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Qt小组件 - 6 异步运行函数

news 2025/7/17 6:23:51

WorkerThread异步运行自定义函数线程。若使用QThreadPool用来加载一些简单的函数还可以（例: 加载图片等），但是如果做http请求就不好做进程监控，事件提交

# coding: utf-8
import sysimport requests
from PySide6.QtCore import QCoreApplication
from PySide6.QtCore import QThread, Signalclass WorkerThread(QThread):result = Signal(object)  # 返回结果信息信号failed = Signal(object)  # 返回失败信息信号messageSignal = Signal(object)  # 返回提示信息信号def __init__(self, parent=None):super().__init__(parent)self.func = Noneself.args = Noneself.kwargs = Nonedef setTask(self, func, *args, **kwargs):self.func = funcself.args = argsself.kwargs = kwargsif not self.isRunning():self.start()def run(self):try:result = self.func(*self.args, **self.kwargs, messageSignal=self.messageSignal)self.result.emit(result)except Exception as e:self.failed.emit(e)def post_baidu(messageSignal:Signal):messageSignal.emit('正在访问百度')response = requests.get('https://www.baidu.com')messageSignal.emit('访问百度成功')messageSignal.emit('判断百度是否正常')response.raise_for_status()messageSignal.emit('设置返回内容编码')response.encoding = 'utf-8'messageSignal.emit('返回百度首页内容')return response.textif __name__ == '__main__':app = QCoreApplication(sys.argv)worker = WorkerThread()worker.started.connect(lambda: print('thread start'))worker.result.connect(lambda result: print(result))worker.failed.connect(lambda e: print(e))worker.messageSignal.connect(lambda message: print(message))worker.finished.connect(lambda: (app.quit(), print('thread finished')))worker.setTask(post_baidu)sys.exit(app.exec())

结果

thread start
正在访问百度
访问百度成功
判断百度是否正常
设置返回内容编码
返回百度首页内容
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