spring定时器配置+发送邮件

利用spring定时器发送定时邮件

原创 2015年10月16日 16:56:15

• 标签：
• spring /
• 邮件 /
• java

参考地址：http://blog.csdn.net/hyf_javatest/article/details/49179997

参考地址：http://blog.csdn.net/zml_2015/article/details/55004041

参考地址：https://www.cnblogs.com/obullxl/archive/2011/07/10/spring-quartz-cron-integration.html

Spring集成Quartz定时任务框架介绍和Cron表达式详解

在JavaEE系统中，我们会经常用到定时任务，比如每天凌晨生成前天报表，每一小时生成汇总数据等等。
我们可以使用java.util.Timer结合java.util.TimerTask来完成这项工作，但时调度控制非常不方便，并且我们需要大量的代码。
使用Quartz框架无疑是非常好的选择，并且与Spring可以非常方便的集成，下面介绍它们集成方法和Cron表达式的详细介绍。

一、增加所依赖的JAR包
1、增加Spring的Maven依赖

< dependency > < groupId > org.springframework groupId > < artifactId > spring-webmvc artifactId > < version > 4.3.6.RELEASE version > dependency >

2、增加Quartz的Maven依赖

< dependency > < groupId > org.quartz-scheduler groupId > < artifactId > quartz artifactId > < version > 2.2.3 version > dependency >

spring 的org.springframework.mail包提供的对邮件的支持。

1.封装一个方法用于发送邮件的方法：

package com.ql.v2.utils;

import java.util.Properties;
import javax.mail.internet.MimeMessage;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
/**
 isValate:是否校验（或者授权）：true
 to：邮件接收者地址数组。：{"***@qq.com","***@qq.com"}，因为是数组所以支持群发。
 subject:邮件主题
 context：邮件内容
 */
     public static void sendEmails( String isValate, String[] to, String subject, String context) throws Exception {
        //邮件服务器的配置信息
        JavaMailSenderImpl senderImpl = new JavaMailSenderImpl();
        senderImpl.setHost("smtp.exmail.qq.com");//发件服务器HOST
        // 根据自己的情况,设置username
        senderImpl.setUsername("***");//发件人名称
        // 根据自己的情况, 设置password
        senderImpl.setPassword("***");//发件邮箱密码

        Properties pp = new Properties();
        pp.put("mail.smtp.auth", isValate);//是否校验（或者授权）：true
        senderImpl.setJavaMailProperties(pp);

        // 获取邮件的样板
        SimpleMailMessage msg = new SimpleMailMessage();
        msg.setFrom("[email protected]");// 发邮件邮箱
        msg.setTo(to);
        msg.setSubject(subject);// 邮件主题
        msg.setText(context);

        MimeMessage mimeMsg = senderImpl.createMimeMessage();
        MimeMessageHelper helper = new MimeMessageHelper(mimeMsg, true, "UTF-8");
        helper.setTo(msg.getTo());//邮件接收地址
        helper.setSubject(msg.getSubject());//邮件主题
        helper.setFrom(msg.getFrom(), "别名");//邮件发送人-别名
        helper.setText(msg.getText(), true);//邮件内容
        senderImpl.send(mimeMsg);//发送邮件
    }

2.定义一个发送邮件的定时类

package com.ql.v2.controller.tasks;

import java.io.File;
import org.apache.commons.io.FileUtils;
import org.springframework.core.io.ClassPathResource;
import com.ql.v2.utils.SendEmailUtil;

/**
 * 自动统计类
 * @author huayafei
 *
 */
public class AutoStatisticsTask {
    /**
     * 自动统计微信端定存宝、活期宝的投资金额与人数信息。
     */
    public void autoStatisticWxInfo(){
        try {
            //读取文件，然后发送邮件。
            ClassPathResource resource=new ClassPathResource("/");
            String filepath=resource.getFile().getParent()+"/other_pages/statistic.html";
            //利用oapche提供的方法把一个文件读取成字符串
            String html=FileUtils.readFileToString(new File(filepath),"UTF-8");
            /*
             * 群发邮件
             */
            String isValate = "true";//邮件授权
            String[] to = {"***@qinlian.me","***@qq.com"};//收件人
            String subject = "微信端投资统计记录";//邮件主题
            //调用发送邮件的方法
            SendEmailUtil.sendEmails(isValate, to, subject, html);
        } catch (Exception e) {
            throw new RuntimeException(e.getMessage(),e);
        }
    }
}

3.设置spring配置文件定时调用发送邮件的方法。

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"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd">


    <bean id="schedulerFactory" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
        <property name="triggers">
            <list>
                <ref bean="autoStatistics_time" />
            list>
        property>
    bean>


    <bean id="autoStatisticsTask" class="com.ql.v2.controller.tasks.AutoStatisticsTask"/>


    <bean id="autoStatisticsTaskProperties" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
        <property name="targetObject" ref="autoStatisticsTask">property>
        <property name="targetMethod" value="autoStatisticWxInfo">property>
        <property name="concurrent" value="false">property>
    bean>


    <bean id="autoStatistics_time" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
        <property name="jobDetail" ref="autoStatisticsTaskProperties">property>
        <property name="cronExpression" value="0 0/1 * * * ?">property>
    bean>
beans>

sping配置文件关联图解：

spring4.3.6与quartz 2.2.3集成出现以下问题

Caused by: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [org.springframework.scheduling.quartz.CronTriggerBean] for bean with name 'articleBatchRunTrigger' defined in class path resource [spring-quartz.xml]; nested exception is java.lang.ClassNotFoundException: org.springframework.scheduling.quartz.CronTriggerBean
    at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1385)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:641)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:609)
    at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1484)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:425)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:403)
    at org.springframework.beans.factory.BeanFactoryUtils.beanNamesForTypeIncludingAncestors(BeanFactoryUtils.java:220)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1260)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1101)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585)
    ... 15 more
Caused by: java.lang.ClassNotFoundException: org.springframework.scheduling.quartz.CronTriggerBean
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    at org.springframework.util.ClassUtils.forName(ClassUtils.java:250)
    at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:401)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1432)
    at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1377)
    ... 25 more

实际上是因为quartz的配置信息用的是旧版本、而依赖的确是高版本的jar包

在quartz 1.8.6及以前版本的时候 调度触发器 依赖的类是 org.springframework.scheduling.quartz.CronTriggerBean

在2.xx版本之后就改为了org.springframework.scheduling.quartz.CronTriggerFactoryBean

因此当你依赖2.x.x版本之后只需将调度触发器的依赖类改为 org.springframework.scheduling.quartz.CronTriggerFactoryBean即可