Question

Hibernate注解加载实体类文件

没有Hibernate配置文件，交由Spring配置文件管理！ 加上Hibernate注解后，怎么加载实体的JAVA文件啊？

我这样定义的。

<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>

<property name="hibernateProperties">
<props>
<prop key="hibernate.current_session_context_class">thread</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.formate_sql">true</prop>
</props>
</property>
<property name="configurationClass" value="org.hibernate.cfg.AnnotationConfiguration" />
<property name="Gameen" ref="Gameentity" />
</bean>

<bean id="Gameentity" class="baby.entity.Gameentity" />

上面的 <property name="Gameentity" ref="Gameentity" />就抱错Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener

请问是哪里的问题？ 请指点下，谢谢
2011-03-12 08:59:22 Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'Gameen' of bean class [org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean]: Bean property 'Gameen' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
Caused by:
org.springframework.beans.NotWritablePropertyException: Invalid property 'Gameen' of bean class [org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean]: Bean property 'Gameen' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:793)

Answer 1

注解加载实体类文件代码如下：

package com.bird.user.entity; 
import javax.persistence.Entity;
import javax.persistence.Table;
import javax.persistence.Id;
@Entity
@Table(name = "user")
public class User { 
   private int  id           ;    
   @Id 
   public int getId() {
        return id;
    } 
    public void setId(int id) {
        this.id = id;
    } 
}

如果不用注解 ，需要在spring.xml中增加如下代码。
 <property name="mappingResources">
      <list>
       <value>com/bird/user/entity/User.hbm.xml</value>
      </list>
    </property>

Answer 2

看的我头痛眼花，不过我可以指点你下，你用的注解是吧？那么请问你的配置文件里面有没有引进注解需要的各种头文件:
xmlns:context="http://www.springframework.org/schema/context"
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
<context:annotation-config/>
还有你的命名,你的springconfg里面配置的bean名称要和你的action里面的名称一样，假如你配置的dao或者是service、那么就要实现借口。在action里面应是写借口，因为spring是面试借口编程的。

Answer 3

sessionFactoty这个bean配置有错误？ 数据源的配置能不能贴出来看看

Answer 4

去掉
<bean id="Gameentity" class="baby.entity.Gameentity" />
配置文件修改如下：
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="hibernateProperties" ref="hibernateProperties" />
<property name="packagesToScan" value="baby/entity/"></property>//关键是这句
</bean>

追问

//关键是这句

这句啥意思 定义包下？

追答

意思是把此路径下的所有bean都是自动扫描加载进来，方便后续操作