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如何使用 Cloud Python SDK 提取或附加 PDF 文档中的附件
为了处理 PDF 文档中的附件，我们将使用 Aspose.PDF Cloud Python SDK 这个 Cloud SDK 帮助 Python 程序员使用 Python 编程语言通过 Aspose.PDF REST API 开发基于云的 PDF 创建、注释、编辑和转换应用程序。只需在 Aspose for Cloud 创建一个帐户并获取您的应用程序信息。一旦您拥有 App SID 和密钥，您就可以开始使用 Aspose.PDF Cloud Python SDK。如果 Python 软件包托管在 Github 上，您可以直接从 Github 安装：
从 Github 安装
pip install git+https://github.com/aspose-pdf-cloud/aspose-pdf-cloud-python.git
包管理器控制台命令
pip install asposepdfcloud
通过 Python SDK 获取附件的步骤
Aspose.PDF Cloud Python 开发人员可以轻松提取和附加 PDF 文档中的附件。开发人员只需几行代码。
- 从 JSON 文件中加载您的应用程序密钥和密钥，或以其他方式设置凭据
- 创建一个对象以连接到 Cloud API
- 设置文档文件的名称和路径
- 执行提取附件操作
- Cloud API 函数的响应将包含附件列表
此示例代码演示如何使用 PDF Cloud Python SDK 提取 PDF 文档的附件
import shutil
import json
import logging
from pathlib import Path
from asposepdfcloud import ApiClient, PdfApi, AttachmentsResponse, AttachmentResponse, Attachment
# Configure logging
logging.basicConfig(level=logging.INFO, format="%(asctime)s - %(levelname)s - %(message)s")
class Config:
"""Configuration parameters."""
CREDENTIALS_FILE = Path(r"C:\\Projects\\ASPOSE\\Pdf.Cloud\\Credentials\\credentials.json")
LOCAL_FOLDER = Path(r"C:\Samples")
PDF_DOCUMENT_NAME = "sample_file_with_attachment.pdf"
ATTACHMENT_PATH = ""
class PdfAttachments:
"""Class for managing PDF attachments using Aspose PDF Cloud API."""
def __init__(self, credentials_file: Path = Config.CREDENTIALS_FILE):
self.pdf_api = None
self._init_api(credentials_file)
def _init_api(self, credentials_file: Path):
"""Initialize the API client."""
try:
with credentials_file.open("r", encoding="utf-8") as file:
credentials = json.load(file)
api_key, app_id = credentials.get("key"), credentials.get("id")
if not api_key or not app_id:
raise ValueError("init_api(): Error: Missing API keys in the credentials file.")
self.pdf_api = PdfApi(ApiClient(api_key, app_id))
except (FileNotFoundError, json.JSONDecodeError, ValueError) as e:
logging.error(f"init_api(): Failed to load credentials: {e}")
def upload_document(self):
"""Upload a PDF document to the Aspose Cloud server."""
if self.pdf_api:
file_path = Config.LOCAL_FOLDER / Config.PDF_DOCUMENT_NAME
try:
self.pdf_api.upload_file(Config.PDF_DOCUMENT_NAME, str(file_path))
logging.info(f"upload_document(): File {Config.PDF_DOCUMENT_NAME} uploaded successfully.")
except Exception as e:
logging.error(f"upload_document(): Failed to upload file: {e}")
def get_attachments(self):
"""Get attachments for the PDF document."""
if self.pdf_api:
try:
response : AttachmentsResponse = self.pdf_api.get_document_attachments(Config.PDF_DOCUMENT_NAME)
if response.code == 200:
logging.info(f"get_attachmnets(): attachments '{response.attachments}' for the document '{Config.PDF_DOCUMENT_NAME}'.")
Config.ATTACHMENT_PATH = response.attachments.list[0].links[0].href
else:
logging.error(f"get_attachmnets(): Failed to get attachments to the document. Response code: {response.code}")
except Exception as e:
logging.error(f"get_attachmnets(): Error while adding attachment: {e}")
def get_attachment_by_id(self):
"""Get attachment by Id for the PDF document and save it to local file."""
if self.pdf_api:
try:
response : AttachmentResponse = self.pdf_api.get_document_attachment_by_index(Config.PDF_DOCUMENT_NAME, Config.ATTACHMENT_PATH)
if response.code == 200:
attachment: Attachment = response.attachment
temp_file = self.pdf_api.get_download_document_attachment_by_index(Config.PDF_DOCUMENT_NAME, Config.ATTACHMENT_PATH)
local_path = Config.LOCAL_FOLDER / attachment.name
shutil.copy(temp_file, local_path)
logging.info(f"get_attachment_by_id(): attachment '{local_path}' for the document '{Config.PDF_DOCUMENT_NAME}' successfuly saved.")
else:
logging.error(f"get_attachment_by_id(): Failed to get attachment for the document '{Config.PDF_DOCUMENT_NAME}'. Response code: {response.code}")
except Exception as e:
logging.error(f"get_attachment_by_id(): Error while get attachment: {e}")
if __name__ == "__main__":
pdf_attachments = PdfAttachments()
pdf_attachments.upload_document()
pdf_attachments.get_attachments()
pdf_attachments.get_attachment_by_id()