java结合email实现自动推送功能

1、获取表中最后一条数据

public static String demo() throws SQLException { String sql = 'select * FROM baoxiu ORDER BY id DESC LIMIT 0,1;'; PreparedStatement ptmt = conn.prepareStatement(sql); ResultSet rs = ptmt.executeQuery(); String str=null; if(rs.next()) { str= rs.getString('bt'); } return str; }

2、使用模糊查询，获取符合条件的所有数据

public static List<DuibiModel> getBaoX(String bt) throws SQLException { String sql = 'select bt,`user`.cardid,phone FROM baoxiu,`user` WHERE baoxiu.cardid=`user`.cardid AND bt LIKE ’%'+bt+'%’'; PreparedStatement ptmt = conn.prepareStatement(sql); ResultSet rs = ptmt.executeQuery(); List<DuibiModel> list = new ArrayList<>() ; while(rs.next()) { DuibiModel duibi=new DuibiModel(); duibi.setBt(rs.getString('bt')); duibi.setCardid(rs.getString('cardid')); duibi.setPhone(rs.getString('phone')); list.add(duibi); } return list; }

3、Java 发送邮件

import javax.mail.Authenticator;import javax.mail.PasswordAuthentication; public class Auth extends Authenticator { private String username = ''; private String password = ''; public Auth(String username, String password) { this.username = username; this.password = password; } public PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(username, password); } }import java.util.Properties;import javax.mail.Message;import javax.mail.Session;import javax.mail.Transport;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeMessage;public class SendMail { private Properties props; //系统属性 private Session mailSession; //邮件会话对象 private MimeMessage mimeMsg; //MIME邮件对象 public SendMail(String SMTPHost, String Port, String MailUsername, String MailPassword) { Auth au = new Auth(MailUsername, MailPassword); //设置系统属性 props=java.lang.System.getProperties(); //获得系统属性对象 props.put('mail.smtp.host', SMTPHost); //设置SMTP主机 props.put('mail.smtp.port', Port); //设置服务端口号 props.put('mail.smtp.auth', 'true'); //同时通过验证 //获得邮件会话对象 mailSession = Session.getInstance(props, au); } public boolean sendingMimeMail(String MailFrom, String MailTo, String MailCopyTo, String MailBCopyTo, String MailSubject, String MailBody) { try { //创建MIME邮件对象 mimeMsg=new MimeMessage(mailSession); //设置发信人 mimeMsg.setFrom(new InternetAddress(MailFrom)); //设置收信人 if(MailTo!=null){ mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(MailTo)); } //设置抄送人 if(MailCopyTo!=null){ mimeMsg.setRecipients(javax.mail.Message.RecipientType.CC,InternetAddress.parse(MailCopyTo)); } //设置暗送人 if(MailBCopyTo!=null){ mimeMsg.setRecipients(javax.mail.Message.RecipientType.BCC,InternetAddress.parse(MailBCopyTo)); } //设置邮件主题 mimeMsg.setSubject(MailSubject,'utf-8'); //设置邮件内容，将邮件body部分转化为HTML格式 mimeMsg.setContent(MailBody,'text/html;charset=utf-8'); //发送邮件 Transport.send(mimeMsg); return true; } catch (Exception e) { e.printStackTrace(); return false; } }}public static boolean email(String email,String str) { String SMTPHost='smtp.qq.com'; String Port='25'; String MailUsername='gkh35@foxmail.com'; //直接用我的邮件进行发送测试 String MailPassword='wggddlvcrqfubhde'; //密码请勿修改 SendMail sendMail=new SendMail(SMTPHost,Port,MailUsername,MailPassword); String MailFrom='gkh35@foxmail.com'; //发件人 String MailTo=email; //收件人 String MailCopyTo=null; //抄送人 String MailBCopyTo=null; //暗送人 String MailSubject='发现类似商品'; //邮件主题 String MailBody=str; //邮件内容 //发送邮件 boolean isSend=sendMail.sendingMimeMail(MailFrom, MailTo, MailCopyTo, MailBCopyTo, MailSubject, MailBody); return isSend;}

4、main方法

public static void main(String[] args) throws SQLException { boolean flag = false; String str=demo(); for(DuibiModel duibiModel : getBaoX(str)) { System.out.println('名称为:'+duibiModel.getBt()+','+'身份证号：'+duibiModel.getCardid()+','+'电话号码为：'+duibiModel.getPhone()); flag=email('gkh8299@gmail.com', duibiModel.getBt()); } if(flag) { System.out.println('邮件发送成功'); }else { System.out.println('邮件发送失败'); }}

总结

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