基于Eclipse Maven的Spring4/Spring-MVC/Hibernate4整合之三：hibernate4泛型dao的应用

   首先将aop代理设置为CGLib动态代理方式，在spring-hibernate.xml里面加上：

<aop:aspectj-autoproxy proxy-target-class="true"/>

   一般比较理想的做法，将dao基类定义为泛型，并带有泛型的接口，在controller/service里面用接口引用，在xml里面配置真正实现的泛型dao类。
   1、先定义支持泛型的dao实现类及其接口：

        public class HibernateEntityDao<T> extends HibernateGenericDao implements

        IHibernateEntityDao<T>  ...

   2、比如现在要做Entity为TaUser的dao实现类，很简单：就指定entity的类型即可：

public class HibernateUserDao extends HibernateEntityDao<TaUser> {
}


  3、个人倾向于dao在spring xml里面配置而不用@Repository注解，因为以后改逻辑什么的，直接在xml里面将实现类指向新的类即可。这在spring-dao.xml里面配置：
<bean id="hibernateUserDao" class="com.freestyle.test.hibernate.dao.HibernateUserDao" />

  4、在controller里面测试,下面代码中，用@Resource方式注入xml里面配置好的hibernateUserDao给接口mvDao：

package com.freestyle.test.hibernate.controller;

import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.context.annotation.DependsOn;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;

import com.freestyle.common.hibernate.dao.interfaces.IHibernateEntityDao;
import com.freestyle.test.hibernate.entities.TaUser;

@Controller
@RequestMapping("/hibernate")
@DependsOn({"hibernateUserDao"})
public class HibernateController implements org.springframework.web.servlet.mvc.Controller{
//@Resource(name="hibernateUserDao")
//private HibernateUserDao lvDao;
//@Resource(name="hibernateUserDao")
@Resource(name="hibernateUserDao")
protected IHibernateEntityDao<TaUser> mvDao;

@RequestMapping("/test")
public ModelAndView test(
@RequestParam(value = "name", defaultValue = "World") String name)
throws SQLException {
System.out.println("Hello " + name);
Map<String, Object> lvMap= new HashMap<String, Object>();
/*TaUser lvUser= lvDao.getUser("dgmislrh");
if (lvUser!=null){
System.out.println(lvUser.getFaName());
}*/
TaUser lvUser=mvDao.get(name);
if (lvUser!=null){
System.out.println(lvUser.getFaName());
lvMap.put("userName", lvUser.getFaName());
}
return new ModelAndView("/hello", lvMap);

}

public ModelAndView handleRequest(HttpServletRequest request,
HttpServletResponse response) throws Exception {
System.out.println(request.getParameterMap().toString());
return null;
}

}
   启动tomcat调试，在浏览器上输入http://localhost/gpchat/hibernate/test?name=dgmislrh，则在控制台显示日志：

Hibernate:
select
tauser0_.fa_login as fa_login1_0_0_,
tauser0_.fa_email as fa_email2_0_0_,
tauser0_.fa_line as fa_line3_0_0_,
tauser0_.fa_manage_by as fa_manag4_0_0_,
tauser0_.fa_name as fa_name5_0_0_,
tauser0_.fa_passwd as fa_passw6_0_0_,
tauser0_.fa_plant as fa_plant7_0_0_,
tauser0_.fa_remark as fa_remar8_0_0_,
tauser0_.fa_role as fa_role9_0_0_,
tauser0_.fa_status as fa_stat10_0_0_,
tauser0_.fa_type as fa_type11_0_0_
from
ta_user tauser0_
where
tauser0_.fa_login=?
17:04:29,606 TRACE BasicBinder:81 - binding parameter [1] as [VARCHAR] - [dgmislrh]
TaUser entity created.
17:04:29,611 TRACE BasicExtractor:78 - extracted value ([fa_email2_0_0_] : [VARCHAR]) - [runhui.li@alco.com.hk]
17:04:29,611 TRACE BasicExtractor:78 - extracted value ([fa_line3_0_0_] : [VARCHAR]) - [*]
17:04:29,611 TRACE BasicExtractor:68 - extracted value ([fa_manag4_0_0_] : [VARCHAR]) - [null]
17:04:29,611 TRACE BasicExtractor:78 - extracted value ([fa_name5_0_0_] : [VARCHAR]) - [陈大文]
17:04:29,612 TRACE BasicExtractor:78 - extracted value ([fa_passw6_0_0_] : [VARCHAR]) - [389468f83cb96feafa750a8e5bae5f731a59f031]
17:04:29,612 TRACE BasicExtractor:78 - extracted value ([fa_plant7_0_0_] : [VARCHAR]) - [DG]
17:04:29,612 TRACE BasicExtractor:78 - extracted value ([fa_remar8_0_0_] : [VARCHAR]) - []
17:04:29,612 TRACE BasicExtractor:78 - extracted value ([fa_role9_0_0_] : [VARCHAR]) - [NA]
17:04:29,612 TRACE BasicExtractor:78 - extracted value ([fa_stat10_0_0_] : [VARCHAR]) - [A]
17:04:29,612 TRACE BasicExtractor:78 - extracted value ([fa_type11_0_0_] : [VARCHAR]) - [A]
陈大文