使用java的spring定时执行任务

我会带着你远行 2022-06-05 23:07 202阅读 0赞

流程:

1.配置web.xml中spring的核心控制器

2.在spring的xml文件中注入定时器,并关联你的逻辑层

3.设置需要执行的时间策略.

第一步:

<listener>
    		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    	</listener>
    
    	
    	<context-param>
    		<param-name>contextConfigLocation</param-name>
    		<param-value>classpath*:config/spring-*.xml</param-value>
    	</context-param>
    
    	
    	<servlet>
    		<servlet-name>springMVC</servlet-name>
    		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    		  
    		<init-param>
    			<param-name>contextConfigLocation</param-name>
    			<param-value>classpath*:config/spring-mvc.xml</param-value>
    		</init-param>
    		  
    		<load-on-startup>1</load-on-startup>
    	</servlet>
    
    	
    	<servlet-mapping>
    		<servlet-name>springMVC</servlet-name>
    		
    		<url-pattern>/</url-pattern>
    	</servlet-mapping>
    
    	
    	<listener>
    		<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
    	</listener>

第二步:

<bean id="mytask" class="com.qs.timer.myQuarzt" />
        
        <bean id="mytaskDitail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
        	<property name="targetObject" ref="mytask" />
        	<property name="targetMethod" value="doit" />
        </bean>
        
        <bean id="timeTigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
        	<property name="mytaskDetail" ref="mytaskDitail" />
        	<property name="cronExpression" value="10 0 0 * * ?" />
        </bean>
        
        <bean id="startJob" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
        	<property name="triggers">
        		<list>
        			<ref bean="timeTigger" />
        		</list>
        	</property>
        </bean>

目前代码设置的自动执行任务的时间是每天的0点0分10秒

第三步:

import java.text.SimpleDateFormat;
    import java.util.Date;
    
    import javax.annotation.Resource;
    
    import org.quartz.JobExecutionException;
    
    import com.qs.service.sportService;
    
    public class myQuarzt {
    	
    	@Resource
    	private xxService xxservice;
    	
    	public void doit()throws JobExecutionException{
    		System.setProperty("user.timezone","GMT+8");
    		System.out.println("动态时间:"+new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
    		//执行数据库删除冗余数据操作
    		int flag = this.xxservice.delExpirationDate();
    	}
    
    }

最后执行mybatis.xml执行sql语句成功删除数据

DELETE from table1 where substring(theday, 4)<curdate()          theday时间格式为   周二,2017-10-24   所以要使用截取字符串函数

以上就是spring定时器的简单使用示例.

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