SSH框架-持久层搭建

SSH框架-持久层搭建

 

1、首先编写javabean对象（也就是配置数据库字段）

 

package com.caicai.elec.doamin;
import java.util.Date;

public class ElecText implements java.io.Serializable {
//定义数据库字段
     private String textID;
     private String textName;
     private Date textDate;
     private String textRemark;
//配置get set 方法
    public String getTextID() {
        return textID;
    }

    public String getTextName() {
        return textName;
    }

    public Date getTextDate() {
        return textDate;
    }

    public String getTextRemark() {
        return textRemark;
    }

    public void setTextID(String textID) {
        this.textID = textID;
    }

    public void setTextName(String textName) {
        this.textName = textName;
    }

    public void setTextDate(Date textDate) {
        this.textDate = textDate;
    }

    public void setTextRemark(String textRemark) {
        this.textRemark = textRemark;
    }
}

 

2、编写数据库映射配置文件（*.hbm.xml）

         

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

<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class name="com.caicai.elec.doamin.ElecText" table="Elec_Text">
       <id name="textID" type="java.lang.String">
          <column name="textID" not-null="true" sql-type="varchar(50)"/>
           <generator class="uuid"/>
       </id>

        <property name="textName" type="java.lang.String">
          <column name="textName" sql-type="varchar(50)"/>
        </property>

        <property name="TextDate" type="java.util.Date">
            <column name="TextDate" length="50"/>
        </property>

        <property name="textRemark" type="java.lang.String">
            <column name="textRemark" sql-type="varchar(500)"/>


        </property>

    </class>


</hibernate-mapping>

 

3、编写Hibernate连接数据库配置（hibetnate.cfg.xml）

     

<?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>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.connection.password">123456</property>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/caicai2021elec</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
        <property name="hibernate.hbm2ddl.auto">update</property>
        <property name="hibernate.show_sql">true</property>
        <!--添加映射地址-->
        <mapping resource="com/caicai/elec/doamin/EcecText.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

 

4、编写测试用例

    

package junit;

import com.caicai.elec.doamin.ElecText;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.junit.Test;

import java.util.Date;

public class TestHibernate {
    @Test
    public void testElecText(){
        //加载配置文件
        Configuration config = new Configuration();
        //加载hibernate.cfg.xml 默认在跟目录下
        config.configure();
        //创建seessionFactory
        SessionFactory sf = config.buildSessionFactory();
        //打开session 操作数据库
        Session session =  sf.openSession();
        
        //开启事务
        Transaction tr = session.beginTransaction();

        //实例化对象
        ElecText elecText = new ElecText();

        elecText.setTextName("Hibernate_test_name111");

        elecText.setTextRemark("Hibernate success insert!11111");

        elecText.setTextDate(new Date());
        //保存
        session.save(elecText);
        //提交事务
        tr.commit();
        //关闭会话
        session.close();





    }


}

 

 

 

 

 

 文件架构