Article Introduction：Scrapy is a powerful web crawler framework written in Python, which can help users quickly and efficiently crawl the information they need from the Internet. However, in the process of using Scrapy to crawl, you often encounter some problems, such as crawling failure, incomplete data or slow crawling speed. These problems will affect the efficiency and stability of the crawler. Therefore, this article will explore how Scrapy improves crawling stability and crawling efficiency. Set request headers and User-Agent when crawling the web,

2023-06-23 comment 0  1897

Article Introduction：In the process of crawling, we often encounter anti-crawling mechanisms, which requires us to use some tools and techniques to bypass these obstacles. Among them, regular expressions are a very important tool, which can help us perform data matching and processing in crawlers. Below, we will introduce how to use Python regular expressions for crawling and anti-crawling. Understanding regular expressions Regular expressions are a tool used to describe text patterns. They can describe specific patterns of target strings through some specific symbols and words. In Python

2023-06-23 comment 0  647

Article Introduction：Scrapy in action: Crawling Baidu news data With the development of the Internet, the main way people obtain information has shifted from traditional media to the Internet, and people increasingly rely on the Internet to obtain news information. For researchers or analysts, a large amount of data is needed for analysis and research. Therefore, this article will introduce how to use Scrapy to crawl Baidu news data. Scrapy is an open source Python crawler framework that can crawl website data quickly and efficiently. Scrapy provides powerful web page parsing and crawling functions

2023-06-23 comment 0  1811

Article Introduction：Scrapy crawler in action: crawling Maoyan movie ranking data. With the development of the Internet, data crawling has become an important part of the big data era. In the process of data crawling, crawler technology can be used to automatically obtain the data needed at the moment, process and analyze it. In recent years, Python has become one of the most popular programming languages. Among them, Scrapy is a powerful crawler framework based on Python. It has a wide range of applications and has attracted everyone's attention especially in the field of data crawling. This article is based on S

2023-06-22 comment 0  2268

Article Introduction：Ultra-Detailed Tutorial: Crawling GitHub Repository Folders Without API This ultra-detailed tutorial, authored by Shpetim Haxhiu, walks you through crawling GitHub repository folders programmatically without relying on the GitHub API. It includ

2024-12-16 comment 0  1018

Article Introduction：JavaScript script crawlers are one of the most common crawling methods on the Internet. By executing JavaScript scripts, crawlers can automatically crawl, process and store data on the target website. This article will introduce the principles, steps, and some practical techniques and tools of JavaScript script crawlers. 1. Principle of JavaScript script crawler Before introducing the principle of JavaScript script crawler, let’s first understand JavaScript. JavaScript is a scripting language,

2023-05-09 comment 0  1375

Article Introduction：This article mainly introduces the problem and solution of Node.js crawling garbled Chinese web pages. This article explains the use of some open source libraries to solve the garbled problem that occurs during crawling. Friends in need can refer to the following

2016-05-16 comment 0  1881

Article Introduction：Web scraping with PyCharm requires the following steps: Create a project and install the PySpider crawler framework. Create a crawler script, specify crawling frequency and extraction link rules. Run PySpider and check the crawl results.

2024-04-25 comment 0  1322

Article Introduction：PHP and phpSpider: How to deal with performance issues in large-scale data crawling? With the development of the Internet and the popularity of data, more and more companies and individuals have begun to pay attention to data crawling to obtain the required information. In large-scale data crawling tasks, performance is an important consideration. This article will introduce how to use PHP and phpSpider to deal with the performance issues of large-scale data crawling, and illustrate it through code examples. 1. Use multi-threading. When crawling large-scale data, using multi-threading can significantly improve the operation of the program.

2023-07-21 comment 0  1535

Article Introduction：How to use Scrapy to crawl JD merchants’ product data Scrapy is a powerful Python web crawler framework that allows us to easily and conveniently write code to crawl web page data. This article will introduce how to use Scrapy to crawl JD merchants’ product data. Preparation Before we start writing code, we need to make some preparations. 1. Install Scrapy We need to install Scrapy locally. If you have not installed Scrapy yet, you can enter the following in the command line

2023-06-23 comment 0  1774

Article Introduction：In recent years, with the rapid development of the game industry, many gamers have begun to pay attention to game data. As for the game "StarCraft 2" (hereinafter referred to as SC2), its rich game data is undoubtedly a major feature that attracts many players. In order to better understand the game situation, many players want to use programming skills to obtain game data. This article will introduce how to use the PHP programming language to implement the process of crawling SC2 game data. Crawl a web page Before we start crawling SC2 game data, we need to first understand how to crawl a web page. exist

2023-06-13 comment 0  1393

Article Introduction：When crawling websites with Scrapy you'll quickly come across all sorts of scenarios that require you to get creative or interact with the page that you're trying to scrape. One of these scenarios is when you need to crawl an infinite scroll page. Th

2024-08-10 comment 0  1435

Article Introduction：Bilibili is a popular barrage video website in China. It is also a treasure trove, containing all kinds of data. Among them, barrage data is a very valuable resource, so many data analysts and researchers hope to obtain this data. In this article, I will introduce the use of PHP language to crawl Bilibili barrage data. Preparation work Before starting to crawl barrage data, we need to install a PHP crawler framework Symphony2. You can enter through the following command

2023-06-13 comment 0  2039

Article Introduction：How does node crawl data? The following article will share with you an example of a node crawler and talk about how to use node to crawl novel chapters. I hope it will be helpful to everyone!

2022-05-02 comment 0  3796

Article Introduction：How to crawl using Node.js? The following article will talk about using Node.js to develop a simple image crawling function. I hope it will be helpful to you!

2022-06-30 comment 0  2610

Article Introduction：In today's information technology era, crawling massive amounts of data has become an important skill. With the rapid development of big data technology, data crawling technology is constantly being updated and improved. Among them, the Scrapy framework is undoubtedly the most commonly used and popular framework. It has unique advantages and flexibility in data crawling and processing. This article will introduce how to use the Scrapy framework to crawl the Flickr image library. Flickr is a picture sharing website with hundreds of millions of pictures in its inventory and a very large amount of data resources. by Sc

2023-06-22 comment 0  800

Article Introduction：How to use PHP and phpSpider to complete data crawling with form interaction? Introduction: Data crawling plays a very important role in today's Internet era. Data crawling technology can be used to quickly obtain a large amount of data on the Internet, and this data can be processed, analyzed, and applied. phpSpider is a powerful PHP open source crawler tool that can help us crawl data quickly and flexibly. This article will introduce how to use PHP and phpSpider to complete data crawling with form interaction.

2023-07-21 comment 0  1262

Article Introduction：With the development of the Internet, the amount of information on the Internet is increasing, and people need to crawl information from different websites to perform various analyzes and mining. Scrapy is a fully functional Python crawler framework that can automatically crawl website data and output it in a structured form. Kugou Music is one of the most popular online music platforms. Below I will introduce how to use Scrapy to crawl the song information of Kugou Music. 1. Install ScrapyScrapy is a framework based on the Python language, so

2023-06-22 comment 0  2757

Article Introduction：The methods for PHP to crawl web pages are: 1. file() function; 2. file_get_contents() function; 3. fopen()->fread()->fclose mode; 4. curl method; 5. fsockopen() function.

2021-09-02 comment 0  6073

Article Introduction：Through the above example of crawling the capital flow of individual stocks, you should have been able to learn to write your own crawling code. Now consolidate it and do a similar small exercise. You need to write your own Python program to crawl the fund flow of online sectors. The crawled URL is http://data.eastmoney.com/bkzj/hy.html, and the display interface is shown in Figure 1. Figure 1 Sector Fund Flow Website Interface 1. To search for JS, press the F12 key directly to open the development and debugging tool and search for the web page corresponding to the data, as shown in Figure 2. Figure 2 Find the web page corresponding to JS and enter the URL into the browser. The URL is relatively long.

2023-04-13 comment 0  1827