Example usage for com.fasterxml.jackson.core JsonGenerator writeStartObject

Introduction

In this page you can find the example usage for com.fasterxml.jackson.core JsonGenerator writeStartObject.

Prototype

public abstract void writeStartObject() throws IOException, JsonGenerationException;

Source Link

Document

Method for writing starting marker of a JSON Object value (character '{'; plus possible white space decoration if pretty-printing is enabled).

Usage

From source file:javasnack.snacks.json.PojoEncodeJackson.java

@Override
public void run() {
    ObjectMapper objectMapper = new ObjectMapper();
    try {//from ww w  .j  av  a 2s .  c  om
        String jsonout = objectMapper.writeValueAsString(new EncodePojo());
        System.out.println("--- simple jackson encode ---");
        System.out.println(jsonout);
        String jsonout2 = objectMapper.writerWithDefaultPrettyPrinter().writeValueAsString(new EncodePojo());
        System.out.println("--- default pretty-print jackson encode ---");
        System.out.println(jsonout2);
        System.out.println("--- streaming jackson encode ---");
        JsonFactory jsonFactory = objectMapper.getFactory();
        Writer out = new OutputStreamWriter(System.out);
        JsonGenerator jg = jsonFactory.createGenerator(out);
        jg.setPrettyPrinter(new DefaultPrettyPrinter());
        jg.writeStartObject();
        jg.writeStringField("message", "success");
        jg.writeNumberField("count", 10);
        jg.writeArrayFieldStart("records");
        for (int i = 0; i < 10; i++) {
            jg.writeObject(new EncodePojo());
            Thread.sleep(100);
            jg.flush();
        }
        jg.writeEndArray();
        jg.writeEndObject();
        jg.close();
    } catch (JsonProcessingException e) {
        e.printStackTrace();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:net.logstash.logback.marker.RawJsonAppendingMarkerTest.java

@Test
public void testWriteTo() throws IOException {

    String rawJson = "{\"myField\":\"value\"}";

    StringWriter writer = new StringWriter();
    JsonGenerator generator = FACTORY.createGenerator(writer);

    LogstashMarker marker = Markers.appendRaw("rawJson", rawJson);
    generator.writeStartObject();
    marker.writeTo(generator);/*from   w w  w . j a v  a2s.  com*/
    generator.writeEndObject();
    generator.flush();

    assertThat(writer.toString()).isEqualTo("{\"rawJson\":{\"myField\":\"value\"}}");
}

---

From source file:de.terrestris.shogun.security.ShogunAuthProcessingFilter.java

/**
 * On successful authentication by an Authentication Manager of Spring Security
 * we intercept with this method  and change the respone to include the ROLES of
 * the logged in user./*w ww.j  av  a  2s .  co m*/
 * This way we can react on the ROLES and redirect accordingly within the requesting login form (here login.js)
 *
 * @see WebContent/client/login.js
 */
@Override
protected void successfulAuthentication(HttpServletRequest request, HttpServletResponse response,
        Authentication authResult) throws IOException, ServletException {
    SecurityContextHolder.getContext().setAuthentication(authResult);

    SavedRequestAwareAuthenticationSuccessHandler srh = new SavedRequestAwareAuthenticationSuccessHandler();
    this.setAuthenticationSuccessHandler(srh);
    srh.setRedirectStrategy(new RedirectStrategy() {
        @Override
        public void sendRedirect(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse,
                String s) throws IOException {
            //do nothing, no redirect
        }
    });
    super.successfulAuthentication(request, response, authResult);

    // build a comma separated string of the ROLES
    String authorityText = StringUtils.join(authResult.getAuthorities(), ",");

    // write the servlet return object
    HttpServletResponseWrapper responseWrapper = new HttpServletResponseWrapper(response);
    Writer out = responseWrapper.getWriter();
    JsonFactory jsonFactory = new JsonFactory();
    JsonGenerator jsonGenerator = jsonFactory.createJsonGenerator(out);
    jsonGenerator.writeStartObject();
    jsonGenerator.writeBooleanField("success", true);
    jsonGenerator.writeStringField("name", authResult.getName());
    jsonGenerator.writeStringField("role", authorityText);
    jsonGenerator.writeEndObject();
    jsonGenerator.close();
}

---

From source file:com.twosigma.beaker.chart.serializer.RastersSerializer.java

@Override
public void serialize(Rasters raster, JsonGenerator jgen, SerializerProvider sp)
        throws IOException, JsonProcessingException {

    jgen.writeStartObject();

    jgen.writeObjectField("type", raster.getClass().getSimpleName());
    jgen.writeObjectField("x", raster.getX());
    jgen.writeObjectField("y", raster.getY());
    jgen.writeObjectField("opacity", raster.getOpacity());
    jgen.writeObjectField("visible", raster.getVisible());
    jgen.writeObjectField("yAxis", raster.getYAxis());
    jgen.writeObjectField("position", raster.getPosition());
    if (raster.getWidth() != null) {
        jgen.writeObjectField("width", raster.getWidth());
    }//from  w ww .j  a  v a2  s  . c om
    if (raster.getHeight() != null) {
        jgen.writeObjectField("height", raster.getHeight());
    }
    // datastring will override file path/url
    if (raster.getDataString() != null) {
        jgen.writeObjectField("value", Bytes2Base64(raster.getDataString(), null));
    } else if (!raster.getFilePath().isEmpty()) {
        String path = raster.getFilePath();
        byte[] picture = Files.readAllBytes(new File(path).toPath());
        String extension = "";
        int i = path.lastIndexOf('.');
        if (i > 0) {
            extension = path.substring(i + 1);
        }
        jgen.writeObjectField("value", Bytes2Base64(picture, extension));
    } else if (!raster.getFileUrl().isEmpty()) {
        jgen.writeObjectField("value", raster.getFileUrl());
    }

    jgen.writeEndObject();
}

---

From source file:org.killbill.billing.plugin.meter.timeline.consumer.TimelineChunkDecoded.java

@JsonValue
@Override//from   w  w  w  . ja v  a  2 s  . c o  m
public String toString() {
    try {
        final ByteArrayOutputStream out = new ByteArrayOutputStream();
        final JsonGenerator generator = objectMapper.getJsonFactory().createJsonGenerator(out);
        generator.writeStartObject();

        generator.writeFieldName("metric");
        generator.writeNumber(chunk.getMetricId());

        generator.writeFieldName("decodedSamples");
        generator.writeString(getDecodedSamples());

        generator.writeEndObject();
        generator.close();
        return out.toString();
    } catch (IOException e) {
        log.error("IOException in toString()", e);
    }

    return null;
}

---

From source file:org.numenta.nupic.algorithms.CLAClassifierSerializer.java

@Override
public void serialize(CLAClassifier cla, JsonGenerator jgen, SerializerProvider arg2)
        throws IOException, JsonProcessingException {

    jgen.writeStartObject();
    jgen.writeNumberField("alpha", cla.alpha);
    jgen.writeNumberField("actValueAlpha", cla.actValueAlpha);
    jgen.writeNumberField("learnIteration", cla.learnIteration);
    jgen.writeNumberField("recordNumMinusLearnIteration", cla.recordNumMinusLearnIteration);
    jgen.writeNumberField("maxBucketIdx", cla.maxBucketIdx);

    StringBuilder sb = new StringBuilder();
    for (int i : cla.steps.toArray()) {
        sb.append(i).append(",");
    }//www .  j a  v  a 2 s  .co  m
    sb.setLength(sb.length() - 1);
    jgen.writeStringField("steps", sb.toString());

    sb = new StringBuilder();
    for (Tuple t : cla.patternNZHistory) {
        sb.append(t.get(0)).append("-").append(Arrays.toString((int[]) t.get(1))).append(";");
    }
    sb.setLength(sb.length() - 1);
    jgen.writeStringField("patternNZHistory", sb.toString());

    sb = new StringBuilder();
    for (Tuple t : cla.activeBitHistory.keySet()) {
        sb.append(t.get(0)).append(",").append(t.get(1)).append("-");
        BitHistory bh = cla.activeBitHistory.get(t);
        sb.append(bh.id).append("=").append(bh.stats).append("=").append(bh.lastTotalUpdate).append(";");
    }
    sb.setLength(sb.length() - 1);
    jgen.writeStringField("activeBitHistory", sb.toString());

    jgen.writeArrayFieldStart("actualValues");
    for (Object o : cla.actualValues) {
        jgen.writeObject(o);
    }
    jgen.writeEndArray();
    jgen.writeEndObject();

}

---

From source file:io.gravitee.definition.jackson.datatype.api.ser.ApiSerializer.java

@Override
public void serialize(Api api, JsonGenerator jgen, SerializerProvider provider) throws IOException {
    jgen.writeStartObject();
    jgen.writeStringField("id", api.getId());
    jgen.writeStringField("name", api.getName());
    jgen.writeObjectField("version", api.getVersion());

    if (api.getProxy() != null) {
        jgen.writeObjectField("proxy", api.getProxy());
    }/*from w  ww  .  j  a  v  a2  s .  co  m*/

    if (api.getPaths() != null) {
        jgen.writeObjectFieldStart("paths");
        api.getPaths().forEach((s, path) -> {
            try {
                jgen.writeObjectField(s, path);
            } catch (IOException e) {
                e.printStackTrace();
            }
        });

        jgen.writeEndObject();
    }

    if (api.getServices() != null && !api.getServices().isEmpty()) {
        jgen.writeObjectField("services", api.getServices());
    }

    if (api.getResources() != null && !api.getResources().isEmpty()) {
        jgen.writeArrayFieldStart("resources");
        for (Resource resource : api.getResources()) {
            jgen.writeObject(resource);
        }
        jgen.writeEndArray();
    }

    if (api.getProperties() != null) {
        jgen.writeObjectFieldStart("properties");
        api.getProperties().forEach((s, property) -> {
            try {
                jgen.writeObjectField(s, property);
            } catch (IOException e) {
                e.printStackTrace();
            }
        });

        jgen.writeEndObject();
    }

    if (api.getTags() != null && !api.getTags().isEmpty()) {
        jgen.writeArrayFieldStart("tags");
        api.getTags().forEach(tag -> {
            try {
                jgen.writeObject(tag);
            } catch (IOException e) {
                e.printStackTrace();
            }
        });
        jgen.writeEndArray();
    }

    jgen.writeEndObject();
}

---

From source file:ch.ralscha.extdirectspring.util.MapActionSerializer.java

@Override
public void serialize(Map<String, List<Action>> value, JsonGenerator jgen, SerializerProvider provider)
        throws IOException {
    if (null != value) {
        jgen.writeStartObject();
        for (Entry<String, List<Action>> entry : value.entrySet()) {
            String key = entry.getKey();
            jgen.writeArrayFieldStart(key);
            List<Action> actions = entry.getValue();
            for (Action action : actions) {
                // PrettyPrinter is not set the generator is on one line
                // mode
                if (jgen.getPrettyPrinter() != null && action instanceof ActionDoc) {// insertion
                    // of
                    // doc
                    // here
                    ActionDoc actionDoc = (ActionDoc) action;
                    jgen.writeRaw("\n\t/**");
                    if (actionDoc.isDeprecated()) {
                        jgen.writeRaw("\n\t* @deprecated");
                    }/*from www  .  ja v  a  2  s.c  o m*/
                    jgen.writeRaw("\n\t* " + actionDoc.getName() + ": " + actionDoc.getMethodComment());
                    jgen.writeRaw("\n\t* @author: " + actionDoc.getAuthor());
                    jgen.writeRaw("\n\t* @version: " + actionDoc.getVersion());
                    jgen.writeRaw("\n\t*");
                    for (Entry<String, String> entry2 : actionDoc.getParameters().entrySet()) {
                        jgen.writeRaw("\n\t* @param: [" + entry2.getKey() + "] " + entry2.getValue());
                    }
                    jgen.writeRaw("\n\t* @return");
                    for (Entry<String, String> entry2 : actionDoc.getReturnMethod().entrySet()) {
                        jgen.writeRaw("\n\t*\t [" + entry2.getKey() + "] " + entry2.getValue());
                    }
                    jgen.writeRaw("\n\t*/\n");
                }
                jgen.writeObject(action);
            }
            jgen.writeEndArray();
        }
        jgen.writeEndObject();
    }
}

---

From source file:org.lamop.riche.model.RelationWorkSourceSerializer.java

@Override
public void serialize(RelationWorkSource t, JsonGenerator jsonGenerator, SerializerProvider sp)
        throws IOException, JsonProcessingException {

    //        try {
    jsonGenerator.writeStartObject();

    jsonGenerator.writeStringField("extract", t.getExtract());
    jsonGenerator.writeStringField("nature", t.getNature());

    Source source = t.getSource();
    Source sourceSer = new Source();
    sourceSer.setId(source.getId());/*from  w  w w .  j  av a2 s.  com*/
    sourceSer.setArticleTitle(source.getArticleTitle());
    sourceSer.setTitle(source.getTitle());
    //            sourceSer.setRelationPerson(source.getRelationPerson());
    jsonGenerator.writeObjectField("source", sourceSer);

    //            WorkEntity workSer = (WorkEntity) t.getWorkEntity().clone();

    WorkEntity workSer = new WorkEntity();
    workSer.setId(t.getWorkEntity().getId());
    workSer.setTitle(t.getWorkEntity().getTitle());

    //            workSer.getRelationWorkSource().clear();

    //        WorkEntity work = t.getWorkEntity();
    //        workSer.setId(work.getId());
    //        workSer.setTitle(work.getTitle());
    jsonGenerator.writeObjectField("workEntity", workSer);
    jsonGenerator.writeEndObject();
    //        } 
    //        catch (CloneNotSupportedException ex) {
    //            Logger.getLogger(RelationWorkSourceSerializer.class.getName()).log(Level.SEVERE, null, ex);
    //        }
}

---

From source file:org.mashti.jetson.json.JsonRequestEncoder.java

@Override
protected void encodeRequest(final ChannelHandlerContext context, final Integer id, final Method method,
        final Object[] arguments, final ByteBuf out) throws RPCException {

    JsonGenerator generator = null;
    try {//from   ww  w. j a  v  a  2  s . c o m
        generator = createJsonGenerator(out);
        generator.writeStartObject();
        generator.writeObjectField(ID_KEY, id);
        generator.writeObjectField(VERSION_KEY, DEFAULT_VERSION);
        generator.writeObjectField(METHOD_NAME_KEY, dispatch.get(method));
        writeRequestParameters(method, arguments, generator);
        generator.writeEndObject();
        generator.flush();
        generator.close();
    } catch (final JsonProcessingException e) {

        LOGGER.debug("failed to encode request", e);
        throw new InternalServerException(e);
    } catch (final IOException e) {
        LOGGER.debug("IO error occurred while encoding request", e);
        throw new TransportException(e);
    } finally {
        CloseableUtil.closeQuietly(generator);
    }
}

---

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