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How to use rotating ISP proxy to crawl Amazon product information
by Sun
2024-01-19

As one of the world's largest e-commerce platforms, Amazon has a massive amount of product information and various price changes. It is very important for consumers to keep abreast of product price changes, and using Java to capture Amazon price information can help us achieve this goal. 


This article will introduce how to use Java to crawl Amazon price information, and attach a code tutorial.


1. Why rotating ISP proxy is suitable for data capture business


Improve stability: By rotating different ISP proxies, the stability problems of a single ISP proxy can be avoided. If an ISP proxy fails or the network is unstable, you can switch to another ISP proxy in time to ensure the continuity and stability of data capture.


Improve speed: Different ISP proxies may have different network bandwidth and stability. By rotating different ISP proxies, you can choose a faster and more responsive proxy, thereby improving the efficiency and speed of data capture.


Cover a wider area: Different ISP proxies may cover different regions. By rotating different ISP proxies, data capture can be achieved on a global scale, thereby obtaining more comprehensive data information.


Diversified data sources: Using different ISP proxies can simulate data access in different regions and different network environments, thereby obtaining diversified data sources and making the captured data more comprehensive and accurate.


2. Preparation work


Before starting, we need to prepare the following work:


Java development environment: First, make sure that the Java development environment has been installed on your computer. You can confirm by entering "java -version" on the command line.


IDE: It is recommended to use IntelliJ IDEA as a development tool.


Maven: used to manage the dependencies of Java projects.


Jsoup: A Java HTML parser used to process web page content.


3. Obtain the Amazon product page link


First, we need to get the link to the product page where we want to capture price information. You can get it by searching for the product on Amazon's website and then copying the product link.


4. Create a Maven project


Open IntelliJ IDEA and click "Create New Project".


Select "Maven" on the left, select "Create from archetype" on the right and select "maven-archetype-quickstart".


Enter the project name in ArtifactId and click "Next".


Click "Finish" to complete the project creation.


5. Add Jsoup dependency


Add the Jsoup dependency in the pom.xml file:


org.jsoup

jsoup

1.13.1


6. Write code


First, create an AmazonPrice class to store the price information of the product.


public class AmazonPrice {

Private String title; // Product title

Private String price; // Product price


Public AmazonPrice(String title, String price) {

This.title = title;

This.price = price;

}


// getters and setters

}



Create an AmazonPriceCrawler class to capture product price information.


public class AmazonPriceCrawler {


// Method to capture product price information, the parameter is the product link

Public static AmazonPrice getPrice(String url) throws IOException {

//Use Jsoup to connect to the product page and obtain the page content

Document doc = Jsoup.connect(url).get();


            // Get product title

String title = doc.select("#productTitle").text().trim();


//Get product price

String price = doc.select("#priceblock_ourprice").text();


            // Return the AmazonPrice object

         return new AmazonPrice(title, price);

}

}


7. Test code


Create a Main class in the src/main/java directory to test the code.


public class Main {

Public static void main(String[] args) throws IOException {

//Call the getPrice method and pass in the product link

AmazonPrice price = AmazonPriceCrawler.getPrice("https://www.amazon.com/dp/B07YLD4HJ7");


//Print product title and price information

System.out.println("Title: " + price.getTitle());

System.out.println("Price: " + price.getPrice());

}

}



8. Run the code


Click the "Run" button in the upper right corner of IntelliJ IDEA to run the code. Product title and price information will be output in the console.


9. Improve the code


In order to make the code more robust, you can add some exception handling. For example, when the product link is invalid or the page structure changes, the program can run correctly.


Summarize


Through the introduction of this article, we can see that using Java to capture Amazon price information is not complicated. You only need to prepare the development environment and related tools, and write simple code to achieve it. 


By capturing price information, we can keep abreast of product price changes, helping us make more informed consumption decisions. At the same time, this also shows us Java's powerful ability in data capture.



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