小编lub*_*b0v的帖子

我有几个包含彼此递归依赖的类,我使用Gson GraphAdapterBuilder将它们序列化为JSON格式,它完美地运行.现在我想将它们反序列化为相同的结构,但无法找到方法.

我做了一个例子:

class ClassA{
    public int field;
    public ClassB parent;
    public ClassA(int f, ClassB p){
        field = f;
        parent = p;
    }
}

class ClassB{
    public Vector<ClassA> vector = new Vector<ClassA>();
}

...

ClassB b = new ClassB();        

ClassA a1 = new ClassA(1,b);
ClassA a2 = new ClassA(2,b);
ClassA a3 = new ClassA(3,b);

b.vector.add(a1);
b.vector.add(a2);
b.vector.add(a3);

//Serializing object b

GsonBuilder gsonBuilder = new GsonBuilder();

new GraphAdapterBuilder()
    .addType(ClassA.class)
    .addType(ClassB.class)
    .registerOn(gsonBuilder);

Gson gson = gsonBuilder.create();

String json = gson.toJson(b);

输出给了我想要的东西:

{"0x1":{"vector":["0x2","0x3","0x4"]},"0x2":{"field":1,"parent":"0x1"},"0x3":{"field":2,"parent":"0x1"},"0x4":{"field":3,"parent":"0x1"}} …

几天来，我一直在寻找“如何在运行时向方法添加注释”的答案，并找到了这个名为 Byte Buddy 的很棒的工具，使用了它，但仍然无法按我的需要工作。我确定它必须能够从这个问题Can Byte Buddy create fields and method annotations at runtime?

有这个类：

public class ClassThatNeedsToBeAnnotated {
  public void method(int arg1, String arg2) {
    // code that we don't want to touch at all, leave it as is
    System.out.println("Called method with arguments " + arg1 + " " + arg2);
  }

  public void method() {
    System.out.println("Called method without arguments");
  }
}

和这个代码：

 public class MainClass {
      public static void main(String[] args) {
        ByteBuddyAgent.install();

        AnnotationDescription description = AnnotationDescription.Builder.ofType(MyClassAnnotation.class)
            .define("value", …