JSP/JavaMail实例：邮件发送

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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"

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:

<%@ 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>

保存代码，以供参考。

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