https://issues.apache.org/bugzilla/show_bug.cgi?id=52335
Bug #: 52335
Summary: Tomcat escapes all the \% in Template Text as %.
Product: Tomcat 5
Version: 5.5.34
Platform: PC
OS/Version: Windows XP
Status: NEW
Severity: normal
Priority: P2
Component: Jasper
AssignedTo: dev@tomcat.apache.org
ReportedBy: zhangl...@cn.fujitsu.com
Classification: Unclassified
hi,
I noticed that there is a problem at the % escape on Tomcat 5.5.34.
(1)The problem
The JSP Specification 2.0 says:
------
JSP.1.6 Quoting and Escape Conventions
→ Quoting in Template Text
・A literal <% is quoted by <\%
------
But the result of the % escape on Tomcat 5.5.34 is :
------
Not only the \% of <\% is escaped as %.
All the \% in Template Text is escaped as %.
------
If I want to show \% on the HTML page, it is needed to write \\% in a JSP
file.
The problem also occurs on Tomcat 5.5.23 or Tomcat7.0.8.
And it seems that the problem has already occured on Tomcat 5.5.0.
(2)The reason
The reason of the problem is that the following method is not implemented
according to JSP Specification.
・The class:
org.apache.jasper.compiler.Parser
・The method:
void parseTemplateText(Node parent)
・The part of source:
------
else if (ch == '\\') {
if (!reader.hasMoreInput()) {
ttext.write('\\');
break;
}
// Look for \% or \$
// Only recognize \$ if isELIgnored is false
char next = (char)reader.peekChar();
if (next == '%' || (next == '$' && !pageInfo.isELIgnored())) {
▲
ch = reader.nextChar();
}
}
------
Is it a bug?
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