https://issues.apache.org/bugzilla/show_bug.cgi?id=55855
Bug ID: 55855
Summary: Unexpected WsFilter is configured in a webapp that
does not use WebSocket
Product: Tomcat 7
Version: 7.0.47
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: [email protected]
Reporter: [email protected]
Reproducible in Tomcat 7 on 7.0.47 and on the current 7.0.x (@ r1548765).
I have not tested Tomcat 8.
Steps to reproduce:
1. Create the file webapps/ROOT/test.jsp in the default ROOT web application.
[[[
<% throw new RuntimeException(); %>
]]]
2. Configure JAVA_HOME to point to a Java 7 JRE (7u45).
3. Start Tomcat
4. Browse http://localhost:8080/test.jsp
The following stacktrace is printed on the error page and into the log files:
[[[
org.apache.jasper.JasperException: An exception occurred processing JSP page
/test.jsp at line 1
1: <% throw new RuntimeException(); %>
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
]]]
The "WsFilter" in the stacktrace is unexpected, as the default ROOT web
application does not use WebSockets.
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