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pixabay.py
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pixabay.py
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#!usr/bin/env python
# -*-coding:utf-8 -*-
__author__='WYY'
__date__='2017.03.17'
#爬虫实战小项目：pixabay图片搜索下载器
import re
import os
import requests
import urllib2
import time
class Spider():
#初始化参数
def __init__(self):
self.keyword=raw_input(u'欢迎使用pixabay 图片搜索下载神器\n请输入搜索关键词(英文)：')
self.siteURL='http://pixabay.com/zh/photos/?image_type=&cat=&min_width=&min_height=&q='+str(self.keyword)+'&order=popular'
#获取详情页源码
def getSource(self,url):
result=requests.get(url).text.encode('utf-8')
return result
#获取图片页数
def getPageNum(self):
result=self.getSource(self.siteURL)
pattern=re.compile('<input name="pagi.*?>.*?/ (.*?) .*?', re.S)
items=re.search(pattern,result)
if items.group(1)>=1:
print u'\n这个主题共有图片', items.group(1), u'页'
else:
print u'\n哎呀，木有您想要的图呢。。。'
return items.group(1)
#匹配正则1
def getItem1(self,url):
result=self.getSource(url)
pattern1=re.compile('<img srcset="https://cdn.pixabay.com/photo(.*?)-(.*?)__340.*?', re.S)
items=re.findall(pattern1, result)
return items
#匹配正则2
def getItem2(self,url):
result=self.getSource(url)
pattern2=re.compile('data-lazy-srcset="https://cdn.pixabay.com/photo(.*?)-(.*?)__340.*?', re.S)
items=re.findall(pattern2,result)
for item in items:
print item
return items
#保存图片入文件
def saveImage(self,detailURL,name):
try:
picture=urllib2.urlopen(detailURL)
fileName=name+'.jpg'
string='F:\Desktop\code\pixabay\%s\%s' % (self.path, fileName)
E=os.path.exists(string)
if not E:
f=open(string, 'wb')
f.write(picture.read())
f.close()
else:
print u'图片已经存在，跳过！'
return False
except (urllib2.HTTPError,urllib2.URLError), e:
print e.reason
return None
#创建目录
def makeDir(self, path):
self.path=path.strip()
E=os.path.exists(os.path.join('F:\Desktop\code\pixabay', self.path))
if not E:
# 创建新目录,若想将内容保存至别的路径（非系统默认），需要更环境变量
# 更改环境变量用os.chdir()
os.makedirs(os.path.join('F:\Desktop\code\pixabay',self.path))
os.chdir(os.path.join('F:\Desktop\code\pixabay',self.path))
print u'成功创建名为', self.path, u'的文件夹'
return self.path
else:
print u'名为', self.path, u'的文件夹已经存在...'
return False
#对一页的操作
def saveOnePage(self,url):
i=1
items=self.getItem1(url)
for item in items:
detailURL='https://cdn.pixabay.com/photo'+str(item[0])+'-'+str(item[1])+ '_960_720.jpg'
print u'\n', u'正在下载并保存图片', i, detailURL
self.saveImage(detailURL, name='Num'+str(i))
time.sleep(0.5)
i+=1
if i>16:
items=self.getItem2(url)
i=17
for item in items:
detailURL = 'https://cdn.pixabay.com/photo'+str(item[0])+'-'+str(item[1])+'_960_720.jpg'
print u'\n', u'正在下载并保存图片', i, detailURL
self.saveImage(detailURL,name='Num'+str(i))
time.sleep(0.5)
i += 1
#对多页图片的操作
def saveMorePage(self):
numbers=self.getPageNum()
Num=int(raw_input(u'一页共100张图，\n请输入要下载的页数(默认页数大于等于1）：'))
Start=int(raw_input(u'请输入下载起始页数：'))
if numbers>=1:
for page in range(Start,Start+Num):
if page==1:
print u'\n',u'正在获取第1页的内容......'
self.url1=self.siteURL
self.makeDir(path=self.keyword + 'page' + str(page))
self.saveOnePage(url=self.url1)
else:
print u'\n',u'正在获取第',page, u'页的内容'
self.url2='https://pixabay.com/zh/photos/?orientation=&image_type=&cat=&colors=&q='+str(self.keyword)+'&order=popular&pagi='+str(page)
self.makeDir(path=self.keyword + 'page' + str(page))
self.saveOnePage(url=self.url2)
else:
return False
print u'\n',u'圆满成功!!!'
spider=Spider()
spider.saveMorePage()