拓展：MIME:多用途互联网邮件扩展类型。就是附件
获取QQ邮箱权限
测试代码
package com.jyw;
import com.sun.mail.util.MailSSLSocketFactory;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.security.GeneralSecurityException;
import java.util.Properties;
public class MailDemo01 {
public static void main(String[] args) throws GeneralSecurityException, MessagingException {
Properties prop = new Properties();
prop.setProperty("mail.host", "smtp.qq.com");//设置qq邮件服务器
prop.setProperty("mail.transport.protocol", "smtp");//邮件发送协议
prop.setProperty("mail.smtp.auth", "true");//需要验证用户密码
//关于qq邮箱，还要设置SSL加密，加上以下代码即可
MailSSLSocketFactory sf = new MailSSLSocketFactory();
sf.setTrustAllHosts(true);
prop.put("mail.smtp.ssl.enable", "true");
prop.put("mail.smtp.ssl.socketFactory", sf);
//使用JavaMail发送邮件的5个步骤
//1.创建定义整个应用程序所需的环境信息的Session对象
Session session = Session.getDefaultInstance(prop, new Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
//发送邮件用户名，授权码
return new PasswordAuthentication("2529423851@qq.com", "授权码");
}
});
//通过session的debug模式，这样就可以查看到程序发送Email的运行状态
session.setDebug(true);
//2.通过session得到transport对象
Transport ts = session.getTransport();
//3.使用邮箱的用户名和授权码连上邮件服务器
ts.connect("smtp.qq.com", "2529423851@qq.com", "授权码");
//4.创建邮件:写邮件
//注意需要传递session
Message message = new MimeMessage(session);
//指明邮件的发件人
message.setFrom(new InternetAddress("2529423851@qq.com"));
//指明邮件的收件人，现在发件人2529，收件人416233
message.setRecipient(Message.RecipientType.TO,new InternetAddress("416233049@qq.com"));
//邮件的标题
message.setSubject("只包含文本的简单邮件");
//邮件的文本内容
message.setContent("<h1 style='color:red'>你好啊！</h1>","text/html;charset=UTF-8");
//5.发送邮件
ts.sendMessage(message,message.getAllRecipients());
//6.关闭连接
ts.close();
}
}
package com.jyw;
import com.sun.mail.util.MailSSLSocketFactory;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import java.security.GeneralSecurityException;
import java.util.Properties;
public class MailDemo02 {
public static void main(String[] args) throws GeneralSecurityException, MessagingException {
Properties prop = new Properties();
prop.setProperty("mail.host", "smtp.qq.com");//设置qq邮件服务器
prop.setProperty("mail.transport.protocol", "smtp");//邮件发送协议
prop.setProperty("mail.smtp.auth", "true");//需要验证用户密码
//关于qq邮箱，还要设置SSL加密，加上以下代码即可
MailSSLSocketFactory sf = new MailSSLSocketFactory();
sf.setTrustAllHosts(true);
prop.put("mail.smtp.ssl.enable", "true");
prop.put("mail.smtp.ssl.socketFactory", sf);
//使用JavaMail发送邮件的5个步骤
//1.创建定义整个应用程序所需的环境信息的Session对象
Session session = Session.getDefaultInstance(prop, new Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
//发送邮件用户名，授权码
return new PasswordAuthentication("2529423851@qq.com", "授权码");
}
});
//通过session的debug模式，这样就可以查看到程序发送Email的运行状态
session.setDebug(true);
//2.通过session得到transport对象
Transport ts = session.getTransport();
//3.使用邮箱的用户名和授权码连上邮件服务器
ts.connect("smtp.qq.com", "2529423851@qq.com", "授权码");
//4.创建邮件:写邮件
//注意需要传递session
Message message = new MimeMessage(session);
//指明邮件的发件人
message.setFrom(new InternetAddress("2529423851@qq.com"));
//指明邮件的收件人，现在发件人2529，收件人416233
message.setRecipient(Message.RecipientType.TO,new InternetAddress("2529423851@qq.com"));
//邮件的标题
message.setSubject("只包含文本的简单邮件");
//====================================================================================
//准备图片数据
//图片需要经过数据处理。。。DataHandler：数据处理
MimeBodyPart image=new MimeBodyPart();
DataHandler dh = new DataHandler(new FileDataSource("src/1.jpg"));
image.setDataHandler(dh);//在我们BOdy中放入这个处理的图片数据
image.setContentID("bz.jpg");//给图片设置一个id，我们在后面可以使用，就是后面的cid
//准备正文数据
MimeBodyPart text=new MimeBodyPart();
text.setContent("这是一封邮件正文带图片<img src='cid:bz.jpg'>的邮件","text/html;charset=UTF-8");
//准备附件
// MimeBodyPart body3=new MimeBodyPart();
// body3.setDataHandler(new DataHandler(new FileDataSource("src/resource/log4j.properties")));
// body3.setFileName("log4j.properties");//设置附件名字
//封装数据关系
MimeMultipart mm=new MimeMultipart();
mm.addBodyPart(text);
mm.addBodyPart(image);
mm.setSubType("related");//有附件用mixed
//设置到消息中，保存修改
message.setContent(mm);//把最后编辑好的邮件放到消息当中
message.saveChanges();
//5.发送邮件
ts.sendMessage(message,message.getAllRecipients());
//6.关闭连接
ts.close();
}
}
User实例
package com.jyw.pojo;
import java.io.Serializable;
public class User implements Serializable {
private String username;
private String password;
private String email;
public User() {
}
public User(String username, String password, String email) {
this.username = username;
this.password = password;
this.email = email;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
@Override
public String toString() {
return "User{" +
"username='" + username + '\'' +
", password='" + password + '\'' +
", email='" + email + '\'' +
'}';
}
}
发送工具类
package com.jyw.utils;
import com.jyw.pojo.User;
import com.sun.mail.util.MailSSLSocketFactory;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.security.GeneralSecurityException;
import java.util.Properties;
//网站3s原则：用户体验问题
//超过3秒，用户体验不好
//所以我们使用多线程实现用户体验！（异步处理）
public class Sendemail extends Thread {
//用于给用户发送邮件的邮箱
private String from="2529423851@qq.com";
//邮箱的用户名
private String username="javaWeb";
//邮箱的密码,授权码
private String password="授权码";
//发送邮件的服务器地址
private String host="smtp.qq.com";
private User user=null;
public Sendemail(User user) {
this.user=user;
}
@Override
public void run() {
try {
Properties prop = new Properties();
prop.setProperty("mail.host", host);//设置qq邮件服务器
prop.setProperty("mail.transport.protocol", "smtp");//邮件发送协议
prop.setProperty("mail.smtp.auth", "true");//需要验证用户密码
//关于qq邮箱，还要设置SSL加密，加上以下代码即可
MailSSLSocketFactory sf = new MailSSLSocketFactory();
sf.setTrustAllHosts(true);
prop.put("mail.smtp.ssl.enable", "true");
prop.put("mail.smtp.ssl.socketFactory", sf);
//使用JavaMail发送邮件的5个步骤
//1.创建定义整个应用程序所需的环境信息的Session对象
Session session = Session.getDefaultInstance(prop, new Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
//发送邮件用户名，授权码
return new PasswordAuthentication(from, password);
}
});
//通过session的debug模式，这样就可以查看到程序发送Email的运行状态
session.setDebug(true);
//2.通过session得到transport对象
Transport ts = session.getTransport();
//3.使用邮箱的用户名和授权码连上邮件服务器
ts.connect("smtp.qq.com", from, password);
//4.创建邮件:写邮件
//注意需要传递session
Message message = new MimeMessage(session);
//指明邮件的发件人
message.setFrom(new InternetAddress(from));
//指明邮件的收件人，现在发件人2529，收件人416233
message.setRecipient(Message.RecipientType.TO, new InternetAddress(user.getEmail()));
//邮件的标题
message.setSubject("只包含文本的简单邮件");
//邮件的文本内容
message.setContent("<h1 style='color:red'>恭喜您注册成功，您的用户名:"+user.getUsername()+",您的密码:"+user.getPassword()+",请妥善保管，如有问题请联系网站客服。</h1>", "text/html;charset=UTF-8");
//5.发送邮件
ts.sendMessage(message, message.getAllRecipients());
//6.关闭连接
ts.close();
} catch (MessagingException e) {
e.printStackTrace();
} catch (GeneralSecurityException e) {
e.printStackTrace();
}
}
}
control层
package com.jyw.servlet;
import com.jyw.pojo.User;
import com.jyw.utils.Sendemail;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
//脚手架
public class RegisterServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//接收用户请求，封装成对象
String username = request.getParameter("username");
String password = request.getParameter("password");
String email = request.getParameter("email");
System.out.println(username);
System.out.println(password);
System.out.println(email);
User user = new User(username, password, email);
//用户注册成功之后，给用户发送一封邮件
//我们使用线程来专门发送邮件，防止出现耗时，和网站注册人数过多的情况
Sendemail sendemail=new Sendemail(user);
//启动线程，线程启动之后就会执行run方法来发送邮件
sendemail.start();
//注册用户
request.setAttribute("message","注册成功，我们已经发了一封带了注册信息的电子邮件，请查收");
request.getRequestDispatcher("info.jsp").forward(request,response);
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}
}
前端
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>$Title$</title>
</head>
<body>
<form action="${pageContext.request.contextPath}/RegisterServlet.do" method="post">
用户名：<input type="text" name="username"><br>
密码：<input type="password" name="password"><br>
邮箱： <input type="text" name="email"><br>
<input type="submit" value="注册">
</form>
</body>
</html>
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