1、add dependency
<dependency>
<groupId>io.github.holmofy</groupId>
<artifactId>spring-data-criteria-jpa</artifactId>
<version>${latest-version}</version>
</dependency>Find the latest version here
2、add apt plugin: hibernate-jpamodelgen
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
<annotationProcessorPaths>
<path>
<groupId>org.hibernate.orm</groupId>
<artifactId>hibernate-jpamodelgen</artifactId>
<version>6.1.7.Final</version>
</path>
<!-- other apt plugin -->
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.24</version>
</path>
</annotationProcessorPaths>
</configuration>
</plugin>
</plugins>
</build>3、config Spring Data JPA
@EnableJpaAuditing
@EnableJpaRepositories
@SpringBootApplication
public class MainApplication {
public static void main(String[] args) {
SpringApplication.run(MainApplication.class, args);
}
}4、use dynamic sql
1)、define model
@Data
@Entity
@Table(name = "t_user")
@EntityListeners(AuditingEntityListener.class)
public class User {
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "user_seq")
@SequenceGenerator(name = "user_seq", sequenceName = "t_user_seq", allocationSize = 1)
private Long id;
@Column(name = "nick")
private String name;
// NOTE: jpamodelgen currently does not support @Embedded
private String province;
private String city;
private String area;
@CreatedDate
@Column(name = "created_date")
private LocalDateTime created;
@LastModifiedDate
@Column(name = "last_modified_date")
private LocalDateTime modified;
}2)、Dao interface
public interface UserDao extends JpaRepository<User, Long>, JpaSpecificationExecutor<User> {
default Page<User> searchByQuery(UserQuery query, Pageable pageable) {
return findAll(Specification.where(MoreCriteria.eq(User_.province, query.province))
.and(MoreCriteria.eq(User_.city, query.city))
.and(MoreCriteria.like(User_.area, query.area))
.and(MoreCriteria.like(User_.name, query.nick))
.and(MoreCriteria.between(User_.created, query.createFrom, query.createTo))
, pageable);
}
@Data
class UserQuery {
String nick;
String province;
String city;
String area;
LocalDateTime createFrom;
LocalDateTime createTo;
}
}3)、use Dao
@RestController
public class UserController {
@Autowired
UserDao userDao;
@GetMapping("/search")
public Page<User> search(UserDao.UserQuery query, Pageable pageable) {
return userDao.searchByQuery(query, pageable);
}
}The complete example is here.
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