使用谷歌自定义搜索API下载图像

Question

我在python中使用google image api下载20个第一个图像结果,代码如下:

import os
import sys
import time
from urllib import FancyURLopener
import urllib2
import simplejson



searchTerm = "Cat"

# Replace spaces ' ' in search term for '%20' in order to comply with request
searchTerm = searchTerm.replace(' ','%20')



# Start FancyURLopener with defined version 
class MyOpener(FancyURLopener): 
    version = 'Mozilla/5.0 (Windows; U; Windows NT 5.1; it; rv:1.8.1.11) Gecko/20071127 Firefox/2.0.0.11'
myopener = MyOpener()

# Set count to 0
count=0

for i in range(0,4):
    # Notice that the start changes for each iteration in order to request a new set of images for each loop
  url = ('https://ajax.googleapis.com/ajax/services/search/images?'+'v=1.0&q='+searchTerm7+'&start='+str(i*4)+'&userip=MyIP&imgsz=xlarge|xxlarge|huge')
  print url
  request = urllib2.Request(url, None, {'Referer': 'testing'})
  response = urllib2.urlopen(request)

    # Get results using JSON
  results = simplejson.load(response)
  data = results['responseData']
  dataInfo = data['results']

    # Iterate for each result and get unescaped url
  for myUrl in dataInfo:
    count = count + 1
    print myUrl['unescapedUrl']
    os.chdir(newpath)
    myopener.retrieve(myUrl['unescapedUrl'],str(num)+'-'+str(count))

    # Sleep for one second to prevent IP blocking from Google
    time.sleep(3)

但现在我想使用谷歌自定义搜索来做到这一点,以获得更好的结果.我知道我应该注册以获得APIKey但我没有找到任何简单的例子作为我发布的代码.有人可以帮助,我真的迷失在谷歌文档中.

显然有限制免费api,每天100个请求,这是正确的吗？

编辑:我现在在这里,但仍然没有工作

import os
import sys
import time
from urllib import FancyURLopener
import urllib2
import simplejson
import cStringIO
import pprint


searchTerm="Cat"

# Start FancyURLopener with defined version 
class MyOpener(FancyURLopener): 
    version = 'Mozilla/5.0 (Windows; U; Windows NT 5.1; it; rv:1.8.1.11) Gecko/20071127 Firefox/2.0.0.11'
myopener = MyOpener()


url='https://www.googleapis.com/customsearch/v1?key=API_KEY&cx=017576662512468239146:omuauf_lfve'+'&q='+searchTerm+'&searchType=image'+'&start=0'+'&imgSize=xlarge|xxlarge|huge'
print url
request = urllib2.Request(url, None, {'Referer': 'testing'})
response = urllib2.urlopen(request)

    # Get results using JSON

data = json.load(response)
pprint.PrettyPrinter(indent=4).pprint(data['items'][0]) 

Answer 1

您可以将此Google API客户端库用于Python.

演示:

这是一个示例(我将其更改为):

from apiclient.discovery import build

service = build("customsearch", "v1",
               developerKey="** your developer key **")

res = service.cse().list(
    q='butterfly',
    cx=' ** your cx **',
    searchType='image',
    num=3,
    imgType='clipart',
    fileType='png',
    safe= 'off'
).execute()

if not 'items' in res:
    print 'No result !!\nres is: {}'.format(res)
else:
    for item in res['items']:
        print('{}:\n\t{}'.format(item['title'], item['link']))

输出:

Clipart - Butterfly:
        http://openclipart.org/image/800px/svg_to_png/3965/jonata_Butterfly.png
Animal, Butterfly, Insect, Nature - Free image - 158831:
        http://pixabay.com/static/uploads/photo/2013/07/13/11/51/animal-158831_640.png
Clipart - Monarch Butterfly:
        http://openclipart.org/image/800px/svg_to_png/110023/Monarch_Butterfly_by_Merlin2525.png

是的,版本有限制Free,您可以从Google开发者控制台进行监控:

注意:

转到自定义搜索引擎,然后选择自定义搜索引擎,然后在" 基本"选项卡中,将Image search选项设置为ON,对于Sites to search部分,选择Search the entire web but emphasize included site选项.

链接:

• https://google-api-client-libraries.appspot.com/documentation/customsearch/v1/python/latest/customsearch_v1.cse.html
• https://developers.google.com/custom-search/json-api/v1/reference/cse/list
• https://www.google.com/cse/all
• https://developers.google.com/api-client-library/python/apis/customsearch/v1
• https://console.developers.google.com/project
• https://developers.google.com/api-client-library/python/start/get_started
• https://developers.google.com/api-client-library/python/guide/aaa_apikeys