javamail发送邮件（超链接返回web后台）

package control; import java.io.IOException; import java.util.Date; import java.util.Properties; import javax.mail.Address; import javax.mail.Authenticator; import javax.mail.Message.RecipientType; import javax.mail.MessagingException; import javax.mail.Transport; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import bean.MyAuthenticator; public class RegisterServlet extends HttpServlet { private static final long serialVersionUID = 1L; public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // 获取前台用户输入的邮箱以及用户名 String toMail = request.getParameter("email"); String registerName = request.getParameter("userName"); // 创建一个临时用户注册ID String registerId = "" + Math.random() * Math.random(); // 邮件发送成功后，用户点在邮箱中点击这个链接回到注册网站。 String url = "http://localhost:8080/JavaMailChecker/servlet/MailBackServlet?registerId=" + registerId; // 设置session值，将用户ID和用户名保存在session值中 HttpSession httpSession = request.getSession(); httpSession.setAttribute(registerId, registerName); // 设置session的有效时间，为10分钟，10分钟内没有点击链接的话，注册将失败` httpSession.setMaxInactiveInterval(600); // 设置邮箱的属性 Properties props = new Properties(); // 若发送者的邮箱为其他服务器，例如163邮箱的话，就将下面服务器的值改为smtp.163.com props.setProperty("mail.smtp.host", "smtp.263.net"); props.setProperty("mail.smtp.auth", "true"); // 设置验证值，发送者的邮箱要通过验证才可以发送邮件 // 设置发送者的邮箱和密码，对其进行修改 String userName = ""; String password = ""; Authenticator authenticator = new MyAuthenticator(userName, password); javax.mail.Session session = javax.mail.Session.getDefaultInstance( props, authenticator); session.setDebug(true); try { Address from = new InternetAddress(userName); Address to = new InternetAddress(toMail); MimeMessage msg = new MimeMessage(session); msg.setFrom(from); msg.setSubject("###网站注册###"); msg.setSentDate(new Date()); msg.setContent("点击<a href='" + url + "'>" + url + "</a>完成注册！", "text/html;charset=utf-8"); msg.setRecipient(RecipientType.TO, to); Transport.send(msg); } catch (MessagingException e) { e.printStackTrace(); } request.getRequestDispatcher("/sendMailSuccess.jsp").forward(request, response); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }