/** Unit test to check for regression of [JACKSON-18]. */
public void testSmallNumbers() throws Exception {
ObjectMapper mapper = new ObjectMapper();
ArrayNode root = mapper.createArrayNode();
for (int i = -20; i <= 20; ++i) {
JsonNode n = root.numberNode(i);
root.add(n);
// Hmmh. Not sure why toString() won't be triggered otherwise...
assertEquals(String.valueOf(i), n.toString());
}
// Loop over 2 different serialization methods
for (int type = 0; type < 2; ++type) {
StringWriter sw = new StringWriter();
if (type == 0) {
JsonGenerator gen = new JsonFactory().createGenerator(sw);
root.serialize(gen, null);
gen.close();
} else {
mapper.writeValue(sw, root);
}
String doc = sw.toString();
JsonParser p = new JsonFactory().createParser(new StringReader(doc));
assertEquals(JsonToken.START_ARRAY, p.nextToken());
for (int i = -20; i <= 20; ++i) {
assertEquals(JsonToken.VALUE_NUMBER_INT, p.nextToken());
assertEquals(i, p.getIntValue());
assertEquals("" + i, p.getText());
}
assertEquals(JsonToken.END_ARRAY, p.nextToken());
p.close();
}
}
public static String objectToJson(Object object) {
JsonGenerator jsonGenerator = null;
ObjectMapper objectMapper = new ObjectMapper();
ByteArrayOutputStream out = null;
String json = null;
try {
try {
String jsonStr = "";
out = new ByteArrayOutputStream();
jsonGenerator = objectMapper.getFactory().createGenerator(out, JsonEncoding.UTF8);
jsonGenerator.writeObject(object);
json = new String(out.toByteArray(), Charset.forName("UTF-8"));
out.toString();
System.out.println(json);
} finally {
if (jsonGenerator != null) {
jsonGenerator.flush();
}
if (!jsonGenerator.isClosed()) {
jsonGenerator.close();
}
if (out != null) {
out.close();
}
jsonGenerator = null;
objectMapper = null;
}
} catch (Exception e) {
}
return json;
}
public void testFromMap() throws Exception {
ObjectMapper mapper = new ObjectMapper();
ObjectNode root = mapper.createObjectNode();
root.put(FIELD4, TEXT2);
root.put(FIELD3, -1);
root.putArray(FIELD2);
root.put(FIELD1, DOUBLE_VALUE);
/* Let's serialize using one of two alternate methods:
* first preferred (using generator)
* (there are 2 variants here too)
*/
for (int i = 0; i < 2; ++i) {
StringWriter sw = new StringWriter();
if (i == 0) {
JsonGenerator gen = new JsonFactory().createGenerator(sw);
root.serialize(gen, null);
gen.close();
} else {
mapper.writeValue(sw, root);
}
verifyFromMap(sw.toString());
}
// And then convenient but less efficient alternative:
verifyFromMap(root.toString());
}
public void testFromArray() throws Exception {
ObjectMapper mapper = new ObjectMapper();
ArrayNode root = mapper.createArrayNode();
root.add(TEXT1);
root.add(3);
ObjectNode obj = root.addObject();
obj.put(FIELD1, true);
obj.putArray(FIELD2);
root.add(false);
/* Ok, ready... let's serialize using one of two alternate
* methods: first preferred (using generator)
* (there are 2 variants here too)
*/
for (int i = 0; i < 2; ++i) {
StringWriter sw = new StringWriter();
if (i == 0) {
JsonGenerator gen = new JsonFactory().createGenerator(sw);
root.serialize(gen, null);
gen.close();
} else {
mapper.writeValue(sw, root);
}
verifyFromArray(sw.toString());
}
// And then convenient but less efficient alternative:
verifyFromArray(root.toString());
}
/**
* Helper method used when value to serialize is {@link Closeable} and its <code>close()</code>
* method is to be called right after serialization has been called
*/
private final void _writeCloseable(JsonGenerator jgen, Object value, SerializationConfig cfg)
throws IOException, JsonGenerationException, JsonMappingException {
Closeable toClose = (Closeable) value;
try {
if (_rootType == null) {
_serializerProvider(cfg).serializeValue(jgen, value);
} else {
_serializerProvider(cfg).serializeValue(jgen, value, _rootType, _rootSerializer);
}
JsonGenerator tmpJgen = jgen;
jgen = null;
tmpJgen.close();
Closeable tmpToClose = toClose;
toClose = null;
tmpToClose.close();
} finally {
/* Need to close both generator and value, as long as they haven't yet
* been closed
*/
if (jgen != null) {
try {
jgen.close();
} catch (IOException ioe) {
}
}
if (toClose != null) {
try {
toClose.close();
} catch (IOException ioe) {
}
}
}
}
/** Method called to configure the generator as necessary and then call write functionality */
protected final void _configAndWriteValue(JsonGenerator jgen, Object value)
throws IOException, JsonGenerationException, JsonMappingException {
_configureJsonGenerator(jgen);
// [JACKSON-282]: consider Closeable
if (_config.isEnabled(SerializationFeature.CLOSE_CLOSEABLE) && (value instanceof Closeable)) {
_writeCloseable(jgen, value, _config);
return;
}
boolean closed = false;
try {
if (_rootType == null) {
_serializerProvider(_config).serializeValue(jgen, value);
} else {
_serializerProvider(_config).serializeValue(jgen, value, _rootType, _rootSerializer);
}
closed = true;
jgen.close();
} finally {
/* won't try to close twice; also, must catch exception (so it
* will not mask exception that is pending)
*/
if (!closed) {
try {
jgen.close();
} catch (IOException ioe) {
}
}
}
}
private void writeSupportedProperty(
JsonGenerator jgen,
String currentVocab,
ActionInputParameter actionInputParameter,
String propertyName,
Property property,
@SuppressWarnings("unused") Object[] possiblePropertyValues)
throws IOException {
jgen.writeStartObject();
if (actionInputParameter.hasCallValue() || actionInputParameter.hasInputConstraints()) {
// jgen.writeArrayFieldStart("@type");
// jgen.writeString("hydra:SupportedProperty");
jgen.writeStringField(
JsonLdKeywords.AT_TYPE,
getPropertyOrClassNameInVocab(
currentVocab,
"PropertyValueSpecification",
LdContextFactory.HTTP_SCHEMA_ORG,
"schema:"));
// jgen.writeEndArray();
}
jgen.writeStringField("hydra:property", propertyName);
writePossiblePropertyValues(jgen, currentVocab, actionInputParameter, possiblePropertyValues);
jgen.writeEndObject();
}
@Test
public void test1() throws IOException {
MapData ld0 = new MapData();
ld0.put("Copyright", "\u00A9 2014, David R. Smith. All Rights Reserved");
ld0.put("License", "http://www.apache.org/licenses/LICENSE-2.0.txt");
MapData ld1 = new MapData();
ld1.put("some key", "some data");
ld1.put("another key", "more data");
MapDataFormatter format = new MapDataFormatter();
format.add(ld0);
format.add(ld1);
StringWriter writer = new StringWriter();
JsonFactory f = new JsonFactory();
JsonGenerator g = null;
try {
g = f.createGenerator(writer);
g.useDefaultPrettyPrinter();
g.writeStartObject();
format.format(g, writer);
g.writeEndObject();
} finally {
g.close();
}
System.err.println(writer.toString());
MapIterator iter3 = new MapDataContentsIterator(ld0);
while (iter3.hasNext()) {
String label = iter3.next();
Assert.assertNotNull(iter3.get(label));
}
}
private void writeApplication(JsonGenerator jgen, Application application) throws IOException {
jgen.writeStartObject();
jgen.writeStringField("applicationName", application.getName());
jgen.writeStringField("serviceType", application.getServiceType().getDesc());
jgen.writeNumberField("code", application.getServiceTypeCode());
jgen.writeEndObject();
}
public static String dumpConfigurationAsJson() {
ImmutableCollection<String> keys = CONFIGURATION_SECTIONS.keySet();
ObjectMapper mapper = new ObjectMapper();
JsonFactory jfactory = mapper.getJsonFactory();
StringWriter sw = new StringWriter();
try {
JsonGenerator gen = jfactory.createJsonGenerator(sw);
gen.writeStartArray();
for (String v : keys) {
String st = dumpConfigurationAsJson(v);
ObjectMapper op = new ObjectMapper();
JsonNode p = op.readTree(st);
Logger.debug("OBJECT:" + p.toString());
Logger.debug("STRING:" + st);
// JsonParser jp = jfactory.createJsonParser(st);
gen.writeTree(p);
}
gen.writeEndArray();
gen.close();
return sw.toString();
} catch (Exception e) {
Logger.error("Cannot generate a json for the configuration", e);
}
return "[]";
} // dumpConfigurationAsJson()
@Override
protected void renderMergedOutputModel(
Map<String, Object> model, HttpServletRequest request, HttpServletResponse response)
throws Exception {
OutputStream stream =
this.updateContentLength ? createTemporaryOutputStream() : response.getOutputStream();
Object value = filterModel(model);
JsonGenerator generator =
this.objectMapper.getJsonFactory().createJsonGenerator(stream, this.encoding);
// A workaround for JsonGenerators not applying serialization features
// https://github.com/FasterXML/jackson-databind/issues/12
if (this.objectMapper.isEnabled(SerializationFeature.INDENT_OUTPUT)) {
generator.useDefaultPrettyPrinter();
}
if (this.prefixJson) {
generator.writeRaw("{} && ");
}
this.objectMapper.writeValue(generator, value);
if (this.updateContentLength) {
writeToResponse(response, (ByteArrayOutputStream) stream);
}
}
public void writeServiceDocument(final JsonGenerator gen) throws IOException {
gen.writeStartObject();
if (!isODataMetadataNone) {
final String metadataUri =
(serviceRoot == null ? "" : serviceRoot.endsWith("/") ? serviceRoot : (serviceRoot + "/"))
+ Constants.METADATA;
gen.writeObjectField(Constants.JSON_CONTEXT, metadataUri);
if (metadata != null
&& metadata.getServiceMetadataETagSupport() != null
&& metadata.getServiceMetadataETagSupport().getMetadataETag() != null) {
gen.writeStringField(
Constants.JSON_METADATA_ETAG,
metadata.getServiceMetadataETagSupport().getMetadataETag());
}
}
gen.writeArrayFieldStart(Constants.VALUE);
final EdmEntityContainer container = metadata.getEdm().getEntityContainer();
writeEntitySets(gen, container);
writeFunctionImports(gen, container);
writeSingletons(gen, container);
}
@Override
public void serialize(IndexInput input, JsonGenerator jg, SerializerProvider sp)
throws IOException {
jg.writeStartObject();
// Riak bug ... explicitly specifying "default" as the type breaks things
if (!input.getNamespace().getBucketTypeAsString().equals(Namespace.DEFAULT_BUCKET_TYPE)) {
jg.writeArrayFieldStart("bucket");
jg.writeString(input.getNamespace().getBucketTypeAsString());
jg.writeString(input.getNamespace().getBucketNameAsString());
jg.writeEndArray();
} else {
jg.writeStringField("bucket", input.getNamespace().getBucketNameAsString());
}
jg.writeStringField("index", input.getIndex());
IndexInput.IndexCriteria criteria = input.getCriteria();
if (criteria instanceof IndexInput.MatchCriteria) {
IndexInput.MatchCriteria<?> match = (IndexInput.MatchCriteria) criteria;
jg.writeObjectField("key", match.getValue());
} else if (criteria instanceof IndexInput.RangeCriteria) {
IndexInput.RangeCriteria range = (IndexInput.RangeCriteria) criteria;
jg.writeObjectField("start", range.getBegin());
jg.writeObjectField("end", range.getEnd());
}
jg.writeEndObject();
}
/**
* Method that will handle serialization of Date(-like) values, using {@link SerializationConfig}
* settings to determine expected serialization behavior. Note: date here means "full" date, that
* is, date AND time, as per Java convention (and not date-only values like in SQL)
*/
public final void defaultSerializeDateValue(Date date, JsonGenerator gen) throws IOException {
if (isEnabled(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)) {
gen.writeNumber(date.getTime());
} else {
gen.writeString(_dateFormat().format(date));
}
}
@Test
public void testCreateGenerator() throws Exception {
EbeanServer server = Ebean.getDefaultServer();
StringWriter writer = new StringWriter();
JsonContext json = server.json();
JsonGenerator generator = json.createGenerator(writer);
Customer customer = new Customer();
customer.setId(1);
customer.setName("Jim");
// we can use the generator before and after our json.toJson() call
// ... confirming we are not closing the generator
generator.writeStartArray();
json.toJson(customer, generator, PathProperties.parse("id,name"));
generator.writeEndArray();
generator.close();
String jsonString = writer.toString();
assertTrue(jsonString, jsonString.startsWith("["));
assertTrue(jsonString, jsonString.endsWith("]"));
assertTrue(jsonString, jsonString.contains("{\"id\":1,\"name\":\"Jim\"}"));
}
public void jsonSerializeTree(final ObjectMapper mapper, final OutputStream output)
throws IOException {
final JsonGenerator generator = mapper.getFactory().createJsonGenerator(output);
generator.configure(JsonGenerator.Feature.AUTO_CLOSE_TARGET, false);
walkTree(
new WalkCallback() {
private int curDepth = 0;
@Override
public void onCurrentNode(
final int depth, final NodeInterval curNode, final NodeInterval parent) {
final ItemsNodeInterval node = (ItemsNodeInterval) curNode;
if (node.isRoot()) {
return;
}
try {
if (curDepth < depth) {
generator.writeStartArray();
curDepth = depth;
} else if (curDepth > depth) {
generator.writeEndArray();
curDepth = depth;
}
generator.writeObject(node);
} catch (IOException e) {
throw new RuntimeException("Failed to deserialize tree", e);
}
}
});
generator.close();
}
public String serializeMap(Map<String, T> translator) throws IOException {
StringWriter stringWriter = new StringWriter();
JsonGenerator generator = Acela.JSON_FACTORY.createGenerator(stringWriter);
serializeMap(generator, translator);
generator.close();
return stringWriter.toString();
}
protected String writeTree(TreeCodec treeCodec, TreeNode treeNode) throws IOException {
StringWriter writer = new StringWriter();
JsonGenerator g = _factory.createGenerator(writer);
treeCodec.writeTree(g, treeNode);
g.close();
return writer.toString();
}
/**
* Method that will handle serialization of Dates used as {@link java.util.Map} keys, based on
* {@link SerializationFeature#WRITE_DATE_KEYS_AS_TIMESTAMPS} value (and if using textual
* representation, configured date format)
*/
public void defaultSerializeDateKey(Date date, JsonGenerator gen) throws IOException {
if (isEnabled(SerializationFeature.WRITE_DATE_KEYS_AS_TIMESTAMPS)) {
gen.writeFieldName(String.valueOf(date.getTime()));
} else {
gen.writeFieldName(_dateFormat().format(date));
}
}
public void testUtf8Issue462() throws Exception {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
IOContext ioc = new IOContext(new BufferRecycler(), bytes, true);
JsonGenerator gen = new UTF8JsonGenerator(ioc, 0, null, bytes);
String str = "Natuurlijk is alles gelukt en weer een tevreden klant\uD83D\uDE04";
int length = 4000 - 38;
for (int i = 1; i <= length; ++i) {
gen.writeNumber(1);
}
gen.writeString(str);
gen.flush();
gen.close();
// Also verify it's parsable?
JsonFactory f = new JsonFactory();
JsonParser p = f.createParser(bytes.toByteArray());
for (int i = 1; i <= length; ++i) {
assertToken(JsonToken.VALUE_NUMBER_INT, p.nextToken());
assertEquals(1, p.getIntValue());
}
assertToken(JsonToken.VALUE_STRING, p.nextToken());
assertEquals(str, p.getText());
assertNull(p.nextToken());
p.close();
}
@Override
public void serialize(Object value, JsonGenerator jgen, SerializerProvider provider)
throws IOException, JsonGenerationException {
if (value instanceof Number) {
jgen.writeString("0");
}
jgen.writeString("");
}
/**
* Method called after an object field has been output, but before the value is output.
*
* <p>Default handling (without pretty-printing) will output a single colon to separate the two.
* Pretty-printer is to output a colon as well, but can surround that with other (white-space)
* decoration.
*/
@Override
public void writeObjectFieldValueSeparator(JsonGenerator jg) throws IOException {
if (_spacesInObjectEntries) {
jg.writeRaw(" : ");
} else {
jg.writeRaw(':');
}
}
@Override
public void serialize(Player player, JsonGenerator jgen, SerializerProvider provider)
throws IOException, JsonProcessingException {
jgen.writeStartObject();
writeNumberField(jgen, "id", player.getId());
writeStringField(jgen, "username", player.getUser().getUsername());
jgen.writeEndObject();
}
@Override
public void serialize(
UserStatus userStatus, JsonGenerator jsonGenerator, SerializerProvider serializerProvider)
throws IOException {
if (UserStatus.FOLLOWED == userStatus) jsonGenerator.writeNumber(1);
if (UserStatus.SUSPEND == userStatus) jsonGenerator.writeNumber(2);
if (UserStatus.UN_FOLLOWED == userStatus) jsonGenerator.writeNumber(4);
}
@Override
public final byte[] serialize(MediaContent content) throws IOException {
ByteArrayOutputStream baos = outputStream(content);
JsonGenerator generator = constructGenerator(baos);
writeMediaContent(generator, content);
generator.close();
return baos.toByteArray();
}
protected void writeContent(OutputStream stream, Object content) throws IOException {
JsonGenerator generator = this.objectMapper.getFactory().createGenerator(stream, this.encoding);
this.objectMapper.writeValue(generator, content);
generator.flush();
}
@Override
public void serialize(Link link, JsonGenerator jg, SerializerProvider sp)
throws IOException, JsonProcessingException {
jg.writeStartObject();
jg.writeStringField("href", link.getUri().toString());
jg.writeEndObject();
}
/**
* Method that will handle serialization of Date(-like) values, using {@link SerializationConfig}
* settings to determine expected serialization behavior. Note: date here means "full" date, that
* is, date AND time, as per Java convention (and not date-only values like in SQL)
*/
public final void defaultSerializeDateValue(long timestamp, JsonGenerator gen)
throws IOException {
if (isEnabled(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)) {
gen.writeNumber(timestamp);
} else {
gen.writeString(_dateFormat().format(new Date(timestamp)));
}
}
private void writeArray(JsonGenerator jsonGenerator, Iterable<?> value, Deque<Object> objectStack)
throws IOException {
jsonGenerator.writeStartArray();
for (Object item : value) {
writeFieldValue(jsonGenerator, item, objectStack);
}
jsonGenerator.writeEndArray();
}
public static void toJson(Object pojo, FileWriter fw, boolean prettyPrint)
throws JsonMappingException, JsonGenerationException, IOException {
JsonGenerator jg = jf.createGenerator(fw);
if (prettyPrint) {
jg.useDefaultPrettyPrinter();
}
m.writeValue(jg, pojo);
}