Spring注解配置三层

applicaltionContext.xml

<?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"     
    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">     
    <!-- 配置搜索的Bean所在包的位置 -->  
   <context:component-scan base-package="com.zl.action"/>      
   <context:component-scan base-package="com.zl.biz"/> 
</beans> 

控制器配置

package org.slsk.action;

import javax.annotation.Resource;

import org.slsk.biz.SeasonService;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;

import com.opensymphony.xwork2.ActionContext;

@Scope("prototype") //设置action为原型的
@Controller("indexAction")  //表示为控制器 'indexAction'为beanId
public class IndexAction extends AbstractActionSupport{

	private static final long serialVersionUID = 897641176074745343L;
	
	private SeasonService saService;
         //注入业务层对象saService
	@Resource(name="saService")
	public void setSaService(SeasonService saService) {
		this.saService = saService;
	}

	@Override
	public String execute() throws Exception {
		ActionContext.getContext().put("list", saService.searchSeasonings());
		return SUCCESS;
	

业务层

package org.slsk.biz;

import java.util.List;

import org.slsk.entity.User;
import org.springframework.stereotype.Service;

@Service("userService")  //表示为业务bean  
public class UserService extends AbstractBizSupport {
	
	@SuppressWarnings("unchecked")
	public boolean checkUserByUsername(String username) throws Exception{
		List<User> list =  ht.find("select u from User u where u.username = ?",username);
		return (null==list || list.size()==0)?true:false;
	}
}

DAO层

  
//表示为数据访问层 
@Resource("userDAO")   
public class UserDAOImp implements UserDAO {   
    public void add(User user) {   
        System.out.println(user.getUsername());       }   
}