将HTML转换为Java中的纯文本
发布时间:2020-12-14 18:52:29 所属栏目:资源 来源:网络整理
导读:我需要将 HTML转换为纯文本.我唯一的格式化要求是在纯文本中保留新行.应该显示新的行,不仅在 br但其他标签,例如 tr /, / p为H.也导致了一条新线. 用于测试的HTML页面示例如下:“http://www.particle.kth.se/~lindsey/ JavaCourse/Book/Part1/Java/Chapter09
我需要将
HTML转换为纯文本.我唯一的格式化要求是在纯文本中保留新行.应该显示新的行,不仅在< br>但其他标签,例如< tr />,< / p为H.也导致了一条新线. 用于测试的HTML页面示例如下:“http://www.particle.kth.se/~lindsey/
JavaCourse/Book/Part1/Java/Chapter09/scannerConsole.html”或“http://www.javadb.com/write -to-file-using-bufferedwriter“.请注意,这些只是随机的网址.
我已经尝试了以下线程中提到的将HTML转换为纯文本的各种库(JSoup,Javax.swing,Apache utils). 使用JSoup的示例: public class JSoupTest { @Test public void SimpleParse() { try { Document doc = Jsoup.connect("http://www.particle.kth.se/~lindsey/JavaCourse/Book/Part1/Java/Chapter09/scannerConsole.html").get(); System.out.print(doc.text()); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } HTMLEditorKit示例: import javax.swing.text.html.*; import javax.swing.text.html.parser.*; public class Html2Text extends HTMLEditorKit.ParserCallback { StringBuffer s; public Html2Text() {} public void parse(Reader in) throws IOException { s = new StringBuffer(); ParserDelegator delegator = new ParserDelegator(); // the third parameter is TRUE to ignore charset directive delegator.parse(in,this,Boolean.TRUE); } public void handleText(char[] text,int pos) { s.append(text); } public String getText() { return s.toString(); } public static void main (String[] args) { try { // the HTML to convert URL url = new URL("http://www.javadb.com/write-to-file-using-bufferedwriter"); URLConnection conn = url.openConnection(); BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream())); String inputLine; String finalContents = ""; while ((inputLine = reader.readLine()) != null) { finalContents += "n" + inputLine.replace("<br","n<br"); } BufferedWriter writer = new BufferedWriter(new FileWriter("samples/testHtml.html")); writer.write(finalContents); writer.close(); FileReader in = new FileReader("samples/testHtml.html"); Html2Text parser = new Html2Text(); parser.parse(in); in.close(); System.out.println(parser.getText()); } catch (Exception e) { e.printStackTrace(); } } } 解决方法
让您的解析器将文本内容和换行符附加到StringBuilder.
final StringBuilder sb = new StringBuilder(); HTMLEditorKit.ParserCallback parserCallback = new HTMLEditorKit.ParserCallback() { public boolean readyForNewline; @Override public void handleText(final char[] data,final int pos) { String s = new String(data); sb.append(s.trim()); readyForNewline = true; } @Override public void handleStartTag(final HTML.Tag t,final MutableAttributeSet a,final int pos) { if (readyForNewline && (t == HTML.Tag.DIV || t == HTML.Tag.BR || t == HTML.Tag.P)) { sb.append("n"); readyForNewline = false; } } @Override public void handleSimpleTag(final HTML.Tag t,final int pos) { handleStartTag(t,a,pos); } }; new ParserDelegator().parse(new StringReader(html),parserCallback,false); (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |