From b774e5d1ed1ac8a4e84d8be6e8f6d1ace8beacdc Mon Sep 17 00:00:00 2001 From: Doiiars Date: Wed, 5 Nov 2025 11:35:18 +0800 Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8Dnews-id=E5=86=B2=E7=AA=81?= =?UTF-8?q?=E9=97=AE=E9=A2=98?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../BroadTopicExtraction/database_manager.py | 95 +++++++++++-------- 1 file changed, 55 insertions(+), 40 deletions(-) diff --git a/MindSpider/BroadTopicExtraction/database_manager.py b/MindSpider/BroadTopicExtraction/database_manager.py index 8f1ede7..5c7b662 100644 --- a/MindSpider/BroadTopicExtraction/database_manager.py +++ b/MindSpider/BroadTopicExtraction/database_manager.py @@ -25,14 +25,15 @@ except ImportError: from config import settings + class DatabaseManager: """数据库管理器""" - + def __init__(self): """初始化数据库管理器""" self.engine: Engine = None self.connect() - + def connect(self): """连接数据库""" try: @@ -46,46 +47,47 @@ class DatabaseManager: except ModuleNotFoundError as e: missing: str = str(e) if "psycopg" in missing: - logger.error("数据库连接失败: 未安装PostgreSQL驱动 psycopg。请安装: psycopg[binary]。参考指令：uv pip install psycopg[binary]") + logger.error( + "数据库连接失败: 未安装PostgreSQL驱动 psycopg。请安装: psycopg[binary]。参考指令：uv pip install psycopg[binary]") elif "pymysql" in missing: logger.error("数据库连接失败: 未安装MySQL驱动 pymysql。请安装: pymysql。参考指令：uv pip install pymysql") else: logger.error(f"数据库连接失败(缺少驱动): {e}") raise except Exception as e: - logger.error(f"数据库连接失败: {e}") + logger.exception(f"数据库连接失败: {e}") raise - + def close(self): """关闭数据库连接""" if self.engine: self.engine.dispose() logger.info("数据库连接已关闭") - + def __enter__(self): return self - + def __exit__(self, exc_type, exc_val, exc_tb): self.close() - + # ==================== 新闻数据操作 ==================== - + def save_daily_news(self, news_data: List[Dict], crawl_date: date = None) -> int: """ 保存每日新闻数据，如果当天已有数据则覆盖 - + Args: news_data: 新闻数据列表 crawl_date: 爬取日期，默认为今天 - + Returns: 保存的新闻数量 """ if not crawl_date: crawl_date = date.today() - + current_timestamp = int(datetime.now().timestamp()) - + try: saved_count = 0 # 先独立事务执行删除，防止后续插入失败导致无法清理 @@ -97,7 +99,13 @@ class DatabaseManager: # 逐条插入，单条失败不影响后续（每条独立事务） for news_item in news_data: try: - news_id = f"{news_item.get('source', 'unknown')}_{news_item.get('id', news_item.get('rank', 0))}" + # news_item.get('id') 已经是完整的 news_id（格式：source_item_id） + # 为了支持同一条新闻在不同日期出现，将 crawl_date 加入到 news_id 中 + base_news_id = news_item.get( + 'id') or f"{news_item.get('source', 'unknown')}_rank_{news_item.get('rank', 0)}" + # 将日期格式化为字符串并加入到 news_id 中，确保全局唯一性 + news_id = f"{base_news_id}_{crawl_date.strftime('%Y%m%d')}" + title_val = (news_item.get("title", "") or "") if len(title_val) > 500: title_val = title_val[:500] @@ -124,27 +132,27 @@ class DatabaseManager: ) saved_count += 1 except Exception as e: - logger.warning(f"保存单条新闻失败: {e}") + logger.exception(f"保存单条新闻失败: {e}") continue logger.info(f"成功保存 {saved_count} 条新闻记录") return saved_count except Exception as e: logger.exception(f"保存新闻数据失败: {e}") return 0 - + def get_daily_news(self, crawl_date: date = None) -> List[Dict]: """ 获取每日新闻数据 - + Args: crawl_date: 爬取日期，默认为今天 - + Returns: 新闻列表 """ if not crawl_date: crawl_date = date.today() - + query = ( "SELECT * FROM daily_news WHERE crawl_date = :d ORDER BY rank_position ASC" ) @@ -152,39 +160,43 @@ class DatabaseManager: result = conn.execute(text(query), {"d": crawl_date}) rows = result.mappings().all() return rows - + # ==================== 话题数据操作 ==================== - + def save_daily_topics(self, keywords: List[str], summary: str, extract_date: date = None) -> bool: """ 保存每日话题分析 - + Args: keywords: 话题关键词列表 summary: 新闻分析总结 extract_date: 提取日期，默认为今天 - + Returns: 是否保存成功 """ if not extract_date: extract_date = date.today() - + current_timestamp = int(datetime.now().timestamp()) - + try: keywords_json = json.dumps(keywords, ensure_ascii=False) + # 为了支持外键引用，topic_id 需要全局唯一，所以将日期加入到 topic_id 中 + topic_id = f"summary_{extract_date.strftime('%Y%m%d')}" + with self.engine.begin() as conn: check = conn.execute( text("SELECT id FROM daily_topics WHERE extract_date = :d AND topic_id = :tid"), - {"d": extract_date, "tid": "summary"}, + {"d": extract_date, "tid": topic_id}, ).first() if check: conn.execute( text( "UPDATE daily_topics SET keywords = :k, topic_description = :s, add_ts = :ts, last_modify_ts = :lmt, topic_name = :tn WHERE extract_date = :d AND topic_id = :tid" ), - {"k": keywords_json, "s": summary, "ts": current_timestamp, "lmt": current_timestamp, "d": extract_date, "tid": "summary", "tn": "每日新闻分析"}, + {"k": keywords_json, "s": summary, "ts": current_timestamp, "lmt": current_timestamp, + "d": extract_date, "tid": topic_id, "tn": "每日新闻分析"}, ) logger.info(f"更新了 {extract_date} 的话题分析") else: @@ -192,30 +204,32 @@ class DatabaseManager: text( "INSERT INTO daily_topics (extract_date, topic_id, topic_name, keywords, topic_description, add_ts, last_modify_ts) VALUES (:d, :tid, :tn, :k, :s, :ts, :lmt)" ), - {"d": extract_date, "tid": "summary", "tn": "每日新闻分析", "k": keywords_json, "s": summary, "ts": current_timestamp, "lmt": current_timestamp}, + {"d": extract_date, "tid": topic_id, "tn": "每日新闻分析", "k": keywords_json, "s": summary, + "ts": current_timestamp, "lmt": current_timestamp}, ) logger.info(f"保存了 {extract_date} 的话题分析") return True except Exception as e: logger.exception(f"保存话题分析失败: {e}") return False - + def get_daily_topics(self, extract_date: date = None) -> Optional[Dict]: """ 获取每日话题分析 - + Args: extract_date: 提取日期，默认为今天 - + Returns: 话题分析数据，如果不存在返回None """ if not extract_date: extract_date = date.today() - + try: with self.engine.connect() as conn: - result = conn.execute(text("SELECT * FROM daily_topics WHERE extract_date = :d"), {"d": extract_date}).mappings().first() + result = conn.execute(text("SELECT * FROM daily_topics WHERE extract_date = :d"), + {"d": extract_date}).mappings().first() if result: result = dict(result) # 转为可变dict以支持item赋值 result["keywords"] = json.loads(result["keywords"]) if result.get("keywords") else [] @@ -224,14 +238,14 @@ class DatabaseManager: except Exception as e: logger.exception(f"获取话题分析失败: {e}") return None - + def get_recent_topics(self, days: int = 7) -> List[Dict]: """ 获取最近几天的话题分析 - + Args: days: 天数 - + Returns: 话题分析列表 """ @@ -254,9 +268,9 @@ class DatabaseManager: except Exception as e: logger.exception(f"获取最近话题分析失败: {e}") return [] - + # ==================== 统计查询 ==================== - + def get_summary_stats(self, days: int = 7) -> Dict: """获取统计摘要""" try: @@ -290,18 +304,19 @@ class DatabaseManager: logger.exception(f"获取统计摘要失败: {e}") return {"news_stats": [], "topics_stats": []} + if __name__ == "__main__": # 测试数据库管理器 with DatabaseManager() as db: # 测试获取新闻 news = db.get_daily_news() logger.info(f"今日新闻数量: {len(news)}") - + # 测试获取话题 topics = db.get_daily_topics() if topics: logger.info(f"今日话题关键词: {topics['keywords']}") else: logger.info("今日暂无话题分析") - + logger.info("简化数据库管理器测试完成！")