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Today, I did a demo of a downloader that downloads the specified file from the locally configured Apache server. This time, we download the Html.mp4 file under the root directory of the server.By convention, we first create a URL object and a request.Nsurl *url = [Nsurl urlwithstring:@ "http://127.0.0.1/html.mp4"*request = [ Nsurlrequest Requestwithurl:url];Here
There are a lot of VBS downloads, and I'm here a great invention, using Cdo.message to do the VBS downloader. Greatness is the meaning of B.NP first write the code, see here for details: http://hi.baidu.com/vbs_zone/blog/item/f254871382e6d0045aaf5358.htmlLCX found the CDO when he wrote his blog backup script. Message can be accessed by Web downloads, which is said to be a research study that may be used as a download.So I studied for a while. Write a
, how do you write a downloader? Like the previous process, get the URL first, then use the requests module to download, and then save the file. So here's the problem, if we download the file is too large, such as I used to download the file on the Baidu network before, the effect is very good, a thread 100kb/s, open 2
What is a Web page downloader?First, the Web Downloader is the core component of the crawlerSecond, the common Python Web Downloader has urlilib2 basic module and requests third-party plug-in two kindsURLLIB2 Support Features: 1. Support direct URL download; 2. Support for the data entered directly into the Web page; 3. Support for cookie processing that requires
In fact, this HTTP downloader function has been quite perfect, support: speed limit, post delivery and upload, custom HTTP header, set user agent, set range and timeout And it is not only download HTTP, because the use of the stream, so also support other protocols, you can also use it to copy between files, pure TCP download and so on. Full demo Please refer to: Https://github.com/waruqi/tbox/wiki Stream.c * */////////////////////////////////
Previously wrote a python implementation of the Baidu new song list, hot song List Downloader blog, to achieve the Baidu new song, popular songs Crawl and download. However, the use of a single-threaded, network conditions in general, the first 100 songs to scan the time to get about 40 seconds. and using the PYQT interface, in the process of downloading the window operation, there will be UI blocking phenomenon.The first two days have time to adjust
= Urllib.request.urlopen (req). Read () Try data = Data.decode (' Utf-8 ') Except data = Data.decode (' GBK ', ' ignore ') Return data #获取验证码图片 Def getcodeimg (): Urlcode= ' http://csdn.juming.com/code.htm ' Image_bytes = Urlopen (Urlcode). Read () # Internal Data file Data_stream = io. Bytesio (Image_bytes) # Open as a PIL image object Pil_image = Image.open (Data_stream) Tk_image = Imagetk.photoimage (pil_image) Return Tk_image #构建界面 def Creategui
Recently in the crawler, sometimes crawling down a lot of interesting file connections.If you download them manually, the workload is too great.So, simply wrote a download small script:ImportOS, Urllib2os.chdir (R'D:') URL='http://image16-c.poco.cn/mypoco/myphoto/20140826/09/5295255820140826091556057_640.jpg'Print 'Downloading'Data=urllib2.urlopen (URL). Read ()Print 'Saving'F= Open ('girl.jpg','WB') f.write (data)Print 'Finish'f.close ()You can then
pointer-type variable that points to the content including the base address and length of its own imageExtent: = Pimageoptionalheader (Pointer (Integer (hmodule) + Pimagedosheader (hmodule). _lfanew + sizeof (DWORD) + sizeof ( Timagefileheader)). Sizeofimage;Get the length of the memory imageVirtualFreeEx (ProcessHandle, hmodule, 0, mem_release);Allocate a sufficient length of memory within the memory range of the EXP processHmodule_news: = VirtualAllocEx (ProcessHandle, hmodule, Extent, Mem_co
This article mainly shares the custom downloader and request information, implements the custom request content, and stores the custom content.* * Warm tip: If you want to reprint this article, please indicate the source of the content. **This article connects: http://www.cnblogs.com/grom/p/8968905.htmlNext, in the original project based on the transformation, for the Entityspider set downloader.Custom Downloader
Web Downloader: Download the Web page URL on the Internet to a local toolStore URL pages in the Internet via the Web downloader to a local or memory stringWhat kinds of Web downloader do python have?1.urllib2 Python official Base module2.requests Python third-party package is more powerfulUrllib2 download Page Method 1: The most concise methodURL-----------------
Symptom : The throughput of the system is expected to be smaller, and the request object in the downloader sometimes looks more than concurrent_requests. Example : We use a 0.25-second download delay to mimic the download of 1000 pages, the default concurrency level is 16, according to the previous formula, it takes about 19s of time. We use Crawler.engine.download () in a pipeline to initiate an additional HTTP request to a bogus API, and the respons
Application The downloader built into Microsoft Updater Application Block v2.0 is a download file with BITS technology. BITS is the Background intelligent Transfer Service abbreviation. BITS is a new, very useful file transfer feature in Windows that downloads files asynchronously from a remote server via HTTP. BITS can specialize in the use of idle bandwidth to
a pointer-type variable that points to the content including the base address and length of its own imageExtent: = Pimageoptionalheader (Pointer (Integer (hmodule) + Pimagedosheader (hmodule). _lfanew + sizeof (DWORD) + sizeof ( Timagefileheader)). Sizeofimage;Get the length of the memory imageVirtualFreeEx (ProcessHandle, hmodule, 0, mem_release);Allocate a sufficient length of memory within the memory range of the EXP processHmodule_news: = VirtualAllocEx (ProcessHandle, hmodule, Extent, Mem_
://m.blog.csdn.net/blog/oWuGuanFengYue123?page= This page is the article page, when this number is large, larger than the article page, take a limit, 99999,http:// m.blog.csdn.net/blog/owuguanfengyue123?page=999999, it shows all the articles.(4) The acquisition of the article list and the analysis of the article contentThe page obtained in (3), through regular expression, parse out all the article title and URL, and then through this URL to get HTML source code, due to the use of itext, the form
Share a Python-implemented Bing picture downloader. Download the homepage image and save it to the current directory. The regular library re and the request library are used. The approximate process is as follows: 1, Request fetch first page data 2, re regular match home picture URL3, again use request download picture data Source:#--*--encoding:utf-8--*--"""bingloader.pyDownload Bing.com Home Image"""ImportReImportSysImportOsImportRequest
The code is as follows: #! /usr/bin/python2.7#--Coding:utf-8-- Import OS, urllib,urllib2, thread,threadingImport re #匹配音乐urlReg=re.compile (' {' Name ': ' (. +?) '. +?" RawUrl ":" (. +?) ",. +?} ', Re. I) Class Downloader (threading. Thread):def __init__ (self, URL, name):Threading. Thread.__init__ (self)Self.url=urlSelf.name=name def run (self):print ' Downloading from%s '% Self.urlUrllib.urlretrieve (Self.url, Self.name) Threads=[] #多线程下载文件d
narcissism meaningful. Master the scientific method of learning, rain or shine, have the courage and perseverance, believe that they "I can do it", the real "from a crazy downloader into a learner", then you will also be ambitious. Remember there is a story to teach the "borrower said" (I remember as if the name), the book can not be read also, and so rich to buy a lot of books, Han Niu filling, but not to read! Full of hard drives, but not a few are
How to Use the custom function of the universal map downloader of water diversion to download the map of Zhejiang Tiandi Go to http://www.zjditu.cn/and select the region map, as shown in. If you are using IE, select "F12 Developer Tools" (similar to the developer tool menu is available in other browsers), as shown in. Click "enable network traffic capture (F5)", as shown in. Enlarge the satellite map to see the URL address of the currently disp
"Flash" button under the tab to start the download.Note: For additional instructions on "Device name" in step 3:For a more convenient view of the supported "Device name", you can click "GDB pemicro Interface Debugging" in the window that pops up in step 2, and a download configuration will appear underneath it. Then click on the download configuration, select the "Debugger" tab in the right window, and you will see a "Device name" item, and the difference is that it is shown directly to the use
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