package com.ljh35.service.impl; import com.ljh35.dao.UserDao; import com.ljh35.service.UserService; import org.springframework.stereotype.Service; import javax.annotation.Resource; @Service("userService") public class UserServiceImpl implements UserService { @Resource(name="userDao") private UserDao userdao; @Override public void save(){ this.userdao.findById(); System.out.println("执行UserServiceImpl.findById()"); } }