I just did this the other day for both XML and JSON.
For XML I did:
public static TransactionRequest deserialize(String xmlFile) {
try {
XmlMapper mapper = new XmlMapper();
InputStream stream = new FileInputStream(xmlFile);
return mapper.readValue(stream, TransactionRequest.class);
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
public static TransactionRequest deserialize(String xmlFile) {
try {
XmlMapper mapper = new XmlMapper();
InputStream stream = new FileInputStream(xmlFile);
return mapper.readValue(stream, TransactionRequest.class);
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
Where needed I used things like:
@JacksonXmlProperty(localName = "return")
private PostSale creditCardReturn;
and
@JacksonXmlProperty(isAttribute = true)
For JSON I did
public static JSONRequest deserialize(String json)
{
try
{
ObjectMapper mapper = new ObjectMapper();
return mapper.readValue(json, JSONRequest.class);
}
catch (Exception ex)
{
ex.printStackTrace();
}
return null;
}
and
public String serialize()
{
try
{
final ObjectMapper mapper = new ObjectMapper();
return mapper.writeValueAsString(this);
}
catch (Exception ex)
{
ex.printStackTrace();
}
return null;
}
HTH,
Ralph
On Apr 1, 2014, at 1:05 PM, Gary Gregory <[email protected]> wrote:
> Well... so much for Jackson making my life easy. Jackson says it "supports"
> JAXB annotations but that must be only for the simplest cases. Jackson does
> not work with the JAXB annotations I used on Log4jLogEvents. This suppose
> this is not surprising. Back to the drawing board...
>
> Gary
>
>
> On Tue, Apr 1, 2014 at 12:05 PM, Gary Gregory <[email protected]> wrote:
> All good ideas, thank you. The JSON API I know best is GSON, which let's you
> listen to objects opening and closing. Maybe Jackson has something like
> that... I'll have to dig in.
>
> Gary
>
>
> On Tue, Apr 1, 2014 at 11:14 AM, Ralph Goers <[email protected]>
> wrote:
> So you are hacking the stream before passing it to the unmarshalling
> framework? Then you will have to keep track of the ‘{‘ and ‘}’ characters
> yourself, either with the stack Matt suggests or as a counter.
>
> Ralph
>
> On Apr 1, 2014, at 8:07 AM, Matt Sicker <[email protected]> wrote:
>
>> Keep a stack of {'s and pop them when you get a }. Like a deterministic
>> pushdown automaton.
>>
>>
>> On 1 April 2014 07:45, Gary Gregory <[email protected]> wrote:
>> I have a local patch for LOG4J2-583 to have the Log4j TCP and UDP socket
>> servers unmarhsal XML log events.
>>
>> This is "easy" for XML because when you have a stream of bytes and you know
>> its encoding, you can look for the end of an event by looking for its
>> closing tag: </Event>. Right now, my XML processing code, looks for the end
>> tag and feeds JAXB a substring from the buffer. Easy. Done.
>>
>> Not so much with JSON. You cannot use the same hack, there is no end tag.
>> All you have is an "end of object" closing bracket "}" which looks the same
>> as the closing marker for all other objects.
>>
>> So it looks like I would need to hook in a little deeper into a JSON
>> unmarshalling framework to extract each JSON log events as I see them.
>>
>> Any thoughts here?
>>
>> Gary
>>
>> --
>> E-Mail: [email protected] | [email protected]
>> Java Persistence with Hibernate, Second Edition
>> JUnit in Action, Second Edition
>> Spring Batch in Action
>> Blog: http://garygregory.wordpress.com
>> Home: http://garygregory.com/
>> Tweet! http://twitter.com/GaryGregory
>>
>>
>>
>> --
>> Matt Sicker <[email protected]>
>
>
>
>
> --
> E-Mail: [email protected] | [email protected]
> Java Persistence with Hibernate, Second Edition
> JUnit in Action, Second Edition
> Spring Batch in Action
> Blog: http://garygregory.wordpress.com
> Home: http://garygregory.com/
> Tweet! http://twitter.com/GaryGregory
>
>
>
> --
> E-Mail: [email protected] | [email protected]
> Java Persistence with Hibernate, Second Edition
> JUnit in Action, Second Edition
> Spring Batch in Action
> Blog: http://garygregory.wordpress.com
> Home: http://garygregory.com/
> Tweet! http://twitter.com/GaryGregory
