spring的定时任务配置（注解）

参考博客：

http://www.jb51.net/article/110541.htm

http://blog.csdn.net/wxwzy738/article/details/25158787

我这边项目的需求是：每天晚上1点删除数据库表t_tempclob中的所有记录；

代码：

Controller：

@Controller
public class AjaxFileDownload {

    private static Logger logger = Logger.getLogger(AjaxFileDownload.class);

    @Autowired
    private ProductService productService;

    @Autowired
    private TempClobService tcService;

    /**
     * 定时任务，每天晚上1点删除数据表t_tempClob中的所有记录
     */
    @Scheduled(cron= "0 0 1 * * ?")
    public void deleteAllTempClob(){
        int count = tcService.deleteAllTempClob();
        System.err.println("---->>deleteAllTempClob删除数据库记录数:" + count);
    }
}

Service：

/**
     * 删除所有大文本
     */
    public int deleteAllTempClob(){
        int count = 0;
        try {
            count = tcMapper.deleteAllTempClob();
        } catch (Exception e) {
            e.printStackTrace();
        }

        return count;
    }

Mapper接口：

public interface TempClobMapper {

    /**
     * 删除所有的大文本
     */
    public int deleteAllTempClob() throws Exception;
}

Mapper.xml：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.cy.dao.TempClobMapper" >

    <!-- 删除所有的大文本 -->
    <delete id="deleteAllTempClob">
        delete from t_tempclob
    </delete>

</mapper>

spring-mvc.xml中关于task的配置：

<?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:mvc="http://www.springframework.org/schema/mvc"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:jee="http://www.springframework.org/schema/jee"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:task="http://www.springframework.org/schema/task"
    xsi:schemaLocation="
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
        http://www.springframework.org/schema/task
        http://www.springframework.org/schema/task/spring-task-3.0.xsd">  

<!-- 使用注解的包，包括子集 -->
    <context:component-scan base-package="com.cy.controller" />

 <!-- 定时器开关-->
     <task:annotation-driven />

</beans>  

cron表达式详解、举例子：

https://www.cnblogs.com/javahr/p/8318728.html

cron表达式说明：

参考博客：http://www.jb51.net/article/110541.htm