我正在尝试获取发布到groovy Controller 的JSONObject。我可以传递对象,查看JSON数据,然后从中创建域对象。当我将其保存以写入数据库时​​,它将执行Select操作。

def save = {
    def input = request.JSON
    def instance = new Customers(input)
    instance.save()
}

这是我的调试SQL输出
Hibernate:
select
    this_.customers_id as customers1_237_0_,
    this_.customers_default_address_id as customers2_237_0_,
    this_.customers_dob as customers3_237_0_,
    this_.customers_email_address as customers4_237_0_,
    this_.customers_email_address2 as customers5_237_0_,
    this_.customers_fax as customers6_237_0_,
    this_.customers_firstname as customers7_237_0_,
    this_.customers_gender as customers8_237_0_,
    this_.customers_lastname as customers9_237_0_,
    this_.customers_membertype as customers10_237_0_,
    this_.customers_memo1 as customers11_237_0_,
    this_.customers_mname as customers12_237_0_,
    this_.customers_newsletter as customers13_237_0_,
    this_.customers_password as customers14_237_0_,
    this_.customers_point_date as customers15_237_0_,
    this_.customers_telephone as customers16_237_0_,
    this_.customers_total_points as customers17_237_0_,
    this_.customers_username as customers18_237_0_
from
    customers this_
where
    this_.customers_username=?

不知道是什么原因造成的。

最佳答案

看起来您对用户名有唯一的限制。 Grails会选择检查唯一性,因为假设读取一行是轻量级的操作,并且比触发唯一约束违例和异常更可取。

一种替代方法是删除域类中的唯一约束,然后在数据库中手动添加唯一约束。

10-07 19:33
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