emailsendservlet.java

一个JSPServerlet编写的

package regetemail;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
import java.util.Properties;

public class EmailSendServlet extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=GBK";

    //Initialize global variables
    public void init() throws ServletException {
    }

    //Process the HTTP Get request
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        response.setContentType(CONTENT_TYPE);
        PrintWriter out = response.getWriter();
        DataBaseOptor dbop = new DataBaseOptor();
        try {
            request.setCharacterEncoding("GBK");
            String userName = request.getParameter("username").trim();
            String userEmail = request.getParameter("useremail").trim();
            System.out.println(userName);

            if (!(userName == null && userName.equals(""))
                && !(userEmail == null && userEmail.equals(""))) {
                System.out.println(userName);
                if (dbop.userPwdonEmail(userName, userEmail)) {
                    System.out.println(userName);
                    //处理并发送邮件给用户
                    String smtpServer = "127.0.0.1"; //服务器名
//                    String emailTo = request.getParameter("useremail");
                    String emailTo = "[e-mail]";
                    String fromEmail = "[e-mail]";
                    String subject = "用户" + request.getParameter("username") + "：您的密码";
                    String body = dbop.getUserPassword();

                    try {
                        System.out.println(userName);
                        Properties props = new Properties();
                        props.put("mail.transport.protocol", "smtp");
                        props.put("mail.smtp.host", smtpServer);
                        props.put("mail.smtp.port", "25");
                        Session mailsession = Session.getInstance(props);
                        Message msg = new MimeMessage(mailsession);
                        msg.setFrom(new InternetAddress(fromEmail));
                        msg.setRecipients(Message.RecipientType.TO,
                                          InternetAddress.parse(emailTo));
                        msg.setSentDate(new Date());
                        msg.setSubject(subject);
                        msg.setText(body);
                        Transport.send(msg);
                        msg.writeTo(System.out);
                        out.println("<h4>邮件已经发送到：" + emailTo+"</h4>");
                        out.println("<br />");
                        out.println("<a href=\"loginservlet\">继续登录</a>");
                        out.close();
                    } catch (Exception cex) {
                        System.out.println("发送邮件异常：" + cex.getMessage());
                    }
                }
                else {
                    out.println("<h3>此邮件不是该用户的安全邮件！</h3><br />");
                    out.println("<br />");
                    out.println("<a href=\"loginservlet\">返回</a>");
                    out.close();
                }
            }else
            {
                out.println("<h3>请填写完整！用户名和邮件不能为空。</h3><br />");
                out.println("<br />");
                out.println("<a href=\"tomailservlet\">返回</a>");
                out.close();

            }
        } catch (Exception ex) {
            System.out.println("验证用户是否与邮箱一致异常：\n" + ex.getMessage());
        }

    }

    //Process the HTTP Post request
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        doGet(request, response);
    }


    //Clean up resources
    public void destroy() {
    }
}