java - 用 Java 中的等效字符替换 HTML 代码

Question

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Answer 1

Also, is there any way to optimize this regex?

是的，不要为这个任务使用正则表达式，使用 Apache StringEscapeUtils来自 Apache commons lang :

import org.apache.commons.lang.StringEscapeUtils;
...
String withCharacters = StringEscapeUtils.unescapeHtml(yourString);

JavaDoc 说:

Unescapes a string containing entity escapes to a string containing the actual Unicode characters corresponding to the escapes. Supports HTML 4.0 entities.

For example, the string "<Français>" will become "<Français>"

If an entity is unrecognized, it is left alone, and inserted verbatim into the result string. e.g. ">&zzzz;x" will become ">&zzzz;x".