黑马程序员--用户注册登录管理系统…

--------android培训java培训期待与您交流------

package cn.itcast.dao.impl;

import java.util.List;

import
org.springframework.beans.factory.annotation.Autowired;

import
org.springframework.jdbc.core.simple.ParameterizedBeanPropertyRowMapper;

import
org.springframework.jdbc.core.simple.SimpleJdbcTemplate;

import org.springframework.stereotype.Repository;

import
org.springframework.transaction.annotation.Propagation;

import
org.springframework.transaction.annotation.Transactional;

import cn.itcast.dao.UserDao;

import cn.itcast.domain.User;

import cn.itcast.util.JdbcUtils;

@SuppressWarnings("deprecation")

@Repository

public class UserDaoSpringImpl implements UserDao
{ @Autowired private SimpleJdbcTemplate
simpleJdbcTemplate;  @Override @Transactional(propagation =
Propagation.REQUIRED) public boolean add(User user) {  String sql = "insert into
user(username,password,email,birthday,nickname)
values(?,?,?,?,?)";  Object[] args = new Object[] {
user.getUsername(), user.getPassword(),    user.getEmail(),
user.getBirthday(), user.getNickname() };  return
simpleJdbcTemplate.update(sql, args) == 1 ? true : false; }

@Override @Transactional(propagation =
Propagation.NOT_SUPPORTED) public User find(String username, String
password) {  String sql = "select
username,password,email,birthday,nickname from user where
username=? and password=?";  Object[] args = new Object[] {
username, password };  List<User>
users = simpleJdbcTemplate.query(sql,    ParameterizedBeanPropertyRowMapper.newInstance(User.class),    args);

//如果这个集合中是空，说明没找到则返回null；  return users.isEmpty() ? null :
users.get(0); }

DAO层由Spring的SimpleJdbcTemplate接管，其中用到了基于注解方式的声明式事务管理和基于注解方式实现的bean装配与依赖注入；

开发完DAO层后，测试通过，然后抽取接口UserDao；



转发至微博
 



转发至微博