orbit downloader

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

= 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 (msg= "): Global Root root = Tk. Tk () Root.t

several times, you can complete, such as only download the last failed image. The demo is similar to Google Map and other maps. I used the actual project to download from the Google Map of these tiles, imitating the Google map display principle to do a map display module. ：Figure 4 Demo Main interfaceFigure 5 Download completed tilesFigure 6 tiling tiles into a large pictureSource: Http://files.cnblogs.com/xiaozhi_5638/GoogleMapDownLoader.rarVS2010 Win7 Debugging pass, hope to have hel

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 are two points to note, first, the URL of the string is all in English, if the string appe

more meaningful to remember something carefully than to be self-intoxicated during the download process.I have mastered scientific learning methods, and have the courage and perseverance. I believe that I can do what I do. I can truly turn my real "from a crazy Downloader to a learner ", then you will be ambitious. Opinion 1:Materials are actually useless to people. If we do not learn and apply them to reality, we will produce benefits. Let's ta

("scripting. FileSystemObject ") Set file = FSO. opentextfile (ARG (0) ". htm", 2, true) File. Write bin2str (SS) File. Close Set FSO = nothing Ado. Close Set ABO = nothing Function bin2str (re) For I = 1 to lenb (re) Bt = ASCB (midb (Re, I, 1 )) If BT Bin2str = bin2str hex (BT) Next End Function ==============================================Downloader down. vbs==================Copy codeThe Code is as follows: on error resume nextSet Arg = wscript

, then the level will increase the number of words. There is no free lunch in the world, and this sentence is a good one. When we were complacent about downloading a few g and dozens of G free English documents, when we keep searching for more information, we have lost the most valuable thing, that is, time, that is, life. How many times can we beat in our life? If we waste an hour, we will lose one in our lives. It would have been a waste of time for us to do a lot of meaningless things in our

XML downloader by cooldiyer // XML. cpp: By cooldiyer 2008/4/9 14:03//# Pragma comment (linker, "/subsystem: Windows/filealign: 0 × 200/OPT: nowin98") # Include # Include # Import "MSXML. dll"Bool urldownloadtofile (maid, maid){MSXML: ixmlhttprequestptr XMLHTTP = NULL;Hresult hr;BSTR bstrstring = NULL;HR = XMLHTTP. createinstance ("msxml2.xmlhttp");If (! Succeeded (HR) return false;HR = XMLHTTP-> open ("get", szurl, false );If (! Succeeded (HR) return

components (need to manually find downloaded xx[1].htm): Copy Code code as follows: Window.moveto 4000,4000 Window.resizeto 0,0 ' makes an HTA invisible Set xml=document.createelement ("xml") ' Build-side XML element invokes IE's default behavior Xml.addbehavior ("#default #download") Xml.async=0 Xml.load ("http://192.168.0.10/xx.htm") ' Window.close Vii. Shortcomings My HTA downloader is not perfect. The first is

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 consider joining multi-threaded download supp

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

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 20 threads, you can reach the 2m/s, very useful, but encountered a problem is that the file is too large, if the data, Now download and

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 * */////////////////////////////////

Web page | Download one. Objective: Microsoft's. NET Framework provides the following two namespaces for our network programming: System.Net and System.Net.Sockets. By using the classes and methods reasonably, we can easily write a variety of Web applications. This type of network application can be based either on a stream socket or on a datagram socket. The most widely used protocol based on stream sockets is the TCP protocol, and the most widely used communication based on datagram sockets i

Do you often read online comics on the Internet? When the internet is not good, half a day can not brush a picture to have wood! In fact, we can through some online comic download tools to download the comics down slowly look! But now the whole wide variety of comic download which good? Today's small series for you to introduce a swallow world comic download, And how to download online comics through it. >> Swallow World Comics Download link Swallow World Comics

Own Java-made CSDN blog downloader, provide jar package and source code.Source code is also open, anyway jar anti-compilation can also get the source code, novice will not jar encryption.Resources CSDN in the audit bar ... It's slow.Considering the class time to see the blog inconvenient, want to put all the good blog download down, on the phone to see.A variety of Baidu, found a few tools.1.http://blog.csdn.net/gzshun/article/details/7555525The great

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

Copy Code code 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) Thread

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 handle multiple download tasks for multiple users. Although BITS is not limited to automa