Grails 当验证失败时，我会收到（发生异常后不要刷新会话）错误消息，为什么？
我有一个名为Grails 当验证失败时，我会收到（发生异常后不要刷新会话）错误消息，为什么？,grails,gorm,Grails,Gorm,我有一个名为Project的域类： class Project { static hasMany = [ tasks : Tasks , users : User ] static belongsTo = User String name static constraints = { name(nullable:false,unique:true, size:5..20)
Projectclass Project {
static hasMany = [ tasks : Tasks , users : User ]
static belongsTo = User
String name
static constraints = {
name(nullable:false,unique:true, size:5..20)
tasks(nullable:true)
users(nullable:true)
}
String toString() {
this.name
}
}
项目def save() {
def user = User.get(springSecurityService.principal.id)
def projectInstance = new Project(params)
projectInstance.addToUsers(user)
if (!projectInstance.save(flush: true)) {
render(view: "create", model: [projectInstance: projectInstance])
return
}
flash.message = message(code: 'default.created.message', args: [message(code: 'project.label', default: 'Project'), projectInstance.id])
redirect(action: "showCreatedProject", id: projectInstance.id)
}
项目名称失败项目名称Message: null id in mnm.schedule.Project entry (don't flush the Session after an exception occurs)
Trace: Line | Method
->> 886 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 908 | run in ''
^ 662 | run . . in java.lang.Thread
提前谢谢
addToUsers（）之后调用此方法。save（）addToUsers（）.save（）projectInstance.addToUsers（user）保存addToprojectInstance.addToUsers（user）保存添加到