JSP中用Java Mail发送和接收邮件

一、设置环境

    1、下载并构建Java Mail API

            下载网址：http://java.sun.com/products/javamail/downloads/index.html

            解压后将mail.jar放到实例程序的WEB-INF/lib目录下

    2、下载并构建JAF

           下载网址：http://java.sun.com/products/javabeans/jaf/downloads/index.html

           解压后将activation.jar放到实例程序WEB-INF/li目录下

二、发送普通文本邮件

        <%@ page contentType="text/html;charset=gb2312" language="java" errorPage="" %>

        <%@ page import="java.util.*" %>

        <%@ page import="javax.mail.*" %>

        <%@ page import="javax.mail.internet.*" %>

        <%@ page import="javax.activation.*" %>

        <%

               try{

                     request.setCharacterEncoding("gb2312");

                     String from=request.getParameter("from");

                     String to=request.getParameter("to");

                     String subject=request.getParameter("subject");

                     String messageText=request.getParameter("content");

                     String password=request.getParameter("password");

                     //生成SMTP的主机名称

                     int n=from.indexOf('@');

                     int m=from.length();

                     String mailserver="smtp."+from.subString(n+1, m);

                     // String servername="smtp.sina.com";

                     // 建立邮件会话

                     Properties pro=new Properties();

                     pro.put("mail.smtp.host", mailserver);

                     pro.put("mail.smtp.auth", "True");

                     Session sess=Session.getInstance(pro);

                     sess.setDebug(True);

                     //新建一个消息对象

                     MimeMessage message=new MimeMessage(sess);

                     // 设置发件人

                     InternetAddress from_mail=new InternetAddress(from);

                     message.setFrom(from_mail);

                     // 设置收件人

                     InternetAddress to_mail=new InternetAddress(to);

                     message.setRecipient(Message.RecipientType.TO, to_mail);

                     // 设置主题

                     message.setSubject(subject);

                     // 设置内容

                     message.setText(messageText);

                     // 设置发送时间

                      message.setSentDate(new Date());

                      // 发送邮件

                      message.saveChanges();  //保证报头域同会话内容保持一致

                      Transport transport=sess.getTransport("smtp");

                      transport.connect(mailserver, from, password);

                      transport.sendMessage(message, message.getAllRecipients());

                      transport.close();

                      out.println("<script language='javascript'> alert('Email be sent!'); window.location.href='index.jsp';</script>");

              }catch(Exception e){

                      System.out.println(e.getMessage());

                      out.println("<script language='javascript'>alert('Email not be sent!'); window.location.href='index.jsp';</script>");

              }

        %>