1

更新：

我已经安装了 grails 2.0 我有两个域类ApplicationConfiguration 和 City ，
ApplicationConfiguration 存储默认字段及其值 City 将访问 ApplicationConfiguration 值

class ApplicationConfiguration {
    String myDefaultField
    String value

    static getMyDefaultCity(){
        def city_id  =  ApplicationConfiguration.findByMyDefaultField('city') .id
        def  cityName = ApplicationConfiguration.get(city_id ).value
    } 
}


Class City{
    def ApplicationConfiguration
    String city = ApplicationConfiguration.getMyDefaultCity()
}

基本上我无法从域和服务中访问 GORM 方法，例如 1) executeQuery() 2) find*()

我得到如下错误 

  ... 5 more
Caused by: org.hibernate.InstantiationException: could not instantiate test objectCity
        ... 5 more
Caused by: java.lang.reflect.InvocationTargetException
        ... 5 more
Caused by: groovy.lang.MissingMethodException: No signature of method: ApplicationConfiguration.findByMyDefaultFie
ld() is applicable for argument types: (java.lang.String) values: [city]
        at ApplicationConfiguration.getMyDefaultCity(ApplicationConfiguration.groovy:63)
        at City.<init>(City.groovy:28)

当我ApplicationConfiguration.findByMyDefaultField('city')在我的控制器中执行此操作时，它工作正常，可以在控制器中访问 GORM 方法

重现错误的测试用例是

1) Create a project using grails project wizard
2) Create two domain classes ApplicationConfiguration(String myDefaultField, String value) and City(String city) 
3) Do generate-all for  ApplicationConfiguration
4) Now add this "getMyDefaultCity()" with the definition method as shown above
5) Initialize the filed city in City domain class "String city = ApplicationConfiguration.getMyDefaultCity()"
6) Restart the application
4

1 回答 1

0

也许这个问题对你有用：Adding business logic to a domain class using a getter style method name

您是否对该方法使用了瞬态声明？

于 2012-07-23T15:50:33.367 回答