我正在尝试用EJB3创建一个简单的计时器,示例取自:http://www.adam-bien.com/roller/abien/entry/simplest_possible_ejb_3_16
我在eclipse中创建了一个动态web项目,并添加了以下代码。我看不到任何输出
import javax.ejb.Schedule;
import javax.ejb.Stateless;
@Stateless
public class ShowCurrentTime {
@Schedule(second="*/1", minute="*",hour="*")
public void showTime() {
System.out.println("Time : " + System.currentTimeMillis());
}
}
这在我的maven项目中也不起作用,因为我添加了以下依赖项:
<dependency>
<groupId>org.jboss.spec.javax.ejb</groupId>
<artifactId>jboss-ejb-api_3.1_spec</artifactId>
<scope>provided</scope>
</dependency>
我遗漏了什么?
编辑:更新我的代码以导入javax.annotation.PostConstruct;导入javax.ejb.Schedule;导入javax.ejb.Singleton;导入javax.ejb.Startup;
@Singleton
@Startup
public class ShowCurrentTime {
@Schedule(second="*/1", minute="*", hour="*", persistent = false)
public void showTime() {
System.out.println("Time : " + System.currentTimeMillis());
}
@PostConstruct
public void applicationStartup() {
showTime();
}
}
我在输出中看到的是初始打印00:48:15,150信息stdout时间: 1414903695150
00:48:15,167 INFO [org.wildfly.extension.undertow] (MSC service thread 1-7) JBAS017534: Registered web context: /Test-DWP
00:48:15,202 INFO [org.jboss.as.server] (DeploymentScanner-threads - 2) JBAS018565: Replaced deployment "Test-DWP.war" with deployment "Test-DWP.war"
编辑:更改为单例,清理部署目录,并重新部署应用程序。
发布于 2014-11-02 10:33:22
发布于 2017-06-29 15:59:00
2017年访问这篇文章的人。我刚刚在Wildfly 10中使用@Stateless实现了这一特性,它的工作方式与EJB行为的预期一致。
示例:
@Stateless
public class SchedulerInvoice {
@Schedule(dayOfWeek = "*", hour = "*", minute = "*/2", second = "0", persistent = false)
public void invoiceJobHourly() {
System.out.println("====================== INVOICE JOB START =======================");
System.out.println("====================== INVOICE JOB END =======================");
}
}
https://stackoverflow.com/questions/26695018
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