open source web crawler c#

There are a lot of open-source web crawlers, and there will be a lot of crawlers on SourceForge, but few have C. Today we recommend two web crawlers developed by C #. Http://www.codeproject.com/KB/IP/Crawler.aspx written by forei

http://blog.csdn.net/pleasecallmewhy/article/details/8932310 Qa: 1. Why a period of time to show that the encyclopedia is not available. A : some time ago because of the scandal encyclopedia added header test, resulting in the inability to crawl, need to simulate header in code. Now the code has been modified to work properly. 2. Why you need to create a separate thread. A: The basic process is this: the crawler in the background of a new thread, h

Project content: A web crawler in the Encyclopedia of embarrassing things written in Python. How to use: Create a new bug.py file, and then copy the code into it, and then double-click to run it. Program function: Browse the embarrassing encyclopedia in the command prompt line. Principle Explanation: First, take a look at the home page of the embarrassing encyclopedia: HTTP://WWW.QIUSHIBAIKE.COM/HOT/

Hello, everyone! From today onwards, I will use a few pages of text to introduce my open source work--yaycrawler, its Web site on GitHub is: Https://github.com/liushuishang/YayCrawler, welcome to the attention and feedback.Yaycrawler is a distributed generic crawler framework based on WebMagic development, and Java is

drag them into the form designer, and then simply set their properties to correlate with each other:1.BPlaceBox Property settings2.BMapControl Property settings3.BPlacesBoard Property settings4.BDirectionBoard Property settingsYou can then press F5 to run it without writing any code.Note that the Btabcontrol control is just to mimic the tab effect on the left side of Baidu Map, which organizes Bplacesboard and Bdirectionboard controls.Reference Help1. Baidu Map API documentation2.json.net3.Json

SeeC + + Development Forum System-BBSOf course you can also go directly: fetch_source_code_release_vse2008_v1.2.1.7zAt present, the first temporary presence of Baidu Cloud, will be put into GitHub recentlyThe current version of the code is developed using standard C + + on Windows, using Visual C + + Express 2008 compilationIf you have problems can join QQ Group: 117399430-----------------------------------

"Go" is based on C #. NET high-end intelligent web Crawler 2The story of the cause of Ctrip's travel network, a technical manager, Hao said the heroic threat to pass his ultra-high IQ, perfect crush crawler developers, as an amateur crawler development enthusiasts, such stat

processing for pipeline use. Its API is similar to map, and it is worth noting that it has a field of skip, and if set to true, it should not be pipeline processed.The engine that controls the crawler's Operation--spiderSpiders are at the heart of webmagic internal processes. Downloader, Pageprocessor, Scheduler, and pipeline are all properties of the spider, which are freely set and can be implemented by setting this property. Spider is also the entrance of WebMagic operation, it encapsulates

The following is all the code of the crawler, completely, thoroughly open, you will not write the program can be used, but please install a Linux system, with the public network conditions, and then run: Python startcrawler.pyIt is necessary to remind you that the database field code, please build your own form, this is too easy, not to say more. At the same time I also provide a download address, the

Document directory 1. url splicing (urlutils. Java) 2. encoding of the webpage source code 3. Miscellaneous Recently, I want to write a small crawler framework. Unfortunately, zero has no experience in writing a framework. Therefore, it is necessary to find an existing framework for reference. Google found that the crawler is the best reference for the fra

;Import java.net.HttpURLConnection;Import Java.net.URL;public class Webpagesource {public static void Main (String args[]) {URL url;int responsecode;HttpURLConnection URLConnection;BufferedReader reader;String Line;try{generate a URL object, to get the source code of the Web page address is:http://www.sina.com.cnUrl=new URL ("http://www.sina.com.cn");Open URLURLC

source framework. Spend a half month time frame basically complete, can solve processing data processing work, crawler, ETL, quantitative transactions. and has very good performance. You are welcome to use and advise. Project Address: Github.com/kkyon/databot Installation method: PIP3 install-u Databot Code Case: Github.com/kkyon/databot/tree/master/examplesMulti-threaded VS asynchronous co-process: In gen

Turn from: Network, Original source Unknown Heritrix Heritrix is an open source, scalable web crawler project. Heritrix is designed to strictly follow the instructions for robots.txt documents and meta-robots tags. Websphinx Ebsphinx is an interactive development environment

The functionality of the scrapy. Third, data processing flowScrapy 's entire data processing process is controlled by the scrapy engine, which operates mainly in the following ways:The engine opens a domain name, when the spider handles the domain name and lets the spider get the first crawl URL. The engine gets the first URL to crawl from the spider , and then dispatches it as a request in the schedule. The engine gets the page that crawls next from the dispatch.The schedule returns the next

# Ndcms-Ndcms is a content management system written in C # that features a User Manager, file manager, a WYSIWYG editor and built-in HTTP compression (for those who are not running at least IIS 6 and/or don't have access to modify your IIS settings directly and/or those who Don 'T want to spend a small fortune on a third party HTTP compressor ). the goal of ndcms is to provide a quick and easy way to deploy. net website while saving you time and mon

assembly, extraction of work. Then I personally feel that there is no perfect thing, flexible may need more code, and attrbibute+ model of the inflexible is not useless, at least I use down 70%-80% can cope, not to mention on attribute can also configure a variety of formatter, Of course, it is related to the structure of most of the objects I crawl. Let's get a little bit of the chapter behind it. HTTP Header, cookie settings, post usage Parsing of JSON data Configuration-base

in bulk, these tasks will be executed on the worker, and the worker will refer to the parsing rules set by the user when parsing.Iv. OtherThe communication between Master, worker and admin is based on HTTP protocol, in order to secure, the communication process uses token, timestamp, nonce to sign and verify the message body, only the signature is correct to communicate successfully.The queue and persistence in the framework are all based on the interface programming, you can easily replace the

something.Html Agility packhttp://htmlagilitypack.codeplex.com/The Html Agility Pack is an open source project on CodePlex. It provides standard DOM APIs and XPath navigation-even if HTML is not in the proper format! HTML Agility Pack with Scrapysharp, completely remove the pain of HTML parsing.ncrawlerhttp://ncrawler.codeplex.com/Ncrawler is a foreign open

First, install the ScrapyImporting GPG keyssudo apt-key adv--keyserver hkp://keyserver.ubuntu.com:80--recv 627220E7Add a software sourceEcho ' Deb Http://archive.scrapy.org/ubuntu scrapy main ' | sudo tee/etc/apt/sources.list.d/scrapy.listUpdate the package list and install Scrapysudo apt-get update sudo apt-get install scrapy-0.22Ii. Composition of ScrapyThree, fast start scrapyAfter you run scrapy, you only need to rewrite a download.Here is someone else's example of crawling job site informa

Suppose you want to download the entire site content reptile, I do not want to configure Heritrix complex reptile, to choose Webcollector. Project GitHub a constantly updated.GitHub Source Address: Https://github.com/CrawlScript/WebCollectorgithub:http://crawlscript.github.io/webcollector/Execution mode:1. Unzip the compressed package downloaded from the http://crawlscript.github.io/WebCollector/page.2. After decompression find webcollector-version-b