contato.js

import React from 'react'
import { Form, Icon, Input, Button } from 'antd';
const FormItem = Form.Item;

class Contato extends React.Component {
  handleSubmit = (e) => {
    e.preventDefault();
    this.props.form.validateFields((err, values) => {
      if (!err) {
        console.log('Received values of form: ', values);
      }
    });
  }
  
  render() {
   const { getFieldDecorator } = this.props.form;

    return (
      <Form onSubmit={this.handleSubmit} className="login-form">
        <FormItem>
          {getFieldDecorator('userName', {
            rules: [{ required: true, message: 'Please input your username!' }],
          })(
            <Input prefix={<Icon type="user" style={{ fontSize: 13 }} />} placeholder="Username" />
          )}
        </FormItem>
        <FormItem>
          {getFieldDecorator('password', {
            rules: [{ required: true, message: 'Please input your Password!' }],
          })(
            <Input prefix={<Icon type="lock" style={{ fontSize: 13 }} />} type="password" placeholder="Password" />
          )}
        </FormItem>
        <FormItem>
 
      {getFieldDecorator('message', {
            rules: [{ required: true, message: 'Please input your Password!' }],
          })(
            <Input prefix={<Icon type="lock" style={{ fontSize: 13 }} />}
             type="textarea" placeholder="msg" autosize={{ minRows: 2, maxRows: 6 }} />
          )}
 
          <Button type="primary" htmlType="submit" className="login-form-button">
            Log in
          </Button>
          Or <a href="">register now!</a>
        </FormItem>
      </Form>
    );
  }
}

export default Contato

// Form.create({})(???);
const ContatoForm = Form.create({})(Contato);

export {ContatoForm};
export default ContatoForm;

Ho did you manage to import antd components like...
import { Form } from 'antd'
Already saw the documentation, and I am trying to use babel-plugin-import, installed and added the plugin inside webpack-config, but it does not work yet, could you give me some advice about it.

// > JS / JSX
			{
				test: /\.(js|jsx)?$/,
				loader: 'babel-loader',
				include: [APP_FOLDER],
				exclude: /(node_modules)/,
				options: {
					plugins: [
						["import", { libraryName: "antd", style: "css" }]
					],
					presets: ['es2015', 'react', 'stage-2'],
				},
			},

Did you manage to solve the getFieldDecorator issue?... same issue here.

see this issue, I solve this problem.

component Contato should be wrapped by Form.create()(), so change L53 to export default Form.create()(Contato)

haha! So late.....