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How to convert HTML to a 2D array
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[愿得一人]
[愿得一人] 2020-12-10 09:10


Lets say I copy a complete HTML table (when each and every tr and td has extra attributes) into a String. How can I take all the contents (w

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  • 日久生厌
    2020-12-10 09:54

    Maybe String.split('<whateverhtmltabletag>') can help you?

    Also StringTokenizer class can be useful. Example:

    String data = "one<br>two<br>three";  
StringTokenizer tokens = new StringTokenizer(data, "<br>");  
while (tokens.hasMoreElements()) {  
   System.out.println(tokens.nextElement());  // prints one, then two, then three
}

    Also, using indexOf("<tag"), example here: http://forums.devshed.com/java-help-9/parse-html-table-into-2d-arrays-680614.html

    You can also use an HTML parser (like jsoup) and then copy the contents from the table to an array. Here's an example in javascript: JavaScript to parse HTML table of numbers into an array

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  • 野性不改
    2020-12-10 10:06

    Nevermind, I saw this code in the internet: HtmlTableParser

    It actually seems that now I have another problem, but it is not exactly related to this question, so I will open another one.

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  • 傲寒
    2020-12-10 10:09

    This is how it could be done using JSoup (srsly, don't use regexp for HTML).

    Document doc = Jsoup.parse(html);
Elements tables = doc.select("table");
for (Element table : tables) {
    Elements trs = table.select("tr");
    String[][] trtd = new String[trs.size()][];
    for (int i = 0; i < trs.size(); i++) {
        Elements tds = trs.get(i).select("td");
        trtd[i] = new String[tds.size()];
        for (int j = 0; j < tds.size(); j++) {
            trtd[i][j] = tds.get(j).text(); 
        }
    }
    // trtd now contains the desired array for this table
}

    Also, the class attribute value is not closed properly here in your example:

    <td class="bold>Td2</td>

    it should be

    <td class="bold">Td2</td>
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  • 说谎
    2020-12-10 10:09

    what i have so far, it is not the best one, but I hope it's helpful... simple with string

    public void read_data() {
    try {
        file = new File("_result.xml");
        FileReader fileReader = new FileReader(file);
        BufferedReader bufferedReader = new BufferedReader(fileReader);
        String line = "";
        String output = "";
        int a = 0, b = 0;
        boolean _write = false;

        while ((line = bufferedReader.readLine()) != null) {
            if(line.trim().startsWith("<td")) { _write = true; } else { _write = false; }

            if(_write) {
                a = line.indexOf('>')+1;
                b = line.lastIndexOf('<');
                output += line.substring(a,b) + "|";
            }

            if(line.trim().equals("</tr>")) {
                System.out.println(output);
                output = "";
            }

        }
        fileReader.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
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