1.用useRef获取到form表单

2.使用form的方法,validateFields触发校验

const forms = useRef(null)
const [form] = Form.useForm()

// async 和 await 写法
const onFinish = async () =>{
	const passed = forms.current.validateFields() //触发表单校验
    if(passed){
    	.....
    }
}

// 普通写法
const onFinish = () =>{
	forms.current.validateFields().then(values => {
    /*
  values:
    {
      username: 'username',
      password: 'password',
    }
  */
  })
  .catch(errorInfo => {
    /*
    errorInfo:
      {
        values: {
          username: 'username',
          password: 'password',
        },
        errorFields: [
          { name: ['password'], errors: ['Please input your Password!'] },
        ],
        outOfDate: false,
      }
    */
  });

}