Posts Tagged ‘xml’
Java to XML, XML to Java (Marshalling and Unmarshalling)
Wednesday, July 13th, 2011
Introduction
JDK6 and JAXB2.x (which comes with JDK6) make marshalling Java to XML and unmarshalling XML to Java a snap, almost trivial.
Example
Java to XML
package foo.bar;
import java.math.BigDecimal;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
public class JavaToXML {
public static void main(String[] args) throws Exception {
JAXBContext context = JAXBContext.newInstance(Product.class);
Marshaller m = context.createMarshaller();
m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
Product object = new Product();
object.setCode("WI1");
object.setName("Widget Number One");
object.setPrice(BigDecimal.valueOf(300.00));
m.marshal(object, System.out);
}
}
XML to Java
package foo.bar;
import java.io.File;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;
public class XMLToJava {
public static void main(String[] args) {
try {
JAXBContext jc = JAXBContext.newInstance(Product.class);
Unmarshaller u = jc.createUnmarshaller();
File f = new File("product.xml");
Product product = (Product) u.unmarshal(f);
System.out.println(product.getCode());
System.out.println(product.getName());
System.out.println(product.getPrice());
} catch (JAXBException e) {
e.printStackTrace();
}
}
}
product.java
Note: the @XmlRootElement is vital here!
package foo.bar;
import java.math.BigDecimal;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement
public class Product {
private String code;
private String name;
private BigDecimal price;
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public BigDecimal getPrice() {
return price;
}
public void setPrice(BigDecimal price) {
this.price = price;
}
}
product.xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<product>
<code>WI1</code>
<name>Widget Number One</name>
<price>300.0</price>
</product>
Tags: java, jaxb, xml
Posted in Examples | No Comments »
The Processing Instruction Target Matching “[xX][mM][lL]” is Not Allowed
Friday, June 24th, 2011
Background
When parsing XML you receive the following error:
...The Processing Instruction Target Matching "[xX][mM][lL]" is Not Allowed...
Solution
The chances are you have some sort of whitespace (or control character) infront of your XML declaration:
..<?xml version="1.0" encoding="utf-8"?>
It may even be that you have more than one XML declaration in the document..!
Tags: xml
Posted in quick tips | No Comments »
How to stop XSLT from escaping XML in output
Tuesday, September 28th, 2010
I was asked by a colleague today how to prevent XSLT from escaping XML “special characters” in its output. i.e. < was being escaped to < ;.
I didn't know but somebody else did...
<xsl:value-of select=”somethingWhichContainsXml” /> should be <xsl:value-of select=”somethingWhichContainsXml” disable-output-escaping=”yes” />
Tags: xml, xslt
Posted in Development, How to's | No Comments »
JAXB @XmlAnyElement example
Monday, June 7th, 2010
The problem
I was recently working on a JAXB centric app which was required to capture “arbitary” xml. e.g.
<a>
<b></b>
<c></c>
<d>
<!-- "Unknown" XML here -->
<maybee></maybee>
<maybef></maybef>
<!-- etc etc -->
<d />
</d></a>
How could I ever capture the contents of
(more...)
Tags: annotations, java, jaxb, xml
Posted in Development, quick tips | No Comments »
How to convert a CLOB to an XMLType in Oracle
Thursday, June 3rd, 2010
Not much comment to add here; code says it all
PROCEDURE clobToXMLType(myClob IN CLOB)
IS
l_xmlType XMLTYPE;
-- do something
BEGIN
l_xmltype := XMLTYPE.createXML(myClob);
EXCEPTION
WHEN OTHERS THEN
RAISE;
END clobToXMLType;
Tags: oracle, plsql, xml
Posted in Development, quick tips | No Comments »