85 lines
2.5 KiB
Python
85 lines
2.5 KiB
Python
# logger_config_tkinter.py
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import logging
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import tkinter as tk
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from tkinter.scrolledtext import ScrolledText
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import queue
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class TkinterLogHandler(logging.Handler):
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"""
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自定义的 logging 处理器，将日志消息发送到 Tkinter 文本控件。
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使用队列确保线程安全。
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"""
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def __init__(self, text_widget: ScrolledText):
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super().__init__()
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self.text_widget = text_widget
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self.queue = queue.Queue()
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self._schedule_check()
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def _schedule_check(self):
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"""定期检查队列并更新 UI"""
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self._check_queue()
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# 每 100ms 检查一次队列
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self.text_widget.after(100, self._schedule_check)
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def _check_queue(self):
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"""处理队列中的日志消息"""
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try:
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while True:
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msg = self.queue.get_nowait()
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self._append_to_widget(msg)
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except queue.Empty:
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pass
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def _append_to_widget(self, msg):
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"""将消息追加到文本控件"""
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try:
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self.text_widget.configure(state=tk.NORMAL)
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self.text_widget.insert(tk.END, msg + '\n')
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self.text_widget.see(tk.END) # 滚动到底部
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self.text_widget.configure(state=tk.DISABLED)
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except Exception as e:
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# 如果控件已销毁，忽略错误
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pass
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def emit(self, record):
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"""
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处理日志记录，将其格式化并放入队列。
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"""
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try:
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msg = self.format(record)
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self.queue.put(msg)
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except Exception:
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self.handleError(record)
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def setup_logging(text_widget: ScrolledText):
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"""
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配置全局 logging，使其输出到控制台和指定的 Tkinter 文本控件。
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"""
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root_logger = logging.getLogger()
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# 设置日志级别
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root_logger.setLevel(logging.DEBUG)
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# 清除现有的处理器
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for handler in root_logger.handlers[:]:
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root_logger.removeHandler(handler)
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# 1. 控制台处理器
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console_handler = logging.StreamHandler()
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formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')
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console_handler.setFormatter(formatter)
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root_logger.addHandler(console_handler)
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# 2. Tkinter 文本控件处理器
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text_handler = TkinterLogHandler(text_widget)
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text_handler.setFormatter(formatter)
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root_logger.addHandler(text_handler)
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return root_logger
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# 获取一个全局的 logger 实例
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logger = logging.getLogger(__name__)
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