我做了个ssh2简单实例，用到了实体bean的注解，添加对象时就会报找不到bean？？？求姐脱啊~~~~~
我的bean配置：
@Repository
@Entity
@Table(name="STUDENT")
public class Student {
@Id
@SequenceGenerator(name = "ST_SQC", sequenceName = "ST_SQC")
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "ST_SQC")
@Column(name = "id")
private int id;
private String name;
private String gender;
private String startDate;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public String getStartDate() {
return startDate;
}
public void setStartDate(String startDate) {
this.startDate = startDate;
}
public Student(int id, String name, String gender, String startDate) {
super();
this.id = id;
this.name = name;
this.gender = gender;
this.startDate = startDate;
}
public Student() {
super();
}
}
bean.xml配置：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<!-- 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:orcl" />
<property name="user" value="sprita1" />
<property name="password" value="sprita1" />
<!--初始化时获取的连接数，取值应在minPoolSize与maxPoolSize之间。Default: 3 -->
<property name="initialPoolSize" value="1" />
<!--连接池中保留的最小连接数。-->
<property name="minPoolSize" value="1" />
<!--连接池中保留的最大连接数。Default: 15 -->
<property name="maxPoolSize" value="300" />
<!--最大空闲时间,60秒内未使用则连接被丢弃。若为0则永不丢弃。Default: 0 -->
<property name="maxIdleTime" value="60" />
<!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->
<property name="acquireIncrement" value="5" />
<!--每60秒检查所有连接池中的空闲连接。Default: 0 -->
<property name="idleConnectionTestPeriod" value="60" />
</bean>
<!-- sessionFactory -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan">
<list>
<value>com.cn.entity.Student</value>
</list>
</property>
<property name="hibernateProperties">
<value>
hibernate.hbm2ddl.auto=create
hibernate.dialect=org.hibernate.dialect.OracleDialect
hibernate.show_sql=true hibernate.format_sql=true
</value>
</property>
</bean>
<!-- hibernateTemplate -->
<bean id="hibernateTemplate"
class="org.springframework.orm.hibernate3.HibernateTemplate">
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean>
<bean id="txManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<!--注解驱动 -->
<tx:annotation-driven transaction-manager="txManager" />
<context:component-scan base-package="com.cn" /><!-- 开启组件扫描 -->
<context:annotation-config /><!-- 开启注解 -->
</beans>
Tester：测试类：
public class Tester {
public static void main(String[] args) {
ApplicationContext cxt = new ClassPathXmlApplicationContext("beans.xml");
StudentService service = (StudentService)cxt.getBean("StudentService");
Student student = new Student();
student.setName("zhansan");
try {
service.addStd(student);
} catch (Exception e) {
e.printStackTrace();
}
}
}
调用测试类时会报找不到相应实体bean的异常，可是我在实体类里用注解和spring配置文件里配置了呀
为什么还找不到呢？？？
异常如下：
org.springframework.orm.hibernate3.HibernateSystemException: Unknown entity: com.cn.entity.Student; nested exception is org.hibernate.MappingException: Unknown entity: com.cn.entity.Student
at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:676)
at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:424)
at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
at org.springframework.orm.hibernate3.HibernateTemplate.saveOrUpdate(HibernateTemplate.java:748)
at com.cn.dao.impl.StudentDaoImpl.addStd(StudentDaoImpl.java:12)
at com.cn.service.impl.StudentServiceImpl.addStd(StudentServiceImpl.java:19)
at com.cn.Tester.main(Tester.java:16)
Caused by: org.hibernate.MappingException: Unknown entity: com.cn.entity.Student
at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:580)
at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1365)
at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:203)
at org.hibernate.event.def.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:535)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:103)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:534)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:526)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:522)
at org.springframework.orm.hibernate3.HibernateTemplate$16.doInHibernate(HibernateTemplate.java:751)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:419)
... 5 more
各位走过路过的神仙们，救救小兄弟把~~~~~~！！！！！
[解决办法]
<property name="packagesToScan">
<list>
<value>com.cn.entity.Student</value>
</list>
packagesToScan 这个属性在 AnnotationSessionFactoryBean这个类中存在？
