https://bz.apache.org/bugzilla/show_bug.cgi?id=61364
Bug ID: 61364
Summary: Stream not closed when detecting encoding of a JSP
Product: Tomcat 8
Version: 8.5.16
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: Jasper
Assignee: dev@tomcat.apache.org
Reporter: peter.stoc...@alphabot.com
Target Milestone: ----
We had an issue that prevented us from deleting certain JSPs in an embedded
Tomcat.
The cause of that seems to be that an InputStream is not closed after trying to
figure out the encoding of a .jsp file.
>From our point of view this seems to affect at least Tomcat 8.5.16 with
following classes involved:
org.apache.jasper.compiler.ParserController:
> 321: InputStream inStream = JspUtil.getInputStream(absFileName, jar, ctxt);
> 322: EncodingDetector encodingDetector = new EncodingDetector(inStream);
=> The InputStream is retrieved and passed to the EncodingDetector.
org.apache.jasper.compiler.EncodingDetector:
> 96: XMLStreamReader xmlStreamReader =
> XML_INPUT_FACTORY.createXMLStreamReader(stream);
=> The EncodingDetector creates an XMLStreamReader on its static
XML_INPUT_FACTORY.
As a workaround we configured the JspConfig like this to prevent the detection
of the encoding:
> <jsp-config>
> <jsp-property-group>
> <url-pattern>*.jsp</url-pattern>
> <is-xml>false</is-xml>
> </jsp-property-group>
> </jsp-config>
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