关于java模拟邮箱发送邮件的设计与实现

项目中有个用javaweb程序发邮件的功能，鉴于之前没有接触过，记录下来，勉鉴自己，也给别人一个借鉴。

思路：java web程序发送邮件的功能是基于几个jar包实现的。

1. 需要的jar
点击下载

activation.jar

mail.jar

2. 由于jdk中已经封装了这两个包，所以再次引用的话会有冲突，需要在jdk中删这两个包

我本地文件地址：

D:\Program Files(x86)\Genuitec\Common\plugins\com.genuitec.eclipse.j2eedt.core_8.6.0.me201007292038\data\libraryset\EE_5



用解压软件打开删除这两个文件，不然程序执行的时候会有错误，具体的错误按情况分析



 

3. 编写jsp页面



4. 编写servlet

package com.sdjxd.mail;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Properties;

import javax.mail.Address;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
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;

public class Jmail extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doPost(request, response);
}

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

request.setCharacterEncoding("UTF-8");

String host = request.getParameter("host");
String sendName = request.getParameter("sendName");
String hostLast = request.getParameter("hostLast");
String sendPasswd = request.getParameter("sendPasswd");
String receiver = request.getParameter("receiver");
String subject = request.getParameter("subject");
String content = request.getParameter("content");

System.out.println(host+" , "+sendName+" , "+sendPasswd+" , "+receiver+" , "+subject+" , "+content);

Properties props = new Properties();
props.put("mail.smtp.host", host);
props.put("mail.smtp.auth", "true");
try {
PopupAuthenticator auth = new PopupAuthenticator(sendName,sendPasswd);
Session session = Session.getInstance(props, auth);
//显示debug调试信息
session.setDebug(true);
MimeMessage message = new MimeMessage(session);
Address addressFrom = new InternetAddress(
auth.mailuser + hostLast, "");
Address addressTo = new InternetAddress(receiver, "");
//邮件内容
message.setText(content);
//邮件主题
message.setSubject(subject);
//发件人地址
message.setFrom(addressFrom);
//收件人地址
message.addRecipient(Message.RecipientType.TO, addressTo);
message.saveChanges();
Transport transport = session.getTransport("smtp");
transport.connect(host, auth.mailuser,
auth.password);
transport.send(message);
transport.close();
//发送成功
System.out.println("sent suc");

response.setContentType("text/html; charset=UTF-8");
response.getWriter().print("邮件发送成功 3秒后跳转");

response.setHeader("Refresh","3;URL=index.jsp");
//response.sendRedirect("index.jsp");
} catch (Exception e) {
System.out.println(e.toString());
System.out.println("sent fail");

response.getWriter().print("邮件发送失败 3秒后跳转");
response.getWriter().print(e.toString());
response.setHeader("Refresh","3;URL=index.jsp");
}
}
}

class PopupAuthenticator extends Authenticator {
public String mailuser = "";
public String password = "";

public PopupAuthenticator(String mailuser,String password){
this.mailuser = mailuser;
this.password = password;
}

public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(mailuser, password);
}
}

5. 部署项目测试

 

小结：具体邮件的api没有研究，但是程序是测试可以成功。在测试的过程中不同的邮箱服务器，发件人的邮箱需要额外的一些设置，比如QQ邮箱需要设置，开启POP3/SMTP服务



163邮箱在测试的时候，新注册的邮箱是不能发送邮件的，新注册的邮箱什么时候可以发送没有具体咨询，但是之前经常使用的邮箱是可以发送邮件的。

附件资源下载