Spring-IOC实现【02-XML配置方式案例】

ゝ一纸荒年。 2022-02-19 16:53 191阅读 0赞

### 项目总体图： ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDUwMjgwNA_size_16_color_FFFFFF_t_70]

### Dao层 ###

package com.sxt.dao;
    
    public interface IUserDao {
    	public String add();
    }

package com.sxt.dao.Impl;
    
    import com.sxt.dao.IUserDao;
    
    public class UserDaoImpl implements IUserDao {
    
    	@Override
    	public String add() {
    		// TODO Auto-generated method stub
    		return "hello ... ";
    	}
    }

### Service层 ###

package com.sxt.service;
    
    public interface IUserService {
    	public String add();
    }

package com.sxt.service.Impl;
    
    import com.sxt.dao.IUserDao;
    import com.sxt.service.IUserService;
    
    
    public class UserServiceImpl implements IUserService {
    
    	private IUserDao dao; 
    	// 设值注入 必须的方法
    	public void setDao(IUserDao dao) {
    		this.dao = dao;
    	}
    
    	@Override
    	public String add() {
    		return dao.add();
    	}
    }

### Controller层 ###

package com.sxt.controller;
    
    import com.sxt.service.IUserService;
    
    /**
     * 控制层
     * @author dpb
     *
     */
    public class UserController {
    	
    	private IUserService service;
    	
    	// 设值注入必须的方法
    	public void setService(IUserService service) {
    		this.service = service;
    	}
    	public String add(){
    		return service.add();
    	}
    }

实现：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDUwMjgwNA_size_16_color_FFFFFF_t_70 1]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDUwMjgwNA_size_16_color_FFFFFF_t_70]: /images/20220219/44cc469cd77f486babdb0105808e77f7.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDUwMjgwNA_size_16_color_FFFFFF_t_70 1]: /images/20220219/f04343b8c8c2432889720eb03f211da8.png