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Posted to dev@tomcat.apache.org by bu...@apache.org on 2016/08/03 17:58:20 UTC
[Bug 59939] New: NoSuchMethodException:
java.util.HashMap.get(java.lang.String)
https://bz.apache.org/bugzilla/show_bug.cgi?id=59939
Bug ID: 59939
Summary: NoSuchMethodException:
java.util.HashMap.get(java.lang.String)
Product: Tomcat 7
Version: 7.0.53
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Jasper
Assignee: dev@tomcat.apache.org
Reporter: housevenn@gmail.com
Our code is broken after upgrading Tomcat from 7.0.52 to 7.0.55 with exception
javax.el.MethodNotFoundException: java.lang.NoSuchMethodException:
java.util.HashMap.get(java.lang.String)
The JSP code is like this
<a:string id="${textMap.get(report)}"/>
'report' is a String, and 'textMap' is a Map. When invoking
textMap.get(report), ELResolver tries to find the get() method that exactly
matched the argument type. The get() method takes an Object in method signature
but 'report' argument is a String type. That results in the Exception.
Stacktrace:
Caused by: javax.el.MethodNotFoundException: java.lang.NoSuchMethodException:
java.util.HashMap.get(java.lang.String)
at javax.el.BeanELResolver.invoke(BeanELResolver.java:422)
at
org.apache.jasper.el.JasperELResolver.invoke(JasperELResolver.java:139)
at org.apache.el.parser.AstValue.getValue(AstValue.java:174)
at
org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184)
at
org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:950)
at
org.apache.jsp.tag.web.reportSelector_tag._jspx_meth_aui_005fdropdownOption_005f0(reportSelector_tag.java:222)
at
org.apache.jsp.tag.web.reportSelector_tag._jspx_meth_c_005fforEach_005f0(reportSelector_tag.java:193)
at
org.apache.jsp.tag.web.reportSelector_tag._jspx_meth_aui_005fdropdown_005f0(reportSelector_tag.java:162)
at
org.apache.jsp.tag.web.reportSelector_tag.doTag(reportSelector_tag.java:126)
at
org.apache.jsp.tag.web.genericReport_tag._jspx_meth_vxa_005freportSelector_005f0(genericReport_tag.java:295)
at
org.apache.jsp.tag.web.genericReport_tag._jspx_meth_aui_005ffixedGridColumn_005f0(genericReport_tag.java:266)
at
org.apache.jsp.tag.web.genericReport_tag._jspx_meth_aui_005ffixedGridRow_005f0(genericReport_tag.java:231)
at
org.apache.jsp.tag.web.genericReport_tag.doTag(genericReport_tag.java:145)
at
org.apache.jsp.layouts.AraBasicDashboardLayout1_jsp._jspx_meth_vxa_005fgenericReport_005f0(AraBasicDashboardLayout1_jsp.java:169)
at
org.apache.jsp.layouts.AraBasicDashboardLayout1_jsp._jspService(AraBasicDashboardLayout1_jsp.java:133)
... 38 more
Caused by: java.lang.NoSuchMethodException:
java.util.HashMap.get(java.lang.String)
at java.lang.Class.getMethod(Class.java:1786)
at javax.el.BeanELResolver.invoke(BeanELResolver.java:419)
... 52 more }, RID=1ERZG1MHXPWD3PBNK67H
It was working in Tomcat 7.0.52 because 7.0.52 tries to find a random method
with the same name without considering the argument type. That caused problem
when there is method overload and was fixed in 7.0.53 here
https://bz.apache.org/bugzilla/show_bug.cgi?id=55483
This fix broke our code because now ELResolver tries to find a method exactly
matching the argument type.
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[Bug 59939] NoSuchMethodException:
java.util.HashMap.get(java.lang.String)
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=59939
--- Comment #1 from Hao <ho...@gmail.com> ---
A logic should be added so that when there is no method overload, just return
the only method that matches the name, so that it is compatible with the
version 7.0.52. Current behavior broke our code in multiple places and makes
method invocation hard to use. For example, the code below is broken because
actionItems is an ArrayList, but the method writeValueAsString() takes an
Object in method signature.
<c:set target="${actionItemsMap}" property="actionItems"
value="${objectMapper.writeValueAsString(actionItems)}" />
javax.el.MethodNotFoundException: java.lang.NoSuchMethodException:
org.codehaus.jackson.map.ObjectMapper.writeValueAsString(java.util.ArrayList)
Moreover, we have a method in some class defined like this
public List<String> getActionOptions(Map<String, String> mappings)
And it is being invoked like this in JSP
<c:forEach var="option" items="${doc.getActionOptions(endpointMappings)}">
The new Tomcat version caused exception here too:
Caused by: javax.el.MethodNotFoundException: java.lang.NoSuchMethodException:
com.amazon.edi.ssi.lib.types.IntegrationStatus.getActionOptions(java.util.HashMap)
The exception happens because ELResolver tries to find a method that matches
the runtime argument type of variable 'endpointMappings', which is a HashMap.
But the method signature takes an Map interface argument so it does not match.
That should be fixed.
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[Bug 59939] NoSuchMethodException:
java.util.HashMap.get(java.lang.String)
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=59939
Hao <ho...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |housevenn@gmail.com
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[Bug 59939] NoSuchMethodException:
java.util.HashMap.get(java.lang.String)
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=59939
--- Comment #2 from Mark Thomas <ma...@apache.org> ---
A simple, self-contained JSP that demonstrates the issue would help.
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[Bug 59939] NoSuchMethodException:
java.util.HashMap.get(java.lang.String)
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=59939
Hao <ho...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |INVALID
Status|NEW |RESOLVED
--- Comment #3 from Hao <ho...@gmail.com> ---
(In reply to Mark Thomas from comment #2)
> A simple, self-contained JSP that demonstrates the issue would help.
I am sorry Mark. This is an issue on our side. These parameterized method calls
are supported in the new version. My apologies.
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