Grails Spring Security 查询没有特定角色的用户
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【中文标题】Grails Spring Security 查询没有特定角色的用户【英文标题】:Grails Spring Security querying users which don't have a certain role 【发布时间】:2015-11-01 10:28:42 【问题描述】:使用Grails spring security REST(它本身使用Grails Spring Security Core)我生成了User
、Role
、UserRole
类。
用户:
class User extends DomainBase
transient springSecurityService
String username
String password
String firstName
String lastNameOrTitle
String email
boolean showEmail
String phoneNumber
boolean enabled = true
boolean accountExpired
boolean accountLocked
boolean passwordExpired
static transients = ['springSecurityService']
static hasMany = [
roles: Role,
ratings: Rating,
favorites: Favorite
]
static constraints =
username blank: false, unique: true
password blank: false
firstName nullable: true, blank: false
lastNameOrTitle nullable: false, blank: false
email nullable: false, blank: false
phoneNumber nullable: true
static mapping =
DomainUtil.inheritDomainMappingFrom(DomainBase, delegate)
id column: 'user_id', generator: 'sequence', params: [sequence: 'user_seq']
username column: 'username'
password column: 'password'
enabled column: 'enabled'
accountExpired column: 'account_expired'
accountLocked column: 'account_locked'
passwordExpired column: 'password_expired'
roles joinTable: [
name: 'user_role',
column: 'role_id',
key: 'user_id']
Set<Role> getAuthorities()
// UserRole.findAllByUser(this).collect it.role
// userRoles.collect it.role
this.roles
def beforeInsert()
encodePassword()
def beforeUpdate()
super.beforeUpdate()
if (isDirty('password'))
encodePassword()
protected void encodePassword()
password = springSecurityService?.passwordEncoder ? springSecurityService.encodePassword(password) : password
角色:
class Role
String authority
static mapping =
cache true
id column: 'role_id', generator: 'sequence', params: [sequence: 'role_seq']
authority column: 'authority'
static constraints =
authority blank: false, unique: true
用户角色:
class UserRole implements Serializable
private static final long serialVersionUID = 1
static belongsTo = [
user: User,
role: Role
]
// User user
// Role role
boolean equals(other)
if (!(other instanceof UserRole))
return false
other.user?.id == user?.id &&
other.role?.id == role?.id
int hashCode()
def builder = new HashCodeBuilder()
if (user) builder.append(user.id)
if (role) builder.append(role.id)
builder.toHashCode()
static UserRole get(long userId, long roleId)
UserRole.where
user == User.load(userId) &&
role == Role.load(roleId)
.get()
static boolean exists(long userId, long roleId)
UserRole.where
user == User.load(userId) &&
role == Role.load(roleId)
.count() > 0
static UserRole create(User user, Role role, boolean flush = false)
def instance = new UserRole(user: user, role: role)
instance.save(flush: flush, insert: true)
instance
static boolean remove(User u, Role r, boolean flush = false)
if (u == null || r == null) return false
int rowCount = UserRole.where
user == User.load(u.id) &&
role == Role.load(r.id)
.deleteAll()
if (flush)
UserRole.withSession it.flush()
rowCount > 0
static void removeAll(User u, boolean flush = false)
if (u == null) return
UserRole.where
user == User.load(u.id)
.deleteAll()
if (flush)
UserRole.withSession it.flush()
static void removeAll(Role r, boolean flush = false)
if (r == null) return
UserRole.where
role == Role.load(r.id)
.deleteAll()
if (flush)
UserRole.withSession it.flush()
static constraints =
role validator: Role r, UserRole ur ->
if (ur.user == null) return
boolean existing = false
UserRole.withNewSession
existing = UserRole.exists(ur.user.id, r.id)
if (existing)
return 'userRole.exists'
static mapping =
id composite: ['role', 'user']
version false
现在我希望创建一个管理员区域,管理员可以在其中修改/启用用户帐户,但不能接触其他管理员,因此我决定创建一个可分页查询,它只选择不这样做的用户拥有ROLE_ADMIN
角色,因为管理员同时拥有ROLE_USER
和ROLE_ADMIN
角色。
从上面的代码可以看出,我稍微修改了默认生成的代码,并在User
类中添加了joinTable
,而不是hasMany: [roles:UserRole]
,或者保持默认而不引用角色.进行此更改的原因是因为在查询 UserRole 时,我偶尔会遇到重复,这会使分页变得困难。
因此,通过当前的设置,我设法创建了两个查询,允许我仅获取没有管理员角色的用户。
def rolesToIgnore = ["ROLE_ADMIN"]
def userIdsWithGivenRoles = User.createCriteria().list()
projections
property "id"
roles
'in' "authority", rolesToIgnore
def usersWithoutGivenRoles = User.createCriteria().list(max: 10, offset: 0)
not
'in' "id", userIdsWithGivenRoles
第一个查询获取所有具有ROLE_ADMIN
角色的用户 id 的列表,然后第二个查询获取所有 id 不在前一个列表中的用户。
这可行并且是可分页的,但是它困扰我有两个原因:
-
用户上的
joinTable
对我来说似乎“恶心”。为什么要使用joinTable
当我已经有一个特定的类用于该目的UserRole
,但是该类更难查询,我担心为每个找到的Role
映射Role
可能的开销@ 987654341@ 即使我只需要User
。
两个查询,只能分页第二个。
所以我的问题是: 是否有更优化的方法来构造查询以获取不包含某些角色的用户(无需将数据库重组为每个用户只有一个角色的金字塔角色系统)?
两个查询是绝对必要的吗?我试图构建一个纯 SQL 查询,但如果没有子查询,我就无法做到。
【问题讨论】:
【参考方案1】:你可以这样做:
return UserRole.createCriteria().list
distinct('user')
user
ne("enabled", false)
or
user
eq('id', springSecurityService.currentUser.id)
role
not
'in'('authority', ['ADMIN', 'EXECUTIVE'])
使用distinct('user')
,您只会得到Users
【讨论】:
【参考方案2】:如果你的 UserRole 有 user 和角色 properties 而不是 belongsTo,像这样:
class UserRole implements Serializable
private static final long serialVersionUID = 1
User user
Role role
...
那么你可以这样做:
def rolesToIgnore = ["ROLE_ADMIN"]
def userIdsWithGivenRoles = UserRole.where
role.authority in rolesToIgnore
.list().collect it.user.id .unique()
def userIdsWithoutGivenRoles = UserRole.where
!(role.authority in rolesToIgnore)
.list().collect it.user.id .unique()
我不擅长预测,所以我使用 unique() 删除重复项。
SQL 等价物是:
SELECT DISTINCT ur.user_id
FROM user_role AS ur INNER JOIN role AS r
ON ur.authority_id = r.id
WHERE r.authority IN ('ROLE_ADMIN');
SELECT DISTINCT ur.user_id
FROM user_role AS ur INNER JOIN role AS r
ON ur.authority_id = r.id
WHERE r.authority NOT IN ('ROLE_ADMIN');
【讨论】:
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