无法在组件中注入 bean [英] Not able inject bean in the component
问题描述
我已经使用 这个链接我有一个简单的 MyJobTwo.java 组件,它有一个使用 CronTriggerFactoryBean
调用的方法 executeInternal()
.
I have implemented Spring Quartz scheduler example using this link
I am having simple MyJobTwo.java component that has a method executeInternal()
that is being called using CronTriggerFactoryBean
.
这是我的QuartzConfiguration.java
@Configuration
@ComponentScan("com.example")
public class QuartzConfiguration {
// we need to create a bean that will excuted by MethodInvokingJobDetailFactoryBean
// in this case we have myJobOne is the simple bean
@Bean
public MethodInvokingJobDetailFactoryBean methodInvokingJobDetailFactoryBean() {
MethodInvokingJobDetailFactoryBean obj = new MethodInvokingJobDetailFactoryBean();
obj.setTargetBeanName("myJobOne");
obj.setTargetMethod("myTask");
return obj;
}
// This trigger will schedule the job after 3 seconds and repeat after every 30 seconds for 3+1 times.
@Bean
public SimpleTriggerFactoryBean simpleTriggerFactoryBean(){
SimpleTriggerFactoryBean stFactory = new SimpleTriggerFactoryBean();
stFactory.setJobDetail(methodInvokingJobDetailFactoryBean().getObject());
stFactory.setStartDelay(3000);
stFactory.setRepeatInterval(30000);
stFactory.setRepeatCount(1);
return stFactory;
}
// We use it to configure complex job such as job scheduling using cron-expression
@Bean
public JobDetailFactoryBean jobDetailFactoryBean(){
JobDetailFactoryBean factory = new JobDetailFactoryBean();
factory.setJobClass(MyJobTwo.class);
// Map<String,Object> map = new HashMap<String,Object>();
// map.put("myJobOne", myJobOne);
// map.put(MyJobTwo.myJodOne, 1);
//factory.setJobDataAsMap(map);
//factory.setGroup("mygroup");
//factory.setName("myjob");
return factory;
}
// CronTriggerFactoryBean configures JobDetailFactoryBean
// We also configure start delay, trigger name, and cron-expression to schedule the job
@Bean
public CronTriggerFactoryBean cronTriggerFactoryBean(){
CronTriggerFactoryBean stFactory = new CronTriggerFactoryBean();
stFactory.setJobDetail(jobDetailFactoryBean().getObject());
stFactory.setStartDelay(3000);
//stFactory.setName("mytrigger");
//stFactory.setGroup("mygroup");
stFactory.setCronExpression("0 0/1 * 1/1 * ? *");
return stFactory;
}
// SchedulerFactoryBean use to register the triggers
// those registered triggers will be executed
@Bean
public SchedulerFactoryBean schedulerFactoryBean() {
SchedulerFactoryBean scheduler = new SchedulerFactoryBean();
scheduler.setTriggers(cronTriggerFactoryBean().getObject());
//scheduler.setTriggers(simpleTriggerFactoryBean().getObject());
return scheduler;
}
}
这是我使用 CronTriggerFactoryBean 执行的 bean.
This is the bean that I am executing using CronTriggerFactoryBean.
MyJobTwo.java
@Component
public class MyJobTwo extends QuartzJobBean {
private SmtpMailSender smtpMailSender;
@Autowired
public MyJobTwo(MyJobOne myJobOne, SmtpMailSender smtpMailSender) {
super();
this.myJobOne = myJobOne;
this.smtpMailSender = smtpMailSender;
}
@Override
protected void executeInternal(JobExecutionContext ctx)
throws JobExecutionException {
System.out.println("this is the test");
myJobOne.myTask();
System.out.println("task is done");
}
}
每当我尝试注入其他 bean 和服务时,我都会收到这些错误.任何人都知道是什么导致了这些错误,我需要进行哪些更改?
Whenever I am trying to inject other beans and service I am getting these errors. Anyone having any idea what is causing these errors, what changes do I need to make?
org.quartz.SchedulerException: Job instantiation failed
at org.springframework.scheduling.quartz.AdaptableJobFactory.newJob(AdaptableJobFactory.java:45)
at org.quartz.core.JobRunShell.initialize(JobRunShell.java:127)
at org.quartz.core.QuartzSchedulerThread.run(QuartzSchedulerThread.java:375)
Caused by: java.lang.InstantiationException: com.example.job.MyJobTwo
at java.lang.Class.newInstance(Class.java:427)
at org.springframework.scheduling.quartz.AdaptableJobFactory.createJobInstance(AdaptableJobFactory.java:58)
at org.springframework.scheduling.quartz.AdaptableJobFactory.newJob(AdaptableJobFactory.java:41)
... 2 common frames omitted
Caused by: java.lang.NoSuchMethodException: com.example.job.MyJobTwo.<init>()
at java.lang.Class.getConstructor0(Class.java:3082)
at java.lang.Class.newInstance(Class.java:412)
... 4 common frames omitted
推荐答案
默认作业工厂实现 AdaptableJobFactory
没有自动装配功能.
要使用依赖注入,请执行以下操作:
The default job factory implementation AdaptableJobFactory
doesn't have autowiring capability.
To use dependency injection do following:
1.创建作业工厂
package com.concretepage.config;
import org.quartz.spi.TriggerFiredBundle;
import org.springframework.beans.factory.config.AutowireCapableBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.scheduling.quartz.SpringBeanJobFactory;
public class AutowiringSpringBeanJobFactory extends SpringBeanJobFactory implements ApplicationContextAware {
private transient AutowireCapableBeanFactory beanFactory;
public void setApplicationContext(final ApplicationContext context) {
beanFactory = context.getAutowireCapableBeanFactory();
}
@Override
public Object createJobInstance(final TriggerFiredBundle bundle) throws Exception {
final Object job = super.createJobInstance(bundle);
beanFactory.autowireBean(job); //the magic is done here
return job;
}
}
在 http://codrspace.com/Khovansa/spring 上找到实施-quartz-with-a-database/
2.更新 QuartzConfiguration 中的 schedulerFactoryBean 声明:
2.Update schedulerFactoryBean declaration in QuartzConfiguration:
@Bean
public SchedulerFactoryBean schedulerFactoryBean() {
SchedulerFactoryBean scheduler = new SchedulerFactoryBean();
scheduler.setTriggers(simpleTriggerFactoryBean().getObject(), cronTriggerFactoryBean().getObject());
scheduler.setJobFactory(jobFactory());
return scheduler;
}
@Bean
public JobFactory jobFactory() {
return new AutowiringSpringBeanJobFactory();
}
- 使用基于 setter 的注入代替构造函数注入
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