Java spring.jpa.properties.hibernate.jdbc.time_zone应用于写操作，但不应用于读操作？

我正在使用：

• 弹簧靴2.0.4.1版本
• spring数据jpa 2.0.9.0版本
• hibernate core 5.2.17.1最终版本
• hibernate-jpa-2.1-api 1.0.0.Final
• postgres jdbc驱动程序42.2.9

我拥有以下实体：

@Entity
@EntityListeners(AuditingEntityListener.class)
public class MyEntity implements Serializable
{
    @Column(nullable = false, updatable = false)
    @CreatedDate
    private LocalDateTime createdDate;

    @Column(nullable = false)
    @LastModifiedDate
    private LocalDateTime lastModifiedDate;

    public LocalDateTime getCreatedDate()
    {
        return createdDate;
    }

    public LocalDateTime getLastModifiedDate()
    {
        return lastModifiedDate;
    }
}

以及application.yaml中设置的以下属性：

spring:
  jpa:
    properties:
      hibernate:
        jdbc:
          time_zone: UTC

无论JVM时区/默认时区是什么，我都希望以UTC格式保存并返回时间戳

出于测试目的，我已将我的应用程序代码的时区设置为

US/Hawaii

：

TimeZone.setDefault(TimeZone.getTimeZone("US/Hawaii"));

当我保存实体时，它会正确写入数据库，并带有UTC时间戳：

[16:43:04.636Z #4c5.042 TRACE -            -   ] o.h.t.d.sql.BasicBinder: binding parameter [1] as [TIMESTAMP] - [2020-03-02T06:43:04.581]
[16:43:04.645Z #4c5.042 TRACE -            -   ] o.h.t.d.sql.BasicBinder: binding parameter [2] as [TIMESTAMP] - [2020-03-02T06:43:04.581]
[16:43:04.649Z #4c5.042 TRACE -            -   ] o.h.r.j.i.ResourceRegistryStandardImpl: Closing prepared statement [HikariProxyPreparedStatement@336047848 wrapping insert into myentity (createdDate, lastModifiedDate) values ('2020-03-02 16:43:04.581+00', '2020-03-02 16:43:04.581+00')]

但是，当我再次读取它时，它将作为我在应用程序代码中设置的默认时区返回：

US/Hawaii

，而不是

UTC

：

[16:43:04.692Z #4c5.043 TRACE -            -   ] o.h.t.d.sql.BasicExtractor: extracted value ([createdD4_0_0_] : [TIMESTAMP]) - [2020-03-02T06:43:04.581]
[16:43:04.692Z #4c5.043 TRACE -            -   ] o.h.t.d.sql.BasicExtractor: extracted value ([lastModi5_0_0_] : [TIMESTAMP]) - [2020-03-02T06:43:04.581]
[16:43:04.695Z #4c5.043 TRACE -            -   ] o.h.l.p.e.p.i.ResultSetProcessorImpl: Done processing result set (1 rows)
[16:43:04.696Z #4c5.043 TRACE -            -   ] o.h.l.p.e.p.i.AbstractRowReader: Total objects hydrated: 1
[16:43:04.696Z #4c5.043 TRACE -            -   ] o.h.l.p.e.p.i.ResultSetProcessingContextImpl: Skipping create subselects because there are fewer than 2 results, so query by key is more efficient.
[16:43:04.696Z #4c5.043 TRACE -            -   ] o.h.r.j.i.ResourceRegistryStandardImpl: Releasing result set [HikariProxyResultSet@622126582 wrapping org.postgresql.jdbc.PgResultSet@3f0764b8]
[16:43:04.696Z #4c5.043 TRACE -            -   ] o.h.r.j.i.ResourceRegistryStandardImpl: Closing result set [HikariProxyResultSet@622126582 wrapping org.postgresql.jdbc.PgResultSet@3f0764b8]
[16:43:04.696Z #4c5.043 TRACE -            -   ] o.h.r.j.i.ResourceRegistryStandardImpl: Releasing statement [HikariProxyPreparedStatement@1612081040 wrapping select myentity0_.createdDate as createdD4_0_0_, myentity0_.lastModifiedDate as lastModi5_0_0_, where myentity0_.id='123']

[10:10:21.475Z #065.042 TRACE -            -   ] o.h.t.d.sql.BasicBinder: binding parameter [1] as [TIMESTAMP] - [2020-03-03T10:10:17.400]
[10:10:21.476Z #065.042 TRACE -            -   ] o.h.t.d.sql.BasicBinder: binding parameter [2] as [TIMESTAMP] - [2020-03-03T10:10:17.400]
[HikariProxyPreparedStatement@860888944 wrapping insert into myentity(createdDate, lastModifiedDate) values ('2020-03-03 10:10:17.4-10', '2020-03-03 10:10:17.4-10')]
[10:10:21.479Z #065.042 TRACE -            -   ] 

[10:10:24.527Z #065.043 TRACE -            -   ] o.h.t.d.sql.BasicExtractor: extracted value ([createdD4_0_0_] : [TIMESTAMP]) - [2020-03-03T10:10:17.400]
[10:10:24.527Z #065.043 TRACE -            -   ] o.h.t.d.sql.BasicExtractor: extracted value ([lastModi5_0_0_] : [TIMESTAMP]) - [2020-03-03T10:10:17.400]

我曾尝试将

serverTimezone=UTC&useLegacyDatetimeCode=false

添加到我的JDBC URL中，但没有效果

可能相关：

非常感谢您的帮助

更新

根据@midhun mathew的回答，我发现控制应用程序代码中的日期就足以解决这个问题（同时从application.yaml中删除time_zone属性）：

现在，当写入DB时，日期被“绑定”并作为

UTC

插入（与原始帖子相比，在原始帖子中，日期被“绑定”为

US\Hawaii

，但作为

UTC

插入）：

从数据库读取实体时，日期不再被读取为

US/Hawaii

，而是

UTC

：

[16:43:04.692Z #4c5.043 TRACE -            -   ] o.h.t.d.sql.BasicExtractor: extracted value ([createdD4_0_0_] : [TIMESTAMP]) - [2020-03-02T06:43:04.581]
[16:43:04.692Z #4c5.043 TRACE -            -   ] o.h.t.d.sql.BasicExtractor: extracted value ([lastModi5_0_0_] : [TIMESTAMP]) - [2020-03-02T06:43:04.581]
[16:43:04.695Z #4c5.043 TRACE -            -   ] o.h.l.p.e.p.i.ResultSetProcessorImpl: Done processing result set (1 rows)
[16:43:04.696Z #4c5.043 TRACE -            -   ] o.h.l.p.e.p.i.AbstractRowReader: Total objects hydrated: 1
[16:43:04.696Z #4c5.043 TRACE -            -   ] o.h.l.p.e.p.i.ResultSetProcessingContextImpl: Skipping create subselects because there are fewer than 2 results, so query by key is more efficient.
[16:43:04.696Z #4c5.043 TRACE -            -   ] o.h.r.j.i.ResourceRegistryStandardImpl: Releasing result set [HikariProxyResultSet@622126582 wrapping org.postgresql.jdbc.PgResultSet@3f0764b8]
[16:43:04.696Z #4c5.043 TRACE -            -   ] o.h.r.j.i.ResourceRegistryStandardImpl: Closing result set [HikariProxyResultSet@622126582 wrapping org.postgresql.jdbc.PgResultSet@3f0764b8]
[16:43:04.696Z #4c5.043 TRACE -            -   ] o.h.r.j.i.ResourceRegistryStandardImpl: Releasing statement [HikariProxyPreparedStatement@1612081040 wrapping select myentity0_.createdDate as createdD4_0_0_, myentity0_.lastModifiedDate as lastModi5_0_0_, where myentity0_.id='123']

[10:10:21.475Z #065.042 TRACE -            -   ] o.h.t.d.sql.BasicBinder: binding parameter [1] as [TIMESTAMP] - [2020-03-03T10:10:17.400]
[10:10:21.476Z #065.042 TRACE -            -   ] o.h.t.d.sql.BasicBinder: binding parameter [2] as [TIMESTAMP] - [2020-03-03T10:10:17.400]
[HikariProxyPreparedStatement@860888944 wrapping insert into myentity(createdDate, lastModifiedDate) values ('2020-03-03 10:10:17.4-10', '2020-03-03 10:10:17.4-10')]
[10:10:21.479Z #065.042 TRACE -            -   ] 

[10:10:24.527Z #065.043 TRACE -            -   ] o.h.t.d.sql.BasicExtractor: extracted value ([createdD4_0_0_] : [TIMESTAMP]) - [2020-03-03T10:10:17.400]
[10:10:24.527Z #065.043 TRACE -            -   ] o.h.t.d.sql.BasicExtractor: extracted value ([lastModi5_0_0_] : [TIMESTAMP]) - [2020-03-03T10:10:17.400]

---

我也面临同样的问题。我的数据库时区是UTC，我的应用程序时区是新加坡。 我解决了这个问题，让实体和表都有UTC的日期，这样就不需要在它们之间进行转换。然后，我在getter和setter中对代码中的时间戳进行了转换

因此，MyEntity类将在UTC中存储createdAt和lastModifiedAt

在二传中，你可以有

public void setCreatedDate(LocalDateTime createdAt)
{         
    this.createdAt = createdAt.atZone(ZoneId.systemDefault()).withZoneSameInstant(ZoneOffset.UTC).toLocalDateTime();
}

public LocalDateTime getCreatedDate()
{         
    return createdAt.atZone(ZoneId.systemDefault()).withZoneSameInstant(ZoneOffset.UTC).toLocalDateTime();
}

在getter中，您可以有如下内容

public void setCreatedDate(LocalDateTime createdAt)
{         
    this.createdAt = createdAt.atZone(ZoneId.systemDefault()).withZoneSameInstant(ZoneOffset.UTC).toLocalDateTime();
}

public LocalDateTime getCreatedDate()
{         
    return createdAt.atZone(ZoneId.systemDefault()).withZoneSameInstant(ZoneOffset.UTC).toLocalDateTime();
}

---

在转换时间时，您可能还必须删除时区属性以及@CreatedDate和@LastModifiedDate注释。

这将使其正常工作：

---

TimeZone.setDefault（TimeZone.getTimeZone（“UTC”）
谢谢@midhun mathew，我已经用我需要做的事情更新了我的帖子-我发现如果我总是在应用程序代码中将日期设置为UTC，那么转换就没有必要了。我认为这只是一个解决办法。然后我们可以说hibernate属性没有按预期工作