中华人民共和国农业农村部 http://www.moa.gov.cn/
- 点击数据 → 点击周度数据 → 跳转网页 http://zdscxx.moa.gov.cn:8080/nyb/pc/frequency.jsp
分析
-
抓包，发现getFrequencyData里面有我们想要的数据
-
查看请求的提交参数
-
使用postman接口测试工具测试验证getFrequencyData里的url，发现测试返回的数据列表是空的
- 继续分析，发现需要先访问updateFrequencyConditions，再访问getFrequencyData
爬取
python
import requests
import uuid
import time- 爬取第一页的数据
python
url1 = 'http://zdscxx.moa.gov.cn:8080/nyb/updateFrequencyConditions'
url2 = 'http://zdscxx.moa.gov.cn:8080/nyb/getFrequencyData'
data = {
'page':'1',
'rows':'20',
'type':'周度数据',
'subType':'农产品批发价格',
'level':'0',
'time':'["2019-37","2023-38"]',
'product':'蔬菜'
}
headers = {
'Cookie':'JSESSIONID=9EDB9C447A01905C7893BDE4C220CF65; yfx_c_g_u_id_10002896=_ck23091319002016340778405571397; yfx_f_l_v_t_10002896=f_t_1694602820630__r_t_1694602820630__v_t_1694602820630__r_c_0; _trs_uv=lmhmrkth_299_3qsk; wdcid=5dbb601a9ccf2804; wdses=369f04c5d15e94ad; _va_ref=%5B%22%22%2C%22%22%2C1694602920%2C%22http%3A%2F%2Fzdscxx.moa.gov.cn%3A8080%2F%22%5D; _va_ses=*; _va_id=34f0e583bc02483c.1694602920.1.1694602960.1694602920.; wdlast=1694603152',
'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36 Edg/116.0.1938.76',
'Host':'zdscxx.moa.gov.cn:8080',
'Origin':'http://zdscxx.moa.gov.cn:8080',
'Referer':'http://zdscxx.moa.gov.cn:8080/nyb/pc/frequency.jsp',
'X-Requested-With':'XMLHttpRequest'
}
s = requests.session() # <requests.sessions.Session at 0x24b202c27f0>
r1 = s.post(url1,data=data,headers=headers) # <Response [200]>
r2 = s.post(url2,data=data,headers=headers) # <Response [200]>
content = r2.json() # 得到json数据
data_list = content['result']['pageInfo']['table']
for item in data_list:
v_data = {}
v_data['时间'] = item['time']
v_data['品类'] = item['product']
v_data['指标'] = item['item']
v_data['地区'] = item['area']
v_data['单位'] = item['unit']
v_data['数值'] = item['value']
print(v_data)- 爬取所有页面的数据，只需要修改data里面的page
python
for page in range(1,11): # 一共10页
url1 = 'http://zdscxx.moa.gov.cn:8080/nyb/updateFrequencyConditions'
url2 = 'http://zdscxx.moa.gov.cn:8080/nyb/getFrequencyData'
data = {
'page':page,
'rows':'20',
'type':'周度数据',
'subType':'农产品批发价格',
'level':'0',
'time':'["2019-37","2023-38"]',
'product':'蔬菜'
}
headers = {
'Cookie':'JSESSIONID=9EDB9C447A01905C7893BDE4C220CF65; yfx_c_g_u_id_10002896=_ck23091319002016340778405571397; yfx_f_l_v_t_10002896=f_t_1694602820630__r_t_1694602820630__v_t_1694602820630__r_c_0; _trs_uv=lmhmrkth_299_3qsk; wdcid=5dbb601a9ccf2804; wdses=369f04c5d15e94ad; _va_ref=%5B%22%22%2C%22%22%2C1694602920%2C%22http%3A%2F%2Fzdscxx.moa.gov.cn%3A8080%2F%22%5D; _va_ses=*; _va_id=34f0e583bc02483c.1694602920.1.1694602960.1694602920.; wdlast=1694603152',
'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36 Edg/116.0.1938.76',
'Host':'zdscxx.moa.gov.cn:8080',
'Origin':'http://zdscxx.moa.gov.cn:8080',
'Referer':'http://zdscxx.moa.gov.cn:8080/nyb/pc/frequency.jsp',
'X-Requested-With':'XMLHttpRequest'
}
s = requests.session() # <requests.sessions.Session at 0x24b202c27f0>
r1 = s.post(url1,data=data,headers=headers) # <Response [200]>
r2 = s.post(url2,data=data,headers=headers) # <Response [200]>
content = r2.json() # 得到json数据
data_list = content['result']['pageInfo']['table']
for item in data_list:
v_data = {}
v_data['时间'] = item['time']
v_data['品类'] = item['product']
v_data['指标'] = item['item']
v_data['地区'] = item['area']
v_data['单位'] = item['unit']
v_data['数值'] = item['value']
print(v_data)
time.sleep(5)