protocol demo about cache

1_7.http_proxy_server/python/testCode/cacheUtil.py

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+#!/usr/bin/env python
+# coding=utf-8
+import urllib
+import urllib2
+class CacheUtils:
+
+    def cbk(a, b, c):  
+        '''''回调函数 
+        @a: 已经下载的数据块 
+        @b: 数据块的大小 
+        @c: 远程文件的大小 
+        '''  
+        per = 100.0 * a * b / c  
+        if per > 100:  
+            per = 100  
+        print '%.2f%%' % per  
+
+    def download(self, url, local):
+        urllib.urlretrieve(url, local, cbk)
+
+    def cache(self, url):
+        fileName = url.split('/')[-1]
+        req = urllib2.Request(url)
+        #req.add_header('Range', 'bytes=0-7000')
+        response = urllib2.urlopen(req)
+        buffer = response.read()
+        with open("./cache/img.png", "a+") as fp:
+            fp.write(buffer)
+
+        

1_7.http_proxy_server/python/testCode/py.txt

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+test1test2test3test4test5test6test7test8test9test1
+test2
+test3
+test4
+test5
+test6
+test7
+test8
+test9
+test1test2test3test4test5test6test7test8test9

1_7.http_proxy_server/python/testCode/testFileIO.py

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+#!/usr/bin/env python
+# coding=utf-8
+"""
+#fileIO read & print
+with open("py.txt") as fp:
+    #data = fp.read()
+    data = fp.readline()
+    print(data)
+"""
+
+
+"""
+#fileIO foreach write
+with open("py.txt", 'a+') as fp:
+    for num in range(1,10):
+        #fp.write("test" + str(num) + "\n" )
+        fp.writelines("test" + str(num))
+"""
+
+
+with open("py.txt", 'a+') as fp:
+    for line in fp.readlines():
+        line = line.strip()     #去除首尾空白
+        print(line)

1_7.http_proxy_server/python/testCode/testUrllib.py

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+#!/usr/bin/env python
+# coding=utf-8
+import urllib
+import urllib2
+import os
+def cbk(a, b, c):  
+    '''''回调函数 
+    @a: 已经下载的数据块 
+    @b: 数据块的大小 
+    @c: 远程文件的大小 
+    '''  
+    per = 100.0 * a * b / c  
+    if per > 100:  
+        per = 100  
+    print '%.2f%%' % per  
+
+""" urllib下载  
+url = 'http://www.sina.com.cn'  
+#local = '/home/rh/my_code/OpenWrt_Luci_Lua/1_7.http_proxy_server/python/testCode/sina.html'  
+#local = '/home/rh/my_code/OpenWrt_Luci_Lua/1_7.http_proxy_server/python/testCode/test.html' 
+#local = './cache/backup'  
+
+fileName = url.split('/')[-1]
+local = os.path.join('./cache',fileName)
+
+urllib.urlretrieve(url, local, cbk)
+
+"""
+
+#url = "http://download.meizu.com/Firmware/Flyme/m1_note/4.2/cmcc/20150507154711/61746475/update.zip"
+url = "https://ss0.bdstatic.com/5aV1bjqh_Q23odCf/static/superplus/img/logo_white_ee663702.png"
+req = urllib2.Request(url)
+req.add_header('Range', 'bytes=0-7000')
+response = urllib2.urlopen(req)
+buffer = response.read()
+with open("./cache/test1.png", "a+") as fp:
+    fp.write(buffer)
+
+
+req = urllib2.Request(url)
+req.add_header('Range', 'bytes=7001-14175')
+response = urllib2.urlopen(req)
+buffer = response.read()
+with open("./cache/test2.png", "a+") as fp:
+    fp.write(buffer)
+
+
+
+
+
+
+
+""" urllib2下载 request失败
+url = 'http://www.sina.com.cn'
+req = urllib2.Request(url)
+#req.add_header('range','byte:1-100')
+response = urllib2.urlopen(req)
+file = response.read()
+
+with open("urllib2test.html", "a+") as fp:
+   fp.write(file) 
+"""
+"""urlopener 失败"""
+url = 'http://www.sina.com.cn'
+opener = urllib2.build_opener()  
+#不加头信息则出现403错误和乱码  
+opener.addheaders = [('User-agent', 'Mozilla/5.0')];
+#opener.addheaders = [('range', 'byte:1-100')]
+htmlAll = opener.open( url ).read()  
+reg1Floor = '<div class="msgfont">(.*?)</div>'  
+#文件保存编码和文件编辑编码都是utf-8，所以decode一次，不然会出现乱码，但是不影响结果。  
+#htmlAll.decode('utf-8') 
+print(htmlAll)
+ 
+

1_7.http_proxy_server/python/testCode/url2.py

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+#!/usr/bin/env python
+# coding=utf-8
+import urllib2
+#url = "http://download.meizu.com/Firmware/Flyme/m1_note/4.2/cmcc/20150507154711/61746475/update.zip"
+url = "https://ss0.bdstatic.com/5aV1bjqh_Q23odCf/static/superplus/img/logo_white_ee663702.png"
+
+#url = "http://www.sina.com.cn"
+req = urllib2.Request(url)
+req.add_header('Range', 'bytes=7001-14000')
+response = urllib2.urlopen(req)
+#print(response.info())
+
+html = response.read()
+with open("test4.png", "a+") as fp:
+    fp.write(html)
+#print html