注解：

controller

@Autowiredprivate UserService userService;

service實(shí)體類

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

mapper

@Repository

controller 接收數(shù)據(jù)
=> service 邏輯中轉(zhuǎn)
=> dao 數(shù)據(jù)庫(kù)查詢
=> domain bean類映射
=>
service=>controller 返回?cái)?shù)據(jù)

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(shí)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(jié)

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