Example usage for com.fasterxml.jackson.databind ObjectMapper writeValueAsString

Introduction

In this page you can find the example usage for com.fasterxml.jackson.databind ObjectMapper writeValueAsString.

Prototype

@SuppressWarnings("resource")
public String writeValueAsString(Object value) throws JsonProcessingException 

Source Link

Document

Method that can be used to serialize any Java value as a String.

Usage

From source file:com.arpnetworking.jackson.ObjectMapperFactoryTest.java

@Test
public void testGetInstanceConversion() throws IOException {
    final String expectedJson = "{}";
    final ObjectMapper objectMapper = ObjectMapperFactory.getInstance();
    final JsonNode jsonNode = objectMapper.readValue(expectedJson, JsonNode.class);
    final String actualJson = objectMapper.writeValueAsString(jsonNode);
    Assert.assertEquals(expectedJson, actualJson);
}

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From source file:eu.trentorise.opendata.commons.test.jackson.JacksonTest.java

/**
 * Shows that nasty Jackson deserializes "" into null instead of
 * {@link Locale.ROOT} !!!// w  w w  . j  ava  2  s . co m
 *
 */
@Test(expected = AssertionError.class)
public void testLocaleDeser() throws JsonProcessingException, IOException {
    ObjectMapper om = new ObjectMapper();
    String json = om.writeValueAsString(new RootLocale());
    LOG.log(Level.FINE, "json = {0}", json);
    RootLocale res = om.readValue(json, RootLocale.class);
    assertNotNull(res.locale);
    assertEquals(Locale.ROOT, res.locale);
}

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From source file:com.arpnetworking.jackson.ObjectMapperFactoryTest.java

@Test
public void testNewInstanceConversion() throws IOException {
    final String expectedJson = "{}";
    final ObjectMapper objectMapper = ObjectMapperFactory.createInstance();
    final JsonNode jsonNode = objectMapper.readValue(expectedJson, JsonNode.class);
    final String actualJson = objectMapper.writeValueAsString(jsonNode);
    Assert.assertEquals(expectedJson, actualJson);
}

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From source file:org.springframework.security.jackson2.UserDeserializerTests.java

@Test
public void serializeUserTest() throws JsonProcessingException, JSONException {
    ObjectMapper mapper = buildObjectMapper();
    User user = new User("admin", "1234", Collections.singletonList(new SimpleGrantedAuthority("USER_ROLE")));
    String userJson = mapper.writeValueAsString(user);
    String expectedJson = "{\"@class\": \"org.springframework.security.core.userdetails.User\", \"username\": \"admin\", \"password\": \"1234\", \"accountNonExpired\": true, \"accountNonLocked\": true, \"credentialsNonExpired\": true, \"enabled\": true, \"authorities\": [\"java.util.Collections$UnmodifiableSet\", [{\"@class\": \"org.springframework.security.core.authority.SimpleGrantedAuthority\", \"role\": \"USER_ROLE\"}]]}";
    JSONAssert.assertEquals(expectedJson, userJson, true);
}

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From source file:uk.ac.surrey.ee.iot.fiware.ngsi9.notify.NotifierAtRegistration.java

@Override
public void run() {

    List<SubscribeContextAvailabilityRequest> subReq = SubscriptionStoreAccess.matchRegToSubs(regReq);

    int subReqListSize = subReq.size();

    List<ContextRegistration> cr = regReq.getContextRegistration();

    //iterate through each subscription
    for (int i = 0; i < subReqListSize; i++) {

        NotifyContextAvailabilityRequest ncar = new NotifyContextAvailabilityRequest();
        List<ContextRegistrationResponse> crrl = new ArrayList<>();

        int crListSize = cr.size();
        //iterate through each context registration
        for (int j = 0; j < crListSize; j++) {
            ContextRegistrationResponse crr = new ContextRegistrationResponse();
            crr.setContextRegistration(cr.get(j));
            crrl.add(crr);/*from   w  ww  .  j a v  a 2 s .  c o  m*/
        }
        ncar.getContextRegistrationResponse().addAll(crrl);
        ncar.setSubscriptionId(subReq.get(i).getSubscriptionId());
        //serialize request

        String notifMsg = null;
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.enable(SerializationFeature.INDENT_OUTPUT);

        try {
            notifMsg = objectMapper.writeValueAsString(ncar);
        } catch (JsonProcessingException ex) {
            Logger.getLogger(Resource02_Discovery.class.getName()).log(Level.SEVERE, null, ex);
        }

        //notify subscriber
        String callbackUrl = subReq.get(i).getReference();
        ClientResource ngsiClient = new ClientResource(callbackUrl);
        ngsiClient.accept(MediaType.APPLICATION_JSON);
        String payload = notifMsg;
        try {
            ngsiClient.post(payload).write(System.out); //Response is not handled for now
        } catch (IOException ex) {
            Logger.getLogger(NotifierAtRegistration.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
}

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From source file:com.samlikescode.stackoverflow.questions.q29630371.PersonTest.java

@Test
    public void serializePersonTest() throws JsonProcessingException {
        // set up test data including parent properties
        Person person = new Person("Database property 1", "Database property 2");
        person.setIndex("1");
        person.setFirstName("Joe");
        person.setLastName("Bob");

        // register the mix in
        ObjectMapper om = new ObjectMapper().addMixIn(Person.class, PersonMixIn.class);

        // translate object to JSON string using Jackson
        String json = om.writeValueAsString(person);

        assertFalse(json.contains("dbPropertyA"));
        assertFalse(json.contains("dbPropertyB"));
        assertFalse(json.contains("index"));
        System.out.println(json);
    }//w w  w. ja  v  a 2s .co m

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From source file:marshalsec.Jackson.java

/**
 * {@inheritDoc}//from w w w  .j a  v a  2  s.  c  o  m
 *
 * @see marshalsec.MarshallerBase#marshal(java.lang.Object)
 */
@Override
public String marshal(Object o) throws Exception {
    ObjectMapper mapper = new ObjectMapper();
    mapper.enableDefaultTyping();
    return mapper.writeValueAsString(o);
}

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From source file:ch.icclab.cyclops.resource.impl.RateStatusResource.java

/**
 * Build the static rate of a resource//w  w w .j  ava 2  s  .  c o  m
 *
 * Pseudo Code
 * 1. Get the latest static rates from a list
 * 2. Construct the response
 * 3. Return the json string
 *
 * @return Representation
 */
private Representation buildStaticRateResponse() {
    String jsonStr = null;
    RateStatusResponse response = new RateStatusResponse();
    ObjectMapper mapper = new ObjectMapper();
    response.setRate_policy("static");
    response.setRate(Load.getStaticRate());
    try {
        jsonStr = mapper.writeValueAsString(response);
    } catch (JsonProcessingException e) {
        e.printStackTrace();
    }
    JsonRepresentation jsonResp = new JsonRepresentation(jsonStr);
    return jsonResp;
}

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From source file:org.commonjava.cartographer.result.ProjectPathTest.java

@Test
public void jsonRoundTrip() throws Exception {
    ProjectVersionRef ref = new SimpleProjectVersionRef("org.foo", "bar", "1");
    ProjectPath in = new ProjectPath(Collections.singletonList(new SimpleParentRelationship(
            URI.create("http://nowhere.com"), ref, new SimpleProjectVersionRef("org.dep", "project", "1.1"))));

    ObjectMapper mapper = new ObjectMapper();
    mapper.registerModules(new ProjectVersionRefSerializerModule(), new ProjectRelationshipSerializerModule());
    mapper.enable(SerializationFeature.INDENT_OUTPUT);

    String json = mapper.writeValueAsString(in);

    System.out.println(json);/*from   w w w.  j  ava 2s. c o  m*/

    ProjectPath out = mapper.readValue(json, ProjectPath.class);
}

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From source file:com.blockwithme.lessobjects.util.JSONParser.java

/**
 * To json string.//from  ww  w .jav a  2 s .c  om
 *
 * @return the string
 */
@SuppressWarnings("null")
public String toJSONString() {

    if (jsonString == null) {
        if (fromSchema) {
            try {
                final ObjectWriter writer = initMapper();
                jsonString = writer.writeValueAsString(schema);
            } catch (final JsonProcessingException jpe) {
                throw new IllegalStateException(jpe.getMessage(), jpe);
            }
        } else {
            try {
                if (format == SchemaFormat.JSON) {
                    jsonString = jsonOrXMLString;
                } else {
                    if (xmlString == null) {
                        xmlString = jsonOrXMLString;
                    }
                    final XmlMapper xmlMapper = new XmlMapper();
                    schema = xmlMapper.readValue(jsonOrXMLString, StructSchema.class);
                    final ObjectMapper jsonMapper = new ObjectMapper();
                    jsonString = jsonMapper.writeValueAsString(schema);
                }
            } catch (final IOException e) {
                throw new IllegalStateException(e.getMessage(), e);
            }
        }
    }
    return jsonString;
}

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