markdown解析

demo

1.解析markdown里的所有代码块.
通过创建visitor,收集markdown里的代码片段并分类.

public static void main(String[] args) throws IOException {
    Parser parser = Parser.builder().build();
    try (InputStreamReader reader = new InputStreamReader(new FileInputStream(SRC_MD), StandardCharsets.UTF_8)) {
        Node document = parser.parseReader(reader);
        MyVisitor visitor = new MyVisitor();
        document.accept(visitor);
//            HtmlRenderer renderer = HtmlRenderer.builder().escapeHtml(true).build();
//            System.out.println(renderer.render(document));

        System.out.println(visitor.codeType2Codes);
    }
}

static class MyVisitor extends AbstractVisitor {
    public Map<String, List<String>> codeType2Codes = new HashMap<>();

    public MyVisitor() {

    }

    /**
        * 代码块
        *
        * @param fencedCodeBlock
        */
    @Override
    public void visit(FencedCodeBlock fencedCodeBlock) {
        codeType2Codes.putIfAbsent(fencedCodeBlock.getInfo(), new ArrayList<>());
        codeType2Codes.get(fencedCodeBlock.getInfo()).add(fencedCodeBlock.getLiteral());
        visitChildren(fencedCodeBlock);
    }
}

参考

commonmark-java github