This is temporary, some values are static for now.

ExtractMarvelMachine.java

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class Main {
	
	/**
	 * The contents of 'file.txt' can be found here (https://pastebin.com/1hGW3mmM)
	 * @param args
	 */
	public static void main(String[] args) {

		BufferedReader br = null;
		FileReader fr = null;

		try {
			
			fr = new FileReader("C:\\file.txt");
			br = new BufferedReader(fr);
			
			String sLine;

			String sql = "INSERT INTO marvel_prizes (`Item_name`, `ItemID`, `quantity`, `GroupID`, `item_idx`, `image`)";
			while ((sLine = br.readLine()) != null) {
				
				System.out.printf(sql + " VALUES('%s', '1000000', '11', 'A', '%s', '%s'); \r\n", 
						getTitle(sLine), getDataId(sLine), getImage(sLine));
				
			}

		} catch (IOException e) {

			e.printStackTrace();

		} finally {

			try {

				if (br != null)
					br.close();

				if (fr != null)
					fr.close();

			} catch (IOException ex) {

				ex.printStackTrace();

			}

		}

	}
	
	/**
	 * Return the name and extension of the image.
	 * @param sLine
	 * @return
	 */
	public static String getImage(String sLine) {
		int start = sLine.indexOf("items/") + 6;
		int end = sLine.indexOf("')");
		
		return sLine.substring(start, end);
	}

	/**
	 * Return the title of the item.
	 * @param sLine
	 * @return
	 */
	public static String getTitle(String sLine) {
		int start = sLine.indexOf("title=") + 7;
		int end = sLine.indexOf("data") - 2;
		
		String nLine = sLine.substring(start, end);
		
		nLine = nLine.replace("%5b", "[");
		nLine = nLine.replace("%5d", "]");
		
		return nLine;
	}
	
	/**
	 * Return the data-index of the item.
	 * @param sLine
	 * @return
	 */
	public static String getDataId(String sLine) {
		int start = sLine.indexOf("data-idx=") + 10;
		int end = sLine.indexOf("</div>") - 2;
		
		return sLine.substring(start, end);
	}

}