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>

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;
    }

}

 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>

OK，配置完成！