由于自引用循环，C# 无法序列化我的对象

Question

我正在制作一个图书馆系统和类设计(https://i.sstatic.net/5HlUf. png) 已提供给我们。 这些是我的课程，并且都具有彼此的列表引用。当我尝试序列化它们时，我遇到了自引用循环异常。我明白问题存在的原因，只是不知道如何解决。

 class Author
    {
        public Author(int AuthorID, string Name, int YearOfBirth, List<Book> Books,string Country)
        {
            this.AuthorID = AuthorID;
            this.Name = Name;
            this.YearOfBirth = YearOfBirth;
            this.Books = Books;
            this.Country = Country;
        }
        public int AuthorID { get; private set; }
        public string Name { get; private set; }
        public int YearOfBirth { get; private set; }
        //[JsonIgnore]
        public List<Book> Books { get; private set; }
        public string Country { get; private set; }
       
    }

class Book
    {
        public Book() { }
        public Book(int ISBN, string Title, string Genre, List<Author> Authors, int Year, string Description)
        {
            this.ISBN = ISBN;
            this.Title = Title;
            this.Genre = Genre;
            this.Authors = Authors;
            this.Year = Year;
            this.Description = Description;
        }
        
        public int ISBN { get; private set; }
        public string Title { get; private set; }
        public string Genre { get; private set; }
        //[JsonIgnore]
        public List<Author> Authors { get; private set; }
        public int Year { get; private set; }
        public string Description { get; private set; }
    ```


  [1]: https://i.sstatic.net/5HlUf.png

Answer 1

您可以在序列化时使用ReferenceLoopHandling.Ignore 忽略自引用循环，如果对象是其自身的子对象，则不会序列化该对象。您可以通过将其添加到序列化器设置中来使用它：

JsonConvert.SerializeObject(Author, Formatting.Indented, new JsonSerializerSettings { ReferenceLoopHandling = ReferenceLoopHandling.Ignore});