如何将Quartz Scheduler连接到Spring上下文中？ [英] How to wire a Quartz Scheduler into my Spring context?

问题描述

我有一个应用程序，我想在其中使用Quartz Scheduler 对象。我已经阅读了关于此的Spring文档，他们建议使用 SchedulerFactoryBean ，如下所示：

I have an application in which I want to use a Quartz Scheduler object. I've read the Spring documentation regarding this and they suggest to use a SchedulerFactoryBean like this:

<bean id="schedulerFactoryBean" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
    <property name="autoStartup">
        <value>true</value>
    </property>
    <property name="configLocation" value="classpath:quartz.properties" />
</bean>

配置如下所示：

org.quartz.scheduler.skipUpdateCheck = true
org.quartz.scheduler.instanceName = MyQuartzScheduler
org.quartz.scheduler.jobFactory.class = org.quartz.simpl.SimpleJobFactory
org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.threadCount = 5
log4j.rootLogger=INFO, stdout
log4j.logger.org.quartz=DEBUG
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n

现在如果我想将 schedulerFactoryBean 注入我的一个对象中，我会得到一个例外说明：

Now if i want to inject schedulerFactoryBean into one of my objects I get an exception stating:

无法将[org.quartz.impl.StdScheduler]类型的构造函数参数值转换为必需类型[org.springframework.scheduling.quartz.SchedulerFactoryBean]：

为什么我得到 StdScheduler 而不是 schedulerFactoryBean ？我是否错过了配置步骤？

Why do I get a StdScheduler instead of a schedulerFactoryBean? Do I miss a configuration step?

推荐答案

SchedulerFactoryBean 是 FactoryBean 所以它不能像普通的bean一样使用。当你将它注入其他bean时，Spring将注入工厂生成的 org.quartz.Scheduler 对象，它不会注入工厂本身。

A SchedulerFactoryBean is a FactoryBean so it can't be used like a normal bean. When you inject it into other beans, Spring will inject the org.quartz.Scheduler object that the factory produces, it won't inject the factory itself.

通常将工厂bean命名为它生成的对象，因为它在引用它时会更好地读取。例如：

It is common to name the factory bean after the object that it produces, as it reads better when you're referencing it. For example:

<bean id="scheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
    <property name="autoStartup">
        <value>true</value>
    </property>
    <property name="configLocation" value="classpath:quartz.properties" />
</bean>

然后你可以配置一个需要调度程序的对象像这样：

Then you can configure an object that needs a Scheduler like this:

<bean id="beanThatNeedsScheduler" class="beanThatNeedsScheduler">
    <!-- Will inject a Scheduler not a SchdulerFactoryBean -->
    <property name="scheduler" ref="scheduler" />
</bean>

或使用注释：

@Component
public class BeanThatNeedsScheduler {

    @Autowired;
    private Scheduler scheduler

    ...
}

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