spring自动注入并过滤的问题

0 0

spring自动注入并过滤的问题0

接口：com.eman.menu.dao.MenuDao

两个实现类：
com.eman.menu.dao.impl.oracle.MenuDaoImpl
com.eman.menu.dao.impl.mssql.MenuDaoImpl

事件类代码：
@Service
@Transactional
public class MenuService {

@Resource
private MenuDao menuDao;

public List<Menu> queryAllMenu() {
System.out.println("------------");

return this.menuDao.findList();
}

public void query() {

}
}

applicationContext.xml 配置
<context:component-scan base-package="com.eman.*.dao" >
<context:exclude-filter type="regex" expression="com.eman.*.dao.impl.oracle.*"/>
</context:component-scan>

我的目的：
我想通过配置指定spring自动注入实现类的，比如上面的配置我想MenuDao menuDao 对象是获得oracle包下的对象，而不mssql包下的对象。

目前的错误信息是，它同时加载了两个对象，一个是mssql下的，一个是oracle下的，我试过很多次，都不能解决这个问题。我把报错的信息贴出来
org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from class path resource [applicationContext.xml]; nested exception is org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'MenuDao' for bean class [com.eman.menu.dao.impl.oracle.MenuDaoImpl] conflicts with existing, non-compatible bean definition of same name and class [com.eman.menu.dao.impl.mssql.MenuDaoImpl]

问题补充：最新测试结果：
<context:component-scan base-package="com.eman.*.dao.*" use-default-filters="true">
<context:exclude-filter type="regex" expression="com.eman.*.dao.impl.oracle.*"/>
</context:component-scan>
它获取的mssql包下的对象，运行成功

<context:component-scan base-package="com.eman.*.dao.*" use-default-filters="true">
<context:exclude-filter type="regex" expression="com.eman.*.dao.impl.mssql.*"/>
</context:component-scan>

则报错：
java.lang.ClassCastException: com.eman.core.dao.impl.oracle.SysInitDaoImpl cannot be cast to com.eman.core.dao.impl.mssql.SysInitDaoImpl
at com.eman.core.service.SysInitService.contextInitialized(SysInitService.java:30)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3827)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4334)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:566)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
2012-7-26 14:45:38 org.apache.catalina.core.StandardContext start

问题补充：已经解决，配置是正确的，只是其它代码写错了。