Grails and uuid.hex generator

Grails and uuid.hex generator

class Country {
    String id
    String name
    Boolean active = true

    static mapping = {
         id generator:'uuid.hex', params:[separator:'-']
    }
}

params:[separator:'-']为主键中间使用"-"分隔, 比如生成格式为: 2c9d004d-1b247311-011b-2473734f-0001
当然可以去掉 params:[separator:'-']直接写成

class Country {
    String id
    String name
    Boolean active = true

    static mapping = {
         id generator:'uuid.hex'
    }
}
这样就生成格式为: 2c9d004d1b247311011b2473ebf90003