tomcat spring定时功能
新建quartz.xml 配置文件
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean name="updateDB"
class="org.springframework.scheduling.quartz.JobDetailBean">
<property name="jobClass">
<value>com.travelsky.channelconn.adapter.XiRuanHotels.RateAmountSync</value>
</property>
<property name="jobDataAsMap">
<MAP>
<ENTRY key="readXmlService ">
<REF bean="readXmlService"></REF>
</ENTRY>
</MAP>
</property>
</bean>
<bean id="XiRuanCronTrigger"
class="org.springframework.scheduling.quartz.CronTriggerBean">
<property name="jobDetail">
<ref bean="updateDB" />
</property>
<property name="cronExpression">
<!-- 每天15:49分取数据 -->
<value>0 49 15 * * ?</value>
</property>
</bean>
<bean id="scheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="triggers">
<ref local="XiRuanCronTrigger"></ref>
</property>
</bean>
</beans>
<map>结点,这里主要是为了在定时任务需要使用到Bean,通过 Spring给注入进来,如果不写明,就会报
java.lang.NullPointerException错误,主要是因为没有注入Bean
将该xml加入到web的加载目录即可
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath:quartz.xml
classpath:applicationMonitorContext.xml
</param-value>
</context-param>
使用spring quartz功能
需要加入quartz,common-lang等四个JAR包
新建类实现接口QuartzJobBean的方法executeInternal
public class RateAmountSync extends QuartzJobBean {
public static String htlCode;
private readXmlService readXmlService;
@Override
protected void executeInternal(JobExecutionContext context) throws JobExecutionException {
// TODO Auto-generated method stub
if(Sync())
logger.info("同步信息成功");
else
logger.info("同步价格失败");
}
}
注意:在Spring配置和 Quartz集成内容时,有两点需要注意
1、在<Beans>中不能够设置default-lazy-init="true",否则定时任务不触发,如果不明确指明default-lazy-init的值,默认是false。
2、在<Beans>中不能够设置 default-autowire="byName"的属性,否则后台会报 org.springframework.beans.factory.BeanCreationException错误,这样就不能通过Bean名称自动注入,必须通过明确引用注入。