jsonauto

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>