教程:基于Spring快速开发电子邮件发送功能
2024-08-27 22:39:29
在Spring框架的spring-context-support.jar中有对电子邮件发送功能的封装;
基于Spring开发简单省事,而且更稳定。需要mail.jar包支持
@Component public class EmailSendService implements IEmailSendService { private String host; private String username; private String password; public boolean sendText(String email[], String title, String text) { try { JavaMailSenderImpl senderImpl = new JavaMailSenderImpl(); // 设定mail server senderImpl.setHost(this.host); // 建立邮件消息 SimpleMailMessage mailMessage = new SimpleMailMessage(); // 设置收件人,寄件人 用数组发送多个邮件 // String[] array = new String[] // {"sun111@163.com","sun222@sohu.com"}; // mailMessage.setTo(array); mailMessage.setTo(email); mailMessage.setFrom(IDNMailHelper.toIdnAddress(this.username)); mailMessage.setSubject(title); mailMessage.setText(text); senderImpl.setUsername(this.username); // 根据自己的情况,设置username senderImpl.setPassword(this.password); // 根据自己的情况, 设置password Properties prop = new Properties(); prop.put("mail.smtp.auth", "true"); // 将这个参数设为true,让服务器进行认证,认证用户名和密码是否正确 prop.put("mail.smtp.timeout", "25000"); senderImpl.setJavaMailProperties(prop); // 发送邮件 // senderImpl.send(mailMessage); senderImpl.send(mailMessage); System.out.println(" 邮件发送成功.. "); return true; } catch (Exception e) { e.printStackTrace(); return false; } } public boolean sendHtml(String email[], String title, String html) { try { JavaMailSenderImpl senderImpl = new JavaMailSenderImpl(); // 设定mail server senderImpl.setHost(this.host); // 建立邮件消息,发送简单邮件和html邮件的区别 MimeMessage mailMessage = senderImpl.createMimeMessage(); MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage); // 设置收件人,寄件人 messageHelper.setTo(email); messageHelper.setFrom(this.username); messageHelper.setSubject(title); // true 表示启动HTML格式的邮件 messageHelper.setText(html, true); senderImpl.setUsername(this.username); // 根据自己的情况,设置username senderImpl.setPassword(this.password); // 根据自己的情况, 设置password Properties prop = new Properties(); prop.put("mail.smtp.auth", "true"); // 将这个参数设为true,让服务器进行认证,认证用户名和密码是否正确 prop.put("mail.smtp.timeout", "25000"); senderImpl.setJavaMailProperties(prop); // 发送邮件 senderImpl.send(mailMessage); System.out.println("邮件发送成功.."); return true; } catch (Exception e) { e.printStackTrace(); return false; } } public void setHost(String host) { this.host = host; } public void setUsername(String username) { this.username = username; } public void setPassword(String password) { this.password = password; } public boolean sendText(String email, String title, String text) { return this.sendText(new String[]{email}, title, text); } public boolean sendHtml(String email, String title, String html) { return this.sendHtml(new String[]{email}, title, html); } }
在这里如果不注意会有一个IDN编码问题。我是经历之后在so上找到了相关的解决方法。详见以下代码
可能出现的异常:JavaMail: “Domain contains control or whitespace in string” errormessage because of domain with danish charaters
public class IDNMailHelper { public static String toIdnAddress(String mail) { if (mail == null) { return null; } int idx = mail.indexOf('@'); if (idx < 0) { return mail; } return localPart(mail, idx) + "@" + IDN.toASCII(domain(mail, idx)); } private static String localPart(String mail, int idx) { return mail.substring(0, idx); } private static String domain(String mail, int idx) { return mail.substring(idx + 1); } }
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