Question

我正在使用spring-security并添加了一个额外的域 - “UserSettings”，我不想在创建用户时创建它。

为了遵循所有原则，我决定在这里建立一对一的关系。

用户域：

package com.trading.security

import groovy.transform.EqualsAndHashCode
import groovy.transform.ToString
import com.trading.portal.UserSettings

@EqualsAndHashCode(includes='username')
@ToString(includes='username', includeNames=true, includePackage=false)
class User implements Serializable {

    private static final long serialVersionUID = 1

    transient springSecurityService

    String username
    String password
    boolean enabled = true
    boolean accountExpired
    boolean accountLocked
    boolean passwordExpired

    Set<Role> getAuthorities() {
        UserRole.findAllByUser(this)*.role
    }

    def beforeInsert() {
        encodePassword()
                us = new UserSettings(user:this,currency:'SEK', volumeUnit: 'AM3').save(failOnError:true)           
    }

        def afterInsert() {
        }

    def beforeUpdate() {
        if (isDirty('password')) {
            encodePassword()
        }
    }

        UserSettings getUserSettings() {
            us
        }

    protected void encodePassword() {
        password = springSecurityService?.passwordEncoder ? springSecurityService.encodePassword(password) : password
    }

    static transients = ['springSecurityService']

    static constraints = {
        password blank: false, password: true
        username blank: false, unique: true
                us unique:true, nullable:true
    }

    static mapping = {
        password column: '`password`'
                table '`user`'
    }

        static hasOne = [us:UserSettings]
}

和UserSettings域：

 package com.trading.portal
import com.trading.security.User

class UserSettings {
    int id
    int SupplierId
    String supplierName
    String currency
    String volumeUnit

    static belongsTo = [user : User]
    static mapping = {
      id column: 'id', type: 'integer'  
    }

    static constraints = {
        user()
        supplierName()
        currency(inList: ['SEK', 'EUR', 'USD', 'GBP'])
        volumeUnit(inList: ['AM3', 'PKG', 'AM1', 'AM2'])

        supplierId      nullable:true
        currency        nullable:true
        volumeUnit      nullable:true
        supplierName    nullable:true

    }
}

所以我尝试在插入过程之前在用户域中创建用户设置但是失败并显示消息：

org.springframework.dao.InvalidDataAccessApiUsageException: 
Not-null property references a transient value - transient instance must be saved before current operation :
 com.trading.portal.UserSettings.user -> com.trading.security.User;
 nested exception is org.hibernate.TransientPropertyValueException: 
 Not-null property references a transient value - transient instance must be saved before current operation :
 com.trading.portal.UserSettings.user -> com.trading.security.User

我做错了什么？我该怎么做才能解决这个问题？

Answer 1

UserSettings属于User，因此您必须首先保存用户，并在保存用户之前调用User对象beforeInsert。

Grails以一对一的关系创建客户端

1 个答案: