我一直在阅读有关java / spring / hibernate的内容并通过“虚拟”示例工作,所以我告诉我的朋友为我推荐一些更难的东西,现在我被卡住了......这是最简单的类我可以想到
package spring.com.practice;
public class Pitcher {
private String shout;
public String getShout() {
return shout;
}
public void setShout(String shout) {
this.shout = shout;
}
public void voice()
{
System.out.println(getShout());
}
}
通过从spring bean调用metod voice()
来打印出来的最简单的方法是什么,并且每隔30秒重复一次就可以说,这就是我到目前为止所做的:
<bean id="simpleTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerBean">
<property name="jobDetail" ref="jobSchedulerDetail" />
<property name="startDelay" value="0" />
<property name="repeatInterval" value="30" />
</bean>
<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="schedulerName" value="pitcherScheduler" />
<property name="triggers">
<list>
<ref bean="simpleTrigger" />
</list>
</property>
</bean>
<bean id="pitcher" class="spring.com.practice.Pitcher">
<property name="shout" value="I started executing..."></property>
</bean>
是的,我正试图在Jboss 5上运行它,我正在用maven建立一个项目。
我收到了一些建议,现在我的申请背景如下:
<?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:sched="http://www.springinaction.com/schema/sched"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springinaction.com/schema/sched
http://www.springinaction.com/schema/sched-1.0.xsd"
default-lazy-init="true">
<bean id="stuffDoer" class="spring.com.practice">
<property name="shout" value="I'm executing"/>
</bean>
<sched:timer-job
target-bean="stuffDoer"
target-method="voice"
interval="5000"
start-delay="1000"
repeat-count="10" />
</beans>
这是我的web.xml:
<web-app id="simple-webapp" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>spring app</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/conf/applicationContext.xml
</param-value>
</context-param>
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>/WEB-INF/log4j.properties</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.util.Log4jConfigListener
</listener-class>
</listener>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
</web-app>
现在我得到了这个例子:
12:35:51,657 ERROR [01-SNAPSHOT]] Error configuring application listener of class org.springframework.web.context.ContextLoaderListener
java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener
我没有意识到每隔30秒执行一次像hello world这样的事情会是这么复杂的
答案 0 :(得分:28)
我不打算使用Quartz,这对于这么简单的事情来说太过分了。 Java5带有自己的调度程序,它已经足够了。
春季前3,这是最简单的方法:
<bean class="org.springframework.scheduling.concurrent.ScheduledExecutorFactoryBean">
<property name="scheduledExecutorTasks">
<list>
<bean class="org.springframework.scheduling.concurrent.ScheduledExecutorTask">
<property name="period" value="30000"/>
<property name="runnable">
<bean class="org.springframework.scheduling.support.MethodInvokingRunnable">
<property name="targetObject" ref="pitcher"/>
<property name="targetMethod" value="voice"/>
</bean>
</property>
</bean>
</list>
</property>
</bean>
使用Spring 3,它可能非常简单:
@Scheduled(fixedRate=30000)
public void voice() {
System.out.println(getShout());
}
和
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:task="http://www.springframework.org/schema/task"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd
">
<bean id="pitcher" class="spring.com.practice.Pitcher">
<property name="shout" value="I started executing..."></property>
</bean>
<task:annotation-driven/>
</beans>
答案 1 :(得分:2)
使用Spring 3,您可以快速使用@Scheduled
和@Async
!
答案 2 :(得分:1)
看起来很复杂,但这确实是最好的方法。您可以在应用程序外部配置它,并让spring / quartz执行。
当您需要调用的方法是启用事务的服务调用时,这尤其有用。
答案 3 :(得分:1)
我有类似的东西,但在mule中使用QuartzConnector类,每20秒运行一次。见例子。另一种方法是使用cron类型的时间条目,参见Quartz Cron
<endpoint name="poller" address="quartz://poller1" type="sender" connector="QuartzConnector">
<properties>
<property name="repeatInterval" value="20000"/>
<property name="payloadClassName" value="org.jdom.Document" />
<property name="startDelay" value="10000"/>
</properties>
</endpoint>
答案 4 :(得分:0)
您可以使用预定任务
<bean id="EmptyScopesRemover" class="com.atypon.pagebuilder.core.tasks.impl.EmptyScopesRemoverImpl"/>
<task:scheduled-tasks>
<task:scheduled ref="EmptyScopesRemover" method="remove" cron="0 */1 * * * *"/>
</task:scheduled-tasks>
这是一段视频https://www.youtube.com/watch?v=mt5R_KBlhTU
您可以查看玉米价值的答案 https://stackoverflow.com/a/32521238/4251431