displaycontent.java

关于JAVA邮件开发的源代码...很有参考价值的源代码

package org.it315;
import java.io.IOException;
import javax.mail.BodyPart;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.Multipart;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class DisplayContent extends HttpServlet 
{
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException 
	{
		ServletOutputStream sos = response.getOutputStream();
		HttpSession session = request.getSession();
		int msgnum = Integer.parseInt(request.getParameter("msgnum"));
		Folder folder = (Folder)session.getAttribute("folder");
		
		try
		{
			Message msg = folder.getMessage(msgnum);
			//邮件类型不是mixed时，表示邮件中不包含附件，直接输出邮件内容
			if(!msg.isMimeType("multipart/mixed"))
			{
				response.setContentType("message/rfc822");
				msg.writeTo(sos);
			}
			else
			{
				//查找并输出邮件中的邮件正文
				Multipart mp = (Multipart)msg.getContent();
				int bodynum = mp.getCount();
				for(int i=0;i<bodynum;i++)
				{
					BodyPart bp = mp.getBodyPart(i);				
					/*
					 * MIME消息头中不包含disposition字段，
					 * 并且MIME消息类型不为mixed时，
					 * 表示当前获得的MIME消息为邮件正文
					 */
					if(!bp.isMimeType("multipart/mixed")
									  &&bp.getDisposition()==null)
					{
						response.setContentType("message/rfc822");
						bp.writeTo(sos);
					}
				}
			}
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}
}