#开发环境
#端口配置
server.port=8080
#数据库连接配置
spring.datasource.url=jdbc:mysql://localhost/spring_boot_demo?useUnicode=true&characterEncoding=utf-8
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
JPA
spring.jpa.hibernate.ddl-auto= update
spring.jpa.show-sql=true
3、实体类
=====
@Entity
public class RoncooUserLog {
@Id
@GeneratedValue
private Integer id;
@Column
private Date createTime;
@Column
private String userName;
@Column
private String userIp;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Date getCreateTime() {
return createTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserIp() {
return userIp;
}
public void setUserIp(String userIp) {
this.userIp = userIp;
}
@Override
public String toString() {
return “RoncooUserLog [id=” + id + “, createTime=” + createTime + “, userName=”
- userName + “, userIp=” + userIp + “]”;
}
}
4、定义接口（继承 JpaRepository）
=========================
public interface RoncooUserLogDao extends JpaRepository<RoncooUserLog, Integer> {
/**
-
@param string
-
@return
*/
@Query(value = “select u from RoncooUserLog u where u.userName=?1”)
List findByUserName(String userName);
/**
-
@param string
-
@param string2
-
@return
*/
List findByUserNameAndUserIp(String string, String string2);
/**
-
@param exampl
-
@param pageable
-
@return
*/
Page findByUserName(String userName, Pageable pageable);
}
5、测试
====
@RunWith(SpringRunner.class)
@SpringBootTest
public class SpringBootDemo141ApplicationTests {
@Autowired
private RoncooUserLogDao roncooUserLogDao;
@Test
public void insert() {
RoncooUserLog entity = new RoncooUserLog();
entity.setUserName(“无境”);
entity.setUserIp(“192.168.0.1”);
entity.setCreateTime(new Date());
roncooUserLogDao.save(entity);
}
@Test
public void delete() {
roncooUserLogDao.delete(1);
}
@Test
public void update() {
RoncooUserLog entity = new RoncooUserLog();
entity.setId(2);
entity.setUserName(“无境2”);
entity.setUserIp(“192.168.0.1”);
entity.setCreateTime(new Date());
roncooUserLogDao.save(entity);
}
@Test
public void select() {
RoncooUserLog result = roncooUserLogDao.findOne(1);
System.out.println(result);
}
@Test
public void select2() {
List res
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ult = roncooUserLogDao.findByUserName(“无境”);
System.out.println(result);
}
@Test
public void select3() {
List result = roncooUserLogDao.findByUserNameAndUserIp(“无境”, “192.168.0.1”);
System.out.println(result);
}
// 分页
@Test
public void queryForPage() {
Pageable pageable = new PageRequest(0, 20, new Sort(new Order(Direction.DESC, “id”)));
Page result = roncooUserLogDao.findByUserName(“无境”, pageable);
System.out.println(result.getContent());
}
}
