XML programming in Java technology
Short summary:
Although many of the sample programs I discuss here use JAXP. assuming that you know how to compile and run a Java program, and that you ...
Long summary:
Sometimes you might want to parse an XML string. Typically, a parser works with an
XML document stored in a file. If another component sends you a string containing
an XML document, you don't want to write the string out to a file and then read the ile back in and parse it. What you want to do instead is invoke the parser against
the string itself.
The trick is to convert the Java
String
into an
org.xml.sax.InputSource
. The
parser -- whether it's DOM-based or SAX-based (whether it uses JAXP's
DocumentBuilder
or
SAXParser
) -- can take the
InputSource
and parse it just
like any other markup. To convert the
String
, the code is: In the earlier DOM applications, you got a DOM tree from the parser after it parsed
an XML file. Sometimes, you might want to create a DOM tree without an XML
source file. For example, you might need to convert the results of an SQL query into
a DOM tree, and then use a library of XML tools against the DOM tree.
The
DomBuilder
application does this. Although all of the nodes it builds are
hard-wired into the application, you can easily add your own code to generate the
nodes you want.
As you'd expect, you need to start by asking the factory object to create a
Source: www.javaprogrammingworld.com
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