hibernate的分頁查詢

setFirstResult(int firstResult) 設置返回結果從第幾條開始 ---- 索引從0開始

setMaxResults(int maxResults) 設置本次返回結果記錄條數

hibernateHql.cfg.xml配置文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
 "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
 "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
 <session-factory>
 <!-- 指定數據庫所用到的驅動 -->
 <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
 <!-- 指定數據庫鏈接的url，hibernate鏈接的數據庫名 -->
 <property name="connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property>
 <!-- 指定連接數據庫的用戶名 -->
 <property name="connection.username">scott</property>
 <!-- 指定連接數據庫的用戶口令 -->
 <property name="connection.password">123156</property>
 <!-- Enable Hibernate's automatic session context management -->
 <property name="current_session_context_class">thread</property>

 <!--格式化sql -->
 <property name="format_sql ">true</property>
 <!-- 打印sql 控制台-->
 <property name="show_sql">true</property>
 <!-- 指定數據庫方言 -->
 <property name="dialect">org.hibernate.dialect.Oracle10gDialect</property>
 <!-- 根據需要自動創建數據庫表 -->
 <property name="hbm2ddl.auto">update</property>
 <!--關聯小配置文件-->
 <mapping resource="cn/day03hql/dynamic/entity/Emp.hbm.xml"></mapping>
 </session-factory>
</hibernate-configuration>


實體類

public class Emp {
    private Integer empno;
 private String ename;
 private String job;
 private Integer mgr;
 private Date hiredate;
 private Integer sal;
 private Integer comm;
 private Integer deptno;

 public Integer getEmpno() {
 return empno;
 }
 public void setEmpno(Integer empno) {
 this.empno = empno;
 }

 public String getEname() {return ename;}
 public void setEname(String ename) {
 this.ename = ename;
 }

 public String getJob() {
 return job;
 }
 public void setJob(String job) {
 this.job = job;
 }

 public Integer getMgr() {
 return mgr;
 }
 public void setMgr(Integer mgr) {
 this.mgr = mgr;
 }

 public Date getHiredate() {
 return hiredate;
 }
 public void setHiredate(Date hiredate) {
 this.hiredate = hiredate;
 }

 public Integer getSal() {
 return sal;
 }
 public void setSal(Integer sal) {
 this.sal = sal;
 }

 public Integer getComm() {
 return comm;
 }
 public void setComm(Integer comm) {
 this.comm = comm;
 }

 public Integer getDeptno() {
 return deptno;
 }
 public void setDeptno(Integer deptno) {
 this.deptno = deptno;
 }
}

小配置文件

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
 "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
 "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- 映射文件開始 -->
<hibernate-mapping package="cn.day03hql.dynamic.entity">
 <!--表名稱-->
 <class name="Emp" table="EMP" schema="scott">
 <!--列名-->
 <id name="empno" column="EMPNO">
 <!--主鍵生成的策略 native：自動生成主鍵字段-->
 <generator class="native"></generator>
 </id>
 <property name="ename" column="ENAME"></property>
 <property name="job" column="JOB"></property>
 <property name="mgr" column="MGR"></property>
 <property name="hiredate" column="HIREDATE"></property>
 <property name="sal" column="SAL"></property>
 <property name="comm" column="COMM"></property>
 <property name="deptno" column="DEPTNO"></property>
 </class>
</hibernate-mapping>

測試類

//分頁查詢
@Test
public void test02(){
 //讀取大配置文件
 Configuration cfg=new Configuration().configure("hibernateHql.cfg.xml");
 //session工廠
 SessionFactory factory=cfg.buildSessionFactory();
 //session對象
 Session session = factory.openSession();
 String hql="from Emp order by empno";
 Query query = session.createQuery(hql);
 int pageIndex=2;
 int pageSize=3;
 query.setFirstResult((pageIndex-1)*pageSize);
 query.setMaxResults(pageSize);
 /* query.setFirstResult(0);
 query.setMaxResults(5);*/
 List<Emp> list = query.list();
 for (Emp item:list){
 System.out.println(item.getEname());
 }
}