public void jacksonTest() throws Exception {
JsonFactory factory = new JsonFactory();
StringWriter writer = new StringWriter();
JsonGenerator generator = factory.createJsonGenerator(writer);
generator.writeStartObject();
generator.writeFieldName("bool");
generator.writeBoolean(true);
generator.writeFieldName("firstName");
generator.writeString("john");
generator.writeFieldName("age");
generator.writeNumber(1);
generator.writeFieldName("gg");
generator.writeStartObject();
generator.writeFieldName("firstName");
generator.writeString("john");
generator.writeEndObject();
generator.writeEndObject();
generator.close();
String generated = writer.toString();
System.out.print(generated);
JsonParser parser = factory.createJsonParser(generated);
assertTrue(parser.nextToken() == JsonToken.START_OBJECT);
parser.nextToken();
assertEquals("bool", parser.getCurrentName());
assertTrue(parser.nextToken() == JsonToken.VALUE_TRUE);
parser.nextToken();
assertEquals("firstName", parser.getCurrentName());
parser.nextToken();
assertEquals("john", parser.getText());
parser.nextToken();
assertEquals("age", parser.getCurrentName());
parser.nextToken();
assertTrue(1 == parser.getIntValue());
parser.nextToken();
assertEquals("gg", parser.getCurrentName());
assertTrue(parser.nextToken() == JsonToken.START_OBJECT);
parser.nextToken();
assertEquals("firstName", parser.getCurrentName());
parser.nextToken();
assertEquals("john", parser.getText());
assertTrue(parser.nextToken() == JsonToken.END_OBJECT);
assertTrue(parser.nextToken() == JsonToken.END_OBJECT);
parser.close();
}
private void writeScalarPropertyValue(JsonGenerator jg, Type type, Object value)
throws IOException {
if (value == null) {
jg.writeNull();
} else if (type instanceof BooleanType) {
jg.writeBoolean((Boolean) value);
} else if (type instanceof LongType) {
jg.writeNumber((Long) value);
} else if (type instanceof DoubleType) {
jg.writeNumber((Double) value);
} else if (type instanceof IntegerType) {
jg.writeNumber((Integer) value);
} else if (type instanceof BinaryType) {
jg.writeBinary((byte[]) value);
} else {
jg.writeString(type.encode(value));
}
}