Java Code Examples for javax.json.JsonWriter#writeObject()

String toJson(JsonObject toJsonFunc) {
    StringWriter stringWriter = new StringWriter();
    JsonWriter jsonWriter = Json.createWriter(new PrintWriter(stringWriter));
    jsonWriter.writeObject(toJsonFunc);
    jsonWriter.close();
    return stringWriter.toString();
}
 

@Test
@RunAsClient
public void testJavaxJsonp() throws IOException {
    JsonObject jsonOut = Json.createObjectBuilder()
            .add("greeting", "hi")
            .build();
    StringWriter stringWriter = new StringWriter(); 
    JsonWriter jsonWriter = Json.createWriter(stringWriter);
    jsonWriter.writeObject(jsonOut);

    String response = Request.Post("http://localhost:8080/jsonp").body(new StringEntity(stringWriter.toString()))
        .execute().returnContent().asString().trim();
    JsonReader jsonReader = Json.createReader(new StringReader(response));
    JsonObject jsonIn = jsonReader.readObject();

    assertThat(jsonIn.getString("greeting")).isEqualTo("hi");
    assertThat(jsonIn.getString("fromServlet")).isEqualTo("true");
}
 

public static String prettyJson(JsonObject obj) {
    Map<String, Boolean> config = new HashMap<>();
    config.put(JsonGenerator.PRETTY_PRINTING, true);
    StringWriter strWriter = new StringWriter();
    PrintWriter pw = new PrintWriter(strWriter);
    JsonWriter jsonWriter = Json.createWriterFactory(config).createWriter(pw);
    jsonWriter.writeObject(obj);
    return strWriter.toString();
}
 

/**
 * write a JsonObject formatted in a pretty way into a String
 * @param jsonObject
 * @return a String containing the JSON
 */
public static String writePretty(JsonObject jsonObject) {
	JsonWriterFactory factory = createPrettyWriterFactory();
	StringWriter sw = new StringWriter();
	JsonWriter writer = factory.createWriter(sw);
	writer.writeObject(jsonObject);
	String ret = sw.toString();
	writer.close();
	return ret;
}
 

@Override
public void marshal(Object obj, OutputStream out) {
    JsonObject jsonObj = marshal((Event)obj);
    JsonWriter writer = Json.createWriter(out);
    writer.writeObject(jsonObj);
    writer.close();
}
 

public String asString(JsonObject jsonObject) {
  StringWriter eventStringWriter = new StringWriter();
  JsonWriter writer = Json.createWriter(eventStringWriter);
  writer.writeObject(jsonObject);
  writer.close();

  return eventStringWriter.toString();
}
 

public String asString(JsonObjectBuilder builder) {
  JsonObject jsonObject = builder.build();

  StringWriter eventStringWriter = new StringWriter();
  JsonWriter writer = Json.createWriter(eventStringWriter);
  writer.writeObject(jsonObject);
  writer.close();

  return eventStringWriter.toString();
}
 

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    JsonReader jsonReader = Json.createReader(req.getReader());
    JsonObject jsonIn = jsonReader.readObject();
    JsonWriter jsonWriter = Json.createWriter(resp.getWriter());
    JsonObject jsonOut =
        Json.createObjectBuilder()
            .add("greeting", jsonIn.getString("greeting"))
            .add("fromServlet", "true")
            .build();
    jsonWriter.writeObject(jsonOut);
}
 

public static void main(String[] args) throws FileNotFoundException {

		Employee emp = createEmployee();

		JsonObjectBuilder empBuilder = Json.createObjectBuilder();
		JsonObjectBuilder addressBuilder = Json.createObjectBuilder();
		JsonArrayBuilder phoneNumBuilder = Json.createArrayBuilder();

		for (long phone : emp.getPhoneNumbers()) {
			phoneNumBuilder.add(phone);
		}
		
		addressBuilder.add("street", emp.getAddress().getStreet())
						.add("city", emp.getAddress().getCity())
							.add("zipcode", emp.getAddress().getZipcode());
		
		empBuilder.add("id", emp.getId())
					.add("name", emp.getName())
						.add("permanent", emp.isPermanent())
							.add("role", emp.getRole());
		
		empBuilder.add("phoneNumbers", phoneNumBuilder);
		empBuilder.add("address", addressBuilder);
		
		JsonObject empJsonObject = empBuilder.build();
		
		System.out.println("Employee JSON String\n"+empJsonObject);
		
		//write to file
		OutputStream os = new FileOutputStream("emp.txt");
		JsonWriter jsonWriter = Json.createWriter(os);
		/**
		 * We can get JsonWriter from JsonWriterFactory also
		JsonWriterFactory factory = Json.createWriterFactory(null);
		jsonWriter = factory.createWriter(os);
		*/
		jsonWriter.writeObject(empJsonObject);
		jsonWriter.close();
	}
 

public String toJson() {
    StringWriter stringWriter = new StringWriter();
    JsonWriter jsonWriter = Json.createWriter(new PrintWriter(stringWriter));
    jsonWriter.writeObject(toJsonObject());
    jsonWriter.close();
    return stringWriter.toString();
}
 

String toJson() {
    StringWriter stringWriter = new StringWriter();
    JsonWriter jsonWriter = Json.createWriter(new PrintWriter(stringWriter));
    jsonWriter.writeObject(toJsonObject());
    jsonWriter.close();
    return stringWriter.toString();
}
 

String toJson() {
    StringWriter stringWriter = new StringWriter();
    JsonWriter jsonWriter = Json.createWriter(new PrintWriter(stringWriter));
    jsonWriter.writeObject(toJsonObject());
    jsonWriter.close();
    return stringWriter.toString();
}
 

String toJson() {
    StringWriter stringWriter = new StringWriter();
    JsonWriter jsonWriter = Json.createWriter(new PrintWriter(stringWriter));
    jsonWriter.writeObject(this.toJsonObject());
    jsonWriter.close();
    return stringWriter.toString();
}
 

String toJson() {
    StringWriter stringWriter = new StringWriter();
    JsonWriter jsonWriter = Json.createWriter(new PrintWriter(stringWriter));
    jsonWriter.writeObject(toJsonObject());
    jsonWriter.close();
    return stringWriter.toString();
}
 

public void reportHealth(OutputStream out, SmallRyeHealth health) {
    if (health.isDown() && HealthLogging.log.isInfoEnabled()) {
        // Log reason, as not reported by container orchestrators, yet container may get killed.
        HealthLogging.log.healthDownStatus(health.getPayload().toString());
    }

    JsonWriterFactory factory = jsonProvider.createWriterFactory(JSON_CONFIG);
    JsonWriter writer = factory.createWriter(out);

    writer.writeObject(health.getPayload());
    writer.close();
}
 

/**
 * Generate certificate revocation list.
 *
 * @param registrar     admin user configured in CA-server
 * @param revokedBefore Restrict certificates returned to revoked before this date if not null.
 * @param revokedAfter  Restrict certificates returned to revoked after this date if not null.
 * @param expireBefore  Restrict certificates returned to expired before this date if not null.
 * @param expireAfter   Restrict certificates returned to expired after this date if not null.
 * @throws InvalidArgumentException
 */

public String generateCRL(User registrar, Date revokedBefore, Date revokedAfter, Date expireBefore, Date expireAfter)
        throws InvalidArgumentException, GenerateCRLException {

    if (cryptoSuite == null) {
        throw new InvalidArgumentException("Crypto primitives not set.");
    }

    if (registrar == null) {
        throw new InvalidArgumentException("registrar is not set");
    }

    try {
        setUpSSL();

        //---------------------------------------
        JsonObjectBuilder factory = Json.createObjectBuilder();
        if (revokedBefore != null) {
            factory.add("revokedBefore", Util.dateToString(revokedBefore));
        }
        if (revokedAfter != null) {
            factory.add("revokedAfter", Util.dateToString(revokedAfter));
        }
        if (expireBefore != null) {
            factory.add("expireBefore", Util.dateToString(expireBefore));
        }
        if (expireAfter != null) {
            factory.add("expireAfter", Util.dateToString(expireAfter));
        }
        if (caName != null) {
            factory.add(HFCAClient.FABRIC_CA_REQPROP, caName);
        }

        JsonObject jsonObject = factory.build();

        StringWriter stringWriter = new StringWriter();
        JsonWriter jsonWriter = Json.createWriter(new PrintWriter(stringWriter));
        jsonWriter.writeObject(jsonObject);
        jsonWriter.close();
        String body = stringWriter.toString();

        //---------------------------------------

        // send revoke request
        JsonObject ret = httpPost(url + HFCA_GENCRL, body, registrar);

        return ret.getString("CRL");

    } catch (Exception e) {
        logger.error(e.getMessage(), e);
        throw new GenerateCRLException(e.getMessage(), e);
    }
}
 

public void compareJson(JsonObject json, String text) {
    StringWriter writer = new StringWriter();
    JsonWriter jsonWriter = Json.createWriter(writer);
    jsonWriter.writeObject(json);
    assertThat(writer.toString(), equalTo(text));
}
 

/**
 * Marsahl Book to OutputStream
 *
 * @param book
 * @param type
 * @param genericType
 * @param annotations
 * @param mediaType
 * @param httpHeaders
 * @param entityStream
 * @throws IOException
 * @throws WebApplicationException
 */
@Override
public void writeTo(Book book, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException {
    JsonWriter jsonWriter = Json.createWriter(entityStream);
    JsonObject jsonObject = BookMapper.map(book);
    jsonWriter.writeObject(jsonObject);
    jsonWriter.close();
}
 

/**
 * Marsahl Book to OutputStream
 *
 * @param book
 * @param type
 * @param genericType
 * @param annotations
 * @param mediaType
 * @param httpHeaders
 * @param entityStream
 * @throws IOException
 * @throws WebApplicationException
 */
@Override
public void writeTo(Book book, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException {
    JsonWriter jsonWriter = Json.createWriter(entityStream);
    JsonObject jsonObject = BookMapper.map(book);
    jsonWriter.writeObject(jsonObject);
    jsonWriter.close();
}