在Java中轻松将HTML格式文本转换为纯文本的方法示例(保留换行)

<dependency>
	<groupId>org.jsoup</groupId>
	<artifactId>jsoup</artifactId>
	<version>1.11.3</version>
</dependency>
<dependency>
	<groupId>commons-lang</groupId>
	<artifactId>commons-lang</artifactId>
	<version>2.6</version>
</dependency>
<dependency>
	<groupId>org.apache.commons</groupId>
	<artifactId>commons-lang3</artifactId>
	<version>3.4</version>
</dependency>

import org.apache.commons.lang.StringEscapeUtils;
import org.apache.commons.lang3.StringUtils;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.safety.Whitelist;

/**
 * @author Piconjo
 */
public class Html2PlainText {
  public static String convert(String html)
  {
    if (StringUtils.isEmpty(html))
    {
      return "";
    }

    Document document = Jsoup.parse(html);
    Document.OutputSettings outputSettings = new Document.OutputSettings().prettyPrint(false);
    document.outputSettings(outputSettings);
    document.select("br").append("\\n");
    document.select("p").prepend("\\n");
    document.select("p").append("\\n");
    String newHtml = document.html().replaceAll("\\\\n", "\n");
    String plainText = Jsoup.clean(newHtml, "", Whitelist.none(), outputSettings);
    String result = StringEscapeUtils.unescapeHtml(plainText.trim());
    return result;
  }
}