关于javamail的错误，高手帮忙看看！

[robyjeffding]

先帖一处代码

package com.mail.bean;

import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;
/**
 * 在javamail中，如果需要认证，对于程序员来说必须继承Authenticator抽象类
 * @author Administrator
 *
 */
public class MyAuthor extends Authenticator {
	private String username;
	private String password;
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public MyAuthor(String password, String username) {
		super();
		this.password = password;
		this.username = username;
	}
	public MyAuthor() {
		super();
	}
	@Override
	protected PasswordAuthentication getPasswordAuthentication() {
		return new PasswordAuthentication(username,password);
	}
	
}

package com.mail.test;

import java.util.Date;
import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.Message.RecipientType;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

import com.mail.bean.MyAuthor;
public class MailTest {
/**
 * JAVA邮件测试（PS:没有成功过）
 * @param args
 */
	public static void main(String[] args) {
		Properties p=new Properties();//该属性对象用来保存服务器的地址和发送协议及端口号
		p.setProperty("mail.transport.protocol", "smtp");//确定发送协议
		p.setProperty("mail.smtp.host","smtp.qq.com");//确定服务器地址
		p.setProperty("mail.smtp.port","25");//确定服务器发送邮件协议smtp的端口号
		p.setProperty("mail.smtp.auth","true");//确定是否安全认证,
		String username="******";
		String password="********";
		MyAuthor auth=new MyAuthor(username,password);//根据用户名和密码构造认证对象
		Session session=Session.getDefaultInstance(p,auth);//根据连接服务器的信息和认证对象来获取与服务器的会话
		Message msg=new MimeMessage(session);//根据会话来构造消息
		try {
			msg.setFrom(new InternetAddress(username));//设置发件人地址
			msg.setRecipient(RecipientType.TO, new InternetAddress(username));//设置收件人地址
			msg.setSentDate(new Date());//设置发送时间
			msg.setSubject("to myself");//设置消息的主题
			msg.setText("use javamail send!");//设置消息的文本
			Transport.send(msg);//发送消息
		} catch (AddressException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (MessagingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}[code=Java]

}

[/code]
主方法运行时出错了！（Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/mail/util/LineInputStream）
我加了了mail.jar包，里面是有LineInputStream这个对象，可为什么说没有找到了？
错误信息如下：

Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/mail/util/LineInputStream
	at javax.mail.Session.loadProvidersFromStream(Session.java:928)
	at javax.mail.Session.access$000(Session.java:174)
	at javax.mail.Session$1.load(Session.java:870)
	at javax.mail.Session.loadResource(Session.java:1084)
	at javax.mail.Session.loadProviders(Session.java:889)
	at javax.mail.Session.<init>(Session.java:210)
	at javax.mail.Session.getDefaultInstance(Session.java:299)
	at com.mail.test.MailTest.main(MailTest.java:30)

解救高手了？

[robyjeffding]

高手啊，真情呼唤你啊！

[qiheia]

删除Java EE 5 Libraries/javaee.jar/mail里的包的东西。。

具体方法如下:
用rar打开X:/Program Files/MyEclipse 6.0/myeclipse/eclipse/plugins/com.genuitec.eclipse.j2eedt.core_6.0.1.zmyeclipse601200710/data/libraryset/EE_5/javaee.jar
,然后删除mail,试试.

[Sou2012]

少包了