Jackson JSON

Spring 为 Jackson JSON 库提供支持。

JSON 视图

Spring WebFlux 提供对 Jackson 序列化视图 的内置支持,它允许仅呈现 Object 中所有字段的子集。要将其与 @ResponseBodyResponseEntity 控制器方法一起使用,可以使用 Jackson 的 @JsonView 注解来激活序列化视图类,如下例所示

  • Java

  • Kotlin

@RestController
public class UserController {

	@GetMapping("/user")
	@JsonView(User.WithoutPasswordView.class)
	public User getUser() {
		return new User("eric", "7!jd#h23");
	}
}

public class User {

	public interface WithoutPasswordView {};
	public interface WithPasswordView extends WithoutPasswordView {};

	private String username;
	private String password;

	public User() {
	}

	public User(String username, String password) {
		this.username = username;
		this.password = password;
	}

	@JsonView(WithoutPasswordView.class)
	public String getUsername() {
		return this.username;
	}

	@JsonView(WithPasswordView.class)
	public String getPassword() {
		return this.password;
	}
}
@RestController
class UserController {

	@GetMapping("/user")
	@JsonView(User.WithoutPasswordView::class)
	fun getUser(): User {
		return User("eric", "7!jd#h23")
	}
}

class User(
		@JsonView(WithoutPasswordView::class) val username: String,
		@JsonView(WithPasswordView::class) val password: String
) {
	interface WithoutPasswordView
	interface WithPasswordView : WithoutPasswordView
}
@JsonView 允许使用视图类的数组,但每个控制器方法只能指定一个。如果您需要激活多个视图,请使用复合接口。