我怎么能忽略json响应中的字段？

Question

@Column(name = "password", nullable = false)
@JSonIgnore
private String password;

I have given the above field in my model class, but It did not work for the POST method.

Error:null value in column "password" violates not-null constraint

Answer 1

Add @JsonIgnore only on getter method .

@Column(name = "password", nullable = false)
private String password;

@JsonIgnore
public String getPassword() {
    return password;
}

public void setPassword(String password) {
    this.password = password;
}

or

@JsonProperty(access = Access.WRITE_ONLY)
@Column(name = "password", nullable = false)
private String password;

Answer 2

I had solved the problem. This was my old code: @Column(name = "password", nullable = false)

`@JSonIgnore`

`private String password;` 

Instead of JSonIgnore, we can use JSonProperty. Below is the code:

This is the new code: @Column(name = "password", nullable = false)

@JsonProperty(access = Access.WRITE_ONLY)

private String password;

Thanks to everyone for helping...

Answer 3

您已将字段设置为nullable = false - 这意味着密码不能为空，因此某些代码验证不允许您将空值传递给password 。

Answer 4

I think you're mixing up the request and the response:

• @JsonIgnore will ignore the field when it gets parsed to JSON as a response object. (Eg for some API call)
• If you POST data which should be creating an object with a nonnull password, the request must have this parameter. @JsonIgnore does not change anything to that.

If you want to have the POST data being valid while not sending the password, you will need to create an object which you can save apart from the password. This could be a saveable superclass, where the subclass has only the password, or just another class which has a relation to another class which holds the password field.

If you don't want the separate class, you'll either have to add the password to your request or change nullable attribute in the @Column annotation to true.