web自动发送邮件

           首先，要想自动发邮件必须有一个jar包：com.sun.mail:javax.mail:1.4.7

          然后要实现一个java工具类，以方便以后使用：

emainUtils：

public void sendMessage(String smtpHost, String from, String fromUserPassword, String to, String subject,

String messageText, String messageType) throws MessagingException {

Properties props = new Properties();

props.put("mail.smtp.host", smtpHost);

props.put("mail.smtp.auth", "true"); // 使用验证

Session mailSession = Session.getInstance(props, new MyAuthenticator(from, fromUserPassword));

InternetAddress fromAddress = new InternetAddress(from);

InternetAddress toAddress = new InternetAddress(to);

MimeMessage message = new MimeMessage(mailSession);

message.setFrom(fromAddress);

message.addRecipient(RecipientType.TO, toAddress);

message.setSentDate(Calendar.getInstance().getTime());

message.setSubject(subject);

message.setContent(messageText, messageType);

// 第三步：发送消息

// Transport transport = mailSession.getTransport("smtp");

// transport.connect(smtpHost, from, fromUserPassword);

Transport.send(message, message.getRecipients(RecipientType.TO));

}

private class MyAuthenticator extends Authenticator {

String userName = "";

String password = "";

public MyAuthenticator(String userName, String password) {

this.userName = userName;

this.password = password;

}

protected PasswordAuthentication getPasswordAuthentication() {

return new PasswordAuthentication(userName, password);

}

}

在controller层：

String code = "www.baidu.com";//内容

String content = Constants.EMAIL_PASS[1] + code + Constants.EMAIL_PASS[2];

new EmailUtil().sendMessage(GlobalVars.email_host, GlobalVars.email_username, GlobalVars.email_password,

bought.getAccount()//要发送的账号, Constants.EMAIL_PASS[0]//标题, content, GlobalVars.email_type);

在Constants中：

public static final String[] EMAIL_PASS={"通过审核","登陆地址:","\n如有疑问，请咨询客服！"};

在GlobalVars中：

public static String email_host;

public static String email_username;

public static String email_password;

public static String email_type;

GlobalVars.email_host = properties.getProperty("email_host").trim();

GlobalVars.email_type = properties.getProperty("email_type").trim();

GlobalVars.email_username = properties.getProperty("email_username").trim();

GlobalVars.email_password = properties.getProperty("email_password").trim();

在配置文件中写这四个参数：

email_host=smtp.abc@163.com//前面必须要smtp.

email_username=“”//账号

email_password=“”//密码

email_type=text/html;charset=UTF-8

之后在controller层中添加业务逻辑后，响应后会从abc@163.com网站中自动登陆，将要发送的内容发送给账号(bought.getAccount())。