Replace characters with HTML entities in java

问题

I want to replace certain characters with their respective HTML entities in an HTML response inside a filter. Characters include <, >, &. I can't use replaceAll() as it will replace all characters, even those that are part of HTML tags.

What is the best approach for doing so?

回答1:

From java you may try, Apache Commons Lang (legacy v2) StringEscapeUtils.escapeHtml().
or with commons-lang3: StringEscapeUtils.escapeHtml4().

^{Please note this also converts à to à & such}

回答2:

If you're using a technology such as JSTL, you can simply print out the value using <c:out value="${myObject.property}"/> and it will be automatically escaped.

The attribute escapeXml is true by default.

escapeXml - Determines whether characters <,>,&,'," in the resulting string should be converted to their corresponding character entity codes. Default value is true.

http://docs.oracle.com/javaee/5/jstl/1.1/docs/tlddocs/

来源：https://stackoverflow.com/questions/10978098/replace-characters-with-html-entities-in-java