Pretty Printing HTML String in Java using jsoup

Tags: jsoup HTML Parser

In this post, we are going to use jsoup Java library to pretty print a HTML string.

Add jsoup library to your Java project

To use jsoup Java library in the Gradle build project, add the following dependency into the build.gradle file. 

compile 'org.jsoup:jsoup:1.13.1'

To use jsoup Java library in the Maven build project, add the following dependency into the pom.xml file. 

<dependency>
    <groupId>org.jsoup</groupId>
    <artifactId>jsoup</artifactId>
    <version>1.13.1</version>
</dependency>

To download the jsoup-1.13.1.jar file you can visit jsoup download page at jsoup.org/download

Pretty Printing HTML String in Java

In order to parse a HTML String firstly we need to parse the HTML String into jsoup Document object.

Then we can use different methods to get a pretty printing of the HTML String.

Example 1 using Document.html() method. 

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;

public class PrettyHtmlExample1 {
    public static void main(String... args) {
        String htmlContent = "<!doctype html><html><body><div><h1>Simple Solution</h1></div></body></html>";
        Document document = Jsoup.parse(htmlContent);

        String prettyHtml = document.html();

        System.out.println(prettyHtml);
    }
}
Output: 
<!doctype html>
<html>
 <head></head>
 <body>
  <div>
   <h1>Simple Solution</h1>
  </div>
 </body>
</html>

Example 2 using Document.outerHtml() method. 

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;

public class PrettyHtmlExample2 {
    public static void main(String... args) {
        String htmlContent = "<!doctype html><html><body><div><h1>Simple Solution</h1></div></body></html>";

        Document document = Jsoup.parse(htmlContent);

        String prettyHtml = document.outerHtml();

        System.out.println(prettyHtml);
    }
}
Output: 
<!doctype html>
<html>
 <head></head>
 <body>
  <div>
   <h1>Simple Solution</h1>
  </div>
 </body>
</html>

Example 3 using Document.toString() method. 

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;

public class PrettyHtmlExample3 {
    public static void main(String... args) {
        String htmlContent = "<!doctype html><html><body><div><h1>Simple Solution</h1></div></body></html>";

        Document document = Jsoup.parse(htmlContent);

        String prettyHtml = document.toString();

        System.out.println(prettyHtml);
    }
}
Output: 
<!doctype html>
<html>
 <head></head>
 <body>
  <div>
   <h1>Simple Solution</h1>
  </div>
 </body>
</html>

Happy Coding 😊

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