简单地执行JSoup .parse(html).text()有两个潜在的问题(对于JSoup 1.7.3):

它从文本中删除换行符 它转换文本&lt;脚本&gt;>到<脚本

如果您使用它来防止XSS，这有点烦人。下面是我在一个改进的解决方案中最好的尝试，使用JSoup和Apache StringEscapeUtils:

// breaks multi-level of escaping, preventing &amp;lt;script&amp;gt; to be rendered as <script>
String replace = input.replace("&amp;", "");
// decode any encoded html, preventing &lt;script&gt; to be rendered as <script>
String html = StringEscapeUtils.unescapeHtml(replace);
// remove all html tags, but maintain line breaks
String clean = Jsoup.clean(html, "", Whitelist.none(), new Document.OutputSettings().prettyPrint(false));
// decode html again to convert character entities back into text
return StringEscapeUtils.unescapeHtml(clean);

注意，最后一步是因为我需要将输出作为纯文本使用。如果您只需要HTML输出，那么您应该能够删除它。

下面是一堆测试用例(从输入到输出):

{"regular string", "regular string"},
{"<a href=\"link\">A link</a>", "A link"},
{"<script src=\"http://evil.url.com\"/>", ""},
{"&lt;script&gt;", ""},
{"&amp;lt;script&amp;gt;", "lt;scriptgt;"}, // best effort
{"\" ' > < \n \\ é å à ü and & preserved", "\" ' > < \n \\ é å à ü and & preserved"}

如果你有办法让它变得更好，请告诉我。

接受的答案并不适用于我所指出的测试用例:“a < b or b > c”的结果是“a b or b > c”。

所以，我用TagSoup代替。下面是一个对我的测试用例(以及其他一些测试用例)有效的示例:

import java.io.IOException;
import java.io.StringReader;
import java.util.logging.Logger;

import org.ccil.cowan.tagsoup.Parser;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.InputSource;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;

/**
 * Take HTML and give back the text part while dropping the HTML tags.
 *
 * There is some risk that using TagSoup means we'll permute non-HTML text.
 * However, it seems to work the best so far in test cases.
 *
 * @author dan
 * @see <a href="http://home.ccil.org/~cowan/XML/tagsoup/">TagSoup</a> 
 */
public class Html2Text2 implements ContentHandler {
private StringBuffer sb;

public Html2Text2() {
}

public void parse(String str) throws IOException, SAXException {
    XMLReader reader = new Parser();
    reader.setContentHandler(this);
    sb = new StringBuffer();
    reader.parse(new InputSource(new StringReader(str)));
}

public String getText() {
    return sb.toString();
}

@Override
public void characters(char[] ch, int start, int length)
    throws SAXException {
    for (int idx = 0; idx < length; idx++) {
    sb.append(ch[idx+start]);
    }
}

@Override
public void ignorableWhitespace(char[] ch, int start, int length)
    throws SAXException {
    sb.append(ch);
}

// The methods below do not contribute to the text
@Override
public void endDocument() throws SAXException {
}

@Override
public void endElement(String uri, String localName, String qName)
    throws SAXException {
}

@Override
public void endPrefixMapping(String prefix) throws SAXException {
}


@Override
public void processingInstruction(String target, String data)
    throws SAXException {
}

@Override
public void setDocumentLocator(Locator locator) {
}

@Override
public void skippedEntity(String name) throws SAXException {
}

@Override
public void startDocument() throws SAXException {
}

@Override
public void startElement(String uri, String localName, String qName,
    Attributes atts) throws SAXException {
}

@Override
public void startPrefixMapping(String prefix, String uri)
    throws SAXException {
}
}

如果你是为Android编写程序，你可以这样做……

androidx.core.text.HtmlCompat.fromHtml(指令,HtmlCompat.FROM_HTML_MODE_LEGACY) .toString ()

我的5美分:

String[] temp = yourString.split("&");
String tmp = "";
if (temp.length > 1) {

    for (int i = 0; i < temp.length; i++) {
        tmp += temp[i] + "&";
    }
    yourString = tmp.substring(0, tmp.length() - 1);
}

简单地执行JSoup .parse(html).text()有两个潜在的问题(对于JSoup 1.7.3):

它从文本中删除换行符 它转换文本&lt;脚本&gt;>到<脚本

如果您使用它来防止XSS，这有点烦人。下面是我在一个改进的解决方案中最好的尝试，使用JSoup和Apache StringEscapeUtils:

// breaks multi-level of escaping, preventing &amp;lt;script&amp;gt; to be rendered as <script>
String replace = input.replace("&amp;", "");
// decode any encoded html, preventing &lt;script&gt; to be rendered as <script>
String html = StringEscapeUtils.unescapeHtml(replace);
// remove all html tags, but maintain line breaks
String clean = Jsoup.clean(html, "", Whitelist.none(), new Document.OutputSettings().prettyPrint(false));
// decode html again to convert character entities back into text
return StringEscapeUtils.unescapeHtml(clean);

注意，最后一步是因为我需要将输出作为纯文本使用。如果您只需要HTML输出，那么您应该能够删除它。

下面是一堆测试用例(从输入到输出):

{"regular string", "regular string"},
{"<a href=\"link\">A link</a>", "A link"},
{"<script src=\"http://evil.url.com\"/>", ""},
{"&lt;script&gt;", ""},
{"&amp;lt;script&amp;gt;", "lt;scriptgt;"}, // best effort
{"\" ' > < \n \\ é å à ü and & preserved", "\" ' > < \n \\ é å à ü and & preserved"}

如果你有办法让它变得更好，请告诉我。

你可以简单地使用Android默认的HTML过滤器

    public String htmlToStringFilter(String textToFilter){

    return Html.fromHtml(textToFilter).toString();

    }

上面的方法将为您的输入返回经过HTML过滤的字符串。