pictures_search.py
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import os
import sys
import faiss
import numpy as np
import pandas as pd
os.environ["PYARROW_IGNORE_TIMEZONE"] = "1"
sys.path.append(os.path.dirname(sys.path[0])) # 上级目录
from utils.templates_mysql import TemplatesMysql
from vgg_model import VGGNet
from curl_cffi import requests, Curl
import requests as requests2
import random
from lxml import etree
import traceback
import os
import re
class PicturesSearch(object):
def __init__(self, site_name='us', search_key='asin', search_value='B0BBNQCXZL', top_k=100):
self.site_name = site_name
self.search_key = search_key
self.search_value = search_value
self.top_k = top_k
self.index_path = rf"/mnt/data/img_data/index/knn.index"
self.my_index = self.load_index()
self.vgg_model = VGGNet()
self.query_vector = np.array
# self.engine = TemplatesMysql().engine
self.engine_pg = TemplatesMysql().engine_pg
# self.server_ip = "192.168.200.210"
self.server_ip = "113.100.143.162:8000"
def xpath_imgurl(self, resp):
print(2222222222222222222)
img_url_list = ["//div[@id='imgTagWrapperId']/img/@src", '//div[@id="img-canvas"]/img/@src',
'//div[@id="imgTagWrapperId"]/img/@src', '//div[@id="img-canvas"]/img/@src',
'//div[@class="image-wrapper"]/img/@src', '//div[@id="mainImageContainer"]/img/@src',
'//img[@id="js-masrw-main-image"]/@src', '//div[@id="a2s-dp-main-content"]//img/@src',
'//div[@id="ppd-left"]//img/@src',
'//div[@id="ebooks-img-canvas"]//img[@class="a-dynamic-image frontImage"]/@src',
'//div[@id="ppd-left"]//img/@src', '//div[@class="a-column a-span12 a-text-center"]/img/@src',
'//img[0]/@src', '//img[@id="seriesImageBlock"]/@src', '//img[@class="main-image"]/@src',
'//img[@class="mainImage"]/@src', '//img[@id="gc-standard-design-image"]/@src',
'//div[@class="a-row a-spacing-medium"]//img[1]/@src',
'//div[@class="a-image-container a-dynamic-image-container greyBackground"]/img/@src']
response_s = etree.HTML(resp)
for i in img_url_list:
image = response_s.xpath(i)
if image:
image_url = image[0]
break
else:
image_url = None
return image_url
def downlad_img(self, asin, site='us'):
for i in range(6):
try:
if site == 'us':
asin_url = f'https://www.amazon.com/dp/{asin}'
if site == "us":
asin_url = f'https://www.amazon.com/dp/{asin}'
elif site == 'uk':
asin_url = f'https://www.amazon.co.uk/dp/{asin}' # 站点url
elif site == 'de':
asin_url = f'https://www.amazon.de/dp/{asin}'
elif site == 'fr':
asin_url = f'https://www.amazon.fr/dp/{asin}'
elif site == 'es':
asin_url = f'https://www.amazon.es/dp/{asin}'
elif site == 'it':
asin_url = f'https://www.amazon.it/dp/{asin}'
headers = {
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7',
'Accept-Encoding': 'gzip, deflate, br', 'Accept-Language': 'zh-CN,zh;q=0.9',
'Cache-Control': 'no-cache',
'Pragma': 'no-cache',
'Sec-Ch-Ua-Mobile': '?0', 'Sec-Ch-Ua-Platform': '"Windows"',
'Sec-Ch-Ua-Platform-Version': '"10.0.0"',
'Sec-Fetch-Dest': 'document', 'Sec-Fetch-Mode': 'navigate', 'Sec-Fetch-Site': 'none',
'Sec-Fetch-User': '?1',
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36',
'Viewport-Width': '1920'}
session = requests.Session()
print('asin_url::', asin_url)
random_num = random.randint(1, 2)
if random_num == 1:
resp = session.get(asin_url, headers=headers, timeout=10, verify=False,
impersonate="chrome110") # 获取网页
else:
resp = requests2.get(asin_url, headers=headers, timeout=10, verify=False)
image_url = self.xpath_imgurl(resp.text)
if image_url:
str_ = re.findall(r'\._(.*)\.jpg', image_url)[0]
_url = image_url.replace('._' + str_, '')
print('获取图片url:', _url)
resp_img = session.get(_url, headers=headers, timeout=10, verify=False,
impersonate="chrome110") # 获取网页
asin_upper = asin.upper()
path_1 = fr"/mnt/data/img_data/tmp_img/"
if os.path.exists(path_1) == False: # 判断路径是否存在
os.makedirs(path_1)
with open(rf"{path_1}{asin_upper}.jpg",
'wb') as f: # 打开写入到path路径里-二进制文件，返回的句柄名为f
f.write(resp_img.content) # 往f里写入r对象的二进制文件
return {"state": "ok"}
except Exception as e:
print(e, f"\n{traceback.format_exc()}")
return {'state': 'error'}
def download_img(self, asin, site='us'):
for i in range(5):
try:
if site == 'us':
asin_url = f'https://www.amazon.com/dp/{asin}'
if site == "us":
asin_url = f'https://www.amazon.com/dp/{asin}'
elif site == 'uk':
asin_url = f'https://www.amazon.co.uk/dp/{asin}' # 站点url
elif site == 'de':
asin_url = f'https://www.amazon.de/dp/{asin}'
elif site == 'fr':
asin_url = f'https://www.amazon.fr/dp/{asin}'
elif site == 'es':
asin_url = f'https://www.amazon.es/dp/{asin}'
elif site == 'it':
asin_url = f'https://www.amazon.it/dp/{asin}'
headers = {
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7',
'Accept-Encoding': 'gzip, deflate, br', 'Accept-Language': 'zh-CN,zh;q=0.9',
'Cache-Control': 'no-cache',
'Pragma': 'no-cache',
'Sec-Ch-Ua-Mobile': '?0', 'Sec-Ch-Ua-Platform': '"Windows"',
'Sec-Ch-Ua-Platform-Version': '"10.0.0"',
'Sec-Fetch-Dest': 'document', 'Sec-Fetch-Mode': 'navigate', 'Sec-Fetch-Site': 'none',
'Sec-Fetch-User': '?1',
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36',
'Viewport-Width': '1920'}
curl = Curl(cacert="/path/to/your/cert")
session = requests.Session(curl=curl)
print('asin_url::', asin_url)
resp = session.get(asin_url, headers=headers, timeout=10, verify=False, impersonate="chrome110") # 获取网页
image_url = self.xpath_imgurl(resp.text)
if image_url:
str_ = re.findall(r'\._(.*)\.jpg', image_url)[0]
_url = image_url.replace('._' + str_, '')
print('获取图片url:', _url)
resp_img = session.get(_url, headers=headers, timeout=10, verify=False,
impersonate="chrome110") # 获取网页
asin_upper = asin.upper()
path_1 = fr"/mnt/data/img_data/tmp_img/"
if os.path.exists(path_1) == False: # 判断路径是否存在
os.makedirs(path_1)
asin_path = rf"{path_1}{asin_upper}.jpg"
with open(asin_path, 'wb') as f: # 打开写入到path路径里-二进制文件，返回的句柄名为f
f.write(resp_img.content) # 往f里写入r对象的二进制文件
query_vec = self.vgg_model.vgg_extract_feat(file=asin_path, file_type='bytes')
return query_vec
except Exception as e:
print(e, f"\n{traceback.format_exc()}")
# return query_vec
def load_index(self):
my_index = faiss.read_index(self.index_path)
print("加载索引完成, type(my_index):", type(my_index))
return my_index
def get_features(self, search_key, search_value, file):
print("search_key, search_value, file:", search_key, search_value, file)
if search_key == 'asin':
return self.get_asin_features(search_value)
elif search_key == 'file':
return self.vgg_model.vgg_extract_feat(file=file, file_type='bytes')
else:
print("不符合的查询方式,仅支持asin和图片file两种方式")
def get_asin_features(self, search_value):
sql = f"select * from {self.site_name}_pictures_features where asin='{search_value}'"
print("sql:", sql)
df = pd.read_sql(sql, con=self.engine_pg)
if df.shape[0] == 0:
query_vector = self.download_img(search_value)
# df = pd.read_sql(sql, con=self.engine)
else:
query_vector = eval(list(df.features)[0])
# print("query_vector:", query_vector[:10])
return query_vector
def get_asin_by_index(self, site_name, indices_list):
sql = f"select distinct(asin) as asin from {site_name}_pictures_id_index where indice in {tuple(indices_list)}"
print("sql:", sql)
df = pd.read_sql(sql=sql, con=self.engine_pg)
asin_list = list(df.asin)
return asin_list
def calculate_similarity(self, site_name, indices_list, query_vector):
# sql = f"select asin, features from {site_name}_pictures_features where asin in {tuple(asin_list)}"
# sql = f"""
# select asin, features from {site_name}_pictures_features main
# left join (select distinct(asin) as asin from {site_name}_pictures_id_index where index in {tuple(indices_list)}) a
# on main.asin=a.asin
# """
sql = f"""
SELECT main.asin, a.features FROM
(select asin from {site_name}_pictures_id_index where index in {indices_list}) main
inner join {site_name}_pictures_features a
on main.asin=a.asin
"""
df = pd.read_sql(sql, con=self.engine_pg)
df = df.drop_duplicates(['asin'])
all_vecs_dict = {asin: eval(features) for asin, features in zip(df.asin, df.features)}
# query_vector = query_vector.T
similarities = self.cosine_similarity_matrix(query_vec=query_vector, all_vecs=list(all_vecs_dict.values()))
# print(similarities)
similarities_dict = {asin: (similarity, f"http://{self.server_ip}/images/{site_name}/{asin[:1]}/{asin[:2]}/{asin[:3]}/{asin[:4]}/{asin[:5]}/{asin[:6]}/{asin}.jpg") for similarity, asin in zip(similarities, df.asin)}
# print(similarities_dict)
# for asin in asin_list:
# print(asin, similarities_dict[asin])
# asin_similarities = {search_value: similarities_dict}
# print("asin_similarities:", asin_similarities)
return similarities_dict
def cosine_similarity_matrix(self, query_vec, all_vecs):
# 计算相似度
query_vec_norm = np.linalg.norm(query_vec)
all_vecs_norm = np.linalg.norm(all_vecs, axis=1)
print(query_vec_norm.shape)
print(all_vecs_norm.shape)
dot_products = np.dot(all_vecs, query_vec)
similarities = dot_products / (query_vec_norm * all_vecs_norm)
# 将相似度转换为百分比
similarities_percentage = similarities * 100
# 保留所需的小数位数，例如保留两位小数
similarities_percentage = np.round(similarities_percentage, 2)
return similarities_percentage
def search_api(self, site_name, search_key, search_value, top_k, file):
# 获取向量
query_vector = self.get_features(search_key, search_value, file)
self.query_vector = np.array(query_vector)
self.query_vector = self.query_vector.reshape(1, -1)
distances, indices = self.my_index.search(self.query_vector, top_k)
indices_list = tuple(indices.tolist()[0])
# print("indices.tolist():", indices.tolist())
# print("len(indices.tolist()):", len(indices.tolist()))
# distances_list = distances.tolist()
# print("indices_list:", type(indices_list), len(indices_list), indices_list)
# print("distances_list:", type(distances_list), len(distances_list), distances_list)
# asin_list = self.get_asin_by_index(site_name=site_name, indices_list=indices_list[0])
# asin_path_list = self.get_asin_path_by_asin(site_name=site_name, asin_list=asin_list)
# print("asin_list:", asin_list[:10])
# print("asin_path_list:", asin_path_list)
# 计算相似度
similarities_dict = self.calculate_similarity(site_name, indices_list, query_vector=query_vector)
# print("similarities_dict:", similarities_dict)
# return indices_list, distances_list, asin_list, similarities_dict
return similarities_dict
# print("type(indices), type(distances):", type(indices), type(distances))
# print("indices:", indices[:20])
# print(f"Top {self.top_k} elements in the dataset for max inner product search:")
# for i, (dist, indice) in enumerate(zip(distances[0], indices[0])):
# print(f"{i + 1}: Vector number {indice:4} with distance {dist}")
def search(self):
self.query_vector = np.array(self.query_vector)
self.query_vector = self.query_vector.reshape(1, -1)
distances, indices = self.my_index.search(self.query_vector, self.top_k)
print("type(indices), type(distances):", type(indices), type(distances))
print("indices:", indices[:20])
print(f"Top {self.top_k} elements in the dataset for max inner product search:")
for i, (dist, indice) in enumerate(zip(distances[0], indices[0])):
print(f"{i + 1}: Vector number {indice:4} with distance {dist}")
def run(self):
self.search()
if __name__ == '__main__':
site_name = sys.argv[1] # 参数1：站点
search_key = sys.argv[2] # 参数2：查询类型
search_value = sys.argv[3] # 参数3：查询值
top_k = int(sys.argv[4]) # 参数4：最相似的top前k个值
handle_obj = PicturesSearch(site_name=site_name, search_key=search_key, search_value=search_value, top_k=top_k)
handle_obj.run()