注解：

controller

@Autowiredprivate UserService userService;

service實體類

@Service("userService")@Autowiredprivate UserMapper userMapper;

mapper

@Repository

controller 接收數據
=> service 邏輯中轉
=> dao 數據庫查詢
=> domain bean類映射
=>
service=>controller 返回數據

Controller層

@Autowired private BlogService blogService;@RequestMapping(value = "/findAll", produces = "application/json;charset=utf-8")@ResponseBodypublic List<Good> findAll(){List<Good> list = goodService.findAll();return list;}

service層

interface 層

GoodService.java

public interface GoodService {List<Good> findAll(); }

impl中的實體類

GoodServiceImpl.java

@Service("goodService")public class GoodServiceImpl implements GoodService {@Autowiredprivate GoodDao goodDao;@Overridepublic List<Good> findAll() {return goodDao.findAll();}}

dao層

public interface GoodDao {@Select("select * from good")List<Good> findAll(); }

domain層

public class Good implements Serializable {..... }

總結

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