def __init__(self, settings=None, install_root_handler=True):
super(CrawlerProcess, self).__init__(settings)
# 安装shutdown处理机
install_shutdown_handlers(self._signal_shutdown)
# 配置日志
configure_logging(self.settings, install_root_handler)
log_scrapy_info(self.settings)
def __init__(self, settings=None, install_root_handler=True):
## 父类初始化
super(CrawlerProcess, self).__init__(settings)
## 处理 shutdown 信号
install_shutdown_handlers(self._signal_shutdown)
## 为 Scrapy 配置默认的日志服务
configure_logging(self.settings, install_root_handler)
## 输出 scrapy 的相关信息（启动状态，版本...）
log_scrapy_info(self.settings)
def __init__(self, settings=None, install_root_handler=True):
logging.info("CrawlerProcess __init__")
super().__init__(settings)
logging.info("super().__init__(settings)")
install_shutdown_handlers(self._signal_shutdown)
logging.info("install_shutdown_handlers(self._signal_shutdown)")
configure_logging(self.settings, install_root_handler)
logging.info("configure_logging(self.settings, install_root_handler)")
log_scrapy_info(self.settings)
logging.info("log_scrapy_info(self.settings)")
def __init__(self, in_thread, settings=None, install_root_handler=True):
# call grandparent init method
# avoid calling CrawlerProcess init method which install shutdown_handlers
if in_thread:
super(CrawlerProcess, self).__init__(settings)
configure_logging(self.settings, install_root_handler)
log_scrapy_info(self.settings)
else:
super(PyScraperCrawlerProcess,
self).__init__(settings, install_root_handler)
def _run_spider_in_reactor(spider_cls,
capture_items=True,
return_crawler=False,
settings=None,
**kwargs):
"""Runs given spider inside the twisted reactdor.
Parameters
----------
spider_cls : scrapy.Spider
Spider to run.
capture_items : bool (default: True)
If enabled, the scraped items are captured and returned.
return_crawler : bool (default: False)
If enabled, the crawler instance is returned. If ``capture_items`` is
enabled, the scraped items is collected in ``crawler.items``.
settings : dict, optional
Custom crawler settings.
Returns
-------
out : crochet.EventualResult
If ``capture_items`` is ``True``, returns scraped items. If
``return_crawler`` is ``True``, returns the crawler instance.
"""
settings = settings or {}
crawler_settings = get_project_settings().copy()
crawler_settings.setdict(default_settings)
crawler_settings.setdict(settings)
log_scrapy_info(crawler_settings)
crawler = Crawler(spider_cls, crawler_settings)
d = crawler.crawl(**kwargs)
if capture_items:
crawler.items = _OutputItems()
crawler.signals.connect(crawler.items.append,
signal=signals.item_scraped)
d.addCallback(lambda _: crawler.items)
if return_crawler:
d.addCallback(lambda _: crawler)
return d
def _run_spider_in_reactor(spider_cls, capture_items=True, return_crawler=False,
settings=None):
"""Runs given spider inside the twisted reactdor.
Parameters
----------
spider_cls : scrapy.Spider
Spider to run.
capture_items : bool (default: True)
If enabled, the scraped items are captured and returned.
return_crawler : bool (default: False)
If enabled, the crawler instance is returned. If ``capture_items`` is
enabled, the scraped items is collected in ``crawler.items``.
settings : dict, optional
Custom crawler settings.
Returns
-------
out : crochet.EventualResult
If ``return_items`` is ``True``, returns scraped items. If
``return_crawler`` is ``True``, returns the crawler instance.
"""
settings = settings or {}
crawler_settings = get_project_settings().copy()
crawler_settings.setdict(settings)
log_scrapy_info(crawler_settings)
crawler = Crawler(spider_cls, crawler_settings)
d = crawler.crawl()
if capture_items:
crawler.items = _OutputItems()
crawler.signals.connect(crawler.items.append, signal=signals.item_scraped)
d.addCallback(lambda _: crawler.items)
if return_crawler:
d.addCallback(lambda _: crawler)
return d
def __init__(self, settings=None, install_root_handler=True):
super().__init__(settings)
configure_logging(self.settings, install_root_handler)
log_scrapy_info(self.settings)
self._initialized_reactor = False
def __init__(self, settings=None):
super(CrawlerProcess, self).__init__(settings)
install_shutdown_handlers(self._signal_shutdown)
configure_logging(self.settings)
log_scrapy_info(self.settings)
def __init__(self, settings=None, install_root_handler=False):
crawler.CrawlerRunner.__init__(self, settings)
install_shutdown_handlers(self._signal_shutdown)
configure_logging(self.settings, install_root_handler=install_root_handler)
log_scrapy_info(self.settings)
def __init__(self, settings=None):
super(CrawlerProcess, self).__init__(settings)
install_shutdown_handlers(self._signal_shutdown)
configure_logging(self.settings)
log_scrapy_info(self.settings)
def __init__(self, settings=None, install_root_handler=True):
super().__init__(settings)
install_shutdown_handlers(self._signal_shutdown)
configure_logging(self.settings, install_root_handler)
log_scrapy_info(self.settings)
def __init__(self, settings=None):
super(CustomCrawler, self).__init__(settings)
configure_logging(self.settings)
log_scrapy_info(self.settings)
pdb.set_trace()
def __init__(self, settings=None, install_root_handler=True):
print("sssssssssssssssssssssssssssssssssssssssssss")
super(CrawlerProcess, self).__init__(settings)
install_shutdown_handlers(self._signal_shutdown)
configure_logging(self.settings, install_root_handler)
log_scrapy_info(self.settings)
def __init__(self, settings=None, install_root_handler=True):
super(CrawlerProcess, self).__init__(settings)
install_shutdown_handlers(
self._signal_shutdown) # 监控键盘按键，然后发送signal.signal(相关指令)进行控制
configure_logging(self.settings, install_root_handler)
log_scrapy_info(self.settings)
