在JPA的@Query注解中使用limit条件(详解)

在JPA的@Query注解中使用limit条件(详解)

在@Query注解注释的JPQL语句中写limit语句是会报错的

unexpected token :limit near line ....

解决方法是讲@Query注解中的limit语句去掉，然后传一个Pageable pageable=new PageRequest(offset,limit)进去

示例代码：

controller

import java.util.List;

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

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

@RestController

@RequestMapping(value = "/misaka")

public class MisakaController

{

@Autowired

private MisakaService misakaService;

@RequestMapping(value = "/list")

public List getBaselineOverview()

{

return misakaService.getMisaka();

}

}

service

import java.util.List;

public interface MisakaService

{

List getMisaka();

}

serviceimpl

import java.util.List;

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

import org.springframework.data.domain.Page;

import org.springframework.data.domain.PageRequest;

import org.springframework.data.domain.Pageable;

import org.springframework.data.domain.Sort.Direction;

import org.springframework.stereotype.Service;

@Service

public class MisakaServiceImpl implements MisakaService

{

@Autowired

private MisakaDao misakaDao;

@Override

public List getMisaka()

{

Pageable pageable = new PageRequest(1, 2, Direction.ASC, "name");

Page misakaPage = misakaDao.search(pageable);

List misakaList = misakaPage.getContent();

System.out.println(misakaList);

return misakaList;

}

}

dao

import org.springframework.data.domain.Page;

import org.springframework.data.domain.Pageable;

import org.springframework.data.jpa.repository.Query;

import org.springframework.data.repository.CrudRepository;

public interface MisakaDao extends CrudRepository

{

@Query("SELECT m FROM Misaka m WHERE m.id>4")

Page search(Pageable pageable);

}

model

import javax.persistence.Column;

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.GenerationType;

import javax.persistence.Id;

import javax.persistence.Table;

@Entity

@Table(name = "t_test")

public class Misaka

{

@Id

@GeneratedValue(strategy = GenerationType.AUTO)

private Long id;

@Column(name = "name")

private String name;

public Long getId()

{

return id;

}

public void setId(Long id)

{

this.id = id;

}

public String getName()

{

return name;

}

public void setName(String name)

{

this.name = name;

}

@Override

public String toString()

{

return "Misaka [id=" + id + ", name=" + name + "]";

}

}

数据库t_test

id

name

1

m1

2

m2

3

m3

4

m4

5

m5

6

m6

7

m7

8

m8

9

m9

输出

Hibernate: select count(misaka0_.id) as col_0_0_ from t_test misaka0_ where misaka0_.id>4

Hibernate: select misaka0_.id as id1_29_, misaka0_.name as nXklNvsJame2_29_ from t_test misaka0_ where misaka0_.id>4 order by misaka0_.name asc limit ?, ?

[Misaka [id=7, name=m7], Misaka [id=8, name=m8]]

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