pyqt之QNetworkAccessManager

本文主要是介绍pyqt之QNetworkAccessManager，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

QNetworkAccessManager是Qt自带的一个网络请求库，网上很多说的很模糊，在这总结一下

# coding: utf-8
import json
import sys
from pathlib import Path
from typing import Union
from urllib.parse import urlencodefrom PyQt5.QtNetwork import QNetworkRequest, QNetworkAccessManager, QNetworkReply, QHttpMultiPart, QHttpPart
from PyQt5.QtCore import QUrl, pyqtSignal, QByteArray, QJsonDocument, QCoreApplication, QObject, QFile, QIODeviceclass NetworkRequestsManager(QObject):finished = pyqtSignal(QNetworkReply)def __init__(self, parent=None, *, encoding='utf-8'):super().__init__(parent)self._reply = None  # type: QNetworkReplyself._encoding = encodingself.networkAccessManager = QNetworkAccessManager(parent)self.networkAccessManager.finished.connect(self.finished)def get(self, url: Union[str, QUrl], params=None, headers=None):request = QNetworkRequest(self.__initUrl(url, params))self.__initHeaders(request, headers)self.networkAccessManager.get(request)def post(self, url: Union[str, QUrl], params: dict = None, json: dict = None, headers: dict = None):request = QNetworkRequest(self.__initUrl(url, params))self.__initHeaders(request, headers)self.networkAccessManager.post(request, self.__initJson(json))def file_post(self, url: Union[str, QUrl], file: dict, headers: dict = None):request = QNetworkRequest(self.__initUrl(url, params))multiPart = QHttpMultiPart(QHttpMultiPart.FormDataType)for item in file.items():httpPart = QHttpPart()file = QFile(item[1])file.open(QIODevice.ReadOnly)httpPart.setHeader(QNetworkRequest.ContentDispositionHeader,f'form-data; name="{item[0]}"; filename="{Path(item[1]).name}"')httpPart.setBodyDevice(file)file.setParent(multiPart)multiPart.append(httpPart)self.__initHeaders(request, headers)self.networkAccessManager.post(request, multiPart)def __initUrl(self, url: Union[str, QUrl], params: dict = None) -> QUrl:if isinstance(url, str):url = QUrl(url)url.setQuery(urlencode(params), QUrl.ParsingMode.TolerantMode)return urldef __initHeaders(self, request: QNetworkRequest, headers: dict = None):if headers is None:returnfor item in headers.items():request.setRawHeader(item[0].encode(), item[1].encode())def __initJson(self, json: dict = None):if json is None:returnreturn QJsonDocument(json).toJson()if __name__ == '__main__':# 这是一个联想壁纸的接口app = QCoreApplication(sys.argv)manager = NetworkRequestsManager()params = {"skip": "0","limit": "54","count": "76873","tagId": "-1","colorId": "-1","classId": "-1","refresh": "true","priceId": "0"}url = 'https://pc-store.lenovomm.cn/wallpapercontent/wallpaper/class_wallpaper_list'headers = {"token": "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzbWJPcHRpb25zIjoiMSIsImJ1c2luZXNzS2V5IjoiIiwiY2hhbm5lbCI6IjIwMDA1IiwiZnJvbSI6ImluZHN0b3JlIiwidmVyc2lvbk5hbWUiOiI5LjAuMTMzMC4yMDEiLCJleHAiOjIzNDI4NjY3NzEsInZlcnNpb25Db2RlIjoiOS4wLjEzMzAuMjAxIn0.2_R46WPaT2BCy_NcbewdfosiSlLEMdNRX9cJIoqb6eY","user-agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36&PCStore"}manager.get(QUrl(url), params, headers=headers)def response(reply: QNetworkReply):if reply.error() == reply.NoError:print(json.loads(reply.readAll().data().decode('utf-8')))else:print(reply.errorString())manager.finished.connect(response)sys.exit(app.exec_())

这篇关于pyqt之QNetworkAccessManager的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！

---