PM94792: EXCEPTIONS ARE THROWN IF THERE IS A NEW LINE AFTER "${". THE JSP WILL NOT LOAD CORRECTLY.

Fixes are available

APAR status

Closed as program error.

Error description

Exceptions are thrown if there is a new line after "${". The
JavaServer Pages (JSP) will not load correctly. If the code is
in the same line, no exceptions are thrown.

The following exception is thrown:

Exception created: [javax.el.ELException: Error Parsing:
${\r\nTestExpression}
at
org.apache.el.lang.ExpressionBuilder.createNodeInternal(Expressi
onBuilder.java:147)
at
org.apache.el.lang.ExpressionBuilder.build(ExpressionBuilder.jav
a:172)
at
org.apache.el.lang.ExpressionBuilder.createValueExpression(Expre
ssionBuilder.java:216)
...
Caused by: org.apache.el.parser.ParseException: Encountered
"<ILLEGAL_CHARACTER> "\\ "" at line 1, column 3.
Was expecting one of:
<INTEGER_LITERAL> ...
<FLOATING_POINT_LITERAL> ...
<STRING_LITERAL> ...
"true" ...
"false" ...
"null" ...
"(" ...
"!" ...
"not" ...
"empty" ...
"-" ...
<IDENTIFIER> ...

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  IBM WebSphere Application Server Full       *
*                  Profile verions 8.0 and 8.5.5 or Liberty    *
*                  Profile version 8.5.5 users of JavaServer   *
*                  Pages (JSP).                                *
****************************************************************
* PROBLEM DESCRIPTION: An Expression Language (EL)             *
*                      expression cannot be parsed if it       *
*                      contains a carriage return, new line,   *
*                      or tab characters.                      *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
If an EL expression contains a carriage return (\r), new line
(\n), or tab (\t) characters within the syntax of the
expression a javax.el.ELException will be thrown while parsing
the expression.  The cause of the exception is because the JSP
Container adds an extra backslash (\) before the carriage
return, new line, and tab characters within the expression.
An example of the EL expression is:
${\r\n\tTestExpression}

Problem conclusion

The JSP Container was modified to not add an extra escape
character during JSP translation, therefore allowing the EL
expression to be parsed properly.

To enable this behavior, the following JSP attribute must be
set to true in the application's ibm-web-ext.xml file:

doNotEscapeWhitespaceCharsInExpression

valid values are: true / false (default)

Alternatively, the following WebContainer custom property can
be set to enable this behavior for all applications within the
WebContainer:

com.ibm.ws.jsp.doNotEscapeWhitespaceCharsInExpression

valid values are: true / false (default)

The instructions to set a WebContainer custom property are here:
http://www-01.ibm.com/support/docview.wss?uid=swg21284395

The fix for this APAR is currently targeted for inclusion in
fix packs 8.0.0.8 and 8.5.5.2.  Please refer to the Recommended
Updates page for delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

Comments

APAR Information

APAR number
PM94792
Reported component name
WEBSPHERE APP S
Reported component ID
5724J0800
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-08-08
Closed date
2013-10-11
Last modified date
2013-10-11

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
WEBSPHERE APP S
Fixed component ID
5724J0800

Applicable component levels

R800 PSY
UP
R850 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":"8.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 April 2022

Tips

PM94792: EXCEPTIONS ARE THROWN IF THERE IS A NEW LINE AFTER "${". THE JSP WILL NOT LOAD CORRECTLY.

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

R800 PSY

R850 PSY

Document Information

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