一、基于XML的装配

（1）构造注入方式装配

    User类：

public class User {    private String username;    private Integer password;    private List
     
       list;    public User(){    }    public User(String username, Integer password, List
      
        list) {        this.username = username;        this.password = password;        this.list = list;    }    @Override    public String toString() {        return "User{" +                "username='" + username + '\'' +                ", password=" + password +                ", list=" + list +                '}';    }}
      
     

      Test类：

public class Test {    public static void main(String[] args) {        ApplicationContext context = new ClassPathXmlApplicationContext("com/chauncey/ioc/beans.xml");        User user = (User) context.getBean("userOne");        System.out.println(user);    }}

    beans.xml:

     
       
            
             
             
                 
                      
         
          "我是构造注入方式"
                       
         
          "我是构造注入方式"
                   
              
         
      
     

       运行结果：

 

（2）设值注入方式装配

    User类：

public class User {    private String username;    private Integer password;    private List
     
       list;    public User(){    }    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public Integer getPassword() {        return password;    }    public void setPassword(Integer password) {        this.password = password;    }    public List
      
        getList() {        return list;    }    public void setList(List
       
         list) {        this.list = list;    }    @Override    public String toString() {        return "User{" +                "username='" + username + '\'' +                ", password=" + password +                ", list=" + list +                '}';    }}
       
      
     

    beans.xml:

             
              
              
                  
                       
        
         "我是设值注入方式"
                        
        
         "我是设值注入方式"
                    
               
          
     

        运行结果：

 

二、基于注解

   创建UserDao接口和UserService接口，在两个中添加save方法，创建两个接口的实现类UserDaoImpl和UserServiceImpl

   UserDaoImpl接口：

@Repository("userDao")public class UserDaoImpl implements UserDao {    @Override    public void save() {        System.out.println("UserDao...Save...");    }}

 　　UserServiceImpl：

@Service("userService")public class UserServiceImpl implements UserService {    @Resource(name = "userDao")    private UserDao userDao;    @Override    public void save() {        userDao.save();        System.out.println("UserService...Save...");    }}

        UserController:

@Controller("userController")public class UserController {    @Resource(name = "userService")    private UserService userService;    public void save() {        userService.save();        System.out.println("Controller...Save...");    }}

       Test类：

public class Test {    public static void main(String[] args) {        ApplicationContext context = new ClassPathXmlApplicationContext("com/chauncey/user/bean.xml");        UserController controller = (UserController) context.getBean("userController");        controller.save();    }}

　　bean.xml:

       运行结果：

 

三、自动装配

   以注解的案例，在UserServiceImpl中添加setUserDao方法，在UserController中添加setUserService方法

　　 bean.xml: