开发者社区> 问答> 正文

Hibernate 映射Oracle中的表,为什么会用到MySQL的包??报错

各位大神,小菜鸟有一个疑惑。一个项目里面链接了两个数据库,分别是MySQL和Oracle,他们的DateSource和SessionFactory如下:

<!--start 配置DATASOURCES -->
	<bean id="dataSourceOracle" class="com.alibaba.druid.pool.DruidDataSource"
		init-method="init" destroy-method="close">
		<!-- <property name="name" value="${oracle.driverClassName}" /> -->
		<property name="url" value="${oracle.dailypre_url}" />
		<property name="username" value="${oracle.username}" />
		<property name="password" value="${oracle.password}" />
		<property name="maxOpenPreparedStatements" value="100"/>

		<property name="maxActive" value="${druid.max_size}" />
		<property name="filters" value="config" />
		<!-- 配置数据库加密 -->
		<property name="connectionProperties"
			value="config.decrypt=true;config.decrypt.key=${oracle.publickey}" />
	</bean>

	<bean id="dataSourceMySQL" class="com.alibaba.druid.pool.DruidDataSource"
		init-method="init" destroy-method="close">
		<!-- <property name="name" value="${mysql.driverClassName}" /> 可根据URL自动判断出DBDRIVER-->
		<property name="url" value="${mysql.dailyreport_url}" />
		<property name="username" value="${mysql.username}" />
		<property name="password" value="${mysql.password}" />

		<property name="maxActive" value="${druid.max_size}" />
		<property name="filters" value="config" />
		<!-- 配置数据库加密 -->
		<property name="connectionProperties"
			value="config.decrypt=true;config.decrypt.key=${mysql.publickey}" />
	</bean>
	<!--end 配置DATASOURCES -->

	<!--start 配置SessionFactory-->
	<bean id="sessionFactoryMySQL"
		class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
		<property name="dataSource" ref="dataSourceMySQL"></property>
		<!-- 注解的实体类通过此扫描的方式注入 -->
		<property name="packagesToScan" value="org.daily.**.entity" />
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</prop>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.hbm2ddl.auto">update</prop>
				<!-- hibernate.current_session_context_class此处与Spring2.x不同,不能为thread,否则报错:?? 
					is not valid without active transaction -->
				<prop key="hibernate.current_session_context_class">
					org.springframework.orm.hibernate5.SpringSessionContext
				</prop>
			</props>
		</property>
	</bean>

	<bean id="sessionFactoryOracle"
		class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
		<property name="dataSource" ref="dataSourceOracle"></property>
		<!-- 注解的实体类通过此扫描的方式注入 -->
		<property name="packagesToScan" value="org.daily.**.entity" />
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop>
				<prop key="hibernate.show_sql">true</prop>
				<!-- hibernate.current_session_context_class此处与Spring2.x不同,不能为thread,否则报错:?? 
					is not valid without active transaction -->
				<prop key="hibernate.current_session_context_class">
					org.springframework.orm.hibernate5.SpringSessionContext
				</prop>
			</props>
		</property>
	</bean>
	<!--end 配置SessionFactory-->

现提取MySQL数据库中的数据时,没有问题。

但是当提取Oracle中数据时,进行查询测试,

报错,如下:

Caused by: org.hibernate.tool.schema.spi.SchemaManagementException: Unable to execute schema management to JDBC target [create table USER_INFO (USER_ID varchar(255) not null, department1 varchar(255), department2 varchar(255), username varchar(255), primary key (USER_ID)) type=InnoDB]
	at org.hibernate.tool.schema.internal.TargetDatabaseImpl.accept(TargetDatabaseImpl.java:59)
	at org.hibernate.tool.schema.internal.SchemaMigratorImpl.applySqlString(SchemaMigratorImpl.java:431)
	at org.hibernate.tool.schema.internal.SchemaMigratorImpl.applySqlStrings(SchemaMigratorImpl.java:420)
	at org.hibernate.tool.schema.internal.SchemaMigratorImpl.createTable(SchemaMigratorImpl.java:236)
	at org.hibernate.tool.schema.internal.SchemaMigratorImpl.doMigrationToTargets(SchemaMigratorImpl.java:167)
	at org.hibernate.tool.schema.internal.SchemaMigratorImpl.doMigration(SchemaMigratorImpl.java:60)
	at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:133)
	at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:101)
	at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:470)
	at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:444)
	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:708)
	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:724)
	at org.springframework.orm.hibernate5.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:416)
	at org.springframework.orm.hibernate5.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:401)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
	... 71 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'type=InnoDB' at line 1
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:404)
	at com.mysql.jdbc.Util.getInstance(Util.java:387)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:941)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3870)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3806)
	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2470)
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2617)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2546)
	at com.mysql.jdbc.StatementImpl.executeUpdateInternal(StatementImpl.java:1541)
	at com.mysql.jdbc.StatementImpl.executeLargeUpdate(StatementImpl.java:2605)
	at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1469)
	at com.alibaba.druid.filter.FilterChainImpl.statement_executeUpdate(FilterChainImpl.java:2377)
	at com.alibaba.druid.filter.FilterAdapter.statement_executeUpdate(FilterAdapter.java:2486)
	at com.alibaba.druid.filter.FilterChainImpl.statement_executeUpdate(FilterChainImpl.java:2375)
	at com.alibaba.druid.proxy.jdbc.StatementProxyImpl.executeUpdate(StatementProxyImpl.java:225)
	at com.alibaba.druid.pool.DruidPooledStatement.executeUpdate(DruidPooledStatement.java:169)
	at org.hibernate.tool.schema.internal.TargetDatabaseImpl.accept(TargetDatabaseImpl.java:56)
	... 86 more
<p>
	</p><p>
		<br>
	</p>
<p></p>
<p>
	<span></span>
</p>
<p>
	百思不得其解,请高手指教。
</p>
<p>
	实体类代码:
</p>
<p>

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;

import org.springframework.stereotype.Component;

@Component
@Entity
@Table(name = "USER_INFO")
public class UserInfo implements java.io.Serializable{

	@Id
	@Column(name = "USER_ID")
	private String userId;
	@Column(name = "username")
	private String userName;
	@Column(name = "department1")
	private String buMen;
	@Column(name = "department2")
	private String keShi;

getter setter略
}
	<p>
		</p><p>
			<br>
		</p>
	<p></p>

展开
收起
爱吃鱼的程序员 2020-06-09 14:45:27 546 0
1 条回答
写回答
取消 提交回答
  • https://developer.aliyun.com/profile/5yerqm5bn5yqg?spm=a2c6h.12873639.0.0.6eae304abcjaIB

    <property<spanstyle="font-family:Consolas,'BitstreamVeraSansMono','CourierNew',Courier,monospace;font-size:14px;line-height:15.4px;background-color:#FFFFFF;">name="packagesToScan"<spanstyle="font-family:Consolas,'BitstreamVeraSansMono','CourierNew',Courier,monospace;font-size:14px;line-height:15.4px;background-color:#FFFFFF;">value="org.daily..entity"<spanstyle="font-family:Consolas,'BitstreamVeraSansMono','CourierNew',Courier,monospace;font-size:14px;line-height:15.4px;background-color:#FFFFFF;">/>你的两个数据源都是扫描这个包里面的东西,默认是走到了mysql里面,oracle实体和mysql实体包分开就没事了,不要扫描到同一包下面而又是不同的数据库实体十分感谢,确实是这个问题。只是想不通程序在怎么运行的,因为在使用Oracle链接时,并没有连接过MySQL。

    别闹。。。

    java程序怎么知道你要的是oracle还是mysql里的数据啊?

    <preclass="brush:java;toolbar:true;auto-links:false;"><beanid="sessionFactoryMySQL"class="org.springframework.orm.hibernate5.LocalSessionFactoryBean"><propertyname="dataSource"ref="dataSourceMySQL"></property><!--注解的实体类通过此扫描的方式注入--><propertyname="packagesToScan"value="org.daily..entity"/>

    <spanstyle="font-size:10pt;line-height:1.5;">你这不明明配的mysql的么

    <divclass='ref'>

    引用来自“南湖船老大”的评论

    别闹。。。

    java程序怎么知道你要的是oracle还是mysql里的数据啊?

    <preclass="brush:java;toolbar:true;auto-links:false;"><beanid="sessionFactoryMySQL"class="org.springframework.orm.hibernate5.LocalSessionFactoryBean"><propertyname="dataSource"ref="dataSourceMySQL"></property><!--注解的实体类通过此扫描的方式注入--><propertyname="packagesToScan"value="org.daily.**.entity"/>

    <spanstyle="font-size:10pt;line-height:1.5;">你这不明明配的mysql的么

    2020-06-09 14:45:45
    赞同 展开评论 打赏
问答排行榜
最热
最新

相关电子书

更多
One Box: 解读事务与分析一体化数据库 HybridDB for MySQL 立即下载
One Box:解读事务与分析一体化数据库HybridDB for MySQL 立即下载
如何支撑HTAP场景-HybridDB for MySQL系统架构和技术演进 立即下载

相关镜像