Recently we’ve performed the Yelp business directory scrape for acquiring high quality B2B leads (company + CEO info). This forced us to apply many techniques like proxying, external company site scrape, email verification and more.
Recently we encountered a website that worked as usual, yet when composing and running scraping script/agent it has put up blocking measures.
In this post we’ll take a look at how the scraping process went and the measures we performed to overcome that.
Auth proxy with JAVA
In the post we’ll show how to leverage auth ptoxy (with login/pass) for JAVA application.
How to handle cookie, user-agent, headers when scraping with JAVA? We’ll use for this a static class
ScrapeHelper that easily handles all of this. The class uses Jsoup library methods to fetch from data from server and parse html into DOM document.
Working with a Backconnect proxy service (Oxylab.io) we spent a long time looking for a way to authorize it. Originally we used JSoup to get the web pages’ content. The proxy() method can be used there when setting up the connection, yet it only accepts the host and port, no authentication is possible. One of the options that we found, was the following:
In this post we share with you how to perform web scraping of a JS-rendered website. The tools as seen in the header are JAVA with Selenium library driving headless Chrome instances (download driver) and JSoup as parser to fetch data of the acquired HTML.
In this post we want to share with you a new useful JAVA library that helps to crawl and scrape Linkedin companies. Get business directories scraped!
Simple JAVA email crawler
In this post we share the code of a simple Java email crawler. It crawls emails of a given website, with an infinite crawling depth. A previous post showed us Python simple email crawler.
In this blog post we are going to show how you can solve [Re]captcha with Java and some third party APIs, and why you should probably avoid them in the first place.
For the Python code (+ captcha API) see that post.
The post author is Kevin Sahin from ScrapingNinja.co.
“Completely Automated Public Turing test to tell Computers and Humans Apart” is what captcha stands for. Captchas are used to prevent bots from accessing and performing actions on websites or applications.
The last one is the most used captcha mechanism, Google ReCaptcha v2. That’s why we are going to see how to “break” these captchas.
Creating REST API with Spring
Today we are going to discuss the quite huge and engaging theme – REST API – and make our own web application based on the most popular Java framework – Spring. To start with, we will explain the two main concepts of this article – REST API and Spring. Note, these two concepts are quite complex, and, unfortunately, we can’t fully describe them, but in the article you will find links that will help you cope with moments where you might get stuck.