grails 3.2.6 无法初始化测试数据“不是域类或 GORM 未正确初始化”

【问题标题】：grails 3.2.6 fails to initialise test data "is not a domain class or GORM has not been initialized correctly"grails 3.2.6 无法初始化测试数据“不是域类或 GORM 未正确初始化”
【发布时间】：2017-07-01 20:03:31
【问题描述】：

我用最新的 v3.2.6 创建了一个简单的 grails 应用程序。在 grails-app/domain 中创建了 Authors 和 Book 类。

grails-app/domain 中的 book 类看起来像这样（我也有一个 books 类）

package org.softwood

//Author has many books logical model

class Author {

    String name
    Collection books

    //static hasMany = [books:Book]

    static constraints = {
        books nullable:true
    }
}

并为完整性预订域类

package org.softwood

class Book {

    String title
    Author author

    //static belongsTo = [author:Author]

    static constraints = {
        author nullable:true
    }
}

我启动了应用程序 - 没有错误，并尝试使用 grails 控制台创建 Author 的实例并收到类似这样的错误

java.lang.IllegalStateException: Either class [org.softwood.Author] is not a domain class or GORM has not been initialized correctly or has already been shutdown. Ensure GORM is loaded and configured correctly before calling any methods on a GORM entity.

所以我编辑了 BootStrap.groovy 以尝试像这样在启动时创建一个。为什么它没有正确调出 Gorm？

import org.softwood.*

class BootStrap {

    def init = { servletContext ->
        environments {
            development{
                createDevData()
            }
            test {}
            production {}
        }
    }
    def destroy = {
    }

    def createDevData() {
        Author a = new Author(name:"will")
        def res = a.save (flush:true, failOnExit:true)
        assert res
        assert Author.get(1).name == "will"
    }
}

当我使用相同的消息启动应用程序时出现此错误，堆栈跟踪如下

java.lang.IllegalStateException: Either class [org.softwood.Author] is not a domain class or GORM has not been initialized correctly or has already been shutdown. Ensure GORM is loaded and configured correctly before calling any methods on a GORM entity.
    at org.grails.datastore.gorm.GormEnhancer.stateException(GormEnhancer.groovy:387)
    at org.grails.datastore.gorm.GormEnhancer.findInstanceApi(GormEnhancer.groovy:273)
    at org.grails.datastore.gorm.GormEnhancer.findInstanceApi(GormEnhancer.groovy:270)
    at org.grails.datastore.gorm.GormEntity$Trait$Helper.currentGormInstanceApi(GormEntity.groovy:1326)
    at org.grails.datastore.gorm.GormEntity$Trait$Helper.save(GormEntity.groovy:151)
    at org.grails.datastore.gorm.GormEntity$Trait$Helper$save.call(Unknown Source)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:133)
    at org.softwood.Author.save(Author.groovy)
    at org.softwood.Author.save(Author.groovy)
    at org.grails.datastore.gorm.GormEntity$save.call(Unknown Source)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
    at test.BootStrap.createDevData(BootStrap.groovy:21)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
    at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:384)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1024)
    at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:69)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:52)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:154)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:158)
    at test.BootStrap$_closure1$_closure3$_closure4.doCall(BootStrap.groovy:10)
    at test.BootStrap$_closure1$_closure3$_closure4.doCall(BootStrap.groovy)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
    at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:294)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1024)
    at groovy.lang.Closure.call(Closure.java:414)
    at groovy.lang.Closure.call(Closure.java:408)
    at grails.util.Environment$EnvironmentBlockEvaluator.execute(Environment.java:529)
    at grails.util.Environment.executeForEnvironment(Environment.java:510)
    at grails.util.Environment.executeForCurrentEnvironment(Environment.java:485)
    at org.grails.web.servlet.boostrap.DefaultGrailsBootstrapClass.callInit(DefaultGrailsBootstrapClass.java:62)
    at org.grails.web.servlet.context.GrailsConfigUtils.executeGrailsBootstraps(GrailsConfigUtils.java:65)
    at org.grails.plugins.web.servlet.context.BootStrapClassRunner.onStartup(BootStrapClassRunner.groovy:53)
    at grails.boot.config.GrailsApplicationPostProcessor.onApplicationEvent(GrailsApplicationPostProcessor.groovy:256)
    at grails.boot.config.GrailsApplicationPostProcessor.onApplicationEvent(GrailsApplicationPostProcessor.groovy)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:167)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
    at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:383)
    at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:337)
    at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:882)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.finishRefresh(EmbeddedWebApplicationContext.java:144)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:545)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:762)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:372)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
    at grails.boot.GrailsApp.run(GrailsApp.groovy:83)
    at grails.boot.GrailsApp.run(GrailsApp.groovy:388)
    at grails.boot.GrailsApp.run(GrailsApp.groovy:375)
    at grails.boot.GrailsApp$run.call(Unknown Source)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:133)
    at test.Application.main(Application.groovy:8)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)

【问题讨论】：

  • 奇怪的小精灵。在等待时 - 因损坏而报废并再次重新创建一个全新的应用程序。重新创建了作者/书籍部分并作为集成测试重新运行 - 它有效，进入控制台并在交互式控制台上输入 - 它有效。所以我不知道为什么以前的全新安装不起作用 - 但显然坏了。很奇怪
  • 您的域类是否与您的Application 类在同一个包中？如果不是，您可能需要覆盖packageNames()
  • 不，它们不是——默认的应用程序 groovy 在包“package coffeeshopapp”中——与项目相同。域类在“package org.softwood”中。正如我提到的那样，在 intellij 中进行 gradle clean 似乎又可以修复了 - 从命令行运行应用程序也是如此。你是什​​么意思覆盖“packageNames()”不知道你的意思是什么

标签： grails grails-orm


【解决方案1】：

试试这个

package org.softwood

//Author has many books logical model

class Author {

    String name
    //Collection books

    static hasMany = [books:Book]

    static constraints = {
        books nullable:true    // you may not need this.
    }
}

【讨论】：

  • 看起来不像是 grails - 当我在命令行上使用 run-app 时它工作正常，当我在 intellij 中尝试 gradle clean 时它又开始工作了。似乎是 intellij 失步和生成停止正常工作的问题。运行干净的动作会保持在它之上 - 但我认为不应该真的发生
猜你喜欢
  • 2018-08-03
  • 1970-01-01
  • 1970-01-01
  • 2022-08-11
  • 1970-01-01
  • 2013-04-03
  • 2015-04-06
  • 1970-01-01
  • 1970-01-01
相关资源
最近更新 更多
热门标签
Java Python linux javascript Mysql C# Docker 算法 前端 SpringBoot Redis Vue spring 设计模式 .net core .net kubernetes c++ 数据库 数据结构 大数据 js 机器学习 微服务 Android Go 程序员 面试 JVM ASP.net core 云原生 人工智能 后端 PHP git CSS golang k8s Nginx Django mybatis 深度学习 多线程 React 架构 devops 爬虫 云计算 Spring Boot LeetCode