有没有哪位遇到或知道displaytag中使用href时的空指针异常问题?

同样的代码同样的lib库放在TOMCAT下正常使用,而放到websphere时会出空指针异常!
示例代码如下:
$req.setAttribute("rstlist", $qryRstList)
#bodytag( Table "name=rstlist" "width=100%" "class=sortableTable" "sort=list"
"cellpadding=$!{tblcellpadding}")
#tag( Column "property=col1" "title=代码" "sortable=true" "width=12%"
"href=***.action" "paramId=col1" "paramProperty=col1") #tag( Column "property=col2" "title=名称" "width=15%")
#end
在 "href=***.action" "paramId=col1" "paramProperty=col1"位置websphere上就不生成超级链接列了,看日志出了个nullpointer异常!
[06-9-5 15:07:04:313 CST] 0000003f OgnlUtil W Caught OgnlException while setting property 'href' on type 'org.displaytag.tags.ColumnTag'.
[06-9-5 15:07:04:316 CST] 0000003f OgnlUtil W TRAS0014I: 下列异常已记录 java.lang.NullPointerException
at org.displaytag.tags.ColumnTag.setHref(ColumnTag.java:265)
at sun.reflect.GeneratedMethodAccessor258.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java(Compiled Code))
at java.lang.reflect.Method.invoke(Method.java(Compiled Code))
at ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java(Compiled Code))
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java(Compiled Code))
at ognl.OgnlRuntime.setMethodValue(OgnlRuntime.java(Compiled Code))
............

请知道咋回事的高手指点一下!

顶上去,没有高手指点一下吗?

我顶........................

准备结帖,来者有分.........