1. 首先在你的React应用程序中安装react-cookie包：

npm install react-cookie --save

2. 然后，在你的应用程序的上级目录中创建一个lambda函数，用来设置和获取Cookies。例如：

const AWS = require('aws-sdk');
const Cookie = require('cookie');

AWS.config.update({region: 'us-east-1'});

exports.handler = async (event, context) => {
  const request = event.Records[0].cf.request;
  const headers = request.headers;
  const response = event.Records[0].cf.response;

  if (request.uri === '/set-cookie') {
    const params = {
      domain: '.example.com',
      httpOnly: true,
      maxAge: 3600,
      name: 'my-cookie',
      path: '/',
      secure: true,
      value: 'example-value'
    };

    const cookieHeader = Cookie.serialize(params.name, params.value, {
      domain: params.domain,
      path: params.path,
      expires: new Date(Date.now() + params.maxAge * 1000),
      maxAge: params.maxAge,
      httpOnly: params.httpOnly,
      secure: params.secure
    });

    response.headers['set-cookie'] = [
      {
        key: 'Set-Cookie',
        value: cookieHeader
      }
    ];

    return response;
  } else if (request.uri === '/get-cookie') {
    const cookies = headers.cookie
      ? Cookie.parse(headers.cookie[0].value || '')
      : {};

    return {
      status: '200',
      body: JSON.stringify({ 'my-cookie': cookies['my-cookie'] || '' }),
      headers: {
        'content-type': [
          {
            key: 'Content-Type',
            value: 'application/json'
          },
        ],
      },
    };
  }

  return response;
};

3. 将该lambda函数与你的CloudFront分配程序配合使用，以设置和获取Cookies。

resources:
  Resources:
    MyLambdaEdge:
      Type: AWS::Serverless::Function
      Properties:
        Handler: index.handler
        CodeUri: ./build/lambda