grails中如何绑定参数

def bind = {
    //方式一
    //所有属性赋值
    def user = new UserInfo(params).save()
    //方式二
    //给所有属性赋值
    def user1 = UserInfo.get(params.id)
    user1.properties = params
    user1.save()
    //方式三
    //绑定指定对象，如/user/bind?user.username=张三&user.age=20&user.password=123456
    def user3 = new UserInfo(params['user'])
    user3.save()
    //方式四
    //给指定属性赋值
    def user4 = UserInfo.get(params.id)
    user4.properties['firstName','lastName'] = params
    user4.save()
    //方式五，使用bindData方法
    def user5 = new UserInfo()
    bindData(user5, params)  //给所有属性赋值
    bindData(user5, params, [exclude: ['username', 'password']]) //给exclude之外的属性赋值
    bindData(user5, params, [include: ["dataCreated", "sex"]])   //只给include中的属性赋值
}