DEMO

依赖

<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
</dependencies>

配置

server:
port: 8080
spring:
datasource:
url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8
username: root
password: root
driver-class-name: com.mysql.cj.jdbc.Driver # mysql8推荐使用cj.jdbc， com.mysql.jdbc.Driver不推荐使用了
#数据库连接池默认使用 tomcat-jdbc
tomcat:
max-idle: 10
min-idle: 1
initial-size: 1

实体

@Data
public class User {
private int id;
private String name;
private int age;
private String phoneNumber;
private boolean available;
private Date createTime = new Date();
}

使用jdbc

@RestController
@RequestMapping("/user")
public class UserResource {

@Autowired private JdbcTemplate jdbcTemplate;

@GetMapping("")
public List list(){
List<Map<String, Object>> list = jdbcTemplate.queryForList("select * from user");
return list;
}

@PostMapping("")
public User add(@RequestBody User user){
String sql = "insert into user(name,age) values(?, ?)";
jdbcTemplate.update(connection -> {
PreparedStatement ps= connection.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);
ps.setString(1,user.getName());
ps.setInt(2,user.getAge());
return ps;
});
return user;
}
}

测试

当前数据库数据：

查询

GET http://localhost:8080/user

返回

[
{
"id": 1,
"name": "张三",
"phone_number": "15500000001",
"create_time": "2018-12-02T12:20:32.000+0000",
"age": 20,
"available": false
},
{
"id": 2,
"name": "李四",
"phone_number": "15500000002",
"create_time": "2018-12-01T13:04:56.000+0000",
"age": 0,
"available": false
},
{
"id": 3,
"name": "王五",
"phone_number": "15500000003",
"create_time": "2018-12-01T13:05:02.000+0000",
"age": 0,
"available": false
}
]

添加

POST http://localhost:8080/user

请求数据：

{
"name":"add1",
"age":100
}

再次查询GET http://localhost:8080/user返回：

[
{
"id": 1,
"name": "张三",
"phone_number": "15500000001",
"create_time": "2018-12-02T12:20:32.000+0000",
"age": 20,
"available": false
},
{
"id": 2,
"name": "李四",
"phone_number": "15500000002",
"create_time": "2018-12-01T13:04:56.000+0000",
"age": 0,
"available": false
},
{
"id": 3,
"name": "王五",
"phone_number": "15500000003",
"create_time": "2018-12-01T13:05:02.000+0000",
"age": 0,
"available": false
},
{
"id": 6,
"name": "add1", #新加的数据
"phone_number": "1001",
"create_time": "2018-12-03T08:27:46.000+0000",
"age": 100,
"available": false
}
]

项目源码

https://gitee.com/yimingkeji/springboot/tree/master/jdbc