Question

如何解决groovy.lang.MissingMethodException：没有方法签名：methodMissing（）适用于参数类型:(）values：[]？

在我的项目中，我有两个插件，我在其中一个插件启动时遇到此异常（此插件的所有功能都很好）

我已经在这一行中获得了例外＆＃39; findAllByStatus＆＃39;

def newItemList = Item.findAllByStatus(ItemStatus.NEW)

我已在当前服务类中导入Item.groovy，并且在启动石英时启动时也会创建服务类。我不确定它是否与石英有关。

项目是域类。

class Item implements Serializable {    

    ItemStatus status
    Date dateCreated
    Date lastUpdated

    def updateLastUpdated(){
        lastUpdated = new Date()
    }
    static hasMany = [itemProperties : ItemProperty]
    static mapping = {
        table 'xcomms_item'
        datasource 'xcomms'
    }
    static constraints = {
        batch nullable:true
    }

    @Override
    public int hashCode() {
        return 13 * id.hashCode();
    }
    @Override
    public boolean equals(Object obj) {
        if ((obj != null) && (obj instanceof Item) && (((Item)obj).id.equals(this.id))) {
            return true;
        }
        return false;
    }

}

堆栈跟踪：

groovy.lang.MissingMethodException: No signature of method: xcomms.Item.methodMissing() is applicable for argument types: () values: []
at xcomms.CommunicationBatchProcessService.communicationProcesss(CommunicationBatchProcessService.groovy:53)
at xcomms.AutomatedCommunicationJob.execute(AutomatedCommunicationJob.groovy:16)
at grails.plugin.quartz2.GrailsArtefactJob.execute(GrailsArtefactJob.java:59)
at org.quartz.core.JobRunShell.run(JobRunShell.java:213)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:557)
2013-11-14 14:20:00,112 [QuartzJobCluster_Worker-2] ERROR quartz2.JobErrorLoggerListener  - Exception thrown in job:xcomms.AutomatedCommunicationJob
org.quartz.JobExecutionException: xcomms.communication.exception.CommunicationProcessException: Error in processing communication batch [See nested exception: xcomms.communication.exception.CommunicationProcessException: Error in processing communication batch]
at grails.plugin.quartz2.GrailsArtefactJob.execute(GrailsArtefactJob.java:66)
at org.quartz.core.JobRunShell.run(JobRunShell.java:213)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:557)
Caused by: xcomms.communication.exception.CommunicationProcessException: Error in processing communication batch
at xcomms.AutomatedCommunicationJob.execute(AutomatedCommunicationJob.groovy:19)
at grails.plugin.quartz2.GrailsArtefactJob.execute(GrailsArtefactJob.java:59)
... 2 more
Caused by: groovy.lang.MissingMethodException: No signature of method: xcomms.Item.methodMissing() is applicable for argument types: () values: []
at xcomms.CommunicationBatchProcessService.communicationProcesss(CommunicationBatchProcessService.groovy:53)
at xcomms.AutomatedCommunicationJob.execute(AutomatedCommunicationJob.groovy:16)
... 3 more

ItemStatus是：

public enum  ItemStatus {

NEW(0,"New"),BATCHED(1,"Batched"),SENT(2,"Sent")

final int id
final String name

private ItemStatus(int id, String name) { this.id = id; this.name = name;}
static ItemStatus getById(int i){
    for( entry in ItemStatus.values() ){
        if(entry.id == i)
            return entry
    }
}
}

Answer 1

我为解决这个问题所做的是推迟Quartz Scheduler的开始。正如Ima所说，有一种竞争条件使GORM在Grails应用程序完全启动之前无法使用。如果您之前尝试使用它，则会得到MissingMethodException。

我的解决方案涉及在完成所有初始化后禁用Quartz Scheduler autoStartup（请参阅https://github.com/9ci/grails-quartz2/blob/07ecde5baa59e20f99c05302c61137617c08fc81/src/groovy/grails/plugin/quartz2/QuartzFactoryBean.groovy#L61）和start() {/ 1}}。

这是阻止autoStartup的配置：

Bootstrap.groovy

使用这种方式，你不必像Ima建议的那样放弃使用GORM。

Answer 2

最后，我找到了解决方案。在启动时，quartz会加载服务类，但此时无法执行GORM命令。然后我将其更改为本机sql select * from xcomms_item where status = 0。现在它工作正常。

如何解决groovy.lang.MissingMethodException？

2 个答案: