java-json

java-json

// use jackson
JsonConverter jsonConverter = new JacksonJsonConverter(new ObjectMapper());

// use gson
JsonConverter jsonConverter = new GsonJsonConverter(new Gson());

public boolean objectToJson() {
    Student student = new Student(1, "aa");
    String json = jsonConverter.toJson(student);
    System.out.println(json);
    assert json.equals("{\"id\":1,\"name\":\"aa\"}");
    return true;
}

public boolean jsonToObject() {
    String json = "{\"id\":1,\"name\":\"aa\"}";
    Student student = jsonConverter.toObject(json, Student.class);
    System.out.println(student);
    assert student != null && student.getId() == 1 && student.getName().equals("aa");
    return true;
}

public boolean listToJson() {
    List<Student> students = Arrays.asList(new Student(1, "aa"), new Student(2, "bb"));
    String json = jsonConverter.toJson(students);
    System.out.println(json);
    assert json.equals("[{\"id\":1,\"name\":\"aa\"},{\"id\":2,\"name\":\"bb\"}]");
    return true;
}

public boolean jsonToList() {
    String json = "[{\"id\":1,\"name\":\"aa\"},{\"id\":2,\"name\":\"bb\"}]";
    List<Student> students = jsonConverter.toObject(json, new ClassNode<>(List.class, Student.class));
    assert students != null && students.size() == 2;
    assert students.get(0).equals(new Student(1, "aa"));
    assert students.get(1).equals(new Student(2, "bb"));
    System.out.println(students);
    return true;
}