Do you know of a JAXB setting to prevent standalone="yes" from being generated in the resulting XML?
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
This question is related to
xml
xsd
jaxb
xml-binding
This property:
marshaller.setProperty("com.sun.xml.bind.xmlDeclaration", false);
...can be used to have no:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
However, I wouldn't consider this best practice.
just try
private String marshaling2(Object object) throws JAXBException, XMLStreamException {
JAXBContext jaxbContext = JAXBContext.newInstance(object.getClass());
Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
jaxbMarshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
StringWriter writer = new StringWriter();
writer.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
jaxbMarshaller.marshal(object, writer);
return writer.toString();
}
If you make document dependent on DOCTYPE (e.g. use named entities) then it will stop being standalone, thus standalone="yes" won't be allowed in XML declaration.
However standalone XML can be used anywhere, while non-standalone is problematic for XML parsers that don't load externals.
I don't see how this declaration could be a problem, other than for interoperability with software that doesn't support XML, but some horrible regex soup.
just if someone else is still struggeling with this problem, you may consider using
marshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
to remove all of the XML declaration and just write your own String at the beginning of your output stream / method
If you have <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
but want this: <?xml version="1.0" encoding="UTF-8"?>
Just do:
marshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
marshaller.setProperty("com.sun.xml.internal.bind.xmlHeaders", "<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
You can either use
marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
or
marshaller.setProperty("com.sun.xml.bind.xmlDeclaration", false)
to disable the default XML declaration, and then add your custom XML declaration,
<?xml version="1.0" encoding="UTF-8"?>
by
marshaller.setProperty("com.sun.xml.bind.xmlHeaders",
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
to the generated xml, thus avoiding the standalone="yes" property.
If you are using only the default javax.xml package, you could set the JAXB_FRAGMENT option of the marshaller to 'true' (this omits the default xml processing instruction) and use the writeProcessingInstruction method of the XMLStreamWriter to insert your own:
xmlStreamWriter.writeProcessingInstruction("xml", "version=\"1.0\" encoding=\"UTF-8\"");
jaxbMarshaller.setProperty( Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
jaxbMarshaller.marshal(object, xmlStreamWriter);
xmlStreamWriter.writeEndDocument();
You can either use
marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
or
marshaller.setProperty("com.sun.xml.bind.xmlDeclaration", false)
to disable the default XML declaration, and then add your custom XML declaration,
<?xml version="1.0" encoding="UTF-8"?>
by
marshaller.setProperty("com.sun.xml.bind.xmlHeaders",
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
to the generated xml, thus avoiding the standalone="yes" property.
in JAXB that is part of JDK1.6
marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
If you are using only the default javax.xml package, you could set the JAXB_FRAGMENT option of the marshaller to 'true' (this omits the default xml processing instruction) and use the writeProcessingInstruction method of the XMLStreamWriter to insert your own:
xmlStreamWriter.writeProcessingInstruction("xml", "version=\"1.0\" encoding=\"UTF-8\"");
jaxbMarshaller.setProperty( Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
jaxbMarshaller.marshal(object, xmlStreamWriter);
xmlStreamWriter.writeEndDocument();
jaxbMarshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
jaxbMarshaller.setProperty("com.sun.xml.internal.bind.xmlHeaders", "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>");
This worked for me with JDK1.7. standalone=\"no\" can be removed to get only rest of the xml part
If you make document dependent on DOCTYPE (e.g. use named entities) then it will stop being standalone, thus standalone="yes" won't be allowed in XML declaration.
However standalone XML can be used anywhere, while non-standalone is problematic for XML parsers that don't load externals.
I don't see how this declaration could be a problem, other than for interoperability with software that doesn't support XML, but some horrible regex soup.
You can use: marshaller.setProperty("jaxb.fragment", Boolean.TRUE);
It works for me on Java 8
jaxbMarshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
jaxbMarshaller.setProperty("com.sun.xml.internal.bind.xmlHeaders", "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>");
This worked for me with JDK1.7. standalone=\"no\" can be removed to get only rest of the xml part
in JAXB that is part of JDK1.6
marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
I don't have a high enough "reputation" to have the "privilege" to comment. ;-)
@Debasis, note that the property you've specified:
"com.sun.xml.internal.bind.xmlHeaders"
should be:
"com.sun.xml.bind.xmlHeaders" (without the "internal", which are not meant to be used by the public)
If I use the "internal" property as you did, I get a javax.xml.bind.PropertyException
You can use: marshaller.setProperty("jaxb.fragment", Boolean.TRUE);
It works for me on Java 8
just if someone else is still struggeling with this problem, you may consider using
marshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
to remove all of the XML declaration and just write your own String at the beginning of your output stream / method
If you make document dependent on DOCTYPE (e.g. use named entities) then it will stop being standalone, thus standalone="yes" won't be allowed in XML declaration.
However standalone XML can be used anywhere, while non-standalone is problematic for XML parsers that don't load externals.
I don't see how this declaration could be a problem, other than for interoperability with software that doesn't support XML, but some horrible regex soup.
I'm using Java 1.8 and JAXB 2.3.1
First, be sure to be using java 1.8 in pom.xml
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
Then in source code I used: (the key was the internal part)
// remove standalone=yes
marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
marshaller.setProperty("com.sun.xml.internal.bind.xmlHeaders", "<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
In case you are getting property exception, add the following configuration:
jaxbMarshaller.setProperty("com.sun.xml.internal.bind.xmlHeaders",
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
jaxbMarshaller.setProperty("com.sun.xml.internal.bind.xmlDeclaration", Boolean.FALSE);
jaxbMarshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
If you make document dependent on DOCTYPE (e.g. use named entities) then it will stop being standalone, thus standalone="yes" won't be allowed in XML declaration.
However standalone XML can be used anywhere, while non-standalone is problematic for XML parsers that don't load externals.
I don't see how this declaration could be a problem, other than for interoperability with software that doesn't support XML, but some horrible regex soup.
I don't have a high enough "reputation" to have the "privilege" to comment. ;-)
@Debasis, note that the property you've specified:
"com.sun.xml.internal.bind.xmlHeaders"
should be:
"com.sun.xml.bind.xmlHeaders" (without the "internal", which are not meant to be used by the public)
If I use the "internal" property as you did, I get a javax.xml.bind.PropertyException
I'm using Java 1.8 and JAXB 2.3.1
First, be sure to be using java 1.8 in pom.xml
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
Then in source code I used: (the key was the internal part)
// remove standalone=yes
marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
marshaller.setProperty("com.sun.xml.internal.bind.xmlHeaders", "<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
In case you are getting property exception, add the following configuration:
jaxbMarshaller.setProperty("com.sun.xml.internal.bind.xmlHeaders",
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
jaxbMarshaller.setProperty("com.sun.xml.internal.bind.xmlDeclaration", Boolean.FALSE);
jaxbMarshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
If you have <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
but want this: <?xml version="1.0" encoding="UTF-8"?>
Just do:
marshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
marshaller.setProperty("com.sun.xml.internal.bind.xmlHeaders", "<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
Source: Stackoverflow.com