None of the above answers worked for me using Hibernate 5.2.10, Jersey 2.25.1 and Jackson 2.8.9. I finally found the answer (sort of, they reference hibernate4module but it works for 5 too) here. None of the Json annotations worked at all with @Transient. Apparently Jackson2 is 'smart' enough to kindly ignore stuff marked with @Transient unless you explicitly tell it not to. The key was to add the hibernate5 module (which I was using to deal with other Hibernate annotations) and disable the USE_TRANSIENT_ANNOTATION feature in my Jersey Application:

ObjectMapper jacksonObjectMapper = new ObjectMapper();
Hibernate5Module jacksonHibernateModule = new Hibernate5Module();
jacksonHibernateModule.disable(Hibernate5Module.Feature.USE_TRANSIENT_ANNOTATION);
jacksonObjectMapper.registerModule(jacksonHibernateModule);  

下面是Hibernate5Module的依赖:

<dependency>
    <groupId>com.fasterxml.jackson.datatype</groupId>
    <artifactId>jackson-datatype-hibernate5</artifactId>
    <version>2.8.9</version>
</dependency>

为了完成上面的回答，我使用了一个XML映射文件，其中@Transient和transient都不工作… 我必须把临时信息放在xml文件中:

<attributes>
(...)
    <transient name="field" />
</attributes>

这个回答来的有点晚，但它完成了响应。

为了避免来自实体的字段被持久化到DB中，可以使用以下两种机制之一:

@Transient—标记字段不可持久的JPA注释

java中的Transient关键字。注意-使用此关键字将阻止该字段与java中的任何序列化机制一起使用。因此，如果字段必须序列化，最好只使用@Transient注释。

None of the above answers worked for me using Hibernate 5.2.10, Jersey 2.25.1 and Jackson 2.8.9. I finally found the answer (sort of, they reference hibernate4module but it works for 5 too) here. None of the Json annotations worked at all with @Transient. Apparently Jackson2 is 'smart' enough to kindly ignore stuff marked with @Transient unless you explicitly tell it not to. The key was to add the hibernate5 module (which I was using to deal with other Hibernate annotations) and disable the USE_TRANSIENT_ANNOTATION feature in my Jersey Application:

ObjectMapper jacksonObjectMapper = new ObjectMapper();
Hibernate5Module jacksonHibernateModule = new Hibernate5Module();
jacksonHibernateModule.disable(Hibernate5Module.Feature.USE_TRANSIENT_ANNOTATION);
jacksonObjectMapper.registerModule(jacksonHibernateModule);  

下面是Hibernate5Module的依赖:

<dependency>
    <groupId>com.fasterxml.jackson.datatype</groupId>
    <artifactId>jackson-datatype-hibernate5</artifactId>
    <version>2.8.9</version>
</dependency>

使用@Transient使JPA忽略字段。

但是!Jackson也不会序列化该字段。要解决这个问题，只需添加@JsonProperty

一个例子

@Transient
@JsonProperty
private boolean locked;

要忽略一个字段，请使用@Transient注释它，这样它就不会被hibernate映射。

但是jackson在转换为JSON时不会序列化字段。

如果你需要混合JPA和JSON(JPA省略，但仍然包含在Jackson中)使用@JsonInclude:

@JsonInclude()
@Transient
private String token;

TIP:

你也可以使用JsonInclude.Include。当token == null时，在反序列化期间在JSON中隐藏NON_NULL字段:

@JsonInclude(JsonInclude.Include.NON_NULL)
@Transient
private String token;