使用java实现发送邮件功能

java发送邮件

导入jar

先下载 mail.jar,并将mail.jar添加到classpath即可。如果你使用的是JAVA EE SDK,则可以在C:\glassfishv3\glassfish\modules\mail.jar找到所需的jar包,同样需要添加的classpath。

邮件实体类

创建一个继承MailSenderInfo.java 记录发送邮件所需的各种信息,如发送邮件服务器的地址、端口号、发件人邮箱、收件人邮箱等等。代码如下:

import java.util.Properties;
public class MailSendInfo {
     // 发送邮件的服务器的IP(或主机地址)
     private String mailServerHost;
     // 发送邮件的服务器的端口
     private String mailServerPort = "25";
     // 发件人邮箱地址
     private String fromAddress;
     // 收件人邮箱地址
     private String toAddress;
     // 登陆邮件发送服务器的用户名
     private String userName;
     // 登陆邮件发送服务器的密码
     private String password;
     // 是否需要身份验证
     private boolean validate = false;
     // 邮件主题
     private String subject;
     // 邮件的文本内容
     private String content;
     // 邮件附件的文件名
     private String[] attachFileNames;
     public Properties getProperties() {
      Properties p = new Properties();
      p.put("mail.smtp.host", this.mailServerHost);
      p.put("mail.smtp.port", this.mailServerPort);
      p.put("mail.smtp.auth", validate ? "true" : "false");
      return p;
     }
     public String getMailServerHost() {
      return mailServerHost;
     }
     public void setMailServerHost(String mailServerHost) {
      this.mailServerHost = mailServerHost;
     }
     public String getMailServerPort() {
      return mailServerPort;
     }
     public void setMailServerPort(String mailServerPort) {
      this.mailServerPort = mailServerPort;
     }
     public boolean isValidate() {
      return validate;
     }
     public void setValidate(boolean validate) {
      this.validate = validate;
     }
     public String[] getAttachFileNames() {
      return attachFileNames;
     }
     public void setAttachFileNames(String[] fileNames) {
      this.attachFileNames = fileNames;
     }
     public String getFromAddress() {
      return fromAddress;
     }
     public void setFromAddress(String fromAddress) {
      this.fromAddress = fromAddress;
     }
     public String getPassword() {
      return password;
     }
     public void setPassword(String password) {
      this.password = password;
     }
     public String getToAddress() {
      return toAddress;
     }
     public void setToAddress(String toAddress) {
      this.toAddress = toAddress;
     }
     public String getUserName() {
      return userName;
     }
     public void setUserName(String userName) {
      this.userName = userName;
     }
     public String getSubject() {
      return subject;
     }
     public void setSubject(String subject) {
      this.subject = subject;
     }
     public String getContent() {
      return content;
     }
     public void setContent(String textContent) {
      this.content = textContent;
     }
}

邮箱登录类

MyAuthenticator.java,邮箱用户名和密码认证器。代码如下:

import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;
public class MyAuthenticator  extends Authenticator{
    private String userName;//用户名
    private String password;//密码

    public MyAuthenticator() {
    }

    public MyAuthenticator(String userName,String password){
        this.userName = userName;
        this.password = password;
    }
    /** 用作登录校验的,以确保你对该邮箱有发送邮件的权利*/
    @Override
    protected PasswordAuthentication getPasswordAuthentication(){
        return new PasswordAuthentication(userName, password);
    }
}

发送邮件类

SimpleMailSender.java,用来发送邮件类。代码如下:

import java.util.Date;
import java.util.Properties;
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 class SimpleMailSender {
     public boolean sendTextMail(MailSendInfo mailInfo) {
      // 判断是否需要身份认证
      MyAuthenticator authenticator = null;
      Properties pro = mailInfo.getProperties();
      if (mailInfo.isValidate()) {
       // 如果需要身份认证,则创建一个密码验证器
       authenticator = new MyAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());
      }
      // 根据邮件会话属性和密码验证器构造一个发送邮件的session
      Session sendMailSession = Session.getDefaultInstance(pro, authenticator);
      try {
       // 根据session创建一个邮件消息
       Message mailMessage = new MimeMessage(sendMailSession);
       // 创建邮件发送者地址
       Address from = new InternetAddress(mailInfo.getFromAddress());
       // 设置邮件消息的发送者
       mailMessage.setFrom(from);
       // 创建邮件的接收者地址,并设置到邮件消息中
       Address to = new InternetAddress(mailInfo.getToAddress());
       mailMessage.setRecipient(Message.RecipientType.TO, to);
       // 设置邮件消息的主题
       mailMessage.setSubject(mailInfo.getSubject());
       // 设置邮件消息发送的时间
       mailMessage.setSentDate(new Date());
       // 设置邮件消息的主要内容
       String mailContent = mailInfo.getContent();
       mailMessage.setText(mailContent);
       // 发送邮件
       Transport.send(mailMessage);
       return true;
      } catch (MessagingException ex) {
       ex.printStackTrace();
      }
      return false;
     }

     public static boolean sendHtmlMail(MailSendInfo mailInfo) {
      // 判断是否需要身份认证
      MyAuthenticator authenticator = null;
      Properties pro = mailInfo.getProperties();
      // 如果需要身份认证,则创建一个密码验证器
      if (mailInfo.isValidate()) {
       authenticator = new MyAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());
      }
      // 根据邮件会话属性和密码验证器构造一个发送邮件的session
      Session sendMailSession = Session.getDefaultInstance(pro, authenticator);
      try {
       // 根据session创建一个邮件消息
       Message mailMessage = new MimeMessage(sendMailSession);
       // 创建邮件发送者地址
       Address from = new InternetAddress(mailInfo.getFromAddress());
       // 设置邮件消息的发送者
       mailMessage.setFrom(from);
       // 创建邮件的接收者地址,并设置到邮件消息中
       Address to = new InternetAddress(mailInfo.getToAddress());
       // Message.RecipientType.TO属性表示接收者的类型为TO
       mailMessage.setRecipient(Message.RecipientType.TO, to);
       // 设置邮件消息的主题
       mailMessage.setSubject(mailInfo.getSubject());
       // 设置邮件消息发送的时间
       mailMessage.setSentDate(new Date());
       // MiniMultipart类是一个容器类,包含MimeBodyPart类型的对象
       Multipart mainPart = new MimeMultipart();
       // 创建一个包含HTML内容的MimeBodyPart
       BodyPart html = new MimeBodyPart();
       // 设置HTML内容
       html.setContent(mailInfo.getContent(), "text/html; charset=utf-8");
       mainPart.addBodyPart(html);
       // 将MiniMultipart对象设置为邮件内容
       mailMessage.setContent(mainPart);
       // 发送邮件
       Transport.send(mailMessage);
       return true;
      } catch (MessagingException ex) {
       ex.printStackTrace();
      }
      return false;
     }
}

测试

接下来就是见证奇迹的时刻了,代码如下:

public class SendMailDemo {

    // public static void main(String[] args) {
    public void doSend(){
      // 设置邮件服务器信息
      MailSendInfo mailInfo = new MailSendInfo();
      mailInfo.setMailServerHost("smtp.163.com");
      mailInfo.setMailServerPort("25");
      mailInfo.setValidate(true);

      // 邮箱用户名
      mailInfo.setUserName("*****@163.com");
      // 邮箱密码
      mailInfo.setPassword("************");
      // 发件人邮箱
      mailInfo.setFromAddress("*****@163.com");
      // 收件人邮箱
      mailInfo.setToAddress("***********@126.com");
      // 邮件标题
      mailInfo.setSubject("商务合作邮件提醒");
      // 邮件内容
      StringBuffer buffer = new StringBuffer();
      buffer.append("蜡笔分期欢迎您提供的商务合作\n");
      buffer.append("来自***的商务合作方案");
      mailInfo.setContent(buffer.toString());

      // 发送邮件
      SimpleMailSender sms = new SimpleMailSender();
      // 发送文体格式
      //sms.sendTextMail(mailInfo);
      // 发送html格式
      boolean flg = SimpleMailSender.sendHtmlMail(mailInfo);
      if(flg){
          System.out.println("邮件发送成功");
      }else{
          System.out.println("邮件发送失败");
      }
     }
}

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