无法加载请求的类: datetime

Question

我想在Hibernate 5中使用Spring，但是在启动过程中我得到了这个错误：

Caused by: java.lang.ClassNotFoundException: Could not load requested class : datetime

这是我的POM.xml配置：

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.0.7.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.0.7.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.0.7.RELEASE</version>
            <type>jar</type>
            <scope>test</scope>
        </dependency>           
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.5</version>
        </dependency>
        <dependency>
            <groupId>javax.activation</groupId>
            <artifactId>activation</artifactId>
            <version>1.1.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>1.5.10.RELEASE</version>               
        </dependency>
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>8.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-amqp</artifactId>
            <version>1.5.10.RELEASE</version>
        </dependency>           
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>5.0.7.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>5.3.1.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>5.3.6.Final</version>
        </dependency>
        <dependency>
            <groupId>org.eclipse.persistence</groupId>
            <artifactId>javax.persistence</artifactId>
            <version>2.0.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
            <version>2.0.3.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.reactivestreams</groupId>
            <artifactId>reactive-streams</artifactId>
            <version>1.0.2</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.3.1.Final</version>
        </dependency>

完整的Java错误栈：https://pastebin.com/a01yU4vZ

我的模型中有datetime，我想在MariaDB中使用它。

@Type(type = "datetime")
@Temporal(TemporalType.DATE)
private DateType datetime;

我想我遗漏了一些对Hibernate的POM依赖。你能告诉我为了解决这个问题我必须添加什么依赖吗？

编辑：

对于datetime Hibernate配置，我使用：

    @Column
    @Type(type = "datetime")
    @Temporal(TemporalType.DATE)
    private DateType datetime;

Answer 1

Hibernate Date中没有您拥有的日期时间类型：

Name = date  Java Type = java.sql.Date
Name = calendar_date  Java Type = java.util.Calendar

如果您使用的是Java 8

NAme = LocalDate  Java Type = java.time.OffsetDateTime
Name = LocalDateTimeType  Java Type = java.time.LocalDateTime

在此Documentation中查看更多信息

Answer 2

对于实体字段datetime，您应该使用：

@Column
@Temporal(TemporalType.DATE)
private java.util.Date datetime`

或java.time包中的某个类。在最后一种情况下，您可能还需要添加following dependency

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-java8</artifactId>
    <version>5.3.2.Final</version>
</dependency>

在这两种情况下，我都不认为注释@Type(type = "datetime")是必要的。