在Java中过滤非法XML字符 [英] Filtering illegal XML characters in Java

问题描述

XML规范定义了XML文档中允许的Unicode字符子集：
http://www.w3.org/TR/REC-xml/#charsets 。

XML spec defines a subset of Unicode characters which are allowed in XML documents: http://www.w3.org/TR/REC-xml/#charsets.

如何从字符串中过滤掉这些字符在Java？

How do I filter out these characters from a String in Java?

简单测试用例：

  Assert.equals("", filterIllegalXML(""+Character.valueOf((char) 2)))

推荐答案

找出XML的所有无效字符并非易事。你需要从Xerces调用或重新实现XMLChar.isInvalid（），

It's not trivial to find out all the invalid chars for XML. You need to call or reimplement the XMLChar.isInvalid() from Xerces,

http://kickjava.com/src/org/apache/xerces/util/XMLChar.java.htm

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