<Form.Item>
   {
    getFieldDecorator('userName', { initialValue: 'Tom' },{
    rules: [{
     required: true, message: '请输入用户名',
    }],
    })(
    <Input placeholder='请输入用户名'/>
    )
   }
</Form.Item>

<Form.Item>
 {
 getFieldDecorator('userName',{
  initialValue:'Tom',
  rules:[
   {required: true,message:'请输入用户名'}
    ]
   })(
   <Input placeholder='请输入用户名'/>
   )
}
</Form.Item>

this.props.form.setFieldsValue({
 inputValue1:this.state.inputValue1,
 inputValue2:this.state.inputValue2,
 inputValue3:this.state.inputValue3,
});

handleSubmit = (e) => {
  e.preventDefault();
  this.props.form.validateFields((err) => {
   if (err) {
    console.log('表单验证失败');
   }else{
    this.handleOk();//这里是表单验证成功执行的函数
    
   }
  });
 
 };

 componentDidMount() {
  const { onChange } = this.props;
  onChange({
   ...this.state,
  });
 }