Grails 没有在 propper 数据库中保存域类

Question

我有一个 grails (2.0) 应用程序，它需要从多个 MySQL 数据库中获取某些信息。看在上帝的份上，我无法将域类保存在正确的数据库中。

我的 Datasource.groovy 文件是这样的：

environments {
development {
    dataSource {
        dbCreate = "create-drop"
        url = "jdbc:mysql://localhost:3306/informacion_empleados_dev"
    }
    dataSource_signOn {
        driverClassName = "com.mysql.jdbc.Driver"
        username = "root"
        password = ""
        dbCreate = "create-drop"
        url = "jdbc:mysql://localhost:3306/sign_on"
    }
    dataSource_administradores {
        driverClassName = "com.mysql.jdbc.Driver"
        username = "root"
        password = ""
        dbCreate = "create-drop"
        url = "jdbc:mysql://localhost:3306/administradores"
    }
    dataSource_docentes {
        driverClassName = "com.mysql.jdbc.Driver"
        username = "root"
        password = ""
        dbCreate = "create-drop"
        url = "jdbc:mysql://localhost:3306/docentes"
    }
    dataSource_alumnos {
        driverClassName = "com.mysql.jdbc.Driver"
        username = "root"
        password = ""
        dbCreate = "create-drop"
        url = "jdbc:mysql://localhost:3306/alumnos"
    }
}

我的每个域类都引用它们

class Alumno {

static constraints = {      
    matricula   blank: false
    nombres     blank: false
    apellidos   blank: false
}

static mappings = {
    datasource  'alumnos'
}
}

Answer 1

在您的域类中，它应该是mapping 而不是mappings

static mapping = {
    datasource  'alumnos'
}