Is it possible to convert HTML into XHTML with Jsoup 1.8.1?

Question

String body = "<br>";
Document document = Jsoup.parseBodyFragment(body);
document.outputSettings().escapeMode(EscapeMode.xhtml);
String str = document.body().html();
System.out.println(str);

expect: <br />

result: <br>

Can Jsoup convert value HTML into XHTML?

Answer 1

See Document.OutputSettings.Syntax.xml :

private String toXHTML( String html ) {
    final Document document = Jsoup.parse(html);
    document.outputSettings().syntax(Document.OutputSettings.Syntax.xml);    
    return document.html();
}

Answer 2

You should tell that syntax you want to leave the string in HTML or XML.

public String parserXHtml(String html) {
        org.jsoup.nodes.Document document = Jsoup.parseBodyFragment(html);
        document.outputSettings().syntax(org.jsoup.nodes.Document.OutputSettings.Syntax.xml); //This will ensure the validity
        document.outputSettings().charset("UTF-8");
        return document.toString();
    }

Answer 3

You can use JTidy API to do this. Use jtidy-r938.jar

You can use the following method to get xhtml from html

public static String getXHTMLFromHTML(String inputFile,
            String outputFile) throws Exception {

        File file = new File(inputFile);
        FileOutputStream fos = null;
        InputStream is = null;
        try {
            fos = new FileOutputStream(outputFile);
            is = new FileInputStream(file);
            Tidy tidy = new Tidy(); 
            tidy.setXHTML(true); 
            tidy.parse(is, fos);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }finally{
            if(fos != null){
                try {
                    fos.close();
                } catch (IOException e) {
                    fos = null;
                }
                fos = null;
            }
            if(is != null){
                try {
                    is.close();
                } catch (IOException e) {
                    is = null;
                }
                is = null;
            }
        }

        return outputFile;
    }