thinkphp5.0验证

<?php
namespace app\index\validate;
use think\Validate;
class Login extends Validate
{
    protected $rule = [
        'username'=>'require|unique:login',
        'password'=>'require',
        'email'=>'require|email',
        'con'=>'require',

    ];
    protected $message = [
        'username.require'=>'请填写用户名称',
        'username.unique'=>'用户名称不能重复',
        'password.require'=>'请输入用户密码',

        'email.require'=>'请填写用户邮箱',
        'con.require'=>'请填写内容',
    ];
}