public interface Escaper
For example, an XML escaper would convert the literal string "Foo<Bar>" into
"Foo<Bar>" to prevent "<Bar>" from being confused with an XML tag. When the
resulting XML document is parsed, the parser API will return this text as the original literal
string "Foo<Bar>".
An Escaper instance is required to be stateless, and safe when used concurrently by
multiple threads.
Several popular escapers are defined as constants in the class CharEscapers. To create
your own escapers, use CharEscaperBuilder, or extend CharEscaper or
UnicodeEscaper.
| Modifier and Type | Method and Description |
|---|---|
java.lang.Appendable |
escape(java.lang.Appendable out)
Returns an
Appendable instance which automatically escapes all text appended to it
before passing the resulting text to an underlying Appendable. |
java.lang.String |
escape(java.lang.String string)
Returns the escaped form of a given literal string.
|
java.lang.String escape(java.lang.String string)
Note that this method may treat input characters differently depending on the specific escaper implementation.
UnicodeEscaper handles UTF-16
correctly, including surrogate character pairs. If the input is badly formed the escaper should
throw IllegalArgumentException.
CharEscaper handles Java characters independently and does not verify the input for
well formed characters. A CharEscaper should not be used in situations where input is not
guaranteed to be restricted to the Basic Multilingual Plane (BMP).
string - the literal string to be escapedstringjava.lang.NullPointerException - if string is nulljava.lang.IllegalArgumentException - if string contains badly formed UTF-16 or cannot be
escaped for any other reasonjava.lang.Appendable escape(java.lang.Appendable out)
Appendable instance which automatically escapes all text appended to it
before passing the resulting text to an underlying Appendable.
Note that this method may treat input characters differently depending on the specific escaper implementation.
UnicodeEscaper handles UTF-16
correctly, including surrogate character pairs. If the input is badly formed the escaper should
throw IllegalArgumentException.
CharEscaper handles Java characters independently and does not verify the input for
well formed characters. A CharEscaper should not be used in situations where input is not
guaranteed to be restricted to the Basic Multilingual Plane (BMP).
out - the underlying Appendable to append escaped output toAppendable which passes text to out after escaping it.Copyright © 2008–2023. All rights reserved.