jmail收发邮件

jmail收发邮件，发送邮件基于smtp协议，收邮件基于pop3协议，当然没有弄邮件服务器了，贴下代码，实在没什么好说的。

还有一点要记住smtp服务器的常用端口是25；pop3是110。

发邮件：

package wherever.zhj.mail;

import java.util.ArrayList;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Address;
import javax.mail.Authenticator;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
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.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class SMTPSendEmailBuilder
{
	private String smtpName = null;
	private String userName = null;
	private String password = null;

	public SMTPSendEmailBuilder(String smtpName, String userName, String password)
	{
		this.smtpName = smtpName;
		this.userName = userName;
		this.password = password;
	}
	
	public void sendEmail(EmailMessage emessage) throws MessagingException
	{
		Properties props = new Properties();
		props.put("mail.smtp.host", smtpName);// 指定SMTP服务器
		props.put("mail.smtp.auth", "true");// 指定是否需要SMTP验证
			Session mailSession = Session.getInstance(props,
					new Authenticator()
					{
						protected PasswordAuthentication getPasswordAuthentication()
						{
							return new PasswordAuthentication(userName,password);
						}	
					}
					);
			mailSession.setDebug(true);
			MimeMessage msg=new MimeMessage(mailSession);
			msg.setSentDate(emessage.getSendDate());
			msg.setSubject(emessage.getSubject());
			msg.setFrom(new InternetAddress(emessage.getFrom()));
			msg.setRecipients(RecipientType.TO,this.getArrayAddress(emessage.getRecipients()));
			MimeBodyPart textBodyPart=new MimeBodyPart();
			textBodyPart.setText(emessage.getContent());
			Multipart container=new MimeMultipart();
			container.addBodyPart(textBodyPart);
			if(emessage.isAttach())
			{
				for(String filePath : emessage.getAttachNames())
				{
					MimeBodyPart fileBodyPart=new MimeBodyPart();
					FileDataSource fds = new FileDataSource(filePath);
					fileBodyPart.setDataHandler(new DataHandler(fds));
					fileBodyPart.setFileName(fds.getName());
					container.addBodyPart(fileBodyPart);
				}
			}
			msg.setContent(container);
			Transport.send(msg); 
		}
	
	private Address[] getArrayAddress(ArrayList<String> listStr) throws AddressException
	{
		Address[] adds = new InternetAddress[listStr.size()];
		for (int i=0;i<listStr.size();i++)
		{
			adds[i] = new InternetAddress(listStr.get(i));
		}
		return adds;
	}
}

 收邮件：

package wherever.zhj.mail;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Properties;

import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.FetchProfile;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Part;
import javax.mail.Session;
import javax.mail.Store;

public class POP3ReceiverEmailBuilder
{
	private Folder inbox = null;
	private Store store = null;
	private String popName = null;
	private String userName = null;
	private String password = null;

	public POP3ReceiverEmailBuilder(String popName, String userName, String password)
	{
		this.popName = popName;
		this.userName = userName;
		this.password = password;
	}

	/** 连接邮件服务器，获得所有邮件列表 */
	public ArrayList<EmailMessage> getMail() throws Exception
	{
		Properties prop = new Properties();
		prop.put("mail.pop3.host", popName);
		Session session = Session.getDefaultInstance(prop);
		session.setDebug(true);
		store = session.getStore("pop3");
		store.connect(popName, userName, password);
		inbox = store.getDefaultFolder().getFolder("INBOX");
		inbox.open(Folder.READ_ONLY);
		Message[] msg = inbox.getMessages();
		FetchProfile profile = new FetchProfile();
		profile.add(FetchProfile.Item.ENVELOPE);
		inbox.fetch(msg, profile);
		ArrayList<EmailMessage> listEMessage = new ArrayList<EmailMessage>();
		for (Message message : msg)
		{
			if (message.isMimeType("text/*"))
			{
				listEMessage.add(handleText(message));
			}
			else
			{
				listEMessage.add(handleMultipart(message));
			}
		}
		this.close();
		return listEMessage;
	}

	/** 处理文本邮件 */
	public EmailMessage handleText(Message msg) throws Exception
	{
		EmailMessage emessage = handle(msg);
		emessage.setContent(msg.getContent().toString());
		return emessage;
	}

	private ArrayList<String> getListString(Address[] arrayAddr)
	{
		ArrayList<String> listStr = new ArrayList<String>();
		for (Address str : arrayAddr)
		{
			listStr.add(str.toString());
		}
		return listStr;
	}

	private EmailMessage handle(Message message) throws MessagingException
	{
		EmailMessage emessage = new EmailMessage();
		emessage.setFrom(message.getFrom()[0].toString());
		emessage.setSendDate(message.getSentDate());
		emessage.setSubject(message.getSubject());
		emessage.setRecipients(getListString(message.getAllRecipients()));
		return emessage;
	}

	/** 处理非文本邮件 */
	private EmailMessage handleMultipart(Message msg) throws Exception
	{
		String disposition;
		BodyPart part;
		EmailMessage emessage = handle(msg);
		Multipart mp = (Multipart) msg.getContent();
		int mpCount = mp.getCount();// Miltipart的数量,用于除了多个part,比如多个附件
		for (int m = 0; m < mpCount; m++)
		{
			part = mp.getBodyPart(m);
			disposition = part.getDisposition();
			if (disposition != null && disposition.equals(Part.ATTACHMENT))// 判断是否有附件
			{
				emessage.setAttach(true);
				emessage.addAttachs(part.getInputStream());
				emessage.addAttachNames(part.getFileName());
			}
			else
			{
				emessage.setContent(part.getContent().toString());
			}
		}
		return emessage;
	}

	/** base64解码 */
	private String base64Decoder(String s) throws Exception
	{
		sun.misc.BASE64Decoder decoder = new sun.misc.BASE64Decoder();
		byte[] b = decoder.decodeBuffer(s);
		return (new String(b));
	}

	/** 关闭连接 */
	public void close() throws Exception
	{
		if (inbox != null)
		{
			inbox.close(false);
		}
		if (store != null)
		{
			store.close();
		}
	}
}

 还有个javabean：

package wherever.zhj.mail;

import java.io.File;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Date;

/**邮件对象*/
public class EmailMessage
{
	private String subject = null;
	private String from = null;
	private ArrayList<String> recipients = new ArrayList<String>();//收件人集合
	private Date sendDate = null;
	private String content = null;
	private ArrayList<InputStream> attachs = new ArrayList<InputStream>();//附件集合
	private boolean isAttach = false; //是否有附件
	private ArrayList<String> attachNames = new ArrayList<String>(); //附件名字

	public ArrayList<String> getAttachNames()
	{
		return attachNames;
	}

	public void setAttachNames(ArrayList<String> attachNames)
	{
		this.attachNames = attachNames;
	}
	
	public void addAttachNames(String attachName)
	{
		this.attachNames.add(attachName);
	}

	public boolean isAttach()
	{
		return isAttach;
	}

	public void setAttach(boolean isAttach)
	{
		this.isAttach = isAttach;
	}

	public String getSubject()
	{
		return subject;
	}

	public void setSubject(String subject)
	{
		this.subject = subject;
	}

	public String getFrom()
	{
		return from;
	}

	public void setFrom(String from)
	{
		this.from = from;
	}

	public ArrayList<String> getRecipients()
	{
		return recipients;
	}

	public void setRecipients(ArrayList<String> recipients)
	{
		this.recipients = recipients;
	}
	
	public void addRecipients(String recipient)
	{
		this.recipients.add(recipient);
	}

	public Date getSendDate()
	{
		return sendDate;
	}

	public void setSendDate(Date sendDate)
	{
		this.sendDate = sendDate;
	}

	public String getContent()
	{
		return content;
	}

	public void setContent(String content)
	{
		this.content = content;
	}

	public ArrayList<InputStream> getAttachs()
	{
		return attachs;
	}

	public void addAttachs(InputStream attachs)
	{
		this.attachs.add(attachs);
	}

	public void setAttachs(ArrayList<InputStream> attachs)
	{
		this.attachs = attachs;
	}

}