我正在构建一个程序,该程序使用QWebEngineView
和QUrl
在我的PyQt5应用程序中运行网站(在Windows 10上运行)。但是,我现在希望能够从同一个网站下载CSV文件,但是作为菜鸟,我似乎不知道该怎么做。
我熟悉使用requests
,urllib.request
,urllib3
等来下载文件,但是为此,我特别想以QWebEngineView的身份来执行此操作将先前在pyqt5窗口中对请求进行身份验证。
首先显示该网站的代码如下:
self.view = QWebEngineView(self)
self.view.load(QUrl(url))
self.view.loadFinished.connect(self._on_load_finished)
self.hbox.addWidget(self.view)
有人对如何实现这一目标有任何建议吗?
答案 0 :(得分:3)
默认情况下,在QWebEngineView中不处理下载,要启用该功能,您必须使用QWebEngineProfile的downloadRequested信号,这将传输一个QWebEngineDownloadItem,如果您要开始下载,则必须接受:
from PyQt5 import QtCore, QtWidgets, QtWebEngineWidgets
class Widget(QtWidgets.QWidget):
def __init__(self, parent=None):
super(Widget, self).__init__(parent)
QtWebEngineWidgets.QWebEngineProfile.defaultProfile().downloadRequested.connect(
self.on_downloadRequested
)
self.view = QtWebEngineWidgets.QWebEngineView()
url = "https://domain/your.csv"
self.view.load(QtCore.QUrl(url))
hbox = QtWidgets.QHBoxLayout(self)
hbox.addWidget(self.view)
@QtCore.pyqtSlot("QWebEngineDownloadItem*")
def on_downloadRequested(self, download):
old_path = download.url().path() # download.path()
suffix = QtCore.QFileInfo(old_path).suffix()
path, _ = QtWidgets.QFileDialog.getSaveFileName(
self, "Save File", old_path, "*." + suffix
)
if path:
download.setPath(path)
download.accept()
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = Widget()
w.show()
sys.exit(app.exec_())
如果要直接下载,可以使用QWebEnginePage的下载方法:
self.view.page().download(QtCore.QUrl("https://domain/your.csv"))
更新:
@QtCore.pyqtSlot("QWebEngineDownloadItem*")
def on_downloadRequested(self, download):
old_path = download.url().path() # download.path()
suffix = QtCore.QFileInfo(old_path).suffix()
path, _ = QtWidgets.QFileDialog.getSaveFileName(
self, "Save File", old_path, "*." + suffix
)
if path:
download.setPath(path)
download.accept()
download.finished.connect(self.foo)
def foo(self):
print("finished")