Jackson (API)
From Infogalactic: the planetary knowledge core
| Stable release | 2.x |
|---|---|
| Operating system | Cross-platform |
| Type | API for JSON |
| License | Apache License 2.0 |
| Website | http://wiki.fasterxml.com/JacksonHome |
Jackson is a high-performance JSON processor for Java. Its developers extol the combination of fast, correct, lightweight, and ergonomic attributes of the library.[1][2]
Implemention
Jackson provides the ability to convert a POJO to/from JSON. Jackson also provides a set of annotations for mapping.[3]
Usage Example
Sample code for reading and writing with POJOs may look like as follows:
public class ReadWriteJackson {
public static void main(String[] args) throws IOException {
ObjectMapper mapper = new ObjectMapper();
String jsonInput = "{\"id\":0,\"firstName\":\"Robin\",\"lastName\":\"Wilson\"}";
Person q = mapper.readValue(jsonInput, Person.class);
System.out.println("Read and parsed Person from JSON: " + q);
Person p = new Person("Roger", "Rabbit");
System.out.print("Person object " + p + " as JSON = ");
mapper.writeValue(System.out, p);
}
}
