Newbie question about Java Updating and Inserting XML file

[ysongpsu]

I searched the forum and see lots of examples, but I'm still confused.
I'm using DOM.

Say I've got an "a.xml" file, and have two methods, updateXML() that
updates an existing record, and insertXML() that inserts into this
file.
Anybody can give me a hint how to implement these two functions?
How to write back to the file? I've learned how to read it:

InputStream aXML = getResourceAsStream("a.xml");
DocumentBuilderFactory dbf =
DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(aXML);
doc.getDocumentElement().normalize();
NodeList nodeLst = doc.getElementsByTagName("record");

Thanks a lot.

 

[=?ISO-8859-1?Q?Arne_Vajh=F8j?=]

I searched the forum and see lots of examples, but I'm still confused.
I'm using DOM.

Say I've got an "a.xml" file, and have two methods, updateXML() that
updates an existing record, and insertXML() that inserts into this
file.
Anybody can give me a hint how to implement these two functions?
How to write back to the file? I've learned how to read it:

InputStream aXML = getResourceAsStream("a.xml");
DocumentBuilderFactory dbf =
DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(aXML);
doc.getDocumentElement().normalize();
NodeList nodeLst = doc.getElementsByTagName("record");

There are several options.

I like Xerces:

import org.apache.xml.serialize.OutputFormat;
import org.apache.xml.serialize.XMLSerializer;

....

OutputFormat fmt = new OutputFormat();
fmt.setIndenting(true);
XMLSerializer ser = new XMLSerializer(new FileOutputStream(fnm), fmt);
ser.serialize(doc);

Arne

 

[Rusty Wright]

Here are some packages that I looked at for reading and writing XML
files. Do a google search to find their home pages.

Apache XMLBeans
XStream
Apache Jakarta Commons Betwixt
Castor

 

[Roedy Green]

I searched the forum and see lots of examples, but I'm still confused.
I'm using DOM.

There are a ton of things to try. See
http://mindprod.com/jgloss/xml.html

However, XML is built into Java now, so I would use those tools unless
they are clearly just too awful for the task.

 

[=?ISO-8859-1?Q?Arne_Vajh=F8j?=]

Here are some packages that I looked at for reading and writing XML
files. Do a google search to find their home pages.

Apache XMLBeans
XStream
Apache Jakarta Commons Betwixt
Castor

I think they are XML serialization packages.

Not exactly the same as a simple writing of an XML Document.

Arne

 

[Steve Sobol]

I think they are XML serialization packages.

Yes. XMLBeans and XStream are for sure; I've used them both (although I
prefer XStream).