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使用hibernate进行增删改查

2011-10-03 23:56 239 查看

这篇文章是接着“第一个spring程序来写的”，只是在这上面加了一些补充简单的使用了下hql

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE hibernate-mapping PUBLIC

"-//Hibernate/Hibernate Mapping DTD 3.0//EN"

"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping package="org.lxh.vo">

<class name="StudentInfo" table="m_student">

<id name="fid" column="fid">

<generator class="increment"/>

</id>

<property name="username" column="username"/>

<property name="password" column="password"/>

</class>

</hibernate-mapping>

前面的东西一样，只需在junit里加一下代码就可以了，代码如下所示

package org.lxh.test;

import org.hibernate.HibernateException;

import org.hibernate.Query;

import org.hibernate.Session;

import org.hibernate.Transaction;

import org.lxh.util.HibernateUtil;

import org.lxh.vo.StudentInfo;

public class TestUnit {

@org.junit.Test

public void add() {

Session session = null;

Transaction tra = null;

// 通过工具类取得session

try {

session = HibernateUtil.getSession();

tra = session.beginTransaction();

StudentInfo info = new StudentInfo();

info.setPassword("123456");

info.setUsername("潘玮柏");

session.save(info);

tra.commit();

} catch (HibernateException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} finally {

if (session != null) {

session.close();

}

}

}

@org.junit.Test

public void delete() {

Session session = null;

Transaction tra = null;

// 通过工具类取得session

try {

session = HibernateUtil.getSession();

tra = session.beginTransaction();

StudentInfo info = new StudentInfo();

info.setFid(1);

session.delete(info);

tra.commit();

} catch (HibernateException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} finally {

if (session != null) {

session.close();

}

}

}

@org.junit.Test

public void update() {

Session session = null;

Transaction tra = null;

// 通过工具类取得session

try {

session = HibernateUtil.getSession();

tra = session.beginTransaction();

StudentInfo info = new StudentInfo();

info.setFid(3);

info.setPassword("12345");

info.setUsername("蔡依林");

session.update(info);

tra.commit();

} catch (HibernateException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} finally {

if (session != null) {

session.close();

}

}

}

@org.junit.Test

public void updatePassword() {

Session session = null;

Transaction tra = null;

// 通过工具类取得session

try {

session = HibernateUtil.getSession();

tra = session.beginTransaction();

Query q=session.createQuery("update StudentInfo set username=? where fid=?");

q.setString(0, "刘若英");

q.setInteger(1, 3);

q.executeUpdate();

tra.commit();

} catch (HibernateException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} finally {

if (session != null) {

session.close();

}

}

}

}

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标签： hibernate user session generator class encoding

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