hibernate连接oracle数据库注意事项

1.     导入oracle-jar包(在oracle安装目录中找到jar包，推荐ojdbc14.jar)

 

 

2.     hibernate中修改配置文件，注意端口号为1521

<!-- Hibernate配置文件 --> <hibernate-configuration>     <session-factory>        <!-- 数据库驱动 -->        <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>        <!-- 数据库连接的URL -->        <property name="connection.url">jdbc:oracle:thin:@localhost:1521:lianxi</property>        <!-- 数据库连接用户名 -->        <property name="connection.username">scott</property>        <!-- 数据库连接密码 -->        <property name="connection.password">tiger</property>        <!-- Hibernate方言 -->        <property name="dialect">org.hibernate.dialect.OracleDialect</property>        <!-- 打印SQL语句 -->        <property name="show_sql">true</property>               <!-- 映射文件  -->        <mapping resource="com/sichuang/oa/bean/User.hbm.xml" />

 

 

3.      在spring配置文件中修改

<!-- 配置连接数据库的数据源 -->            <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"                   destroy-method="close">                  <property name="driverClass" value="oracle.jdbc.driver.OracleDriver"/>                  <property name="jdbcUrl" value="jdbc:oracle:thin:@localhost:1521:lianxi"/>                  <property name="user" value="scott" />                  <property name="password" value="tiger"/>            </bean>                           <!-- 配置SessionFactory -->             <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">                 <property name="dataSource" ref="dataSource"/>                 <property name="mappingResources">                   <list>                     <value>com/sichuang/oa/bean/User.hbm.xml</value>                                       </list>                 </property>                 <property name="hibernateProperties">                   <value>                       hibernate.dialect=org.hibernate.dialect.OracleDialect                       hibernate.hbm2ddl.auto=update                       hibernate.show_sql=false                       hibernate.format_sql=false                     </value>                </property>            </bean>

 

4.     在实体类的配置文件中修改，注意在oracle数据中id号不能自动增长，必修要创建“序列sequence”

create sequence SEQ_USER_ID;(建议的序列名：seq_数据库名_主键名)

配置：id主键        <id name="id" unsaved-value="null">                <generator class="sequence" >               <param name="sequence">SEQ_USER_ID（所创建的序列）</param>             </generator>         </id>