具有验证约束的Java DTO中的可选字段

发布于 2025-01-24 01:23:26 字数 402 浏览 3 评论 0原文

我已经创建了一个具有验证约束的属性的DTO（就像所有属性一样，必须在JSON对象中）。现在，我想以JSON对象中缺少特定属性的方式进行DTO，这不会导致错误。

public class UserDTO{
    private String name;
    private String address;
    private String email;
    private String mobileNumber;
}

现在，我想使用的JSON对象可能就是这样（缺少电子邮件）。

{
    name:"Hamza",
    address:"ABC",
    mobileNumber:"12345"
}

该怎么办？是否有任何使字段可选的注释？

原文

I've created a DTO with some properties with validation constraint (like all the properties must be present in JSON Object). Now, I want to make that DTO in a way like if a particular property is missing in JSON Object, it causes no error.

public class UserDTO{
    private String name;
    private String address;
    private String email;
    private String mobileNumber;
}

Now the JSON Object which I want to work could be like this (with missing email).

{
    name:"Hamza",
    address:"ABC",
    mobileNumber:"12345"
}

What should be done? Is there any annotation which makes the field optional?

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谎言 2025-01-31 01:23:26

您可以添加@jsonignoreproperties（ignoreunknown = true）来忽略所有不知道的字段（如果您不知道需要忽略哪个字段）。或者，您可以在字段之上添加@jsonignore（如果您知道在避难过程中需要忽略哪个字段）。

@JsonIgnoreProperties(ignoreUnknown = true)
public class UserDTO {
    private String name;
    private String address;
    private String email;
    private String mobileNumber;
}

you can add @JsonIgnoreProperties(ignoreUnknown = true) to ignore all unknow fields (if you don't know which need to ignore). or you can add @JsonIgnore on top of the field (if you know which field need to ignore during deserialization).

@JsonIgnoreProperties(ignoreUnknown = true)
public class UserDTO {
    private String name;
    private String address;
    private String email;
    private String mobileNumber;
}

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