017——hibernate条件查询

实体类以及映射文件参考015篇

测试类：

package test;

import java.text.SimpleDateFormat;
import java.util.Iterator;
import java.util.List;

import junit.framework.TestCase;

import org.hibernate.Session;

import com.java.hibernate.HibernateUtils;

public class SimpleConditionQueryTest extends TestCase {

public void testQuery1() {
Session session = null;
try {
session = HibernateUtils.getSession();
session.beginTransaction();

List students = session.createQuery("select s.id, s.name from Student s where s.name like '%0%'").list();
for (Iterator iter=students.iterator(); iter.hasNext();) {
Object[] obj = (Object[])iter.next();
System.out.println(obj[0] + "------" + obj[1]);
}

session.getTransaction().commit();
} catch (Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
} finally {
HibernateUtils.closeSession(session);
}
}

public void testQuery2() {
Session session = null;
try {
session = HibernateUtils.getSession();
session.beginTransaction();
//可以使用？方式传递参数
//索引从0开始，不同于jdbc从1开始
//值能使用单引号引起来
//List students = session.createQuery("select s.id, s.name from Student s where s.name like ?").list();
//Query query = session.createQuery("select s.id, s.name from Student s where s.name like ?");
//query.setParameter(0, "%0%");
//List students = query.list();
//方法链编程，建议采用此种方式
List students = session.createQuery("select s.id, s.name from Student s where s.name like ?")
.setParameter(0, "%0%")
.list();
for (Iterator iter=students.iterator(); iter.hasNext();) {
Object[] obj = (Object[])iter.next();
System.out.println(obj[0] + "------" + obj[1]);
}
session.getTransaction().commit();
}catch(Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
}finally {
HibernateUtils.closeSession(session);
}
}

public void testQuery3() {
Session session = null;
try {
session = HibernateUtils.getSession();
session.beginTransaction();
//可以采用 :参数名 的方式传递参数
List students = session.createQuery("select s.id, s.name from Student s where s.name like :itachi")
.setParameter("itachi", "%0%")
.list();
for (Iterator iter=students.iterator(); iter.hasNext();) {
Object[] obj = (Object[])iter.next();
System.out.println(obj[0] + "------" + obj[1]);
}
session.getTransaction().commit();
}catch(Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
}finally {
HibernateUtils.closeSession(session);
}
}

public void testQuery4() {
Session session = null;
try {
session = HibernateUtils.getSession();
session.beginTransaction();
//采用 ？方式，查询学号为1,2,3,4,5的学生
List students = session.createQuery("select s.id, s.name from Student s where s.id in(?, ?, ?, ?, ?)")
.setParameter(0, 1)
.setParameter(1, 2)
.setParameter(2, 3)
.setParameter(3, 4)
.setParameter(4, 5)
.list();
for (Iterator iter=students.iterator(); iter.hasNext();) {
Object[] obj = (Object[])iter.next();
System.out.println(obj[0] + "------" + obj[1]);
}
session.getTransaction().commit();
}catch(Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
}finally {
HibernateUtils.closeSession(session);
}
}

public void testQuery5() {
Session session = null;
try {
session = HibernateUtils.getSession();
session.beginTransaction();
//采用 :参数名 方式，查询学号为1,2,3,4,5的学生
List students = session.createQuery("select s.id, s.name from Student s where s.id in(:ids)")
.setParameterList("ids", new Object[]{1, 2, 3, 4, 5})
.list();
for (Iterator iter=students.iterator(); iter.hasNext();) {
Object[] obj = (Object[])iter.next();
System.out.println(obj[0] + "------" + obj[1]);
}
session.getTransaction().commit();
}catch(Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
}finally {
HibernateUtils.closeSession(session);
}
}

public void testQuery6() {
Session session = null;
try {
session = HibernateUtils.getSession();
session.beginTransaction();
//查询2016-07的学生，可以调用mysql的日期格式化函数
List students = session.createQuery("select s.id, s.name from Student s where date_format(s.createTime, '%Y-%m')=?")
.setParameter(0, "2016-07")
.list();
for (Iterator iter=students.iterator(); iter.hasNext();) {
Object[] obj = (Object[])iter.next();
System.out.println(obj[0] + "------" + obj[1]);
}
session.getTransaction().commit();
}catch(Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
}finally {
HibernateUtils.closeSession(session);
}
}

public void testQuery7() {
Session session = null;
try {
session = HibernateUtils.getSession();
session.beginTransaction();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
//查询2009-08-01 到2009-08-20的学生，可以调用mysql的日期格式化函数
List students = session.createQuery("select s.id, s.name from Student s where s.createTime between ? and ?")
.setParameter(0, sdf.parse("2016-07-01 00:00:00"))
.setParameter(1, sdf.parse("2016-07-20 23:59:59"))
.list();
for (Iterator iter=students.iterator(); iter.hasNext();) {
Object[] obj = (Object[])iter.next();
System.out.println(obj[0] + "------" + obj[1]);
}
session.getTransaction().commit();
}catch(Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
}finally {
HibernateUtils.closeSession(session);
}
}
}