# config_manager.py
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import os
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import json
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import logging
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import sys
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from config import Config
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class ConfigManager:
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_instance = None
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config = None
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def __new__(cls):
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if cls._instance is None:
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cls._instance = super(ConfigManager, cls).__new__(cls)
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cls._instance._init_config()
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return cls._instance
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def _init_config(self):
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"""初始化配置，优先使用外部JSON配置覆盖默认值"""
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# 1. 加载默认配置
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self.config = Config()
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# 2. 查找配置文件
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config_path = self._find_config_file()
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# 3. 加载并覆盖配置
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if config_path:
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try:
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with open(config_path, 'r', encoding='utf-8') as f:
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user_config = json.load(f)
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self._update_config(user_config)
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logging.info(f"成功加载外部配置文件: {config_path}")
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except Exception as e:
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logging.error(f"加载配置文件失败: {str(e)}")
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else:
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logging.warning("未找到外部配置文件，使用默认配置")
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def _find_config_file(self):
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"""查找配置文件的优先级"""
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search_paths = [
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"config.json", # 当前目录
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os.path.join(os.path.dirname(sys.executable), "config.json") if getattr(sys, 'frozen', False) else None,
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# EXE目录
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os.path.expanduser("~/.config/yourapp/config.json"), # 用户配置目录
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"/etc/yourapp/config.json" # 系统配置目录
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]
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# 过滤掉None值并保留有效路径
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valid_paths = [p for p in search_paths if p is not None]
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for path in valid_paths:
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if os.path.exists(path):
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return path
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return None
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def _update_config(self, user_config):
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"""用JSON配置更新默认配置"""
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for key, value in user_config.items():
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if hasattr(self.config, key):
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setattr(self.config, key, value)
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else:
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logging.warning(f"配置文件中存在未知配置项: {key}")
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def get_config(self):
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"""获取配置对象"""
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return self.config
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# 创建全局实例
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global_config = ConfigManager()
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