Tạo Lambda Function để Ghi dữ liệu

import boto3
import json

dynamodb = boto3.resource("dynamodb")
table = dynamodb.Table("Books-WS78")

def lambda_handler(event, context):
    try:
        body = event.get("body")

        # Handle both API Gateway (string) and test event (dict)
        if isinstance(body, str):
            book_item = json.loads(body)
        elif isinstance(body, dict):
            book_item = body
        else:
            raise ValueError("Invalid request body")

        table.put_item(Item=book_item)

        return {
            "statusCode": 200,
            "body": json.dumps({
                "message": "Data successfully written to DynamoDB!"
            }),
            "headers": {
                "Content-Type": "application/json"
            }
        }

    except Exception as error:
        print("Error:", str(error))
        return {
            "statusCode": 400,
            "body": json.dumps({
                "message": "Failed to write data to DynamoDB.",
                "error": str(error)
            }),
            "headers": {
                "Content-Type": "application/json"
            }
        }

{
  "body": {
      "id": "1",
      "name": "Java Programming",
      "author": "Alex Smith",
      "category": "Technology",
      "price": "10.89",
      "description": "Hướng dẫn lập trình Java cơ bản",
      "image": "https://book-image-resize-stores-tranvix.s3.ap-southeast-1.amazonaws.com/Notification.png"
  }
}