Example usage for com.fasterxml.jackson.core JsonParser nextToken

Introduction

In this page you can find the example usage for com.fasterxml.jackson.core JsonParser nextToken.

Prototype

public abstract JsonToken nextToken() throws IOException, JsonParseException;

Source Link

Document

Main iteration method, which will advance stream enough to determine type of the next token, if any.

Usage

From source file:com.mozilla.bagheera.validation.Validator.java

public boolean isValidJson(String json) {
    boolean isValid = false;
    JsonParser parser = null;
    try {//w  w w  .j a  va2s .c o  m
        parser = jsonFactory.createJsonParser(json);
        while (parser.nextToken() != null) {
            // noop
        }
        isValid = true;
    } catch (JsonParseException ex) {
        LOG.error("JSON parse error");
    } catch (IOException e) {
        LOG.error("JSON IO error");
    } finally {
        if (parser != null) {
            try {
                parser.close();
            } catch (IOException e) {
                LOG.error("Error closing JSON parser", e);
            }
        }
    }

    return isValid;
}

From source file:io.syndesis.core.json.StringTrimmingJsonDeserializerTest.java

private JsonParser parserWithString(final String value) throws JsonParseException, IOException {
    final JsonParser parser = new ObjectMapper().getFactory()
            .createParser(Optional.ofNullable(value).map(v -> "[\"" + v + "\"]").orElse("[null]"));
    parser.nextToken();// array
    parser.nextToken();// string

    return parser;
}

From source file:org.apache.ode.jacob.soup.jackson.ChannelRefDeserializer.java

@Override
public ChannelRef deserialize(JsonParser jp, DeserializationContext ctxt)
        throws IOException, JsonProcessingException {

    Object target = null;/* w ww .  ja v a  2  s  .  c om*/

    while (jp.nextToken() != JsonToken.END_OBJECT) {
        String fieldname = jp.getCurrentName();
        if (jp.getCurrentToken() == JsonToken.FIELD_NAME) {
            // if we're not already on the field, advance by one.
            jp.nextToken();
        }

        if ("target".equals(fieldname)) {
            target = jp.readValueAs(Object.class);
        }
    }

    if (target == null) {
        throw ctxt.mappingException(ChannelRef.class);
    }

    return new ChannelRef(target);
}

From source file:com.joliciel.jochre.search.webClient.SearchResults.java

public SearchResults(String json) {
    try {//from   w  w w  . jav a 2s.c  o  m
        scoreDocs = new ArrayList<SearchDocument>();
        Reader reader = new StringReader(json);
        JsonFactory jsonFactory = new JsonFactory(); // or, for data binding, org.codehaus.jackson.mapper.MappingJsonFactory 
        JsonParser jsonParser = jsonFactory.createJsonParser(reader);
        // Sanity check: verify that we got "Json Object":
        if (jsonParser.nextToken() != JsonToken.START_OBJECT)
            throw new RuntimeException("Expected START_OBJECT, but was " + jsonParser.getCurrentToken() + " at "
                    + jsonParser.getCurrentLocation());
        while (jsonParser.nextToken() != JsonToken.END_OBJECT) {

            String baseName = jsonParser.getCurrentName();
            LOG.debug("Found baseName: " + baseName);
            if (jsonParser.nextToken() != JsonToken.START_OBJECT)
                throw new RuntimeException("Expected START_OBJECT, but was " + jsonParser.getCurrentToken()
                        + " at " + jsonParser.getCurrentLocation());

            SearchDocument doc = new SearchDocument(baseName, jsonParser);
            scoreDocs.add(doc);

        } // next scoreDoc
    } catch (JsonParseException e) {
        LOG.error(e);
        throw new RuntimeException(e);
    } catch (IOException e) {
        LOG.error(e);
        throw new RuntimeException(e);
    }
}

From source file:com.taveloper.http.test.pojo.parse.ActivityFeedParse.java

public ActivityFeed readJson(JsonParser in) throws JsonParseException, IOException {
    //        System.out.println("ActivityFeedParse.readJson");
    JsonToken curToken = in.nextToken();
    ActivityFeed object = new ActivityFeed();
    while (curToken == JsonToken.FIELD_NAME) {
        String curName = in.getText();
        JsonToken nextToken = in.nextToken();
        if ("items".equals(curName)) {
            ArrayList<Activity> arrayList = new ArrayList<Activity>();
            ActivityParse activityParse = new ActivityParse();
            switch (nextToken) {
            case START_ARRAY:
                while (in.nextToken() != JsonToken.END_ARRAY) {
                    arrayList.add(activityParse.readJson(in));
                }/*  w  w w  .  j ava 2s. c o  m*/
                break;
            case START_OBJECT:
                arrayList.add(activityParse.readJson(in));
                break;
            default:
                throw new IllegalArgumentException(
                        "unexpected JSON node type: " + nextToken + in.getCurrentName());
            }
            object.setActivities(arrayList);
        }
        curToken = in.nextToken();
    }
    return object;
}

From source file:javaslang.jackson.datatype.deserialize.MapDeserializer.java

@Override
public Map<?, ?> deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
    final java.util.List<Tuple2<Object, Object>> result = new java.util.ArrayList<>();
    while (p.nextToken() != JsonToken.END_OBJECT) {
        String name = p.getCurrentName();
        Object key = keyDeserializer.deserializeKey(name, ctxt);
        p.nextToken();/*from  ww  w  .j  a v  a 2  s  . c om*/
        result.add(Tuple.of(key, valueDeserializer.deserialize(p, ctxt)));
    }
    if (TreeMap.class.isAssignableFrom(handledType())) {
        return TreeMap.ofEntries(keyComparator, result);
    }
    if (LinkedHashMap.class.isAssignableFrom(handledType())) {
        return LinkedHashMap.ofEntries(result);
    }
    // default deserialization [...] -> Map
    return HashMap.ofEntries(result);
}

From source file:com.github.jonpeterson.jackson.module.versioning.VersionedModelDeserializer.java

@Override
public T deserialize(JsonParser parser, DeserializationContext context) throws IOException {
    JsonNode jsonNode = parser.readValueAsTree();

    if (!(jsonNode instanceof ObjectNode))
        throw context.mappingException("value must be a JSON object");

    ObjectNode modelData = (ObjectNode) jsonNode;

    JsonNode modelVersionNode = modelData.remove(jsonVersionedModel.propertyName());

    String modelVersion = null;//  w w  w  .j  a  va  2  s .  com
    if (modelVersionNode != null)
        modelVersion = modelVersionNode.asText();

    if (modelVersion == null)
        modelVersion = jsonVersionedModel.defaultDeserializeToVersion();

    if (modelVersion.isEmpty())
        throw context.mappingException("'" + jsonVersionedModel.propertyName()
                + "' property was null and defaultDeserializeToVersion was not set");

    // convert the model if converter specified and model needs converting
    if (converter != null && (jsonVersionedModel.alwaysConvert()
            || !modelVersion.equals(jsonVersionedModel.currentVersion())))
        modelData = converter.convert(modelData, modelVersion, jsonVersionedModel.currentVersion(),
                context.getNodeFactory());

    // set the serializeToVersionProperty value to the source model version if the defaultToSource property is true
    if (serializeToVersionAnnotation != null && serializeToVersionAnnotation.defaultToSource())
        modelData.put(serializeToVersionProperty.getName(), modelVersion);

    JsonParser postInterceptionParser = new TreeTraversingParser(modelData, parser.getCodec());
    postInterceptionParser.nextToken();
    return delegate.deserialize(postInterceptionParser, context);
}

From source file:net.troja.eve.crest.CrestDataProcessor.java

private String processNext(final JsonParser jsonParser) throws IOException {
    String next = null;/*  w w w .  j a  va2 s.  c  o  m*/
    jsonParser.nextToken();
    if (JsonPaths.HREF.equals(jsonParser.getCurrentName())) {
        jsonParser.nextToken();
        next = jsonParser.getText();
        jsonParser.nextToken();
    }
    return next;
}

From source file:ch.rasc.wampspring.message.EventMessage.java

public EventMessage(JsonParser jp, WampSession wampSession) throws IOException {
    super(WampMessageType.EVENT);

    if (jp.nextToken() != JsonToken.VALUE_STRING) {
        throw new IOException();
    }/*from  w w w .  j a  va  2 s.  co  m*/
    setTopicURI(replacePrefix(jp.getValueAsString(), wampSession));

    jp.nextToken();
    this.event = jp.readValueAs(Object.class);
}