java adding cdata to xml string

Question

I need to add CDATA to xml string for sign it with certificate.

String looks like:

<SignedContent>someparametres</SignedContent>

Result must be like:

<![CDATA[<SignedContent>someparametres</SignedContent>]]>

How can i do this? Pls help

P.S. Xml string has only one row (removed all tabs, all spaces, BOM)

Does it really have to be CDATA? could the content simply be encoded for use within xml (i.e. <SignedContent>someparameters</SignedContent>)? — Brett Okken, Jun 13 '14 at 12:07

score 9 · Accepted Answer · answered Jun 13 '14 at 14:23

9

It sounds like you just want:

Node cdata = doc.createCDATASection(text);
parentElement.appendChild(cdata);

answered Jun 13 '14 at 14:23

Jon Skeet

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How can i add cdata to xml where root element is SignedContent. If i add cdata like u wrote, it will be looks like `<![CDATA[someparameters]]>`. – NovaCenturion Jun 16 '14 at 10:53
1

@bakash_erni: It's not clear what you mean. What you've shown in your question is CDATA whose content *is* SignedContent. In other words, you should be taking your SignedContent element, converting that to text, creating a CDATASection from that, and adding it to some other node. You can't have an XML document whose root node is itself CDATA. – Jon Skeet Jun 16 '14 at 10:56

score 9 · Answer 2 · answered Mar 30 '17 at 11:17

This post may be hold but i feel i should respond, this may help someone else.

        JAXBContext context = JAXBContext.newInstance(SignedContent.class);
        Marshaller marshallerObj = context.createMarshaller();
        marshallerObj.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        StringWriter sw = new StringWriter();
        marshallerObj.marshal(signedContentObj, sw);
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setValidating(true);
        factory.setExpandEntityReferences(false);
        Document doc = factory.newDocumentBuilder().newDocument();
        doc.createCDATASection(sw.toString()).getData();

You can play around from here...

Oops,my response is in JAVA, since the question did not specify any language — Rasheed, Mar 30 '17 at 11:19

score -5 · Answer 3 · answered Jun 13 '14 at 12:50

-5

Use Javas + operator:

"<![CDATA[" + "<SignedContent>someparametres</SignedContent>" + "]]>"

answered Jun 13 '14 at 12:50

ceving

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8

*Please* don't start manipulating XML documents using string operations. Recipe for failure. – Jon Skeet Jun 13 '14 at 14:21
@JonSkeet CDATA contains just character data. It is nothing more than a string. – ceving Nov 21 '17 at 15:23
1

Good luck with that if the text you want to represent happens to include `]]>`. I'd expect an XML API to make that error clear immediately, rather than giving you an invalid XML document. Bypassing the XML model and using strings is pretty much *always* a bad idea. – Jon Skeet Nov 21 '17 at 15:25
@JonSkeet [CDATA sections cannot nest.](https://www.w3.org/TR/xml/#sec-cdata-sect) – ceving Nov 21 '17 at 15:36
3

Indeed. So will your approach highlight that problem immediately, or create an invalid doc? The latter, I believe - whereas by using an XML API, you can get validation as you construct the doc, making it easier to find problems. – Jon Skeet Nov 21 '17 at 16:31

java adding cdata to xml string

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