Hibernate配置步骤

1、创建WEB项目

2、从http://www.hibernate.org/下载hibernate-release-4.3.11.Final.zip，并解压。

3、将hibernate必须的包加入lib

4、打开hibernate-release-4.3.11.Final\lib\required文件夹，导入jar文件：

5、打开hibernate-release-4.3.11.Final\lib\optional\ehcache文件夹，导入jar文件：

6、打开hibernate-release-4.3.11.Final\lib\optional\c3p0文件夹，导入jar文件：

7、配置hibernate.cfg.xml。打开hibernate-release-4.3.11.Final\project\etc文件夹，选择hibernate.cfg.xml文件并复制到src下。

8、打开hibernate.cfg.xml文件，并设置数据库连接

  1 <!DOCTYPE hibernate-configuration PUBLIC
  2     "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
  3     "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
  4
  5 <hibernate-configuration>
  6
  7     <session-factory>
  8         <!-- 定义方言,即告诉框架你用的是什么数据库 -->
  9         <property name="dialect">
 10             org.hibernate.dialect.MySQLDialect
 11         </property>
 12
 13         <!-- 定义连接路径 -->
 14         <property name="connection.url">
 15             jdbc:mysql://localhost:3306/hibernate?characterEncoding=UTF-8
 16         </property>
 17         <!-- 定义连接名与密码 -->
 18         <property name="connection.username">root</property>
 19         <property name="connection.password"></property>
 20         <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
 21
 22         <!-- 指定使用c3p0连接池 -->
 23         <property name="hibernate.connection.provider_class">org.hibernate.c3p0.internal.C3P0ConnectionProvider</property>
 24         <!-- 指定连接池最大连接数 -->
 25         <property name="hibernate.c3p0.max_size">20</property>
 26         <!-- 指定连接池最小连接数 -->
 27         <property name="hibernate.c3p0.min_size">1</property>
 28         <!-- 指定连接池里连接超时时长 -->
 29         <property name="hibernate.c3p0.timeout">5000</property>
 30
 31         <!-- 指定连接池里最大缓存多少个PreparedStatement对象 -->
 32         <property name="hibernate.c3p0.max_statements">100</property>
 33         <property name="hibernate.c3p0.idle_test_period">3000</property>
 34 <property name="hibernate.c3p0.acquire_increment">2</property>
 35
 36         <!--以格式良好的方式显示SQL语句-->
 37         <property name="format_sql">true</property>
 38         <!--显示SQL语句-->
 39         <property name="show_sql">true</property>
 40
 41         <!-- 添加hbm文件配置 -->
 42         <mapping resource="com/lovo/xmls/UserInfoT.hbm.xml" />
 43 　　　　 <mapping class="com.lovo.beans.UserInfoT"/>
 44  　　　　</session-factory>
 45
 46 </hibernate-configuration>

hibernate.cfg.xml

9、创建数据库表，并封装实体Bean与XXX.hbm.xml文件，例如：UserInfoT.java:

 public class UserInfoT implements java.io.Serializable {

     // Fields

     /**
      *
      */
     private static final long serialVersionUID = -8360690722407472061L;
     private Long id;
     private String userName;
     private String password;
     private Integer age;

     // Constructors

     /** default constructor */
     public UserInfoT() {
     }

     /** full constructor */
     public UserInfoT(String userName, String password, Integer age) {
         this.userName = userName;
         this.password = password;
         this.age = age;
     }

     // Property accessors

     public Long getId() {
         return this.id;
     }

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

     public String getUserName() {
         return this.userName;
     }

     public void setUserName(String userName) {
         this.userName = userName;
     }

     public String getPassword() {
         return this.password;
     }

     public void setPassword(String password) {
         this.password = password;
     }

     public Integer getAge() {
         return this.age;
     }

     public void setAge(Integer age) {
         this.age = age;
     }

 }

UserInfoT

然后打开 hibernate-release-4.3.11.Final\project\hibernate-core\src\main\resources\org\hibernate文件夹下的hibernate-mapping-3.0.dtd文件。，复制head部分。

 <?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">
 <!--
     Mapping file autogenerated by MyEclipse Persistence Tools
 -->
 <hibernate-mapping>
     <class name="com.lovo.beans.UserInfoT" table="user_info_t" catalog="hibernate">
         <id name="id" type="java.lang.Long">
             <column name="id" />
             <!-- 指定ID的生成方式 -->
             <generator class="identity" />
         </id>
         <property name="userName" type="java.lang.String">
             <column name="user_name" length="32">
                 <comment>用户名</comment>
             </column>
         </property>
         <property name="password" type="java.lang.String">
             <column name="password" length="32">
                 <comment>密码</comment>
             </column>
         </property>
         <property name="age" type="java.lang.Integer">
             <column name="age">
                 <comment>年龄</comment>
             </column>
         </property>
     </class>
 </hibernate-mapping>

UserInfoT.hbm.xml

OK，配置完成！