Question

我在User Domain类中添加了以下方法

   String getNameAttribute(){
       return this.username;
    }

其中username是域类中的属性。我使用它进行审计日志记录以获取用户名来记录它。

但是当我运行应用程序时，我得到以下异常

012-03-27 23:01:17,646 [main] ERROR context.GrailsContextLoader  - Error executing bootstraps: Error creating bean with name 'messageSource': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is org.hibernate.PropertyNotFoundException: Could not find a setter for property nameAttribute in class com.gra.register.User
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'messageSource': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is org.hibernate.PropertyNotFoundException: Could not find a setter for property nameAttribute in class com.gra.register.User
    at org.grails.tomcat.TomcatServer.start(TomcatServer.groovy:212)
    at grails.web.container.EmbeddableServer$start.call(Unknown Source)
    at _GrailsRun_groovy$_run_closure5_closure12.doCall(_GrailsRun_groovy:158)
    at _GrailsRun_groovy$_run_closure5_closure12.doCall(_GrailsRun_groovy)
    at _GrailsSettings_groovy$_run_closure10.doCall(_GrailsSettings_groovy:280)
    at _GrailsSettings_groovy$_run_closure10.call(_GrailsSettings_groovy)
    at _GrailsRun_groovy$_run_closure5.doCall(_GrailsRun_groovy:149)
    at _GrailsRun_groovy$_run_closure5.call(_GrailsRun_groovy)
    at _GrailsRun_groovy.runInline(_GrailsRun_groovy:116)
    at _GrailsRun_groovy.this$4$runInline(_GrailsRun_groovy)
    at _GrailsRun_groovy$_run_closure1.doCall(_GrailsRun_groovy:59)
    at RunApp$_run_closure1.doCall(RunApp.groovy:33)
    at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:381)
    at gant.Gant$_dispatch_closure7.doCall(Gant.groovy:415)
    at gant.Gant$_dispatch_closure7.doCall(Gant.groovy)
    at gant.Gant.withBuildListeners(Gant.groovy:427)
    at gant.Gant.this$2$withBuildListeners(Gant.groovy)
    at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source)
    at gant.Gant.dispatch(Gant.groovy:415)
    at gant.Gant.this$2$dispatch(Gant.groovy)
    at gant.Gant.invokeMethod(Gant.groovy)
    at gant.Gant.executeTargets(Gant.groovy:590)
    at gant.Gant.executeTargets(Gant.groovy:589)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is org.hibernate.PropertyNotFoundException: Could not find a setter for property nameAttribute in class com.gra.register.User
    ... 23 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Invocation of init method failed; nested exception is org.hibernate.PropertyNotFoundException: Could not find a setter for property nameAttribute in class com.gra.register.User
    ... 23 more
Caused by: org.hibernate.PropertyNotFoundException: Could not find a setter for property nameAttribute in class com.gra.register.User
    ... 23 more

为什么要寻找二传手？我在这做错了什么？提前谢谢。

Answer 1

这不是2.0中的问题，而是在早期版本中。将公共字段添加到Groovy类（例如，域类中的String firstName）时，Groovy编译器会将其转换为私有字段和公共getter和setter。在Grails域类中，属性默认是持久的，但属性被定义为匹配的getter / setter对。公共字段为您创建了这个，但您可以像在Java中那样艰难地进行：

class Person {
   private String name

   String getName() { return this.name }
   void setName(String name) { this.name = name }
}

因此，当你添加一个getter（或一个setter）时，它看起来像一个getter / setter属性对的一半，因为setter不在那里，所以对GORM来说是个问题。

幸运的是，修复很简单;将getter的属性名称添加到transients列表中：

static transients = ['nameAttribute']

在域类中添加getter方法后出错

1 个答案: