Question

我正在为Grails 2.2.3应用程序添加功能，我有以下两项服务：

abstract class AbstractProcessService {
    def grailsApplication

    ConfigObject getConfig() {
        return grailsApplication.config.processes
    }
}

class PhotoMoverService extends AbstractProcessService {
    void processPhotos() {
        // Method body
    }

    private ConfigObject getPhotoConfig() {
        config.photoMover
    }
}

当Quartz作业最终运行processPhotos() PhotoMoverService方法时，会发生以下错误：

core.ErrorLogger An error occured instantiating job to be executed. job= 'Photo Processes.com.company.processes.PhotoMoverJob'
org.quartz.SchedulerException: Job instantiation failed [See nested exception: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.company.processes.PhotoMoverJob': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'photoMoverService': Cannot create inner bean '(inner bean)' while setting bean property 'target'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#2': Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public java.lang.Object org.codehaus.groovy.grails.commons.AbstractGrailsClass.newInstance()] threw exception; nested exception is org.codehaus.groovy.grails.exceptions.NewInstanceCreationException: Could not create a new instance of class [com.company.processes.PhotoMoverService]!]
    at org.quartz.core.JobRunShell.initialize(JobRunShell.java:127)
    at org.quartz.core.QuartzSchedulerThread.run(QuartzSchedulerThread.java:375)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.company.processes.PhotoMoverJob': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'photoMoverService': Cannot create inner bean '(inner bean)' while setting bean property 'target'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#2': Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public java.lang.Object org.codehaus.groovy.grails.commons.AbstractGrailsClass.newInstance()] threw exception; nested exception is org.codehaus.groovy.grails.exceptions.NewInstanceCreationException: Could not create a new instance of class [com.company.processes.PhotoMoverService]!
    at grails.plugins.quartz.GrailsJobFactory.createJobInstance(GrailsJobFactory.java:48)
    at grails.plugins.quartz.QuartzMonitorJobFactory.createJobInstance(QuartzMonitorJobFactory.groovy:22)
    ... 2 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'photoMoverService': Cannot create inner bean '(inner bean)' while setting bean property 'target'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#2': Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public java.lang.Object org.codehaus.groovy.grails.commons.AbstractGrailsClass.newInstance()] threw exception; nested exception is org.codehaus.groovy.grails.exceptions.NewInstanceCreationException: Could not create a new instance of class [com.company.processes.PhotoMoverService]!
    ... 4 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#2': Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public java.lang.Object org.codehaus.groovy.grails.commons.AbstractGrailsClass.newInstance()] threw exception; nested exception is org.codehaus.groovy.grails.exceptions.NewInstanceCreationException: Could not create a new instance of class [com.company.processes.PhotoMoverService]!
    ... 4 more
Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public java.lang.Object org.codehaus.groovy.grails.commons.AbstractGrailsClass.newInstance()] threw exception; nested exception is org.codehaus.groovy.grails.exceptions.NewInstanceCreationException: Could not create a new instance of class [com.company.processes.PhotoMoverService]!
    ... 4 more
Caused by: org.codehaus.groovy.grails.exceptions.NewInstanceCreationException: Could not create a new instance of class [com.company.processes.PhotoMoverService]!
    ... 4 more
Caused by: java.lang.NullPointerException: Cannot get property 'config' on null object
    at com.company.processes.AbstractProcessService.getConfig(AbstractProcessService.groovy:23)
    at com.company.processes.PhotoMoverService.getPhotoConfig(PhotoMoverService.groovy:213)
    ... 4 more

当我调试应用程序时，grailsApplication中的AbstractProcessService为空，就像没有正确注入一样。任何人都可以告诉我 1）为什么没有注射， 2）我能做些什么来实现这一目标。谢谢！

在Grails中使用抽象服务

0 个答案: