javaMail发送邮件

第一个类：MailSenderInfo.java?

package com.util.mail;  
/**  
* 发送邮件需要使用的基本信息  
*/   
import java.util.Properties;   
public class MailSenderInfo {   
    // 发送邮件的服务器的IP和端口   
    private String mailServerHost;   
    private String mailServerPort = "25";   
    // 邮件发送者的地址   
    private String fromAddress;   
    // 邮件接收者的地址   
    private String toAddress;   
    // 登陆邮件发送服务器的用户名和密码   
    private String userName;   
    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;     
    /**  
      * 获得邮件会话属性  
      */   
    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;   
    }   
}   

?第二个类：SimpleMailSender.java?

package com.util.mail;

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; 

/** 
* 简单邮件（不带附件的邮件）发送器 
*/ 
public class SimpleMailSender  { 
/** 
  * 以文本格式发送邮件 
  * @param mailInfo 待发送的邮件的信息 
  */ 
	public boolean sendTextMail(MailSenderInfo 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; 
	} 
	
	/** 
	  * 以HTML格式发送邮件 
	  * @param mailInfo 待发送的邮件信息 
	  */ 
	public static boolean sendHtmlMail(MailSenderInfo 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; 
	} 
} 

?第三个类：MyAuthenticator.java

package com.util.mail;  
  
import javax.mail.*;  
    
public class MyAuthenticator extends Authenticator{  
    String userName=null;  
    String password=null;  
       
    public MyAuthenticator(){  
    }  
    public MyAuthenticator(String username, String password) {   
        this.userName = username;   
        this.password = password;   
    }   
    protected PasswordAuthentication getPasswordAuthentication(){  
        return new PasswordAuthentication(userName, password);  
    }  
}  

?邮件发送类MailSend：

package com.mail.util;

public class MailSend {

	private static MailSend mailSend = null;

	private MailSend() {

	}

	public static MailSend getInstance() {
		if (mailSend == null) {
			mailSend = new MailSend();
		}
		return mailSend;
	}

	public void sendMail(String mailContext) {
		// 这个类主要是设置邮件
		MailSenderInfo mailInfo = new MailSenderInfo();
		mailInfo.setMailServerHost("smtp.qq.com");
		mailInfo.setMailServerPort("25");
		mailInfo.setValidate(true);
		mailInfo.setUserName("137512127@qq.com");
		mailInfo.setPassword("woaixua52110!@");// 您的邮箱密码
		mailInfo.setFromAddress("137512127@qq.com");
		mailInfo.setToAddress("137512127@qq.com");
		mailInfo.setSubject("请及时购买");
		mailInfo.setContent(mailContext);
		// 这个类主要来发送邮件
		SimpleMailSender sms = new SimpleMailSender();
		//sms.sendTextMail(mailInfo);// 发送文体格式
		sms.sendHtmlMail(mailInfo);// 发送html格式
	}
}

?复制代码就能用，亲测没问题。

? ?如果你用myEclipse进行开发的话，运行时可能会出现以下的错误:
Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/mail/util/LineInputStream
原因是jar包版本不统一,解决方法如下:

进入 C:\Softwares\MyEclipse\Common\plugins\com.genuitec.eclipse.j2eedt.core_10.5.0.me201207171805\data\libraryset\EE_5目录， ?这里是myEclipse的安装目录，找到javaee.jar用rar打开，并删除javax目录下的 activation和 mail文件夹，在删除之前最好先备份一下。

原文：http://caixu52110.iteye.com/blog/2179579