Grails 方法的签名不适用于参数类型:()值:[]可能的解决方案:(java.lang.Object),(java.lang.Object)

Grails 方法的签名不适用于参数类型:()值:[]可能的解决方案:(java.lang.Object),(java.lang.Object),grails,groovy,Grails,Groovy,我有一个脚本User.groovy和UserController.groovy。当我运行它时,我会 Caught: No signature of method: com.vasco.gs.User.addToUserRoles() is applicable for argument types: (com.vasco.gs.Role) values: [nurse] Possible solutions: addToUserRoles(java.lang.Object), addToUser

我有一个脚本
User.groovy
UserController.groovy
。当我运行它时,我会

Caught: No signature of method: com.vasco.gs.User.addToUserRoles() is applicable for argument types: (com.vasco.gs.Role) values: [nurse] Possible solutions: addToUserRoles(java.lang.Object), addToUserRoles(java.lang.Object), getUserRoles()
我的域类

package com.vasco.gs

import com.vasco.gs.audit.UserAudit

class User {

static constraints = {
    userName blank: false,size:2..25, unique: true
    firstName blank:false, size:2..60,matches:"[a-zA-Z1-9_]+"
    lastName blank:false, size:2..60,matches:"[a-zA-Z1-9_]+"
    middleName nullable:false, blank:false, size:2..60,matches:"[a-zA-Z1-9_]+"
    gender blank : true, nullable:true
    emailId blank : false
    mobileNumber blank : true, nullable:true
    password nullable: false,blank: false,size:2..256,password:true
    confirmPassword nullable: true, blank: false, size:2..256
    activeStatus inList:['Y', 'N']
}

String userName
String password
String confirmPassword
String firstName
String lastName
String middleName
String emailId
String mobileNumber
Gender gender
String activeStatus = 'Y'

static hasMany = [userRoles:UserRole, userLocations: UserLocation]

static transients = [
    'confirmPassword',
    'activeUsers'
]

static List getActiveUsers(){
    return User.findAllByActiveStatus('Y')
}

def beforeInsert() {
    password = password.encodeAsSHA()
}

def activate(){
    this.activeStatus = 'Y'
}

def inactivate(){
    this.activeStatus = 'N'
}

def roles() {
    return userRoles.collect { it.role }
}

def locations() {
    return userLocations.collect { it.location }
}

List addToUserRoles(role){
    UserRole.link this, role
    return roles()
}

List removeFromUserRoles(role){
    UserRole.unLink this, role
    return roles()
}

List addToUserLocations(location){
    UserLocation.link this, location
    return locations()
}

List removeFromUserLocations(location){
    UserLocation.unLink this, location
    return locations()
}

String toString() {
    "$firstName"
}

}
我的控制器

class UserController {

static allowedMethods = [save: "POST", update: "POST", delete: "POST"]

def UserService

def index() {
    redirect(action: "list", params: params)
}

def list(Integer max) {
    params.max = Math.max(max ?: User.count(), 1)
    [userInstanceList: User.list(params), userInstanceTotal: User.count()]
}

def create() {
    [roleList: Role.list(),locationList: Location.list(),userInstance: new User(params)]
}

def save() {
    def userInstance = new User(params)
    def userRole = params.userRoles
    userRole.each {
        def userrole = Role.get(it)
        println userrole
        def userRoles = userInstance.addToUserRoles(userrole)
        }

    if(UserService.validatePassword(userInstance,params.confirmPassword)){
        if (!userInstance.save(flush: true)) {
            render(view: "create", model: [userInstance: userInstance, userRoles:userRoles])
            return
        }

        flash.message = message(code: 'default.created.message', args: [
            message(code: 'user.label', default: 'User'),
            userInstance.id
        ])
        redirect(action: "list")

    }
    else
        render(view: "create", model: [userInstance: userInstance])
}
我补充说

def userRole = params.userRoles
userRole.each {
    def userrole = Role.get(it)
    println userrole
    def userRoles = userInstance.addToUserRoles(userrole)
}

我的用户控制器中的这段代码…

我怀疑您的显式
addToUserRoles
方法采用
对象
参数,而隐式方法采用GORM为支持
hasMany
声明而添加的
UserRole
参数,两者之间存在某种冲突。例如,尝试为显式方法使用不同的名称,以避免干扰GORM

List addRole(role){
    UserRole.link this, role
    return roles()
}

List removeRole(role){
    UserRole.unLink this, role
    return roles()
}

List addLocation(location){
    UserLocation.link this, location
    return locations()
}

List removeLocation(location){
    UserLocation.unLink this, location
    return locations()
}

我也有类似的问题。确保对象两侧的关系都正确编码,并将其修复。这里有一个指向GORM文档的链接,描述了1:m、m:m和1:1编码设置


可能您的域与您的数据库不同,请尝试更改Datasource.groovy以再次创建drop以重新创建表。

您为什么要编写自己的
列表addToUserRoles(角色)
?如果不按预期的方式使用spring安全插件,您试图实现什么?而不是列表addToUserRoles(角色)(duck键入)请尝试将List addToUserRoles(角色)(显式键入)作为签名,以避免与重载混淆。很难判断出哪里出了问题,但这可能会帮助你…对不起,伊恩,你能给我解释一下吗?我在这里做的是,我有两个域类user和role,它们之间有很多关系,对于很多关系,将生成一个中间类UserRole..在user类中,我有“static hasMany=[userRoles:UserRole,userLocations:UserLocation]”,在Role类中有“static hasMany=[userRoles:UserRole]”,在UserRole类中有static belongsTo=[user:user,Role:Role]。。在用户类中,我将角色类对象添加到用户类中,以便执行此操作,我有addToUserRoles(角色),因此在controller save()中也必须有相同的方法我可以理解这两个方法相互冲突,抱歉,我的英语不是很好