spring异步发送邮件

spring 发送邮件

package com.pengm.util;import java.util.Properties;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.mail.SimpleMailMessage;import org.springframework.mail.javamail.JavaMailSenderImpl;/** * 发送告警邮件 *  * @author pengm * */public class MailUtil {    private final static Logger logger = LoggerFactory.getLogger( CustomerAdminController.class );    /**     *      * @param subject 主题     * @param text 内容     */    public static void sendMail( String subject, String text ) {        JavaMailSenderImpl senderImpl = new JavaMailSenderImpl();        senderImpl.setDefaultEncoding( "utf-8" );        // 设定mail server        senderImpl.setHost( "xxxx" );        senderImpl.setPort( 8888 );        // 建立邮件消息        SimpleMailMessage mailMessage = new SimpleMailMessage();        // 设置多人收        String[] users = new String[] { "xxx@com" };        mailMessage.setTo( users );        mailMessage.setFrom( "xxx@com" );        mailMessage.setSubject( subject );        mailMessage.setText( text );        senderImpl.setUsername( "xxx@com" );        senderImpl.setPassword( "xxxx" );        Properties prop = new Properties();        prop.put( "mail.smtp.auth", "true" ); // 将这个参数设为true，让服务器进行认证,认证用户名和密码是否正确        prop.put( "mail.smtp.timeout", "25000" );        senderImpl.setJavaMailProperties( prop );        // 发送邮件        senderImpl.send( mailMessage );        logger.warn( "邮件发送成功..." );    }}

sping 配置 异步模式

1. spring-mvc.xml 配置:需要加入命名空间:

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

http://www.springframework.org/schema/task
http://www.springframework.org/schema/task/spring-task-4.1.xsd

完整配置:

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:task="http://www.springframework.org/schema/task"    xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd           http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd        http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.1.xsd">    <!-- 启用spring mvc 注解 -->    <context:annotation-config />    <!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 -->    <context:component-scan base-package="com.cn21" />    <mvc:annotation-driven>        <mvc:message-converters register-defaults="true">            <!-- 将StringHttpMessageConverter的默认编码设为UTF-8 -->            <bean class="org.springframework.http.converter.StringHttpMessageConverter">                <constructor-arg value="UTF-8" />            </bean>        </mvc:message-converters>    </mvc:annotation-driven>    <!-- 异步模式 -->    <!--异步定义推荐方式  -->      <task:executor id="executor" pool-size="15" />      <task:scheduler id="scheduler" pool-size="30" />      <task:annotation-driven executor="executor" scheduler="scheduler" />      <!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 -->    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />    <!-- <bean        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">        <property name="messageConverters">            <list>                <ref bean="mappingJacksonHttpMessageConverter" /> JSON转换器            </list>        </property>    </bean> -->    <mvc:resources location="/assets/" mapping="/assets/**"/>    <!-- 定义跳转的文件的前后缀 ，视图模式配置 -->    <bean        class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址 -->        <property name="prefix" value="/WEB-INF/views/" />        <property name="suffix" value=".jsp" />    </bean></beans>

AsyncTaskTest:

import org.springframework.scheduling.annotation.Async;import org.springframework.stereotype.Component;import com.pengm.util.MailUtil;@Componentpublic class AsyncTaskTest {    @Async    public void doSomething() throws Exception {        Thread.sleep( 10000 );        System.out.println( "begin doSomthing...." );        doSome();        Thread.sleep( 10000 );        System.out.println( "end doSomthing...." );    }    public static void doSome() {        for( int i = 0; i < 10; i++ ) {            try {                Thread.sleep( 2000 );                System.out.println( i );            }            catch( InterruptedException e ) {                e.printStackTrace();            }        }    }}

adminController:

import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;@Controller@RequestMapping(value="/admin")public class adminController {    @Autowired    AsyncTaskTest asyncTask;    @RequestMapping( "/test" )    @ResponseBody    public String asynTest() {        try {            System.out.println( "我开始执行了！" );            asyncTask.doSomething();            System.out.println( "我执行结束了！" );        }        catch( Exception e ) {            e.printStackTrace();        }        return "account/index";    }}

后台打印结果：

我开始执行了！
我执行结束了！
begin doSomthing….
0
1
2
3
4
5
6
7
8
9
end doSomthing….

注意:

• 异步方法和调用类不要在同一个类中
• 注解扫描时，要注意过滤，避免重复实例化，因为存在覆盖问题，@Async就失效了