How to check proper XML

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gk - 07 Feb 2006 17:50 GMT

my application will get a XML and store in a String variable.

String variable="a big xml string";

i want to check whether it is a valid/proper XML or not.

How do i check ?

my XML has these tags .

Example XML
===========

<note>
<to>peru</to>
<from>sadu</from>
<heading>headline</heading>
<body>do it now</body>
</note>

this is sample XML.

Now, how to check at runtime whether i am having a valid/proper
XML(this means,contains above tags) in the String variable?

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Oliver Wong - 07 Feb 2006 18:12 GMT

> my application will get a XML and store in a String variable.
>
[quoted text clipped - 20 lines]
> Now, how to check at runtime whether i am having a valid/proper
> XML(this means,contains above tags) in the String variable?

Write a schema (XSD file) or document definition (DTD file) that
describes the structure of your XML file, then use a Java parser which
performs validation as part of its parsing phase.

Here's a tutorial on writing XML schemas:

http://www.w3schools.com/schema/default.asp

- Oliver

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Roedy Green - 08 Feb 2006 23:15 GMT

>my application will get a XML and store in a String variable.
>
[quoted text clipped - 3 lines]
>
>How do i check ?

You need a XSD or DTD to describe the format of your file.

See http://mindprod.com/jgloss/xml.html
for various verifiers.

There is source code for a simple-minded one posted at
http://mindprod.com/jgloss/jnlp.html
for verifying jnlp a flavour of XML using an XSD schema.

Signature

Canadian Mind Products, Roedy Green.
http://mindprod.com Java custom programming, consulting and coaching.

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How to check proper XML

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