问在GAE上是否有Restlet的开源项目？

EN

public Foo() {

    private String name;

    public Foo() {};

    public Foo(String name) {
        this.name = name;
    }

    public String toJson() {
        return new Gson().toJson(this);
    }
}

@Get("json")
public Representation represent() {

    Foo foo = new Foo("bar");
    return new JsonRepresentation(foo.toJson());

}

@Post("json")
public Representation post(Representation entity) {

    JsonRepresentation json = null;

    try {

        json = new JsonRepresentation(entity);
        Gson gson = new Gson();
        Foo foo = gson.fromJson(json.getText(), Foo.class);

    } catch (Exception e) {
        System.err.println(e.getMessage());
    }

    return json;
}