Java Code Examples for org.boon.json.ObjectMapper#toJson()

public static void main(String[] args) throws IOException {
    Builder builder = new Builder();
    MetadataImpl metadataImpl = builder.getMetadata();

    JsonSerializerFactory jsonSerializerFactory=new JsonSerializerFactory().usePropertyOnly();
    ObjectMapper mapper = JsonFactory.create(null, jsonSerializerFactory);
    String json = mapper.writeValueAsString(metadataImpl);
    System.out.println("=============" + json);


    File file = new File("metadata.json");
    FileWriter writer = new FileWriter(file);
    mapper.toJson(metadataImpl, writer);
    writer.close();
    Path path = Paths.get(file.toString());
    InputStream inputStream = Files.newInputStream(path);


    MetadataImpl object = JsonFactory.create().readValue(inputStream,
            MetadataImpl.class);
    inputStream.close();

    System.out.println("after deserialization"
            + mapper.writeValueAsString(object));

}
 

@Test
public void testWithMapUsingFactory() {
    JsonParserFactory jsonParserFactory = new JsonParserFactory()
            .useFieldsFirst()
            .lax() //allow loose parsing of JSON like JSON Smart
            .setCharset( StandardCharsets.UTF_8 ) //Set the standard charset, defaults to UTF_8
            .setLazyChop( true ) //similar to chop but only does it after map.get
            ;

    JsonSerializerFactory jsonSerializerFactory = new JsonSerializerFactory()
            .useFieldsFirst() //one of these
                    //.addPropertySerializer(  )  customize property output
                    //.addTypeSerializer(  )      customize type output
            .useJsonFormatForDates() //use json dates
                    //.addFilter(  )   add a property filter to exclude properties
            .includeEmpty().includeNulls().includeDefaultValues() //override defaults
            .handleComplexBackReference() //uses identity map to track complex back reference and avoid them
            .setHandleSimpleBackReference( true ) //looks for simple back reference for parent
            .setCacheInstances( true ) //turns on caching for immutable objects
            ;

    final ObjectMapper objectMapper = JsonFactory.create(jsonParserFactory, jsonSerializerFactory);


    MyClass myClass = new MyClass();
    final String json = objectMapper.toJson(myClass);

    puts(json);

    final MyClass myClass1 = objectMapper.readValue(json, MyClass.class);


    assertEquals("foo", myClass1.string);

    assertEquals(1, myClass1.integer);


    assertNull(myClass1.map);


}
 

public static void main(String[] args) {

            // create object
            MyObject myobject = new MyObject();
            // add a title and attributes
            myobject.setTitle("title with \" double qoutes");
            Map<String,Object> attributes = new HashMap<>();
            attributes.put("author", "author with \" double quotes");
            myobject.setAttrs(attributes);

            // create ObjectMapper
            ObjectMapper mapper = JsonFactory.create();

            // serialize myobject to json
            String myobjectJson = mapper.toJson(myobject);
            System.out.println(myobjectJson);
            // prints: {"title":"title with \" double qoutes","attrs":{"author":"author with \" double quotes"}}
            // parse myobjectJson to an object
            MyObject myobjectParsed = mapper.fromJson(myobjectJson, MyObject.class);

            final boolean equals = myobjectParsed.equals(myobject);

            System.out.println("equals " + equals + " " + myobjectParsed.title);

            System.out.println(myobjectParsed.title);

            System.out.println(myobjectParsed.getAttrs().get("author").getClass().getName());


            puts("\n", myobjectParsed, "\n", myobject);

            // serialize again my myobjectParsed to json
            myobjectJson = mapper.toJson(myobjectParsed);
            System.out.println(myobjectJson);
            // double quoted for attrs are not escaped
            // prints: {"title":"title with \" double qoutes","attrs":{"author":"author with " double quotes"}}


            MyObject myobjectParsed2 = mapper.fromJson(myobjectJson,MyObject.class);
            // Exception in thread "main" org.boon.json.JsonException: expecting current character to be ':' but got '}' with an int value of 125

        }
 

@Test
public void serializingClassFieldCausesSegFault() {

    SomeClass someClassInstance = new SomeClass(Bug287.class);

    ObjectMapper mapper = JsonFactory.create();

    final String json = mapper.toJson(someClassInstance);

    puts(json);

    SomeClass someClassInstance2 = mapper.readValue("{\"clazz\":\"org.boon.bugs.Bug287\"} ", SomeClass.class);

    ok = someClassInstance2.clazz.getName().equals("org.boon.bugs.Bug287");

}
 

@Test
public void test2() {

    Employee employee = new Employee();

    ObjectMapper mapper = JsonFactory.create();

    String json = mapper.toJson(employee);

    puts(json);

    employee.name = "Rick Hightower";

    json = mapper.toJson(employee);

    puts(json);

    employee.birthDate = System.currentTimeMillis() - 60 * 1000 * 24 * 7 * 52 * 29;


    json = mapper.toJson(employee);

    puts(json);

    Employee newEmployee = mapper.fromJson(json, Employee.class);

    puts("New Employee", newEmployee.birthDate, newEmployee.name);


    ok = newEmployee.name.equals("Rick Hightower") && newEmployee.birthDate > 0 || die();

}
 

@Test
public void test3() {

    Employee employee = new Employee();

    ObjectMapper mapper = new ObjectMapperImpl();
    String json = mapper.toJson(employee);

    puts(json);

    employee.name = "Rick Hightower";

    json = mapper.toJson(employee);

    puts(json);

    employee.birthDate = System.currentTimeMillis() - 60 * 1000 * 24 * 7 * 52 * 29;


    json = mapper.toJson(employee);

    puts(json);

    Employee newEmployee = mapper.fromJson(json, Employee.class);

    puts("New Employee", newEmployee.birthDate, newEmployee.name);


    ok = newEmployee.name.equals("Rick Hightower") && newEmployee.birthDate > 0;



}