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JavaMail实现邮件发送的方法

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本文实例讲述了JavaMail实现邮件发送的方法。分享给大家供大家参考。具体如下:

下载 activation.jar 和 mail.jar 配置CLASSPATH,将上面两个jar包加入到CLASSPATH中.

JavaBean : "SendEmail.java" 。

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package cls;
import java.util.Date;
import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.*;
public class SendEmail
{
  String host;
  String username;
  String password;
  String fromAddr;
  String toAddr;
  String subject;
  String content;
  public SendEmail()
  {
  // 变量初始化
  host = "smtp.qq.com" ;
  username = "" ;
  password = "" ;
  fromAddr = "@" ;
  }
  // 发送邮件
  public boolean sendMail()
  {
  Properties prop;
  Session session;
  MimeMessage msg;
  try
  {
   prop = new Properties(); // 存储连接参数
   prop.put( "mail.smtp.host" ,host);
   prop.put( "mail.smtp.auth" , "true" );
   session = Session.getDefaultInstance(prop, null );
   // 获得一个邮件的Session
   msg = new MimeMessage(session); // 邮件信息
   // 检查邮件地址是否合法
   if (fromAddr == null || fromAddr.equals( "" ))
   {
   throw new Exception( "发件地址错误" );
   }
   if (toAddr == null || toAddr.equals( "" ))
   {
   throw new Exception( "目标地址错误" );
   }
   //设置源地址
   msg.setFrom( new InternetAddress(fromAddr));
   //设置目的地址
   msg.setRecipient(Message.RecipientType.TO, new InternetAddress(toAddr));
   //设置主题
   msg.setSubject(subject);
   Multipart mp = new MimeMultipart(); //邮件内容
   MimeBodyPart mbpContent = new MimeBodyPart();
   mbpContent.setContent(content, "text/html" ); // 邮件格式
   mp.addBodyPart(mbpContent);
   msg.setContent(mp);
   msg.setSentDate( new Date());
   // 发送邮件
   Transport transport = session.getTransport( "smtp" );
   transport.connect((String)prop.get( "mail.smtp.host" ),username,password);
   transport.sendMessage(msg,msg.getRecipients(MimeMessage.RecipientType.TO));
   transport.close();
   return true ;
  }
  catch (Exception e)
  {
   System.out.println(e);
   return false ;
  }
  }
  // getter and setter
  public String getPassword()
  {
  return password;
  }
  public void setPassword(String password)
  {
  this .password = password;
  }
  public String getHost()
  {
  return host;
  }
  public void setHost(String host)
  {
  this .host = host;
  }
  public String getUsername()
  {
  return username;
  }
  public void setUsername(String username)
  {
  this .username = username;
  }
  public String getFromAddr()
  {
  return this .fromAddr;
  }
  public void setFromAddr(String addr)
  {
  fromAddr = addr;
  }
  public String getToAddr()
  {
  return this .toAddr;
  }
  public void setToAddr(String addr)
  {
  toAddr = addr;
  }
  public String getSubject()
  {
  return subject;
  }
  public void setSubject(String sub)
  {
  subject = sub;
  }
  public String getContent()
  {
  return content;
  }
  public void setContent(String content)
  {
  this .content = content;
  }
}

sendmail.jsp

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<%@ page language= "java" contentType= "text/html; charset=utf-8" pageEncoding= "utf-8" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd" >
<html>
  <head>
  <title>Mail</title>
  <meta http-equiv= "Content-Type" content= "text/html; charset=utf-8" />
  </head>
  <body>
  <center>
   <jsp:useBean id= "email" class = "cls.SendEmail" scope= "page" />
   <jsp:setProperty name= "email" property= "toAddr" value= "host" />
   <jsp:setProperty name= "email" property= "fromAddr" value= "host" />
   <jsp:setProperty name= "email" property= "username" value= "username" />
   <jsp:setProperty name= "email" property= "password" value= "password" />
   <jsp:setProperty name= "email" property= "subject" value= "mail test" />
   <jsp:setProperty name= "email" property= "content" value= "hello world" />
   <%=email.sendMail() %>
  </center>
  </body>
</html>

希望本文所述对大家的java程序设计有所帮助.

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