英文:
Hide ManyToOne field in REST API in Spring Boot
问题
我在服务器上使用Spring Boot创建了一个简单的REST API。我有两个资源：用户（users）和文章（articles）。以下是Article类的代码：
@Entity(name = "article")public class Article {@Id@GeneratedValue(strategy = GenerationType.IDENTITY)private int id;@Column(nullable = false)private String text;@ManyToOne(fetch = FetchType.LAZY)private User user;public User getUser() { // 我需要这个方法。return user;}// 其他所有的setter和getter方法。}
现在，如果我通过REST API根据文章的ID获取一些文章，响应如下：
{"id": 5,"text": "文章的内容...","user": {"id": 1,"username": "user@email.com","password": "$2a$10$CbsH93d8s5NX6Gx/N5zcwemUJ7YXXjRIQAE2InW9zyHlcTh6zWrua"}}
如何从响应中排除user字段？如果我删除Article.getUser方法，一切都正常工作，响应如下：
{"id": 5,"text": "文章的内容..."}
这是期望的结果。然而，我需要Article.getUser方法，因为例如，如果有人想要删除文章，我需要检查请求的作者是否是文章的作者，以便用户不能删除其他用户的文章。
英文:
I am using Spring Boot with simple REST API on server. I have 2 resources: users and articles. Here is Article class:
@Entity(name = "article")public class Article {@Id@GeneratedValue(strategy = GenerationType.IDENTITY)private int id;@Column(nullable = false)private String text;@ManyToOne(fetch = FetchType.LAZY)private User user;public User getUser() { // I need this method.return user;}// All other setters and getters.}
Now, if I fetch some article by its ID using REST API, response looks like:
{"id": 5,"text": "Content of article...","user": {"id": 1,"username": "user@email.com","password": "$2a$10$CbsH93d8s5NX6Gx/N5zcwemUJ7YXXjRIQAE2InW9zyHlcTh6zWrua"}}
How can I exclude user field from response? If I remove Article.getUser method, everything works fine and response looks like:
{"id": 5,"text": "Content of article..."}
This is desired result. However, I need Article.getUser, because e. g. if someone want delete article, I need check, if author of the request is author of the article, so user cannot delete articles of other users.
答案1
得分: 0
你可以在代码中使用 @JsonIgnore，如下所示：
@JsonIgnoreprivate User user;
另一种方法是使用 Projection，通过它你可以更精确地控制响应中应包含的内容。
英文:
You can use @JsonIgnore on like below:
@JsonIgnoreprivate User user;
The other way is Projection in which you have more control on what should be included in response.
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