Grails域錯誤

Question

這是我第一次使用Grails，我定義了以下Domain類

   package ing2015

class Product {
    String name, description, location
    Category category
    Subcategory subcategory
    static belongsTo = [Category, Subcategory]
    Date date
    static constraints = {
        name(blank:false)
        date (blank:false)
        description(blank:false)
        location(blank:false)

    }
}

package ing2015

class Category {
    String name
    static hasmany=[product: Product, subcategory: Subcategory]
    static constraints = {
        name(blank:false)
    }
}
package ing2015

class Subcategory {
    String name
    Category category
    static belongsTo = Category
    static HasMany = [product : Product]
    static constraints = {
    }
}

但是當我嘗試運行應用程序或為這些域生成任何控制器時，它顯示了此錯誤

| Error Error loading plugin manager: No property found for name [product] for class [class ing2015.Subcategory] (Use --stacktrace to see the full trace)
Error |

我找不到問題，在此之前，控制台向我顯示了無法創建表“ product”和“ category”的內容

編輯

我只是解決了將“ HasMany”更改為“ hasMany”的問題。 但是現在我不知道為什么控制台會向我顯示

objc[1024]: Class JavaLaunchHelper is implemented in both /Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/bin/java and /Library/Java/JavaVirtualMachines/jdk1.7.0_80.jdk/Contents/Home/jre/lib/libinstrument.dylib. One of the two will be used. Which one is undefined.
| Error 2015-10-11 01:47:41,066 [localhost-startStop-1] ERROR hbm2ddl.SchemaExport  - HHH000389: Unsuccessful: alter table image drop constraint FK_mm4cmvteo84wq24upfvucdy08 if exists
| Error 2015-10-11 01:47:41,069 [localhost-startStop-1] ERROR hbm2ddl.SchemaExport  - Tabla "IMAGE" no encontrada
Table "IMAGE" not found; SQL statement:
alter table image drop constraint FK_mm4cmvteo84wq24upfvucdy08 if exists [42102-176]
| Error 2015-10-11 01:47:41,069 [localhost-startStop-1] ERROR hbm2ddl.SchemaExport  - HHH000389: Unsuccessful: alter table product drop constraint FK_rlaghtegr0yx2c1q1s6nkqjlh if exists
| Error 2015-10-11 01:47:41,070 [localhost-startStop-1] ERROR hbm2ddl.SchemaExport  - Tabla "PRODUCT" no encontrada
Table "PRODUCT" not found; SQL statement:
alter table product drop constraint FK_rlaghtegr0yx2c1q1s6nkqjlh if exists [42102-176]
| Error 2015-10-11 01:47:41,070 [localhost-startStop-1] ERROR hbm2ddl.SchemaExport  - HHH000389: Unsuccessful: alter table product drop constraint FK_lmq2wxehhih47uva0peyk8v8g if exists
| Error 2015-10-11 01:47:41,071 [localhost-startStop-1] ERROR hbm2ddl.SchemaExport  - Tabla "PRODUCT" no encontrada
Table "PRODUCT" not found; SQL statement:
alter table product drop constraint FK_lmq2wxehhih47uva0peyk8v8g if exists [42102-176]
| Error 2015-10-11 01:47:41,071 [localhost-startStop-1] ERROR hbm2ddl.SchemaExport  - HHH000389: Unsuccessful: alter table subcategory drop constraint FK_dglte9qeu8l5fhggto4loyegg if exists
| Error 2015-10-11 01:47:41,071 [localhost-startStop-1] ERROR hbm2ddl.SchemaExport  - Tabla "SUBCATEGORY" no encontrada
Table "SUBCATEGORY" not found; SQL statement:
alter table subcategory drop constraint FK_dglte9qeu8l5fhggto4loyegg if exists [42102-176

Answer 1

我不確定

 static HasMany

可以通過grails *（ hasMany必須是）正確讀取，順便說一下，這是對我有用的代碼：

class Category {
    String name
    static hasMany= [product: Product, subcategories: Subcategory]
    static constraints = {
        name(blank:false)
    }
}


class Subcategory {
    String name
    Category category
    static belongsTo = [category : Category]
    static hasMany = [product : Product]
    static constraints = {
    }
}