetAddress(mailInfo.getFromAddress());mailMessage.setFrom(from);String[] var9;int var8 = (var9 = mailInfo.getToAddress().split(";")).length;for(int var7 = 0; var7 < var8; ++var7) {String one = var9[var7];mailMessage.addRecipient(Message.RecipientType.TO, new InternetAddress(one));}mailMessage.setSubject(mailInfo.getSubject());mailMessage.setSentDate(new Date());Multipart mainPart = new MimeMultipart();BodyPart html = new MimeBodyPart();html.setContent(mailInfo.getContent(), "text/html; charset=utf-8");mainPart.addBodyPart(html);mailMessage.setContent(mainPart);Transport transport = sendMailSession.getTransport("smtp");transport.connect(mailInfo.getMailServerHost(), mailInfo.getUserName(), mailInfo.getPassword());transport.sendMessage(mailMessage, mailMessage.getRecipients(Message.RecipientType.TO));transport.close();return true;} catch (MessagingException var10) {Logger.getLogger(var10.getClass()).error("", var10);throw new RuntimeException(var10);}}//带附件发送public boolean sendHtmlMailWithFileCopy(MailSenderInfo mailInfo) {MailAuthenticator authenticator = null;Properties pro = mailInfo.getProperties();pro.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");if (mailInfo.isValidate()) {authenticator = new MailAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());}Session sendMailSession = Session.getDefaultInstance(pro, authenticator);try {Message mailMessage = new MimeMessage(sendMailSession);Address from = new InternetAddress(mailInfo.getFromAddress());mailMessage.setFrom(from);Address to = new InternetAddress(mailInfo.getToAddress());mailMessage.setRecipient(Message.RecipientType.TO, to);mailMessage.setSubject(mailInfo.getSubject());mailMessage.setSentDate(new Date());Multipart mainPart = new MimeMultipart("related");BodyPart html = new MimeBodyPart();html.setContent(mailInfo.getContent(), "text/html; charset=utf-8");mainPart.addBodyPart(html);String[] var12;int var11 = (var12 = mailInfo.getAttachFileNames()).length;for(int var10 = 0; var10 < var11; ++var10) {String file = var12[var10];html = new MimeBodyPart();DataSource fileDataSource = new FileDataSource(file);html.setDataHandler(new DataHandler(fileDataSource));html.setHeader("Content-ID", (new SimpleDateFormat("yyyyMMddHHmmss")).format(new Date()));html.setHeader("Content-Disposition", "attachment;filename=" + getFileName(file));mainPart.addBodyPart(html);}mailMessage.setContent(mainPart);Transport.send(mailMessage);return true;} catch (MessagingException var14) {Logger.getLogger(var14.getClass()).error("", var14);throw new RuntimeException(var14);}}private static String getFileName(String content) {content = content.replace('\\', '/');return content.substring(content.lastIndexOf(47) + 1);}
}
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