hibernate 实例一

原创

xiaoshiyilan119 2013-09-08 01:45:00 博主文章分类：hibernate ©著作权

文章标签 mysql hibernate 中文配置文件连接数据库 文章分类 MySQL 数据库

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工程目录结构：

hibernate.cfg.xml配置文件：

因为我使用的mysql数据库，在连接数据库时，添加如下红色标记的编码格式，这样往库中添加中文数据时不会产生乱码。

<?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="dialect">org.hibernate.dialect.MySQLDialect</property>
  <property name="connection.url">jdbc:mysql://localhost:3306/schoolmanage?‍c‍haracterEncoding=utf8</property>
  <property name="connection.username">root</property>
  <property name="connection.password">admin</property>
  <property name="connection.driver_class">com.mysql.jdbc.Driver</property>

  <property name="show_sql">true</property>
  <property name="format_sql">true</property>
  <property name="current_session_context_class">thread</property>

  <mapping resource="com/wujing/config/Guestbook.hbm.xml" />

</session-factory>

</hibernate-configuration>

GuestBook.java 实体类：

package com.wujing.bean;

public class GuestBook {

private Integer id;
private String name;
private String email;
private String phone;
private String title;
private String content;
private String createdTime;

public GuestBook() {
}

public GuestBook(Integer id, String name, String email, String phone,
   String title, String content, String createdTime) {
  this.id = id;
  this.name = name;
  this.email = email;
  this.phone = phone;
  this.title = title;
  this.content = content;
  this.createdTime = createdTime;
}

public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getEmail() {
return email;
}

public void setEmail(String email) {
this.email = email;
}

public String getPhone() {
return phone;
}

public void setPhone(String phone) {
this.phone = phone;
}

public String getTitle() {
return title;
}

public void setTitle(String title) {
this.title = title;
}

public String getContent() {
return content;
}

public void setContent(String content) {
this.content = content;
}

public String getCreatedTime() {
return createdTime;
}

public void setCreatedTime(String createdTime) {
this.createdTime = createdTime;
}
}

GuestBook.hbm.xml 映射关系配置文件：

<?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.wujing.bean.GuestBook" table="guestbook" catalog="schoolmanage">
        <id name="id" type="java.lang.Integer">
            <column name="id" />
            <generator class="increment" />
        </id>
        <property name="name" type="java.lang.String">
            <column name="name" not-null="true" />
        </property>
        <property name="email" type="java.lang.String">
            <column name="email" />
        </property>
        <property name="phone" type="java.lang.String">
            <column name="phone" />
        </property>
        <property name="title" type="java.lang.String">
            <column name="title" />
        </property>
        <property name="content" type="java.lang.String">
            <column name="content" />
        </property>
        <property name="createdTime" type="java.lang.String">
            <column name="created_time" />
        </property>
    </class>
</hibernate-mapping>

TestGuestBook.java 测试类：

package com.test.bean;

import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;

import com.wujing.bean.GuestBook;

public class TestGuestBook {
public static void main(String[] args) {
  Session session = new Configuration().configure().buildSessionFactory().getCurrentSession();

  GuestBook gb = new GuestBook();
  gb.setName("雷锋3");
  gb.setContent("好小伙！");

  GuestBook gb2 = new GuestBook();

  Transaction tx = session.beginTransaction();
  try {
   session.save(gb);
   gb2 = (GuestBook) session.get(GuestBook.class, new Integer(1));
   session.delete(gb2);
   tx.commit();
  } catch (Exception e) {
   tx.rollback();
  }
}
}