如何在j2ee中使用换行符替换某些标签并删除其他标签 [英] How to replace some tags and remove others with line break in j2ee

问题描述

主要问题是获取html文件的内容并删除所有标签。

我之前读过这些问题：

The main problem was to get the content of an html file and remove all tags.
I have read theses questions before:

< a href =https://stackoverflow.com/questions/5640334/how-do-i-preserve-line-breaks-when-using-jsoup-to-convert-html-to-plain-text> 1 ， 2 ， 3

阅读所有这些内容后我决定使用 jsoup ，这对我有帮助。我还意识到如何保持换行并用换行符替换< p> 标签。

现在我的问题是我有一个html文件有一个< H1> 标签，其中整个内容的标题可用，我想保留一个换行符但是jsoup第一段恰好在标题之后没有任何换行符。任何人都可以帮助我PLZ？

我的html代码：

after reading all of them I decided to use jsoup and it really helped me. I also realized how to keep line break and replace <p> tags with line break.
now my problem is that I have an html file which has a <H1> tag inside which the title of the whole content is available and I wanna keep it with a line break but with jsoup the fist paragraph comes exactly after the title without any line break. can any one help me plz?
the html code I have :

< DIV class =story-headline >

< H1 class =story-title> NFL 2014预测< / H1> < br>
< / DIV>

< H3 class =story-deck>我们的挑选季后赛球队，惊喜，超级碗< / H3>

< P class =small lighttext>

< SPAN class =delimited>发布日期：2014年9月2日东部时间下午1:30< / SPAN>

< SPAN>最后更新时间：2014年9月4日上午10:27< / SPAN>

< ; / P>

，输出为：

NFL 2014 predictionsOur picks for playoff teams, surprises, Super Bowl

Posted: Sep 02, 2014 1:30 PM ETLast Updated: Sep 04, 2014 10:27 AM ET  

我希望它是：

NFL 2014 predictions  
Our picks for playoff teams, surprises, Super Bowl  
Posted: Sep 02, 2014 1:30 PM ET  
Last Updated: Sep 04, 2014 10:27 AM ET 

推荐答案

您应该挂钩目标文档的 OutputSettings ，请尝试以下操作：

You should hook the OutputSettings of the target Document, so try the following:

public class HtmlWithLineBreaks 
{

  public String getCleanHtml(Document document)
  {
    document.outputSettings(new Document.OutputSettings().prettyPrint(false)); //makes html() call preserve linebreaks and spacing
    return Jsoup.clean(document.html(),
        "",
        Whitelist.none(),
        new Document.OutputSettings().prettyPrint(false));
  }

  public static void main(String... args)
  {
    File input = new File("/path/to/some/input.html"); //Just replace the input with you own html file source
    Document document;
    try
    {
      document = Jsoup.parse(input, "UTF-8");
      String printOut = new HtmlWithLineBreaks().getCleanHtml(document);
      System.out.println(printOut);
    } catch (IOException e)
    {
      e.printStackTrace();
    } 
  }

}

（可选）您可以在< h1> < div> 包装后插入自定义换行符对提供的输出不满意：

Optionally you can insert custom linebreaks after your <h1> <div> wrapper if you are not satisfied with the provided output:

public String getCleanHtml(Document document)
{
  document.outputSettings(new Document.OutputSettings().prettyPrint(false));
  document.select("h1").parents().select("div").append("\n"); // Insert a linebreak after the h1 div parent.
  return Jsoup.clean(document.html(),
      "",
      Whitelist.none(),
      new Document.OutputSettings().prettyPrint(false));
}

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