Print Jersey JSON in Unit Testing

问题

Is there any plain way

• to print a JAXB annotated instance
• in JSON format (as exactly jersey will print in AS)
• while running unit testing
• without any embedded server launched?

I can run and see in XML with JAXBContext, Marshaller, and so on.

Is there any example for JSON?

---

I found it. It's similar to JAXB.

With Jersey API

final JSONJAXBContext context = new JSONJAXBContext(...);

final JSONMarshaller marshaller = context.createJSONMarshaller();
marshaller.marshallToJSON(...);

final JSONUnmarshaller unmarshaller = context.createJSONUnmarshaller();
final T unmarshalled = unmarshaller.unmarshalJAXBElementFromJSON(
        ..., T.class).getValue();

---

for Maven

<dependency>
  <groupId>com.sun.jersey</groupId>
  <artifactId>jersey-json</artifactId>
  <scope>test</scope>
</dependency>

回答1:

It is possible:

...
StringWriter writer = new StringWriter();
marshaller.marshallToJSON(objectToMarshall, writer)
logger.debug(writer.toString());
...

You can use an StringWriter to take the String representation of the marshalled JSON output.

来源：https://stackoverflow.com/questions/10593543/print-jersey-json-in-unit-testing