JarCastingjsonauto
JSON auto serialize / deserialize from / to Java.
Background
I am not a big fan of reflection-based automatic serialization and deserialization of Java objects to and from JSON - reflection is always slower than explicit serialization and it sometimes gives unexpected results. But I know that many people prefer it so I've added it as an optional additional package to my jsonutil library.
Usage
To serialize any object:
JSONValue json = JSONSerializer.serialize(object);
String text = json.toJSON();
Nested objects are handled automatically, as are many of the commonly-used classes from java.lang and java.util (more documentation to follow).
To deserialize:
JSONValue json = JSON.parse(text);
UserClass userObject = JSONDeserializer.deserialize(UserClass.class, json);
See the JavaDoc for more information.
Annotations
Annotations are available to specify that a field is to be ignored, or always included even if null (the default behaviour is to ignore null fields). The field name may also be specified.
@JSONIgnore- never serialize@JSONAlways- always serialize@JSONName("name")- use the specified name when serializing
Maven
The library is in the Maven Central Repository; the co-ordinates are:
<dependency>
<groupId>net.pwall.util</groupId>
<artifactId>jsonauto</artifactId>
<version>1.0</version>
</dependency>