def get_all_city_company_count(cls):
"""
获取所有拉勾上的城市 的公司数目
:return: {'city_id': total_company_count, ....}
"""
citys = CityModel.list()
city_company_counts_dict = {}
for city in citys:
headers = generate_http_header()
# proxies = {"https": redis_instance.srandmember(constants.REDIS_PROXY_KEY).decode()}
url = constants.CITY_COMPANY_URL.format(city=city.id,
finance_stage=0,
industry=0)
prams = {
'first': False,
'pn': 1,
'sortField': 1,
'havemark': 0,
}
response = requests.get(url=url,
params=prams,
headers=headers,
timeout=constants.TIMEOUT).json()
city_company_counts_dict[city.id] = int(response['totalCount'])
time.sleep(constants.MIN_SLEEP_TIME)
return city_company_counts_dict
def request_jobs_count_json(city, keyword):
query_string = {'needAddtionalResult': False}
if city != '全国':
query_string['city'] = city
form_data = {
'first': False,
'pn': 1,
'kd': keyword.name
}
headers = generate_http_header(is_crawl_jobs_count=True)
crawler_sleep()
try:
cookies = Cookies.get_random_cookies()
response = requests.post(url=constants.JOB_JSON_URL,
params=query_string,
data=form_data,
headers=headers,
cookies=cookies,
allow_redirects=False,
timeout=constants.TIMEOUT)
response_json = response.json()
if 'content' not in response_json:
Cookies.remove_cookies(cookies)
raise RequestsError(error_log='wrong response content')
except RequestException as e:
logging.error(e)
raise RequestsError(error_log=e)
return response_json
def requests_job_detail_data(job_id):
"""请求职位详情页数据"""
headers = generate_http_header()
crawler_sleep()
try:
response = requests.get(
url=constants.JOB_DETAIL_URL.format(job_id=job_id),
headers=headers,
cookies=Cookies.get_random_cookies(),
allow_redirects=False,
timeout=constants.TIMEOUT)
except RequestException as e:
logging.error(e)
raise RequestsError(error_log=e)
html = etree.HTML(response.text)
department = html.xpath(
'//div[@class="job-name"]/div[@class="company"]/text()')
description = html.xpath('//dd[@class="job_bt"]/div//text()')
keywords = html.xpath(
'//dd[@class="job_request"]//li[@class="labels"]/text()')
return format_tag(department, description, keywords, job_id)
def requests_company_detail_data(company_id):
"""请求公司详情页数据"""
headers = generate_http_header()
crawler_sleep()
try:
response = requests.get(
url=constants.COMPANY_DETAIL_URL.format(company_id=company_id),
headers=headers,
cookies=Cookies.get_random_cookies(),
allow_redirects=False,
timeout=constants.TIMEOUT)
except RequestException as e:
logging.error(e)
raise RequestsError(error_log=e)
html = etree.HTML(response.text)
advantage = html.xpath('//div[@id="tags_container"]//li/text()')
size = html.xpath('//div[@id="basic_container"]//li[3]/span/text()')
address = html.xpath('//p[@class="mlist_li_desc"]/text()')
introduce = html.xpath('//span[@class="company_content"]//text()')
return format_tag(advantage, address, size, introduce, company_id)
def request_job_json(company_id, page_no):
prams = {
'companyId': company_id,
'positionFirstType': u"技术",
'pageNo': page_no,
'pageSize': 10,
}
headers = generate_http_header()
crawler_sleep()
try:
cookies = Cookies.get_random_cookies()
response_json = requests.get(url=constants.COMPANY_JOB_URL,
params=prams,
headers=headers,
cookies=cookies,
timeout=constants.TIMEOUT).json()
if 'content' not in response_json:
Cookies.remove_cookies(cookies)
raise RequestsError(error_log='wrong response content')
except RequestException as e:
logging.error(e)
raise RequestsError(error_log=e)
return response_json
def request_company_json(url, page_no):
prams = {
'first': False,
'pn': page_no,
'sortField': 1,
'havemark': 0,
}
headers = generate_http_header()
crawler_sleep()
try:
cookies = Cookies.get_random_cookies()
response_json = requests.get(url=url,
params=prams,
headers=headers,
cookies=cookies,
allow_redirects=False,
timeout=constants.TIMEOUT).json()
if 'totalCount' not in response_json:
Cookies.remove_cookies(cookies)
raise RequestsError(error_log='wrong response content')
except RequestException as e:
logging.error(e)
raise RequestsError(error_log=e)
return response_json
