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43 lines
1.9 KiB
ReStructuredText
43 lines
1.9 KiB
ReStructuredText
.. highlight:: kotlin
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.. raw:: html
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<script type="text/javascript" src="_static/jquery.js"></script>
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<script type="text/javascript" src="_static/codesets.js"></script>
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JSON
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====
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Corda provides a module that extends the popular Jackson serialisation engine. Jackson is often used to serialise
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to and from JSON, but also supports other formats such as YaML and XML. Jackson is itself very modular and has
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a variety of plugins that extend its functionality. You can learn more at the `Jackson home page <https://github.com/FasterXML/jackson>`_.
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To gain support for JSON serialisation of common Corda data types, include a dependency on ``net.corda:jackson:XXX``
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in your Gradle or Maven build file, where XXX is of course the Corda version you are targeting (0.9 for M9, for instance).
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Then you can obtain a Jackson ``ObjectMapper`` instance configured for use using the ``JacksonSupport.createNonRpcMapper()``
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method. There are variants of this method for obtaining Jackson's configured in other ways: if you have an RPC
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connection to the node (see ":doc:`clientrpc`") then your JSON mapper can resolve identities found in objects.
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The API is described in detail here:
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* `Kotlin API docs <api/kotlin/corda/net.corda.client.jackson/-jackson-support/index.html>`_
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* `JavaDoc <api/javadoc/net/corda/client/jackson/package-summary.html>`_
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.. container:: codeset
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.. sourcecode:: kotlin
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import net.corda.jackson.JacksonSupport
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val mapper = JacksonSupport.createNonRpcMapper()
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val json = mapper.writeValueAsString(myCordaState) // myCordaState can be any object.
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.. sourcecode:: java
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import net.corda.jackson.JacksonSupport
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ObjectMapper mapper = JacksonSupport.createNonRpcMapper()
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String json = mapper.writeValueAsString(myCordaState) // myCordaState can be any object.
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.. note:: The way mappers interact with identity and RPC is likely to change in a future release.
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