我试图在运行时通过在Spring boot中使用@Configuration和@Bean注释来创建bean。使用这种方法的原因是我将从数据库中获取任务列表scheduler为每个任务创建一个作业。但由于某些原因，我在
时遇到异常例外：
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'cronTriggerFactoryBean' defined in class path resource [com/hello/QuartzConfiguration.class]: Unsatisfied dependency expressed through constructor argument with index 0 of type [java.lang.String]: No qualifying bean of type [java.lang.String] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [java.lang.String] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:749) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:464) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1123) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1018) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:753) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) ~[spring-context-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) ~[spring-context-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) ~[spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:766) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.SpringApplication.createAndRefreshContext(SpringApplication.java:361) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1191) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1180) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at com.hello.MainClass.main(MainClass.java:14) [classes/:na]
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [java.lang.String] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:813) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:741) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]
... 19 common frames omitted
代码
@Configuration
@ComponentScan("com.hello")
public class QuartzConfiguration {
@Autowired
private ApplicationContext applicationContext;
@Bean
public SpringBeanJobFactory springBeanJobFactory() {
AutowiringSpringBeanJobFactory jobFactory = new AutowiringSpringBeanJobFactory();
jobFactory.setApplicationContext(applicationContext);
return jobFactory;
}
@Bean
public JobDetailFactoryBean jobDetailFactoryBean(){
JobDetailFactoryBean factory = new JobDetailFactoryBean();
factory.setJobClass(SampleJob.class);
Map<String,Object> map = new HashMap<String,Object>();
map.put("name", "RAM");
map.put(MyJobTwo.COUNT, 1);
factory.setJobDataAsMap(map);
factory.setGroup("mygroup");
factory.setName("myjob");
return factory;
}
@Bean
public CronTriggerFactoryBean cronTriggerFactoryBean(String triggerName, String myGroup){
CronTriggerFactoryBean stFactory = new CronTriggerFactoryBean();
stFactory.setJobDetail(jobDetailFactoryBean().getObject());
stFactory.setStartDelay(3000);
stFactory.setName(triggerName);
stFactory.setGroup(myGroup);
stFactory.setCronExpression("0/10 * * * * ?"); //0/10 * * * * ?
return stFactory;
}
@Bean
public SchedulerFactoryBean schedulerFactoryBean() {
SchedulerFactoryBean scheduler = new SchedulerFactoryBean();
scheduler.setJobFactory(springBeanJobFactory());
scheduler.setTriggers(cronTriggerFactoryBean("triggerName","MyGroup").getObject());
return scheduler;
}
}
有什么想法吗？
答案 0 :(得分：0)
问题是你不能这样做：
@Bean
public CronTriggerFactoryBean cronTriggerFactoryBean(String triggerName, String myGroup){
CronTriggerFactoryBean stFactory = new CronTriggerFactoryBean();
stFactory.setJobDetail(jobDetailFactoryBean().getObject());
stFactory.setStartDelay(3000);
stFactory.setName(triggerName);
stFactory.setGroup(myGroup);
stFactory.setCronExpression("0/10 * * * * ?"); //0/10 * * * * ?
return stFactory;
}
如果你这样做，spring会尝试从应用程序上下文中自动装配triggerName和myGroup，所以你只需删除@Bean注释，一切都应该没问题。
<强>更新
试试这个：
@Bean
public CronTriggerFactoryBean cronTriggerFactoryBean(){
CronTriggerFactoryBean stFactory = new CronTriggerFactoryBean();
stFactory.setJobDetail(jobDetailFactoryBean().getObject());
stFactory.setStartDelay(3000);
stFactory.setName("triggerName");
stFactory.setGroup("myGroup");
stFactory.setCronExpression("0/10 * * * * ?"); //0/10 * * * * ?
return stFactory;
}
@Bean
public SchedulerFactoryBean schedulerFactoryBean() {
SchedulerFactoryBean scheduler = new SchedulerFactoryBean();
scheduler.setJobFactory(springBeanJobFactory());
scheduler.setTriggers(cronTriggerFactoryBean().getObject());
return scheduler;
}