How to use appendChild()?(com.docuverse.dom.BasicAttribute)

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1

Hello:
I want to know why there is a HTTP 500 error if there is the last two rows code:
//------------------------------------
BasicDocument doc = new BasicDocument();
BasicElement rootElement = new BasicElement(doc, “rootElement”);

BasicElement node1 = new BasicElement(doc,“node1”);
rootElement.appendChild(node1);

BasicAttribute node1attr = new BasicElement(doc,“node1attr”,“attrvalue”);
node1.appendChild(node1attr);
//---------------------------------

[This message was edited by wangsir on 11 Mar 2002 at 09:12.]

2

Hi,

could it be that the modifications in the last two lines of code create a document which no longer complies to the schema?

There will probably be more information in the error log of the Servlet/Container Engine.

If you could supply some more information on your application (Tamino version, Servlet Engine, etc) we could be of more help!

Thanks,
Trevor.

3

Hi:
Thanks!
My development environment:
Tamino2.3.1.4+Apache1.3.22+Tomcat3.20.
My intent is adding a data via Jsp,for example:




I am looking forward to.

4

Hello.

The last two lines look a little strange:
BasicAttribute node1attr = new BasicElement(doc,“node1attr”,“attrvalue”);

Is this correct? Should the instantiation be of a “new BasicAttribute” too?

(This looks likely to cause a problem at some point - instantiating a BasicElement into a BasicAttribute field…)

Also, I am not sure, but I think that appendChild() may be the wrong way to set an attribute. Isn’t Element.setAttribute(String name, String value) better - or even Element.setAttributeNode(org.w3c.dom.Attr)?

Perhaps someone more familiar with DOM can comment on this…

Cheers,
Trevor.

5

If you are appending a node as an attribute it should be an instance of an attribute not an element. When the parser checks the nodetype it will get a ELEMENT_NODE type, therefore it will just append an element to your parent node instead of an attribute. Usually, the Element object has a setAttribute method you can use. If you really need to do it by appending, create the instance using the constructor of an attribute node, not an element.

6

Sorry,sorry for my carelessness,and Trevor is right.I should have written to “new BasicAttribute”,sorry!
According to what Jfarjona said,I solved it,thanks!