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All,
On 2/4/20 3:33 PM, Christopher Schultz wrote:
> I just upgraded an application from commons-beanutils-1.9.3 to
> commons-beanutils-1.9.4 that is using Velocity 1.7 and Tools 2.0
> and I'm getting this error on startup:
>
> Caused by: org.apache.velocity.tools.config.NullKeyException: Key
> is null for tool whose class is 'null' at
> org.apache.velocity.tools.config.ToolConfiguration.validate(ToolConfig
ur
>
>
ation.java:348)
I think I've figured this out.
The ToolConfiguration class has two sets of properties:
public void setClass(Class); // Write-only
public void getClassname(String); // Write
public String getClassname(); // Read
In my tools.xml, I had the following XML:
<tools>
<toolbox scope="application">
<tool class="org.apache.velocity.tools.generic.AlternatorTool" />
[...]
</toolbox>
</tools>
In commons-beanutils up through 1.9.3, it would happily convert the
"class" XML attribute into an instance of java.lang.Class representing
the Class named in the string, and call setClass(Class) which ... just
sets the class name:
public void setClass(Class clazz)
{
setClassname(clazz.getName());
}
In commons-beanutils-1.9.4, it doesn't want to allow you to set a
Class property anymore. I didn't follow all the code in
commons-beanutils all the way down, but I was able to finally see that
it wasn't finding "class" as a settable property on the
ToolConfiguration class for whatever reason (probably a blacklist of
property names).
The obvious solution is just to use the "classname" attribute instead
of the "class" attribute and everything is fine:
<tools>
<toolbox scope="application">
<tool classname="org.apache.velocity.tools.generic.AlternatorTool" /
>
[...]
</toolbox>
</tools>
And now I get what I'm expecting:
FactoryConfiguration from 4 sources with 2 toolboxes:
Toolbox 'application' with 1 properties [scope -auto-> application; ]
and 15 tools:
Tool 'alternator' =>
org.apache.velocity.tools.generic.AlternatorTool with 1 properties
[classname -auto-> org.apache.velocity.tools.generic.AlternatorTool; ]
[...]
I hope that helps someone else with this same problem, because I was
seriously worried about what I was going to do, here :)
I'm going to post a message to the users@ list summarizing this just
in case it happens to anyone else.
- -chris
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