PI73022: JSP comments containing "%>" might throw a StringIndexOutOfBoundsException.

Fixes are available

APAR status

Closed as program error.

Error description

The following JSP comment throws a
java.lang.StringIndexOutOfBoundsException:

<!DOCTYPE HTML>
<%@page language="java" contentType="text/html;
charset=UTF-8" pageEncoding="UTF-8"%>
<html>
<head>
<title>Example</title>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8">
</head>
<body>
<%--%>--%>
</body>
</html>

Exception:

SRVE0777E: Exception thrown by application class
'java.lang.StringBuffer.charAt:248'
java.lang.StringIndexOutOfBoundsException: String index out
of range: -1
at java.lang.StringBuffer.charAt(StringBuffer.java:248)
at
com.ibm.ws.jsp.translator.document.JspPageParser.processJspC
omment(JspPageParser.java:1177)
...

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server versions 8.0, 8.5 and 9.0 and        *
*                  Liberty - JavaServer Pages (JSP)            *
****************************************************************
* PROBLEM DESCRIPTION: When a JSP comment contains %> at the   *
*                      beginning of the comment a              *
*                      java.lang.StringIndexOutOfBoundsExcepti *
*                      on will be thrown.                      *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
In a JSP page with a JSP comment that starts with %> a
StringIndexOutOfBoundsException will be thrown.

For example, the following JSP comment throws a
StringIndexOutOfBoundsException:

<!DOCTYPE HTML>
<%@page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<html>
<head>
<title>Example</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-
8">
</head>
<body>
<%--%>--%>
</body>
</html>

Exception:

SRVE0777E: Exception thrown by application class
'java.lang.StringBuffer.charAt:248'
java.lang.StringIndexOutOfBoundsException: String index out of
range: -1
at java.lang.StringBuffer.charAt(StringBuffer.java:248)
at
com.ibm.ws.jsp.translator.document.JspPageParser.processJspComme
nt(JspPageParser.java:1177)
...

Problem conclusion

The JSP engine was modified to handle all JSP comments starting
with %> without throwing a StringIndexOutOfBoundsException.

The fix for this APAR is currently targeted for inclusion in
WebSphere Application Server fix packs 8.0.0.14, 8.5.5.12 and
9.0.0.4, and Liberty 17.0.0.1.  Please refer to the Recommended
Updates page for delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

If a JSP comment starts with %>, precede it with an empty space.
It should look similar to this: <%-- %>--%>.

Comments

APAR Information

APAR number
PI73022
Reported component name
LIBERTY PROFILE
Reported component ID
5724J0814
Reported release
CD0
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-11-30
Closed date
2017-01-12
Last modified date
2017-01-12

APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name
LIBERTY PROFILE
Fixed component ID
5724J0814

Applicable component levels

RCD0 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"CD0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
04 May 2022

Tips

PI73022: JSP comments containing "%>" might throw a StringIndexOutOfBoundsException.

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name

Fixed component ID

Applicable component levels

RCD0 PSY

Document Information

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