Spring-定时器和邮件发送

一、定时器的实现（task）

　　1、在XML配置文件中引入约束

　　　　xmlns:task="http://www.springframework.org/schema/task"

　　　　http://www.springframework.org/schema/task

　　　　http://www.springframework.org/schema/task/spring-task.xsd

　　

　　2、编写定时器类，和方法

　　3、使用xml配置文件

　　　　

　　　　加载配置文件就可以执行定时任务了，图为两秒执行一次。

二、邮件发送

　　1、Java mail发送邮件

　　　　1) Maven项目引入java mail坐标，也可以手动安装

　　　　

package com.shsxt.service;

import org.apache.commons.lang3.StringUtils;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.*;
import javax.mail.internet.*;
import java.io.File;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.util.Properties;

public class MailService {

    public void mail(String fromUser, String[] receivers, String setSubject, String content, String[] files) {
        // 判断参数是否为空
        if (!judgment(fromUser, receivers, setSubject, content)){
            return;
        }
        // 获取session
        Session session = init(fromUser);
        Message message = new MimeMessage(session);
        // 发送人
        sender(fromUser, message);
        // 收件人
        recipients(receivers, message);
        // 主题
        subject(message,setSubject);
        // 设置html和附件
        Multipart multipart = new MimeMultipart();
        // html内容
        Content(content, multipart);
        // 判断是否有附件
        if (null != files && files.length > 0) {
            // 上传附件
            fileUp(files, multipart);
        }
        settingContext(message, multipart);
        // 发送
        send(message);
    }

    // 8、发送
    private void send(Message message) {
        try {
            Transport.send(message);
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }

    // 7、设置上下文
    private void settingContext(Message message, Multipart multipart) {
        try {
            message.setContent(multipart);
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }


    // 6、设置主题
    private void subject(Message message,String setSubject) {
        try {
            message.setSubject(setSubject);
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }

    // 5、上传附件
    private void fileUp(String[] files, Multipart multipart) {
        try {
            for (String filePath : files) {
                BodyPart file = new MimeBodyPart();
                File temp = new File(filePath);
                file.setDataHandler(new DataHandler(new FileDataSource(new File(filePath))));
                file.setFileName(MimeUtility.encodeText(temp.getName()));
                multipart.addBodyPart(file);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    // 4、设置html内容
    private void Content(String content, Multipart multipart) {
        try {
            BodyPart html = new MimeBodyPart();
            html.setContent(content, "text/html;charset=utf-8");
            multipart.addBodyPart(html);
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }

    // 3、设置收件人
    private void recipients(String[] receivers, Message message) {
        try {
            Address[] addresses = new InternetAddress[receivers.length];
            for (int i = 0; i < addresses.length; i++) {
                addresses[i] = new InternetAddress(receivers[i]);
            }
            message.setRecipients(Message.RecipientType.TO, addresses);
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }

    // 2、设置发送人
    private void sender(String fromUser, Message message) {
        try {
            Address from = new InternetAddress(fromUser);
            message.setFrom(from);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    // 1、初始化
    private Session init(String fromUser) {
        Properties properties = new Properties();
        // 邮箱服务器主机
        properties.put("mail.smtp.host", "smtp.163.com");
        properties.put("mail.smtp.auth", "true");
        properties.put("mail.smtp.port", 25);

        Session session = Session.getDefaultInstance(properties, new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("15657262398@163.com", "d140120");
            }
        });
        return session;
    }

    // 0、判断参数是否为空
    private boolean judgment(String fromUser, String[] receivers, String setSubject, String content) {
        boolean flag = true;
        if (StringUtils.isBlank(fromUser) || StringUtils.isAnyBlank(receivers) || StringUtils.isBlank(setSubject) || StringUtils.isBlank(content)) {
            flag = false;
        }
        return flag;
    }


}

　　2、spring环境下发送邮件

　　　　XML配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="com.mail"/>

    <bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
        <property name="host" value="smtp.163.com"/><!--发送email的邮件服务器主机名-->
        <property name="username" value="test@163.com"/><!--用户名-->
        <property name="password" value="test"/><!--授权码-->
    </bean>
    <bean id="simpleMailMessage" class="org.springframework.mail.SimpleMailMessage">
        <property name="subject" value="hello mail"/>
        <property name="from" value="15657262398@163.com"/>
    </bean>
</beans>

　　　　

　　　　装配和使用邮件发送器

package com.mail;

import org.springframework.mail.MailSender;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
@Service
public class OrderManagerImpl implements OrderManager {

    @Resource
    private MailSender mailSender;
    @Resource
    private SimpleMailMessage simpleMailMessage;

    @Override
    public void placeOrder() {
        SimpleMailMessage msg=new SimpleMailMessage(this.simpleMailMessage);
        msg.setTo("test@163.com");
        msg.setText("hello");
        this.mailSender.send(msg);
    }
}