mirror of
https://gitee.com/g1879/DrissionPage.git
synced 2024-12-10 04:00:23 +08:00
661 lines
25 KiB
Python
661 lines
25 KiB
Python
# -*- coding:utf-8 -*-
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from json import loads
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from time import perf_counter, sleep
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from requests import Session
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from .base import BasePage
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from .chromium_element import ChromiumElementWaiter, ChromeScroll, ChromiumElement, run_script
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from .common import get_loc
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from .config import cookies_to_tuple
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from .session_element import make_session_ele
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from .tab import Tab
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class ChromiumBase(BasePage):
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"""标签页、frame、页面基类"""
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def __init__(self, address, tab_id=None, timeout=None):
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"""初始化 \n
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:param address: 浏览器 ip:port
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:param tab_id: 要控制的标签页id，不指定默认为激活的
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:param timeout: 超时时间
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"""
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super().__init__(timeout)
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self._is_loading = None
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self._root_id = None
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self._debug = False
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self._debug_recorder = None
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self.timeouts = Timeout(self)
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self._connect_browser(address, tab_id)
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def _connect_browser(self, addr_tab_opts=None, tab_id=None):
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"""连接浏览器，在第一次时运行 \n
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:param addr_tab_opts: 浏览器地址、Tab对象或DriverOptions对象
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:param tab_id: 要控制的标签页id，不指定默认为激活的
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:return: None
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"""
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self._root_id = None
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self._control_session = Session()
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self._control_session.keep_alive = False
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self._first_run = True
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self._is_reading = False # 用于避免不同线程重复读取document
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self.address = addr_tab_opts
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if not tab_id:
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json = self._control_session.get(f'http://{self.address}/json').json()
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tab_id = [i['id'] for i in json if i['type'] == 'page'][0]
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self._set_options()
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self._init_page(tab_id)
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self._get_document()
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self._first_run = False
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def _init_page(self, tab_id=None):
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"""新建页面、页面刷新、切换标签页后要进行的cdp参数初始化
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:param tab_id: 要跳转到的标签页id
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:return: None
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"""
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self._is_loading = True
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if tab_id:
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self._tab_obj = Tab(id=tab_id, type='page',
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webSocketDebuggerUrl=f'ws://{self.address}/devtools/page/{tab_id}')
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self._tab_obj.start()
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self._tab_obj.DOM.enable()
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self._tab_obj.Page.enable()
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self._tab_obj.Page.frameStoppedLoading = self._onFrameStoppedLoading
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self._tab_obj.Page.frameStartedLoading = self._onFrameStartedLoading
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self._tab_obj.DOM.documentUpdated = self._onDocumentUpdated
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self._tab_obj.Page.loadEventFired = self._onLoadEventFired
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self._tab_obj.Page.frameNavigated = self._onFrameNavigated
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def _get_document(self):
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"""刷新cdp使用的document数据"""
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if not self._is_reading:
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self._is_reading = True
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if self._debug:
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print('获取document')
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if self._debug_recorder:
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self._debug_recorder.add_data((perf_counter(), '获取document', '开始'))
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self._wait_loading()
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while True:
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try:
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root_id = self._tab_obj.DOM.getDocument()['root']['nodeId']
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if self._debug_recorder:
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self._debug_recorder.add_data((perf_counter(), '信息', f'root_id：{root_id}'))
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self._root_id = self._tab_obj.DOM.resolveNode(nodeId=root_id)['object']['objectId']
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break
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except Exception:
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if self._debug_recorder:
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self._debug_recorder.add_data((perf_counter(), 'err', '读取root_id出错'))
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if self._debug:
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print('获取document结束')
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if self._debug_recorder:
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self._debug_recorder.add_data((perf_counter(), '获取document', '结束'))
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self._is_loading = False
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self._is_reading = False
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def _wait_loading(self, timeout=None):
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"""等待页面加载完成
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:param timeout: 超时时间
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:return: 是否成功，超时返回False
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"""
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timeout = timeout if timeout is not None else self.timeouts.page_load
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end_time = perf_counter() + timeout
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while perf_counter() < end_time:
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state = self.ready_state
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if self._debug_recorder:
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self._debug_recorder.add_data((perf_counter(), 'waiting', state))
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if state == 'complete':
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return True
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elif self.page_load_strategy == 'eager' and state in ('interactive', 'complete'):
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self.stop_loading()
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return True
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elif self.page_load_strategy == 'none':
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self.stop_loading()
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return True
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sleep(.1)
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self.stop_loading()
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return False
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def _onFrameStartedLoading(self, **kwargs):
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"""页面开始加载时触发"""
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if kwargs['frameId'] == self.tab_id:
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self._is_loading = True
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if self._debug:
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print('页面开始加载 FrameStartedLoading')
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if self._debug_recorder:
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self._debug_recorder.add_data((perf_counter(), '加载流程', 'FrameStartedLoading'))
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def _onFrameStoppedLoading(self, **kwargs):
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"""页面加载完成后触发"""
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if kwargs['frameId'] == self.tab_id and self._first_run is False and self._is_loading:
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if self._debug:
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print('页面停止加载 FrameStoppedLoading')
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if self._debug_recorder:
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self._debug_recorder.add_data((perf_counter(), '加载流程', 'FrameStoppedLoading'))
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self._get_document()
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def _onLoadEventFired(self, **kwargs):
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"""在页面刷新、变化后重新读取页面内容"""
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if self._debug:
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print('loadEventFired')
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if self._debug_recorder:
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self._debug_recorder.add_data((perf_counter(), '加载流程', 'loadEventFired'))
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def _onDocumentUpdated(self, **kwargs):
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"""页面跳转时触发"""
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if self._debug:
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print('documentUpdated')
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if self._debug_recorder:
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self._debug_recorder.add_data((perf_counter(), '加载流程', 'documentUpdated'))
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def _onFrameNavigated(self, **kwargs):
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"""页面跳转时触发"""
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if self._debug and not kwargs['frame'].get('parentId', None):
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print('navigated')
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if self._debug_recorder:
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self._debug_recorder.add_data((perf_counter(), '加载流程', 'navigated'))
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def _set_options(self):
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pass
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def __call__(self, loc_or_str, timeout=None):
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"""在内部查找元素 \n
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例：ele = page('@id=ele_id') \n
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:param loc_or_str: 元素的定位信息，可以是loc元组，或查询字符串
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:param timeout: 超时时间
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:return: ChromiumElement对象
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"""
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return self.ele(loc_or_str, timeout)
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@property
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def title(self):
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"""返回当前页面title"""
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return self._tab_obj.Target.getTargetInfo(targetId=self.tab_id)['targetInfo']['title']
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@property
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def driver(self):
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"""返回用于控制浏览器的Tab对象"""
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return self._tab_obj
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@property
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def _driver(self):
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return self._tab_obj
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@property
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def _wait_driver(self):
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"""返回用于控制浏览器的Tab对象，会先等待页面加载完毕"""
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while self._is_loading:
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sleep(.1)
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return self._tab_obj
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@property
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def is_loading(self):
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"""返回页面是否正在加载状态"""
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return self._is_loading
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@property
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def url(self):
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"""返回当前页面url"""
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return self._tab_obj.Target.getTargetInfo(targetId=self.tab_id)['targetInfo']['url']
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@property
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def html(self):
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"""返回当前页面html文本"""
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return self._wait_driver.DOM.getOuterHTML(objectId=self._root_id)['outerHTML']
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@property
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def json(self):
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"""当返回内容是json格式时，返回对应的字典"""
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return loads(self('t:pre').text)
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@property
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def tab_id(self):
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"""返回当前标签页id"""
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return self.driver.id if self.driver.status == 'started' else ''
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@property
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def ready_state(self):
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"""返回当前页面加载状态，'loading' 'interactive' 'complete'"""
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return self._tab_obj.Runtime.evaluate(expression='document.readyState;')['result']['value']
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@property
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def size(self):
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"""返回页面总长高，格式：(长, 高)"""
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w = self.run_script('document.body.scrollWidth;', as_expr=True)
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h = self.run_script('document.body.scrollHeight;', as_expr=True)
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return w, h
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@property
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def active_ele(self):
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"""返回当前焦点所在元素"""
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return self.run_script('return document.activeElement;')
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@property
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def page_load_strategy(self):
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"""返回页面加载策略"""
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return self._page_load_strategy
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@property
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def scroll(self):
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"""返回用于滚动滚动条的对象"""
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if not hasattr(self, '_scroll'):
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self._scroll = ChromeScroll(self)
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return self._scroll
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@property
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def set_page_load_strategy(self):
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"""返回用于设置页面加载策略的对象"""
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return PageLoadStrategy(self)
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def set_timeouts(self, implicit=None, page_load=None, script=None):
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"""设置超时时间，单位为秒 \n
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:param implicit: 查找元素超时时间
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:param page_load: 页面加载超时时间
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:param script: 脚本运行超时时间
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:return: None
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"""
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if implicit is not None:
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self.timeout = implicit
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if page_load is not None:
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self.timeouts.page_load = page_load
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if script is not None:
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self.timeouts.script = script
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def run_script(self, script, as_expr=False, *args):
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"""运行javascript代码 \n
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:param script: js文本
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:param as_expr: 是否作为表达式运行，为True时args无效
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:param args: 参数，按顺序在js文本中对应argument[0]、argument[2]...
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:return: 运行的结果
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"""
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return run_script(self, script, as_expr, self.timeouts.script, args)
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def run_async_script(self, script, as_expr=False, *args):
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"""以异步方式执行js代码 \n
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:param script: js文本
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:param as_expr: 是否作为表达式运行，为True时args无效
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:param args: 参数，按顺序在js文本中对应argument[0]、argument[2]...
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:return: None
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"""
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from threading import Thread
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Thread(target=run_script, args=(self, script, as_expr, self.timeouts.script, args)).start()
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def get(self, url, show_errmsg=False, retry=None, interval=None, timeout=None):
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"""访问url \n
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:param url: 目标url
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:param show_errmsg: 是否显示和抛出异常
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:param retry: 重试次数
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:param interval: 重试间隔（秒）
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:param timeout: 连接超时时间
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:return: 目标url是否可用
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"""
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retry, interval = self._before_connect(url, retry, interval)
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self._url_available = self._d_connect(self._url,
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times=retry,
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interval=interval,
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show_errmsg=show_errmsg,
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timeout=timeout)
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return self._url_available
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def get_cookies(self, as_dict=False):
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"""获取cookies信息 \n
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:param as_dict: 为True时返回由{name: value}键值对组成的dict
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:return: cookies信息
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"""
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cookies = self._wait_driver.Network.getCookies()['cookies']
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if as_dict:
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return {cookie['name']: cookie['value'] for cookie in cookies}
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else:
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return cookies
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def set_cookies(self, cookies):
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"""设置cookies值 \n
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:param cookies: cookies信息
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:return: None
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"""
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cookies = cookies_to_tuple(cookies)
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result_cookies = []
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for cookie in cookies:
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if not cookie.get('domain', None):
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continue
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c = {'value': '' if cookie['value'] is None else cookie['value'],
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'name': cookie['name'],
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'domain': cookie['domain']}
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result_cookies.append(c)
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self._wait_driver.Network.setCookies(cookies=result_cookies)
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# def set_headers(self, headers: dict) -> None:
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# """设置固定发送的headers \n
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# :param headers: dict格式的headers数据
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# :return: None
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# """
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# self.run_cdp('Network.setExtraHTTPHeaders', headers=headers)
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def ele(self, loc_or_ele, timeout=None):
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"""获取第一个符合条件的元素对象 \n
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:param loc_or_ele: 定位符或元素对象
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:param timeout: 查找超时时间
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:return: ChromiumElement对象
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"""
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return self._ele(loc_or_ele, timeout=timeout)
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def eles(self, loc_or_str, timeout=None):
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"""获取所有符合条件的元素对象 \n
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:param loc_or_str: 定位符或元素对象
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:param timeout: 查找超时时间
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:return: ChromiumElement对象组成的列表
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"""
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return self._ele(loc_or_str, timeout=timeout, single=False)
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def s_ele(self, loc_or_ele=None):
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"""查找第一个符合条件的元素以SessionElement形式返回，处理复杂页面时效率很高 \n
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:param loc_or_ele: 元素的定位信息，可以是loc元组，或查询字符串
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:return: SessionElement对象或属性、文本
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"""
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return make_session_ele(self, loc_or_ele)
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def s_eles(self, loc_or_str=None):
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"""查找所有符合条件的元素以SessionElement列表形式返回 \n
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:param loc_or_str: 元素的定位信息，可以是loc元组，或查询字符串
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:return: SessionElement对象组成的列表
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"""
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return make_session_ele(self, loc_or_str, single=False)
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def _ele(self, loc_or_ele, timeout=None, single=True, relative=False):
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"""执行元素查找
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:param loc_or_ele: 定位符或元素对象
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:param timeout: 查找超时时间
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:param single: 是否只返回第一个
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:return: ChromiumElement对象或元素对象组成的列表
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"""
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if isinstance(loc_or_ele, (str, tuple)):
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loc = get_loc(loc_or_ele)[1]
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elif isinstance(loc_or_ele, ChromiumElement) or str(type(loc_or_ele)).endswith(".ChromiumFrame'>"):
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return loc_or_ele
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else:
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raise ValueError('loc_or_str参数只能是tuple、str、ChromiumElement类型。')
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timeout = timeout if timeout is not None else self.timeout
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search_result = self._wait_driver.DOM.performSearch(query=loc, includeUserAgentShadowDOM=True)
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count = search_result['resultCount']
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end_time = perf_counter() + timeout
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while count == 0 and perf_counter() < end_time:
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search_result = self._wait_driver.DOM.performSearch(query=loc, includeUserAgentShadowDOM=True)
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count = search_result['resultCount']
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if count == 0:
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return None if single else []
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count = 1 if single else count
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nodeIds = self._wait_driver.DOM.getSearchResults(searchId=search_result['searchId'], fromIndex=0,
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toIndex=count)
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eles = []
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for i in nodeIds['nodeIds']:
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ele = ChromiumElement(self, node_id=i)
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if ele.tag in ('iframe', 'frame'):
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from .chromium_frame import ChromiumFrame
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ele = ChromiumFrame(self, ele)
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eles.append(ele)
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return eles[0] if single else eles
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def wait_ele(self, loc_or_ele, timeout=None):
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"""返回用于等待元素到达某个状态的等待器对象 \n
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:param loc_or_ele: 可以是元素、查询字符串、loc元组
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:param timeout: 等待超时时间
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:return: 用于等待的ElementWaiter对象
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"""
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return ChromiumElementWaiter(self, loc_or_ele, timeout)
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def scroll_to_see(self, loc_or_ele):
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"""滚动页面直到元素可见 \n
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:param loc_or_ele: 元素的定位信息，可以是loc元组，或查询字符串（详见ele函数注释）
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:return: None
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"""
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node_id = self.ele(loc_or_ele).node_id
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try:
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self._wait_driver.DOM.scrollIntoViewIfNeeded(nodeId=node_id)
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except Exception:
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self.ele(loc_or_ele).run_script("this.scrollIntoView();")
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def refresh(self, ignore_cache=False):
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"""刷新当前页面 \n
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:param ignore_cache: 是否忽略缓存
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:return: None
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"""
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self._is_loading = True
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self._driver.Page.reload(ignoreCache=ignore_cache)
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def forward(self, steps=1):
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"""在浏览历史中前进若干步 \n
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:param steps: 前进步数
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:return: None
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"""
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self._forward_or_back(steps)
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def back(self, steps=1):
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"""在浏览历史中后退若干步 \n
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:param steps: 后退步数
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:return: None
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"""
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self._forward_or_back(-steps)
|
||
|
||
def _forward_or_back(self, steps):
|
||
"""执行浏览器前进或后退，会跳过url相同的历史记录
|
||
:param steps: 步数
|
||
:return: None
|
||
"""
|
||
if steps == 0:
|
||
return
|
||
|
||
history = self.run_cdp('Page.getNavigationHistory')
|
||
index = history['currentIndex']
|
||
history = history['entries']
|
||
direction = 1 if steps > 0 else -1
|
||
curr_url = history[index]['userTypedURL']
|
||
nid = None
|
||
for num in range(abs(steps)):
|
||
for i in history[index::direction]:
|
||
index += direction
|
||
if i['userTypedURL'] != curr_url:
|
||
nid = i['id']
|
||
curr_url = i['userTypedURL']
|
||
break
|
||
|
||
if nid:
|
||
self._is_loading = True
|
||
self.run_cdp('Page.navigateToHistoryEntry', entryId=nid)
|
||
|
||
def stop_loading(self):
|
||
"""页面停止加载"""
|
||
if self._debug:
|
||
print('停止页面加载')
|
||
if self._debug_recorder:
|
||
self._debug_recorder.add_data((perf_counter(), '操作', '停止页面加载'))
|
||
|
||
self._tab_obj.Page.stopLoading()
|
||
while self.ready_state != 'complete':
|
||
sleep(.1)
|
||
|
||
def run_cdp(self, cmd, **cmd_args):
|
||
"""执行Chrome DevTools Protocol语句 \n
|
||
:param cmd: 协议项目
|
||
:param cmd_args: 参数
|
||
:return: 执行的结果
|
||
"""
|
||
if cmd_args.get('not_change', None):
|
||
driver = self._tab_obj
|
||
cmd_args.pop('not_change')
|
||
else:
|
||
driver = self._driver
|
||
|
||
try:
|
||
return driver.call_method(cmd, **cmd_args)
|
||
except Exception as e:
|
||
if 'Could not find node with given id' in str(e):
|
||
raise RuntimeError('该元素已不在当前页面中。')
|
||
raise
|
||
|
||
def set_user_agent(self, ua):
|
||
"""为当前tab设置user agent，只在当前tab有效 \n
|
||
:param ua: user agent字符串
|
||
:return: None
|
||
"""
|
||
self._wait_driver.Network.setUserAgentOverride(userAgent=ua)
|
||
|
||
def get_session_storage(self, item=None):
|
||
"""获取sessionStorage信息，不设置item则获取全部 \n
|
||
:param item: 要获取的项，不设置则返回全部
|
||
:return: sessionStorage一个或所有项内容
|
||
"""
|
||
js = f'sessionStorage.getItem("{item}");' if item else 'sessionStorage;'
|
||
return self.run_script(js, as_expr=True)
|
||
|
||
def get_local_storage(self, item=None):
|
||
"""获取localStorage信息，不设置item则获取全部 \n
|
||
:param item: 要获取的项目，不设置则返回全部
|
||
:return: localStorage一个或所有项内容
|
||
"""
|
||
js = f'localStorage.getItem("{item}");' if item else 'localStorage;'
|
||
return self.run_script(js, as_expr=True)
|
||
|
||
def set_session_storage(self, item, value):
|
||
"""设置或删除某项sessionStorage信息 \n
|
||
:param item: 要设置的项
|
||
:param value: 项的值，设置为False时，删除该项
|
||
:return: None
|
||
"""
|
||
js = f'sessionStorage.removeItem("{item}");' if item is False else f'sessionStorage.setItem("{item}","{value}");'
|
||
return self.run_script(js, as_expr=True)
|
||
|
||
def set_local_storage(self, item, value):
|
||
"""设置或删除某项localStorage信息 \n
|
||
:param item: 要设置的项
|
||
:param value: 项的值，设置为False时，删除该项
|
||
:return: None
|
||
"""
|
||
js = f'localStorage.removeItem("{item}");' if item is False else f'localStorage.setItem("{item}","{value}");'
|
||
return self.run_script(js, as_expr=True)
|
||
|
||
def clear_cache(self, session_storage=True, local_storage=True, cache=True, cookies=True):
|
||
"""清除缓存，可选要清除的项 \n
|
||
:param session_storage: 是否清除sessionStorage
|
||
:param local_storage: 是否清除localStorage
|
||
:param cache: 是否清除cache
|
||
:param cookies: 是否清除cookies
|
||
:return: None
|
||
"""
|
||
if session_storage:
|
||
self.run_script('sessionStorage.clear();', as_expr=True)
|
||
if local_storage:
|
||
self.run_script('localStorage.clear();', as_expr=True)
|
||
if cache:
|
||
self._wait_driver.Network.clearBrowserCache()
|
||
if cookies:
|
||
self._wait_driver.Network.clearBrowserCookies()
|
||
|
||
def _d_connect(self, to_url, times=0, interval=1, show_errmsg=False, timeout=None):
|
||
"""尝试连接，重试若干次 \n
|
||
:param to_url: 要访问的url
|
||
:param times: 重试次数
|
||
:param interval: 重试间隔（秒）
|
||
:param show_errmsg: 是否抛出异常
|
||
:param timeout: 连接超时时间
|
||
:return: 是否成功，返回None表示不确定
|
||
"""
|
||
err = None
|
||
timeout = timeout if timeout is not None else self.timeouts.page_load
|
||
|
||
for _ in range(times + 1):
|
||
err = None
|
||
result = self._driver.Page.navigate(url=to_url)
|
||
|
||
is_timeout = not self._wait_loading(timeout)
|
||
while self.is_loading:
|
||
sleep(.1)
|
||
|
||
if is_timeout:
|
||
err = TimeoutError('页面连接超时。')
|
||
if 'errorText' in result:
|
||
err = ConnectionError(result['errorText'])
|
||
|
||
if not err:
|
||
break
|
||
|
||
if _ < times:
|
||
sleep(interval)
|
||
while self.ready_state != 'complete':
|
||
sleep(.1)
|
||
if self._debug:
|
||
print('重试')
|
||
if show_errmsg:
|
||
print(f'重试 {to_url}')
|
||
|
||
if err:
|
||
if show_errmsg:
|
||
raise err if err is not None else ConnectionError('连接异常。')
|
||
return False
|
||
|
||
return True
|
||
|
||
|
||
class Timeout(object):
|
||
"""用于保存d模式timeout信息的类"""
|
||
|
||
def __init__(self, page):
|
||
self.page = page
|
||
self.page_load = 30
|
||
self.script = 30
|
||
|
||
@property
|
||
def implicit(self):
|
||
return self.page.timeout
|
||
|
||
|
||
class PageLoadStrategy(object):
|
||
"""用于设置页面加载策略的类"""
|
||
|
||
def __init__(self, page):
|
||
"""
|
||
:param page: ChromiumBase对象
|
||
"""
|
||
self.page = page
|
||
|
||
def __call__(self, value):
|
||
"""设置加载策略 \n
|
||
:param value: 可选 'normal', 'eager', 'none'
|
||
:return: None
|
||
"""
|
||
if value.lower() not in ('normal', 'eager', 'none'):
|
||
raise ValueError("只能选择 'normal', 'eager', 'none'。")
|
||
self.page._page_load_strategy = value
|
||
|
||
def normal(self):
|
||
"""设置页面加载策略为normal"""
|
||
self.page._page_load_strategy = 'normal'
|
||
|
||
def eager(self):
|
||
"""设置页面加载策略为eager"""
|
||
self.page._page_load_strategy = 'eager'
|
||
|
||
def none(self):
|
||
"""设置页面加载策略为none"""
|
||
self.page._page_load_strategy = 'none'
|