配置Spring JPA以连接MySQL

Question

我有一个以Jetty开头的spring应用程序。

bean配置：

   <context:component-scan base-package="com.mypackage"></context:component-scan>
    <mvc:annotation-driven/>
     <tx:annotation-driven />
      <jpa:repositories base-package="com.mypackage.repository" />
    <bean name="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <property name="url" value="jdbc:mysql://localhost:3306/mydb?useSSL=false" />
    <property name="username" value="root" />
    <property name="password" value="123456" />
    </bean>
  <bean id="hibernateJpaVendorAdapter" 
    class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
  </bean>
  <bean id="entityManagerFactory" 
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="dataSource"/>
    <property name="jpaVendorAdapter" ref="hibernateJpaVendorAdapter"/>
    <!-- Set JPA properties -->
            <property name="loadTimeWeaver">
            <bean
    class="org.springframework.instrument.classloading.SimpleLoadTimeWeaver" />
        </property>
    <property name="jpaProperties">
      <props>
        <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
        <prop key="javax.persistence.schemageneration.database.action">none</prop>
        <prop key="hibernate.ejb.use_class_enhancer">true</prop>
      </props>
    </property>

    <property name="packagesToScan" value="com.openstack.dashboard.domain"/>

    <property name="sharedCacheMode" value="ENABLE_SELECTIVE"/>

    <property name="validationMode" value="NONE"/>
  </bean>
  <bean id="transactionManager" 
    class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="entityManagerFactory"/>
  </bean>

启动应用程序时出现此错误：

引起原因：org.hibernate.service.spi.ServiceException：无法在org.hibernate.service.internal.AbstractServiceRegistryImpl.createService（AbstractServiceRegistryImpl.java：上创建请求的服务[org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] 264），位于org.hibernate.service.internal.AbstractServiceRegistryImpl.java:228，位于org.hibernate.service.internal.AbstractServiceRegistryImpl.getService（AbstractServiceRegistryImpl.java:207），位于org.hibernate.engine.jdbc.internal org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService（StandardServiceRegistryImpl.java:94）上的.JdbcServicesImpl.configure（JdbcServicesImpl.java:51）在org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService（AbstractServiceRegistryImpljava :: ）在org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTyp的org.hibernate.service.internal.AbstractServiceRegistryImpl.getService（AbstractServiceRegistryImpl.java:207） 在org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete（MetadataBuildingProcess.java:111）处的es（MetadataBuildingProcess.java:352）在org.hibernate.jpa.boot.internal.EntityManagerFactoryFactoryBuilderImpl.metadata（EntityManagerFactoryBuilderImpl.java： 847）在org.springframework的org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory（SpringHibernateJpaPersistenceProvider.java:60）的org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build（EntityManagerFactoryBuilderImpl.java:874） org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet（AbstractEntityManagerFactoryBean.java:318）的org.springframework.beans.factory.support.AbstractAutowireCapableBeanableBeanFactory.invoke.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory（LocalContainerEntityManagerFactoryBean.java:343） ：1637），网址为org.springframework.beans.factory.suppo rt.AbstractAutowireCapableBeanFactory.initializeBean（AbstractAutowireCapableBeanFactory.java:1574）... 67更多原因：org.hibernate.HibernateException：无法在org.hibernate.engine.jdbc.dialect上构建请求的方言[org.hibernate.dialect.MySQL5Dialect] org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect（DialectFactoryImpl.java:51）上的.internal.DialectFactoryImpl.constructDialect（DialectFactoryImpl.java:84），位于org.hibernate.engine.jdbc.env.internal.JdbcEnviron org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService（JdbcEnvironmentInitiator.java:35）上的.initiateService（JdbcEnvironmentInitiator.java:137），org.hibernate.boot.registry.internal.StandardServiceRegistryImpl。 ：88）at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService（AbstractServiceRegistryImpl.java:254）... 82更多原因：java.lang.ClassCastException：org.hibernate.dialect.MySQL5D ialect无法转换为org.hibernate的org.hibernate.dialect.Dialect

依赖项信息：

    <dependencies>
<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>       
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>${spring.version}</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-tx</artifactId>
    <version>${spring.version}</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
    <version>${spring.version}</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-orm</artifactId>
    <version>${spring.version}</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>${spring.version}</version>
</dependency>
<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-core</artifactId>
    <version>${spring.version}</version>
</dependency>
<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-web</artifactId>
    <version>${spring.version}</version>
</dependency>
<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-web</artifactId>
    <version>${spring.version}</version>
</dependency>
<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-config</artifactId>
    <version>${spring.version}</version>
</dependency>
<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-ldap</artifactId>
    <version>${spring.version}</version>
</dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
                <version>1.5.2.RELEASE</version>

    </dependency>
    <dependency>
        <groupId>commons-net</groupId>
        <artifactId>commons-net</artifactId>
        <version>2.0</version>
    </dependency>
    <dependency>
        <groupId>org.json</groupId>
        <artifactId>json</artifactId>
        <version>20160810</version>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-exec</artifactId>
        <version>1.0.1</version>
    </dependency>
    <dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.4</version>
    </dependency>
    <dependency>
        <groupId>com.googlecode.json-simple</groupId>
        <artifactId>json-simple</artifactId>
        <version>1.1</version>
    </dependency>

            <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.2.5</version>
    </dependency>
            <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-mapper-asl</artifactId>
        <version>1.9.13</version>
    </dependency>
            <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.0.5</version>
        <scope>runtime</scope>
    </dependency>
</dependencies>

我是Spring的新手。 感谢您的全力支持！

Answer 1

您没有在文件pom.xml中放置Hibernate依赖项：

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>5.3.1.Final</version>
</dependency>

检查哪个Hibernate版本可以满足您的需求，并且可以工作（取决于您使用的Spring版本）。

此外，您在这里有错别字：

<prop key="javax.persistence.schemageneration.database.action">none</prop>

它应该看起来像这样：

<prop key="javax.persistence.schema-generation.database.action">none</prop>