Hibernate配置步骤

Posted 2020-07-27

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

 1 public class UserInfoT implements java.io.Serializable {
 2 
 3     // Fields
 4 
 5     /**
 6      * 
 7      */
 8     private static final long serialVersionUID = -8360690722407472061L;
 9     private Long id;
10     private String userName;
11     private String password;
12     private Integer age;
13 
14     // Constructors
15 
16     /** default constructor */
17     public UserInfoT() {
18     }
19 
20     /** full constructor */
21     public UserInfoT(String userName, String password, Integer age) {
22         this.userName = userName;
23         this.password = password;
24         this.age = age;
25     }
26 
27     // Property accessors
28 
29     public Long getId() {
30         return this.id;
31     }
32 
33     public void setId(Long id) {
34         this.id = id;
35     }
36 
37     public String getUserName() {
38         return this.userName;
39     }
40 
41     public void setUserName(String userName) {
42         this.userName = userName;
43     }
44 
45     public String getPassword() {
46         return this.password;
47     }
48 
49     public void setPassword(String password) {
50         this.password = password;
51     }
52 
53     public Integer getAge() {
54         return this.age;
55     }
56 
57     public void setAge(Integer age) {
58         this.age = age;
59     }
60 
61 }

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。

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
 3 "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 4 <!-- 
 5     Mapping file autogenerated by MyEclipse Persistence Tools
 6 -->
 7 <hibernate-mapping>
 8     <class name="com.lovo.beans.UserInfoT" table="user_info_t" catalog="hibernate">
 9         <id name="id" type="java.lang.Long">
10             <column name="id" />
11             <!-- 指定ID的生成方式 -->
12             <generator class="identity" />
13         </id>
14         <property name="userName" type="java.lang.String">
15             <column name="user_name" length="32">
16                 <comment>用户名</comment>
17             </column>
18         </property>
19         <property name="password" type="java.lang.String">
20             <column name="password" length="32">
21                 <comment>密码</comment>
22             </column>
23         </property>
24         <property name="age" type="java.lang.Integer">
25             <column name="age">
26                 <comment>年龄</comment>
27             </column>
28         </property>
29     </class>
30 </hibernate-mapping>

UserInfoT.hbm.xml

OK，配置完成！