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="dataSo