发送邮件以及获取发件方ip的方法

需导入包，删除j2ee自带的mail文件

package ;

import ;
import ;
import ;

import ;
import ;
import ;
import ;

/**
 * @author nidayu
 * @date 2014-12-16
 * @Description xxx
 * @version V1.0
 */
public class SendEmailUtil {

	/**
	 * xxx
	 * 
	 * @author nidayu
	 * @param
	 * @return
	 */

	public static void send(String emailName, String emailPwd, String[] to, String smtpHost, String title, String content) {
		try {
			SmtpAuth sa = new SmtpAuth();
			(emailName, emailPwd);
			 props = new ();
			("", "true");
			("", smtpHost);
			InternetAddress fromAddress = new InternetAddress(emailName);
			InternetAddress[] toAddresss = new InternetAddress[];
			for (int len = 0; len < ; len++) {
				if (to[len] != null && to[len].length() > 1) {
					toAddresss[len] = new InternetAddress(to[len]);
				}
			}
			int i = 0;
			while (i < ) {
				if (toAddresss[i] != null) {
					Session mailSession = (props, sa);
					MimeMessage testMessage = new MimeMessage(mailSession);
					(fromAddress);
					(, toAddresss[i]);
					(new ());
					(title);
					(content + "\r\tip:" + getHostIp());
					(testMessage);
					("A mail have been sent to " + to[i]);
				}
				i++;
			}
		} catch (Exception e) {
			("邮件发送失败：");
			();
		}
	}

	public static String getHostIp() {
		String sIP = "";
		InetAddress ip = null;
		try {
			// 如果是Windows操作系统
			if (isWindowsOS()) {
				ip = ();
			}
			// 如果是Linux操作系统
			else {
				boolean bFindIP = false;
				Enumeration<NetworkInterface> netInterfaces = (Enumeration<NetworkInterface>) ();
				while (()) {
					if (bFindIP) {
						break;
					}
					NetworkInterface ni = (NetworkInterface) ();
					// ----------特定情况，可以考虑用判断
					// 遍历所有ip
					Enumeration<InetAddress> ips = ();
					while (()) {
						ip = (InetAddress) ();
						if (() && !() // 127.开头的都是lookback地址
								&& ().indexOf(":") == -1) {
							bFindIP = true;
							break;
						}
					}
				}
			}
		} catch (Exception e) {
		}
		if (null != ip) {
			sIP = ();
		}
		return sIP;
	}

	public static boolean isWindowsOS() {
		boolean isWindowsOS = false;
		String osName = ("");
		if (().indexOf("windows") > -1) {
			isWindowsOS = true;
		}
		return isWindowsOS;
	}

	public static class SmtpAuth extends  {
		private String user, password;

		public void getuserinfo(String getuser, String getpassword) {
			user = getuser;
			password = getpassword;
		}

		protected  getPasswordAuthentication() {
			return new (user, password);
		}
	}
}

最后测试

public static void main(String[] args) {
		("邮箱号@", "邮箱密码", new String[] { "对方邮箱" }, "smtp.", "标题", "文本内容");
	}