5 Ways to Request and Parse Web Data

5 Ways to Request and Parse Web Data

This article details the 5 ways to request and parse data from the internet. The article includes codes to make requesting and parsing data easy to do. Surely you will have a completely different view after reading our article. Let's explore it with us now.

This article details the 5 ways to request and parse data from the internet. The article includes codes to make requesting and parsing data easy to do.

1. HttpURLConnection – Send and Receive Data

HttpURLConnection has been part of Java JDK since version 1.1. It provides methods to send GET/POST requests and receive responses over HTTP protocol. They work with methods in BufferReader and InputStreamReader to read the data. You don’t need any external libraries.  

2. Gson – Map JSON to Objects

The data you receive have different formats, such as plain text, HTML, XML, JSON, pdf, and jpg, etc. How would you like to extract the exact data you want? If it is plain text, you can use the String methods, such as indexOf() to find or use substring() to extract.

XML used to be a popular data transfer format. Today, JSON is preferred for data transfer because it is easy to read and parse. For each JSON data item, you can use libraries such as Jackson or Google Gson to map JSON data items to Java objects for the process.

3. Jsoup – Request and Parse Data in HTML

If the data format is HTML, Jsoup is a good tool because it provides both retrieval and parse. Therefore, Jsoup is the ideal tool for web scraping or web crawling. To set up, you can download Jsoup here. If you use maven, you can add the following in pom.xml.

To use it, you map the page to Jsoup Document. Then you can retrieve the whole page by HTML(). If you want to retrieve some elements on the page, you can specify by using select().

....

tutorial chrome web scraping selenium - web browser automation java (software) jsoup headless chrome json parsing

What is Geek Coin

What is GeekCash, Geek Token

Best Visual Studio Code Themes of 2021

Bootstrap 5 Tutorial - Bootstrap 5 Crash Course for Beginners

Nest.JS Tutorial for Beginners

Hello Vue 3: A First Look at Vue 3 and the Composition API

Browser Automation With Selenium and Java

Browser Automation With Selenium and Java. These statistics emphasize how relevant user experience has become for online businesses. Booking travel tickets, online purchase & payment, filling out applications etc. are done in a single click within fraction of seconds through different websites.

What's the Link Between Web Automation and Web Proxies?

Web automation and web scraping are quite popular among people out there. That’s mainly because people tend to use web scraping and other similar automation technologies to grab information they want from the internet. The internet can be considered as one of the biggest sources of information. If we can use that wisely, we will be able to scrape lots of important facts. However, it is important for us to use appropriate methodologies to get the most out of web scraping. That’s where proxies come into play.

Why Selenium Grid Is Ideal For Automated Browser Testing?

Selenium Grid and Selenium test automation are the ideal choices for performing automated browser testing, find out why in this blog.

How to Install OpenJDK 11 on CentOS 8

What is OpenJDK? OpenJDk or Open Java Development Kit is a free, open-source framework of the Java Platform, Standard Edition (or Java SE).

How To Get Attribute Value In Selenium WebDriver

How To Get Attribute Value In Selenium WebDriver. While you are automating your test cases with Selenium automation, here is how to start implementing Selenium getAttribute() method to get the best results.