jsonparser

Problem Description I'm currently running into a problem where the JSON that I am getting back has fields that are null. In the code below, I've figured out that most of the fields have an assignee, and down another level assignees have a displayName. I've also found out that some things do not have an assignee. When that happens ( and this would probably happen with other fields too, I'm just using this as an example ) it removes that additional heirarchy level, and the actual path ( also shown below ) would be changed. Question Is there an easy way to iterate over this response, and set

需要自定义Jackson序列化和反序列化有两种方式，一种是全局定义，一种是非全局定义。先来看看全局定义。全局定义的步骤如下，以定义一个localDateTime的序列化和反序列化为例： 一、创建序列化类 创建一个序列化类然后继承JsonSerializer，重写serialize序列化方法。其中第一个参数localDateTime为JsonSerializer的泛型，表示的是被序列化的类型的值，第二个参数jsonGenerator表示的是用于输出生成的Json内容，第三个参数暂时没明白什么应用场景。重写方法一般是将想要序列化的字符串传入 jsonGenerator.writeString。 public final class LocalDateTimeSerializer extends JsonSerializer<LocalDateTime> { public static final LocalDateTimeSerializer INSTANCE = new LocalDateTimeSerializer(); public LocalDateTimeSerializer() { } @Override public void serialize(LocalDateTime localDateTime, JsonGenerator jsonGenerator,