Java发送邮件javax.mail的实现方法

直接上源码：
1. 邮件的基本信息(方便就直接设置为静态了)
下面最好是做为一个javabean

package com.lgf.Email; 
 
import java.util.Date; 
 
public class EmailMessage  
{ 
   
   
// 收件人邮箱 
  public static String TO = "xxx@xxx.com";   
// 发件人邮箱 
  public static String FROM = "xxx@xxx.com";  
  public static String FROM_NAME = "xxx";  
//  抄送人   
  public static String CC="xxx@nxxx.com";   
//  暗送人 
  public static String BCC="xxx@nxxx.com";     
// 邮件的类型 
  public static String Email_Content = "text/plain"; 
// 邮件标题 
  public static String Email_Subject = "Test Email With JavaMail";   
// 邮件头 
  public static String Email_Header = "This Is Email Header";   
// 内容 
  public static String Email_Body = "This Is Email Body";  
// 服务器 比如QQ的可以设置为smtp.qq.com 
  public static String Email_Host = "smtp.xxx.com";      
// 发送时间 
  public static Date sendDate = new Date();  
// 是否需要验证用户名和密码 
  public static boolean validate = true;    
}

2. 服务器验证(就是一般登入时候的用户名和密码)

package com.lgf.Email; 
 
import javax.mail.Authenticator; 
import javax.mail.PasswordAuthentication; 
 
 
public class MailAuthenticator extends Authenticator{ 
  private String username="xxxxx";   
  private String password="xxxxx";   
   
  public MailAuthenticator() { 
    super(); 
  } 
   
   
  public MailAuthenticator(String userName , String password) { 
    super(); 
    this.username = userName; 
    this.password = password; 
  } 
  protected PasswordAuthentication getPasswordAuthentication() 
  {   
    return new PasswordAuthentication(this.username,this.password);   
  }   
} 

 3. 发送邮件前设置信息和步骤

package com.lgf.Email; 
 
import java.util.Properties; 
 
import javax.activation.DataHandler; 
import javax.activation.DataSource; 
import javax.activation.FileDataSource; 
import javax.mail.Address; 
import javax.mail.Authenticator; 
import javax.mail.BodyPart; 
import javax.mail.Message; 
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; 
 
import com.lgf.SendEmail.MailAuthenticator; 
 
public class SendEmail  
{ 
   
     
  public void doSendNormalMail()  
  {   
//    获取系统环境  
    Properties prop = new Properties();  
    Authenticator auth = null; 
//   判断发送邮件是否需要验证 
    if (EmailMessage.validate)  
    { 
//      邮件服务器认证  用户名和密码 
      auth = new MailAuthenticator();  
    } 
//   添加必要的信息 
    prop.put("mail.smtp.host", EmailMessage.Email_Host);   
    prop.put("mail.smtp.auth", "true");   
     
//    设置对话和邮件服务器进行通讯 
    Session session = Session.getDefaultInstance(prop, auth);   
//   在控制台显示Debug信息 
    session.setDebug(true); 
//   设置邮件对象 
    Message message = new MimeMessage(session);   
    try  
    {   
//      设置邮件主题  
      message.setSubject(EmailMessage.Email_Subject);   
//      设置邮件标题   
      message.setHeader("Header", EmailMessage.Email_Header);  
//      设置发送时间   
      message.setSentDate(EmailMessage.sendDate); 

//      设置发信人地址 和 名字 
      Address address = new InternetAddress(EmailMessage.FROM, EmailMessage.FROM_NAME);   
//     把发件人信息添加到信息中 
      message.setFrom(address);   

//     设置发件人地址 
      Address toAddress = new InternetAddress(EmailMessage.TO);  
//      设置接收人地址 
      message.setRecipient(Message.RecipientType.TO, toAddress);   
      
//     设置多个收件人地址   
//     message.addRecipient(Message.RecipientType.TO,new InternetAddress("xxx@xxx.com"));   
 
//      设置邮件格式 
      message.setContent("Content", EmailMessage.Email_Content);  
//      设置邮件内容  必须在设置文件格式后面 
      message.setText(EmailMessage.Email_Body);  

//     保存上面添加的信息 
      message.saveChanges();   
//      发送邮件  
      System.out.println("sendNormalEmail() 开始发送邮件……");   
      Transport.send(message);   
      System.out.println("发送成功！");   
    } catch (Exception e) 
    {   
 System.out.println("出错");   
 e.printStackTrace();   
    }   
  }   
   
   
  public void doSendHtmlMail()  
  {   
//    获取系统环境  
    Properties prop = new Properties();  
 
    Authenticator auth = null; 
    if (EmailMessage.validate) 
    { 
//      邮件服务器认证  用户名和密码 
      auth = new MailAuthenticator(); 
    } 
//   添加必要的信息 
    prop.put("mail.smtp.host", EmailMessage.Email_Host);   
    prop.put("mail.smtp.auth", "true");   
     
//    设置对话和邮件服务器进行通讯 
    Session session = Session.getDefaultInstance(prop, auth);   
     
//   设置邮件对象 
    Message message = new MimeMessage(session);   
    try  
    {   
//      设置邮件主题  
      message.setSubject(EmailMessage.Email_Subject);   
//      设置邮件标题   
      message.setHeader("Header", EmailMessage.Email_Header);  
//      设置发送时间   
      message.setSentDate(EmailMessage.sendDate); 

//      设置发信人地址 和 名字 
      Address address = new InternetAddress(EmailMessage.FROM, EmailMessage.FROM_NAME);   
//     把发件人信息添加到信息中 
      message.setFrom(address);   

//     设置发件人地址 
      Address toAddress = new InternetAddress(EmailMessage.TO);  
//      设置接收人地址 
      message.setRecipient(Message.RecipientType.TO, toAddress);   
      
//     设置多个收件人地址   
//     message.addRecipient(Message.RecipientType.TO,new InternetAddress("xxx@xxx.com"));   
 
//     设置发送信息的内容  下面为发送hmml 
//     设置邮件格式 
      EmailMessage.Email_Content = "text/html; charset=utf-8"; 
      message.setContent(EmailMessage.Email_Body, EmailMessage.Email_Content);  
 
//     保存上面添加的信息 
      message.saveChanges();   
//      发送邮件  
      System.out.println("doSendHtmlMail() 开始发送邮件……");   
      Transport.send(message);   
      System.out.println("发送成功！");   
    } catch (Exception e) 
    {   
 System.out.println("出错");   
 e.printStackTrace();   
    }   
  }   
   
  public void doSendAttachmentMail()  
  {   
//    获取系统环境  
    Properties prop = new Properties();  
 
    Authenticator auth = null; 
    if (EmailMessage.validate) 
    { 
//      邮件服务器认证  用户名和密码 
      auth = new MailAuthenticator(); 
    } 
//   添加必要的信息 
    prop.put("mail.smtp.host", EmailMessage.Email_Host);   
    prop.put("mail.smtp.auth", "true");   
     
//    设置对话和邮件服务器进行通讯 
    Session session = Session.getDefaultInstance(prop, auth);   
     
//   设置邮件对象 
    Message message = new MimeMessage(session);   
    try  
    {   
//      设置邮件主题  
      message.setSubject(EmailMessage.Email_Subject);   
//      设置邮件标题   
      message.setHeader("Header", EmailMessage.Email_Header);  
//      设置发送时间   
      message.setSentDate(EmailMessage.sendDate); 

//      设置发信人地址 和 名字 
      Address address = new InternetAddress(EmailMessage.FROM, EmailMessage.FROM_NAME);   
//     把发件人信息添加到信息中 
      message.setFrom(address);   

//     设置发件人地址 
      Address toAddress = new InternetAddress(EmailMessage.TO);  
//      设置接收人地址 
      message.setRecipient(Message.RecipientType.TO, toAddress);   
      
//     设置多个收件人地址   
//     message.addRecipient(Message.RecipientType.TO,new InternetAddress("xxx@xxx.com"));   
      

//     设置发送信息的内容  下面为发送附件 
      message.setContent(EmailMessage.Email_Body, EmailMessage.Email_Content);  

      BodyPart messageBodyPart = new MimeBodyPart();   
      messageBodyPart.setText("bodypart");   

      Multipart multipart = new MimeMultipart();   
      multipart.addBodyPart(messageBodyPart);   

      messageBodyPart = new MimeBodyPart();   

//     设置上传的资源 
      DataSource source = new FileDataSource("E:\3.doc");  
//     添加到 
      messageBodyPart.setDataHandler(new DataHandler(source));   
//     设置文件名称,记得后缀名 
      messageBodyPart.setFileName("test.doc");   
      multipart.addBodyPart(messageBodyPart);  

      message.setContent(multipart);   

//     保存上面添加的信息 
      message.saveChanges();   
//      发送邮件  
      System.out.println("doSendAttachmentMail() 开始发送邮件……");   
      Transport.send(message);   
      System.out.println("发送成功！");   
    } catch (Exception e) 
    {   
 System.out.println("出错");   
 e.printStackTrace();   
    }   
  }   
   
  public static void main(String[] args) 
  { 
//   new SendEmail().doSendNormalMail(); 
//   new SendEmail().doSendHtmlMail(); 
    new SendEmail().doSendAttachmentMail(); 
  } 
 
} 

以上就是Java发送邮件javax.mail的详细代码，希望对大家实现java邮件发送有所帮助。