业务层|业务层 - taotao-manager-service 业务层-taotao-manager-service

目录结构
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【业务层|业务层 - taotao-manager-service】taotao-manager com.taotao 1.0-SNAPSHOT 4.0.0taotao-manager-service com.taotao taotao-manager-dao 1.0-SNAPSHOT org.springframework spring-aop org.springframework spring-aspects org.springframework spring-beans org.springframework spring-context org.springframework spring-context-support org.springframework spring-core org.springframework spring-expression org.springframework spring-jdbc org.springframework spring-tx org.springframework spring-web org.springframework spring-webmvc org.springframework spring-orm

定义业务接口

package com.taotao.service; import com.taotao.pojo.User; import org.slf4j.LoggerFactory; public interface UserService {User userById(int i ); }

定义业务实现

package com.taotao.service.impl; import com.taotao.mapper.UserMapper; import com.taotao.pojo.User; import com.taotao.service.UserService; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; @Service public class IUserService implements UserService { final static Logger logger = LoggerFactory.getLogger(IUserService.class); @Autowired private UserMapper userMapper; @Override public User userById(int i) {System.out.println("service "+i); User user = userMapper.selectByPrimaryKey(i); System.out.println(user); return user; } }

主要处理一些业务，事务，查询，缓存，