英文:
Ignore a property in Dto from RequestBody base on endpoint (use one Dto for two purpose)
问题
在数据库中我有一个优惠券表，所以在应用程序中有CouponEntity和CouponDto。我的问题是关于如何处理使用一个Dto的两个端点。例如，我有创建（create）和更新（update）端点，它们都使用CouponDto。有一个业务规则，我不能更新优惠券实体的“code”属性。如果客户在请求中传递了这个属性，如何忽略它？
如果我使用@JsonIgnore，这个属性将在我需要在创建API中获取它的两个端点中被忽略。我使用了groups进行验证，并将验证从彼此分开，但有时无法设置@JsonIgnore。
创建优惠券：
@PostMapping("/create")
public ResponseEntity<?> createCoupon(@RequestBody CouponCodeDTO couponCodeDTO) {
return ResponseEntity.ok(couponService.create(couponCodeDTO));
}
更新优惠券：
@PutMapping("/update/{id}")
public ResponseEntity<?> updateCoupon(
@PathVariable Long id, @RequestBody CouponCodeDTO couponCodeDTO
) {
return ResponseEntity.ok(couponService.update(id, couponCodeDTO));
}
以及CouponDto：
public class CouponCodeDto extends BaseDto<Integer> {
@NotBlank
private String code;
private Integer availableCount;
@NotNull
private LocalDate startDate;
// ...
}
英文:
I have a Coupon Table in the database so there are CouponEntity and CouponDto in the application. My question is about handling two endpoints with one Dto. for example, I have create and update endpoints, both of them use CouponDto. There is a business role that I can't update code property of the coupon entity. How to ignore it if the client passes this property in the request?
If I use @JsonIgnore, the property will be ignored in both the endpoints that I need to get it in create API. I used groups for validations and separate validations from each other, but @JsonIgnore can not be set sometimes.
For create a coupon:
@PostMapping("/create")
public ResponseEntity<?> createCoupon(@RequestBody CouponCodeDTO couponCodeDTO) {
return ResponseEntity.ok(couponService.create(couponCodeDTO));
}
For update a coupon:
@PutMapping("/update/{id}")
public ResponseEntity<?> updateCoupon(
@PathVariable Long id, @RequestBody CouponCodeDTO couponCodeDTO
) {
return ResponseEntity.ok(couponService.update(id, couponCodeDTO));
}
And CouponDto:
public class CouponCodeDto extends BaseDto<Integer> {
@NotBlank
private String code;
private Integer availableCount;
@NotNull
private LocalDate startDate;
...
}
答案1
得分: 4
你可以使用 @JsonView 来指定每个视图中要序列化/反序列化的字段，并在端点上指定视图。
public class Views {
interface Update {}
interface Create extends Update {}
}
public class CouponCodeDto extends BaseDto<Integer> {
@NotBlank
@JsonView(Views.Create.class)
private String code;
@JsonView(Views.Update.class)
private Integer availableCount;
@NotNull
@JsonView(Views.Update.class)
private LocalDate startDate;
// ...
}
然后在端点的请求体中使用：
@PutMapping("/update/{id}")
public ResponseEntity<?> updateCoupon(@PathVariable Long id,
@JsonView(Views.Update.class) @RequestBody CouponCodeDTO couponCodeDTO) {
@PostMapping("/create")
public ResponseEntity<?> createCoupon(
@JsonView(Views.Create.class) @RequestBody CouponCodeDTO couponCodeDTO) {
你可以在以下链接找到详细信息：
- https://www.baeldung.com/jackson-json-view-annotation
- https://spring.io/blog/2014/12/02/latest-jackson-integration-improvements-in-spring
英文:
You can use @JsonView to specify the field you want to serialize/deserialize per view and specify view on the endpoint.
public class Views {
interface Update {}
interface Create extends Update {}
}
public class CouponCodeDto extends BaseDto<Integer> {
@NotBlank
@JsonView(Views.Create.class)
private String code;
@JsonView(Views.Update.class)
private Integer availableCount;
@NotNull
@JsonView(Views.Update.class)
private LocalDate startDate;
...
}
And use on request body of the endpoint
@PutMapping("/update/{id}")
public ResponseEntity<?> updateCoupon(@PathVariable Long id,
@JsonView(Views.Update.class) @RequestBody CouponCodeDTO couponCodeDTO) {
@PostMapping("/create")
public ResponseEntity<?> createCoupon(
@JsonView(Views.Create.class) @RequestBody CouponCodeDTO couponCodeDTO) {
Here you find details
https://www.baeldung.com/jackson-json-view-annotation
https://spring.io/blog/2014/12/02/latest-jackson-integration-improvements-in-spring
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