java 设置/配置 EJB 计时器服务的数据源
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Set/configure the EJB Timer Service’s DataSource
提问by ejohansson
I'm trying to use the Timer Service in EJB 3.1 in my app.
我正在尝试在我的应用程序中使用 EJB 3.1 中的计时器服务。
@Stateless
@LocalBean
public class StatelessTimerSessionBean {
@Schedule(minute = "*", second = "0", dayOfMonth = "*", month = "*", year = "*", hour = "9-17", dayOfWeek = "Mon-Fri")
public void myTimer() {
System.out.println("Timer event: " + new Date());
}
}
".. set the EJB Timer Service's Timer DataSource setting to a valid JDBC resource.."
“.. 将 EJB 计时器服务的计时器数据源设置设置为有效的 JDBC 资源..”
from EJB Timer Service
I cannot figure out how to configure the Timer Datasource correctly?
我不知道如何正确配置计时器数据源？
The error I get when deploying is:
我在部署时遇到的错误是：
SEVERE: Exception while invoking class org.glassfish.ejb.startup.EjbApplication start method
java.lang.RuntimeException: EJB Timer Service is not available
Running: glassfish-3.1.2.2
运行： glassfish-3.1.2.2
回答by ejohansson
1. Example Database Setup
1. 示例数据库设置
I use MySQL for my database.
Create the table
EJB__TIMER__TBLfrom{GF_HOME}/glassfish/lib/install/databases/ejbtimer_{DB_ENGINE}.sql
我的数据库使用 MySQL。
EJB__TIMER__TBL从创建表{GF_HOME}/glassfish/lib/install/databases/ejbtimer_{DB_ENGINE}.sql
DB_ENGINE = e.g MySQL:
DB_ENGINE = 例如 MySQL：
CREATE TABLE EJB__TIMER__TBL (
`CREATIONTIMERAW` BIGINT NOT NULL,
`BLOB` BLOB,
`TIMERID` VARCHAR(255) NOT NULL,
`CONTAINERID` BIGINT NOT NULL,
`OWNERID` VARCHAR(255) NULL,
`STATE` INTEGER NOT NULL,
`PKHASHCODE` INTEGER NOT NULL,
`INTERVALDURATION` BIGINT NOT NULL,
`INITIALEXPIRATIONRAW` BIGINT NOT NULL,
`LASTEXPIRATIONRAW` BIGINT NOT NULL,
`SCHEDULE` VARCHAR(255) NULL,
`APPLICATIONID` BIGINT NOT NULL,
CONSTRAINT `PK_EJB__TIMER__TBL` PRIMARY KEY (`TIMERID`)
);
2. Server Configuration
2. 服务器配置
- Start your GlassFish server admin console: usually
http://localhost:4848 - On your left navigate to [Configurations] > [server-config] > [EJB Container]
- Then click the TABup top [EJB Timer Service]
- Then fill out Timer Datasource: with your JDBC Resource eg. [mysql-pu]. ( Note:Defaults to
jdbc/__TimerPool) - Restartthe Server
- 启动您的 GlassFish 服务器管理控制台：通常
http://localhost:4848 - 在您的左侧导航到[Configurations] > [server-config] > [EJB Container]
- 然后单击顶部的TAB [EJB Timer Service]
- 然后填写Timer Datasource: 使用您的 JDBC 资源，例如。[mysql-pu]。（ 注意：默认为
jdbc/__TimerPool） - 重启服务器
3. The Result
3. 结果
...
INFO: [TimerBeanContainer] Created TimerBeanContainer: TimerBean
INFO: EJB5181:Portable JNDI names for EJB TimerBean: [java:global/ejb-timer-service-app/TimerBean, java:global/ejb-timer-service-app/TimerBean!com.sun.ejb.containers.TimerLocal]
INFO: WEB0671: Loading application [ejb-timer-service-app] at [/ejb-timer-service-app]
INFO: EJB5109:EJB Timer Service started successfully for data source [mysql-pu]
INFO: Setting DBReadBeforeTimeout to false
INFO: ==> Restoring Timers ...
INFO: There are no EJB Timers owned by this server
INFO: <== ... Timers Restored.
...
4. Still Broken? TimerService just stopped working (it used to work)?
4. 仍然破碎？TimerService 刚刚停止工作（它曾经工作过）？
So this happened to me after a day full of "deploy on save". The TimerService was unavailable all of a sudden.
因此，在充满“保存部署”的一天之后，这发生在我身上。TimerService 突然不可用。
Severe: Exception while loading the app
Severe: Undeployment failed for context /ejb-timer-service-app
Warning: Cannot deploy or load EJBTimerService: org.glassfish.deployment.common.DeploymentException: Error in linking security policy for ejb-timer-service-app -- Inconsistent Module State
5. Useful Links
5. 有用的链接
回答by Jose Tepedino
In JBoss/WildFly, you can follow these instructions:
在 JBoss/WildFly 中，您可以按照以下说明进行操作：
Mastertheboss.com: Creating clustered EJB 3 Timers
Published: 08 March 2015
Mastertheboss.com：创建集群 EJB 3 计时器
发布时间：2015 年 3 月 8 日
回答by favrycio
That sounds like the glassfish-3.1.2.2 does not support EJB3, try to use jboss 7.
这听起来像glassfish-3.1.2.2不支持EJB3，尝试使用jboss 7。
http://docs.oracle.com/cd/E26576_01/doc.312/e24939/release-notes.htm
http://docs.oracle.com/cd/E26576_01/doc.312/e24939/release-notes.htm
