/** 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();
}
}
// [JACKSON-212]
public void testToStringEnumWithEnumMap() throws Exception {
ObjectMapper m = new ObjectMapper();
m.configure(SerializationFeature.WRITE_ENUMS_USING_TO_STRING, true);
EnumMap<LowerCaseEnum, String> enums = new EnumMap<LowerCaseEnum, String>(LowerCaseEnum.class);
enums.put(LowerCaseEnum.C, "value");
assertEquals("{\"c\":\"value\"}", m.writeValueAsString(enums));
}
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());
}
// [Issue#227]
public void testGenericEnumSerializer() throws Exception {
// By default, serialize using name
ObjectMapper m = new ObjectMapper();
SimpleModule module = new SimpleModule("foobar");
module.addSerializer(Enum.class, new LowerCasingEnumSerializer());
m.registerModule(module);
assertEquals(quote("b"), m.writeValueAsString(TestEnum.B));
}
// [JACKSON-684]
public void testAsIndex() throws Exception {
// By default, serialize using name
ObjectMapper m = new ObjectMapper();
assertFalse(m.isEnabled(SerializationFeature.WRITE_ENUMS_USING_INDEX));
assertEquals(quote("B"), m.writeValueAsString(TestEnum.B));
// but we can change (dynamically, too!) it to be number-based
m.enable(SerializationFeature.WRITE_ENUMS_USING_INDEX);
assertEquals("1", m.writeValueAsString(TestEnum.B));
}
// Test for [JACKSON-554]
public void testTreeToValue() throws Exception {
String JSON = "{\"leaf\":{\"value\":13}}";
ObjectMapper mapper = new ObjectMapper();
mapper.addMixInAnnotations(Leaf.class, LeafMixIn.class);
JsonNode root = mapper.readTree(JSON);
// Ok, try converting to bean using two mechanisms
Root r1 = mapper.treeToValue(root, Root.class);
assertNotNull(r1);
assertEquals(13, r1.leaf.value);
}
// [Issue#232]
public void testBigDecimalAsPlainStringTreeConversion() throws Exception {
ObjectMapper mapper = new ObjectMapper();
mapper.enable(SerializationFeature.WRITE_BIGDECIMAL_AS_PLAIN);
Map<String, Object> map = new HashMap<String, Object>();
String PI_STR = "3.00000000";
map.put("pi", new BigDecimal(PI_STR));
JsonNode tree = mapper.valueToTree(map);
assertNotNull(tree);
assertEquals(1, tree.size());
assertTrue(tree.has("pi"));
}
// [JACKSON-212]
public void testToStringEnum() throws Exception {
ObjectMapper m = new ObjectMapper();
m.configure(SerializationFeature.WRITE_ENUMS_USING_TO_STRING, true);
assertEquals("\"b\"", m.writeValueAsString(LowerCaseEnum.B));
// [databind#749] but should also be able to dynamically disable
assertEquals(
"\"B\"",
m.writer()
.without(SerializationFeature.WRITE_ENUMS_USING_TO_STRING)
.writeValueAsString(LowerCaseEnum.B));
}
/**
* Simple test to verify that byte[] values can be handled properly when converting, as long as
* there is metadata (from POJO definitions).
*/
public void testIssue709() throws Exception {
byte[] inputData = new byte[] {1, 2, 3};
ObjectNode node = MAPPER.createObjectNode();
node.put("data", inputData);
Issue709Bean result = MAPPER.treeToValue(node, Issue709Bean.class);
String json = MAPPER.writeValueAsString(node);
Issue709Bean resultFromString = MAPPER.readValue(json, Issue709Bean.class);
Issue709Bean resultFromConvert = MAPPER.convertValue(node, Issue709Bean.class);
// all methods should work equally well:
Assert.assertArrayEquals(inputData, resultFromString.data);
Assert.assertArrayEquals(inputData, resultFromConvert.data);
Assert.assertArrayEquals(inputData, result.data);
}
// [databind#601]
public void testEnumsWithJsonValueInMap() throws Exception {
EnumMap<EnumWithJsonValue, String> input =
new EnumMap<EnumWithJsonValue, String>(EnumWithJsonValue.class);
input.put(EnumWithJsonValue.B, "x");
assertEquals(
"{\"" + EnumWithJsonValue.B.toString() + "\":\"x\"}", mapper.writeValueAsString(input));
}
public static String toJson(Object value) {
try {
return OBJECT_MAPPER.writer().writeValueAsString(value);
} catch (JsonProcessingException e) {
throw new IllegalArgumentException("Unable to serialize to json", e);
}
}
public void testBinary() throws Exception {
ObjectMapper mapper = new ObjectMapper();
final int LENGTH = 13045;
byte[] data = new byte[LENGTH];
for (int i = 0; i < LENGTH; ++i) {
data[i] = (byte) i;
}
StringWriter sw = new StringWriter();
mapper.writeValue(sw, BinaryNode.valueOf(data));
JsonParser p = new JsonFactory().createParser(sw.toString());
// note: can't determine it's binary from json alone:
assertToken(JsonToken.VALUE_STRING, p.nextToken());
assertArrayEquals(data, p.getBinaryValue());
p.close();
}
public static <T> T fromJson(String json, Class<T> type) {
try {
return OBJECT_MAPPER.readValue(json, type);
} catch (IOException e) {
throw new IllegalArgumentException("Unable to parse json", e);
}
}
public static byte[] toByteArray(Object value) {
try {
return OBJECT_MAPPER.writer().writeValueAsBytes(value);
} catch (JsonProcessingException e) {
throw new IllegalArgumentException("Unable to serialize to json", e);
}
}
@Override
public Record deserialize(InputStream in) throws RecordSerializationException {
ObjectMapper mapper = new ObjectMapper();
SimpleModule module = new SimpleModule();
module.addDeserializer(Record.class, new EventDeserializer());
mapper.registerModule(module);
Record record = null;
try {
record = mapper.readValue(in, Record.class);
} catch (IOException e) {
e.printStackTrace();
}
return record;
}
public void testEmbeddedObject() throws Exception {
TokenBuffer buf = new TokenBuffer(MAPPER);
buf.writeObject(new byte[3]);
JsonNode node = MAPPER.readTree(buf.asParser());
buf.close();
assertTrue(node.isBinary());
byte[] data = node.binaryValue();
assertNotNull(data);
assertEquals(3, data.length);
}
public void testEmbeddedObjectInArray() throws Exception {
TokenBuffer buf = new TokenBuffer(MAPPER);
buf.writeStartArray();
buf.writeObject(MARKER);
buf.writeEndArray();
JsonNode node = MAPPER.readTree(buf.asParser());
buf.close();
assertTrue(node.isArray());
assertEquals(1, node.size());
JsonNode n = node.get(0);
assertTrue(n.isPojo());
assertSame(MARKER, ((POJONode) n).getPojo());
}
@Override
public void serialize(OutputStream out, Record record) throws RecordSerializationException {
ObjectMapper mapper = new ObjectMapper();
SimpleModule module = new SimpleModule();
module.addSerializer(StandardRecord.class, new EventSerializer());
mapper.registerModule(module);
// map json to student
try {
mapper.enable(SerializationFeature.INDENT_OUTPUT);
mapper.setPropertyNamingStrategy(
PropertyNamingStrategy.CAMEL_CASE_TO_LOWER_CASE_WITH_UNDERSCORES);
String jsonString = mapper.writeValueAsString(record);
out.write(jsonString.getBytes());
out.flush();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws Exception {
if (args.length != 1) {
System.err.println("Usage: java [input]");
System.exit(1);
}
byte[] data = readAll(args[0]);
JsonFactory f = new JsonFactory();
boolean doIntern = true;
f.configure(JsonFactory.Feature.CANONICALIZE_FIELD_NAMES, doIntern);
f.configure(JsonFactory.Feature.INTERN_FIELD_NAMES, doIntern);
ObjectMapper m = new ObjectMapper();
Object input1 = m.readValue(data, Object.class);
JsonNode input2 = m.readTree(data);
new ManualReadPerfUntypedStream()
.testFromBytes(
// .testFromString(
m, "JSON-as-Object", input1, Object.class, m, "JSON-as-Object2", input2, Object.class
// ,m, "JSON-as-Node", input2, JsonNode.class
);
}
public static <T> T convertValue(Object value, Class<T> type) {
return OBJECT_MAPPER.convertValue(value, type);
}
/**
* Test for ensuring that @JsonSerializable is used with Enum types as well as with any other
* types.
*/
public void testSerializableEnum() throws Exception {
assertEquals("\"foo\"", mapper.writeValueAsString(SerializableEnum.A));
}
// [JACKSON-576]
public void testMapWithEnumKeys() throws Exception {
MapBean bean = new MapBean();
bean.add(TestEnum.B, 3);
String json = mapper.writeValueAsString(bean);
assertEquals("{\"map\":{\"b\":3}}", json);
}
public void testEnumAsIndexViaAnnotations() throws Exception {
assertEquals("{\"text\":0}", mapper.writeValueAsString(new PoNUMContainer()));
}
// [databind#661]
public void testCustomEnumMapKeySerializer() throws Exception {
String json = mapper.writeValueAsString(new MyBean661("abc"));
assertEquals(aposToQuotes("{'X-FOO':'abc'}"), json);
}
// [databind#594]
public void testJsonValueForEnumMapKey() throws Exception {
assertEquals(
aposToQuotes("{'stuff':{'longValue':'foo'}}"),
mapper.writeValueAsString(new MyStuff594("foo")));
}
public void testOverrideEnumAsNumber() throws Exception {
assertEquals("{\"value\":1}", mapper.writeValueAsString(new PoOverrideAsNumber()));
}
// As of 2.5, use of Shape.ARRAY is legal alias for "write as number"
public void testEnumAsObjectBroken() throws Exception {
assertEquals("0", mapper.writeValueAsString(PoAsArray.A));
}
// [JACKSON-757]
public void testAnnotationsOnEnumCtor() throws Exception {
assertEquals(quote("V1"), mapper.writeValueAsString(OK.V1));
assertEquals(quote("V1"), mapper.writeValueAsString(NOT_OK.V1));
assertEquals(quote("V2"), mapper.writeValueAsString(NOT_OK2.V2));
}
public void testEnumAsObjectValid() throws Exception {
assertEquals("{\"value\":\"a1\"}", mapper.writeValueAsString(PoNUM.A));
}