<!-- 實(shí)驗(yàn)23：測試泛型依賴注入★ -->

Book.java

package com.atguigu.bean;public class Book {}

User.java

package com.atguigu.bean;public class User {}

BaseDao.java

package com.atguigu.dao;/*** 定義了基本的增刪改查方法*/ public abstract class BaseDao<T> {public abstract void save();}

BookDao.java

package com.atguigu.dao;import org.springframework.stereotype.Repository; import com.atguigu.bean.Book;@Repository public class BookDao extends BaseDao<Book>{@Overridepublic void save() {// TODO Auto-generated method stubSystem.out.println("BookDao....保存圖書。。。");}}

UserDao.java

package com.atguigu.dao;import org.springframework.stereotype.Repository;import com.atguigu.bean.User;@Repository public class UserDao extends BaseDao<User>{@Overridepublic void save() {// TODO Auto-generated method stubSystem.out.println("UserDao...保存用戶....");} }

BaseService.java

package com.atguigu.service;import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service;import com.atguigu.dao.BaseDao;public class BaseService<T> {@Autowiredprivate BaseDao<T> baseDao;public void save(){System.out.println("自動注入的dao："+baseDao);baseDao.save();}}

BookService.java

package com.atguigu.service;import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service;import com.atguigu.bean.Book; import com.atguigu.dao.BaseDao; import com.atguigu.dao.BookDao;@Service public class BookService extends BaseService<Book>{ }

UserService.java

package com.atguigu.service;import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service;import com.atguigu.bean.User; import com.atguigu.dao.UserDao;@Service public class UserService extends BaseService<User>{}

IOCTest.java

package com.atguigu.test;import static org.junit.Assert.*;import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext;import com.atguigu.service.BookService; import com.atguigu.service.UserService;public class IOCTest {@Testpublic void test() {ApplicationContext ioc = new ClassPathXmlApplicationContext("applicationContext.xml");BookService bookService = ioc.getBean(BookService.class);UserService userService = ioc.getBean(UserService.class);bookService.save();userService.save();//父類的類型：com.atguigu.service.BaseService//帶泛型的父類類型：com.atguigu.service.BaseService<com.atguigu.bean.Book>//Spring中可以使用帶泛型的父類類型來確定這個(gè)子類的類型System.out.println(bookService.getClass().getGenericSuperclass());} }

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