Hi, On Wed, Jun 11, 2008 at 12:55 PM, Eddie Lau TO <[EMAIL PROTECTED]> wrote: > For example, > using <s:select list="" ... > > if the value supplied into list attribute is wrong, > the translated page start from the position of <s:select> tag will be blank. > > How to get more information of tag-related problem for troubleshooting ?
Is the box "really" empty or did just the listKey/listValue expressions on each item of the list fail? When the select box is "really" empty and you (want) fill it with a value from either your action or your model, most likely the OGNL expression is wrong. Thus it would help to increase the log level of OGNL, as it evaluates the expression handed as list and will then report the error. IIRC this can be done by configuring some log4j log4j appenders, but you'll have to look up the correct categories/loggers which will do the trick. If this gives no viable insights you always can get the struts/xwork/ognl code involed, attatch it to your project and debug the code directly in your container using the shared memory or remote debugging interface of your JVM. Most likely it will suffice to break in the struts component class which is invoked by the tag, then check the list expression which was set into it and try to find the object yourself by hand by inspecting the ValueStack object in the struts component. The errorrous part of the expression should become obvious then. My 2 cents, hope they help. Bye, -Ralf --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
