【问题标题】:PostgreSQL 9.6 DATE column mapping using Hibernate 5+ in Java 8在 Java 8 中使用 Hibernate 5+ 的 PostgreSQL 9.6 DATE 列映射
【发布时间】:2023-03-19 03:36:02
【问题描述】:

让我们考虑一个简单的 Postgres 数据库,只有一张表和一列,即 DATE 类型,即:

CREATE DATABASE test;
CREATE TABLE test_table
(
    date_test DATE NOT NULL DEFAULT CURRENT_DATE
);

Hibernate documentation 关于基本类型和 PostgresSQL documentation 关于使用 Java 8 日期和时间类,我可以清楚地看到我应该能够像这样映射该表:

@Entity
@Table(name = "test_table")
public class TestTable
{
    @Column(name = "date_test")
    private LocalDate dateTest;
}

很容易,不需要写@Temporal 或任何类似的东西。从 Hibernate 文档中我可以阅读:

因为Java 8 Date/Time 类和SQL 类型之间的映射是隐式的,所以不需要指定@Temporal 注解。在 java.time 类上设置它会引发以下异常: org.hibernate.AnnotationException: @Temporal should only be set on a java.util.Date or java.util.Calendar property

但是,我遇到了一个错误

Schema-validation: wrong column type encountered in column [date_test] in table [test_table]; found [date (Types#DATE)], but expecting [bytea (Types#VARBINARY)]

在我的pom.xml 文件中,我有:

<dependency>
    <groupId>org.postgresql</groupId>
    <artifactId>postgresql</artifactId>
    <version>9.4-1206-jdbc42</version>
</dependency>

因为我也在使用 Spring Boot,所以在 application.properties 我有

spring.jpa.database-platform=org.hibernate.dialect.PostgreSQL9Dialect

我对文档有误吗?我应该写一个转换器还是有其他方法?

编辑
目前我的pom.xml 文件如下所示:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>groupId</groupId>
    <artifactId>Invoices-desktop</artifactId>
    <version>1.0-SNAPSHOT</version>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>

        <resources>
            <!-- copy fxml and css resources -->
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.fxml</include>
                    <include>**/*.css</include>
                    <include>**/*.properties</include>
                </includes>
            </resource>
            <resource>
                <directory>src/CurrencyDemo/java</directory>
                <includes>
                    <include>**/*.fxml</include>
                    <include>**/*.css</include>
                    <include>**/*.properties</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.*</include>
                </includes>
            </resource>
        </resources>

    </build>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <start-class>com.Main</start-class>
        <java.version>1.8</java.version>
    </properties>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.3.RELEASE</version>
    </parent>

    <dependencies>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
            <version>1.5.6.RELEASE</version>
            <exclusions>
                <exclusion>
                    <artifactId>org.hibernate</artifactId>
                    <groupId>hibernate-core</groupId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <version>9.4-1206-jdbc42</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>5.4.1.Final</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.2.10.Final</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.1-api</artifactId>
            <version>1.0.0.Final</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-CurrencyDemo</artifactId>
            <scope>CurrencyDemo</scope>
        </dependency>

        <dependency>
            <groupId>com.ibm.icu</groupId>
            <artifactId>icu4j</artifactId>
            <version>59.1</version>
        </dependency>

        <dependency>
            <groupId>org.apache.pdfbox</groupId>
            <artifactId>pdfbox</artifactId>
            <version>2.0.7</version>
        </dependency>

    </dependencies>

</project>

现在我得到了:

java.lang.NoSuchMethodError:org.hibernate.engine.spi.Session‌​FactoryImplementor.g‌​etProperties()Ljava/‌​util/Properties;

【问题讨论】:

    标签: java postgresql hibernate hibernate-5.x postgres-9.6


    【解决方案1】:

    您应该使用更新版本的 Hibernate。

    我不能说哪个版本开始支持 Java 8 Dates,但在我的项目中我使用 hibernate-core:5.2.6.Final

    我在使用 spring-boot-starter-data-jpa:1.5.6.RELEASE 时遇到了类似的问题,这取决于 hibernate-core:5.0.12.Final。

    注意:如果您使用了 spring-boot-starter-data-jpa,则应从依赖项中排除 hibernate-core

    【讨论】:

      【解决方案2】:

      感谢 Ruslan K. 的建议和这个答案 https://stackoverflow.com/a/44455146/4671908 我能够正确修改我的 pom.xml。不幸的是 spring-boot-starter-data-jpa 1.5.6.RELEASE 单独不支持最新的 Hibernate 修改,所以我从 pom.xml 中排除了 hibernate-corehibernate-entitymanager,现在看起来像这样

              <dependency>
                  <groupId>org.springframework.boot</groupId>
                  <artifactId>spring-boot-starter-data-jpa</artifactId>
                  <version>1.5.6.RELEASE</version>
                  <exclusions>
                      <exclusion>
                          <artifactId>org.hibernate</artifactId>
                          <groupId>hibernate-core</groupId>
                      </exclusion>
      
                      <exclusion>
                          <groupId>org.hibernate</groupId>
                          <artifactId>hibernate-entitymanager</artifactId>
                      </exclusion>
                  </exclusions>
              </dependency>
      
              <dependency>
                  <groupId>org.hibernate</groupId>
                  <artifactId>hibernate-core</artifactId>
                  <version>5.2.10.Final</version>
              </dependency>
      
              <dependency>
                  <groupId>org.hibernate</groupId>
                  <artifactId>hibernate-entitymanager</artifactId>
                  <version>5.2.10.Final</version>
              </dependency>
      
              <dependency>
                  <groupId>org.hibernate.javax.persistence</groupId>
                  <artifactId>hibernate-jpa-2.1-api</artifactId>
                  <version>1.0.0.Final</version>
              </dependency>
      

      【讨论】:

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