准备
Spring boot整合jdbc访问mysql数据库。
- IDEA
- mysql
集成过程
1.初始化mysql测试表
DROP TABLE IF EXISTS `tb_spring`;
CREATE TABLE `tb_spring` (
`id` int(11) NOT NULL AUTO_INCREMENT COMMENT 'id',
`name` varchar(50) DEFAULT NULL COMMENT '名称',
`mobile` varchar(11) DEFAULT NULL COMMENT '手机号',
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8 ROW_FORMAT=COMPACT;
INSERT INTO `tb_spring` VALUES ('1', '张三三', '15212345678');
INSERT INTO `tb_spring` VALUES ('2', '李四', '15233334444');
INSERT INTO `tb_spring` VALUES ('3', '王五', '15788889999');
INSERT INTO `tb_spring` VALUES ('4', '赵六', '15900000000');
INSERT INTO `tb_spring` VALUES ('5', '田琪琪', '13800001111');
INSERT INTO `tb_spring` VALUES ('6', '添加试试', '15288881111');
2.创建spring boot工程，添加相关依赖：
<!--web支持-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--jdbc-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<!--mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
3.添加配置信息，这里使用yml文件
spring:
datasource:
name: datasource
driverClassName: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/spring
username: root
password: 123456
4.具体实现
用户实体对象
@Data
public class User {
private Integer id;
private String name;
private String mobile;
}
DAO
public interface IUserDao {
User queryUserById(int id);
List<User> queryUserList();
int updateUserById(User user);
int insertUser(User user);
int deleteUserById(int id);
}
DAO实现类
@Repository
public class UserDaoImpl implements IUserDao {
@Autowired
private JdbcTemplate jdbcTemplate;
@Override
public User queryUserById(int id) {
String sql = "select * from tb_spring where id = ?";
List<User> list = jdbcTemplate.query(sql, new Object[]{id}, new BeanPropertyRowMapper(User.class));
if (list != null && list.size() > 0) {
return list.get(0);
} else {
return null;
}
}
@Override
public List<User> queryUserList() {
String sql = "select * from tb_spring";
List<User> list = jdbcTemplate.query(sql, new Object[]{}, new BeanPropertyRowMapper(User.class));
if (list != null && list.size() > 0) {
return list;
} else {
return null;
}
}
@Override
public int updateUserById(User user) {
String sql = "update tb_spring set name = ?, mobile = ? where id = ?";
return jdbcTemplate.update(sql, user.getName(), user.getMobile(), user.getId());
}
@Override
public int insertUser(User user) {
String sql = "insert into tb_spring(name,mobile) values(?, ?)";
return jdbcTemplate.update(sql, user.getName(), user.getMobile());
}
@Override
public int deleteUserById(int id) {
String sql = "delete from tb_spring where id = ?";
return jdbcTemplate.update(sql, id);
}
}
service
public interface IUserService {
User queryUserById(int id);
List<User> queryUserList();
int updateUserById(User user);
int insertUser(User user);
int deleteUserById(int id);
}
service实现类
@Service
public class UserServiceImpl implements IUserService {
@Autowired
private IUserDao userDao;
@Override
public User queryUserById(int id) {
return userDao.queryUserById(id);
}
@Override
public List<User> queryUserList() {
return userDao.queryUserList();
}
@Override
public int updateUserById(User user) {
return userDao.updateUserById(user);
}
@Override
public int insertUser(User user) {
return userDao.insertUser(user);
}
@Override
public int deleteUserById(int id) {
return userDao.deleteUserById(id);
}
}
web
@RestController
public class UserController {
@Autowired
private IUserService userService;
/**
* 根据id查询用户信息
*
* @param id
* @return
*/
@RequestMapping(value = "/queryUserById/{id}", method = RequestMethod.GET)
public User getUserById(@PathVariable("id") int id) {
return userService.queryUserById(id);
}
/**
* 查询用户信息列表
*
* @return
*/
@RequestMapping(value = "/queryUserList", method = RequestMethod.GET)
public List<User> queryUserList() {
return userService.queryUserList();
}
/**
* 根据id更新用户信息
*
* @param id
* @param name
* @param mobile
* @return
*/
@RequestMapping(value = "/updateUserById/{id}", method = RequestMethod.GET)
public String updateUserById(@PathVariable("id") int id,
@RequestParam(value = "name") String name,
@RequestParam(value = "mobile") String mobile) {
User user = new User();
user.setId(id);
user.setName(name);
user.setMobile(mobile);
int res = userService.updateUserById(user);
if (res == 0) {
return "update failed";
}
return "update success->" + user.toString();
}
/**
* 添加用户信息
*
* @param name
* @param mobile
* @return
*/
@RequestMapping(value = "/insertUserPost", method = RequestMethod.POST)
public String insertUser(@RequestParam(value = "name") String name,
@RequestParam(value = "mobile") String mobile) {
User user = new User();
user.setName(name);
user.setMobile(mobile);
int res = userService.insertUser(user);
if (res == 0) {
return "insert failed";
}
return "insert success->" + user.toString();
}
/**
* 根据id删除用户
*
* @param id
* @return
*/
@RequestMapping(value = "/deleteUserById/{id}", method = RequestMethod.GET)
public String deleteUserById(@PathVariable("id") int id) {
int res = userService.deleteUserById(id);
if (res == 0) {
return "delete failed";
}
return "delete success";
}
}