Struts2+Hibernate4整合

编译环境：MyEclipse

工具：Maven

数据库：MySQL5.X

一、新建Maven Web项目

File——New——WebProject——勾选Add maven support

二、在Maven中配置依赖包

在pom.xml中添加下列代码

<!-- 单元测试 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<!-- 数据库连接 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.0.8</version>
</dependency>
<!-- hibernate 配置 -->
<dependency>
<groupId>dom4j</groupId>
<artifactId>dom4j</artifactId>
<version>1.6.1</version>
</dependency>

<dependency>
<groupId>antlr</groupId>
<artifactId>antlr</artifactId>
<version>2.7.7</version>
</dependency>

<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.2.4.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.0-api</artifactId>
<version>1.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate.common</groupId>
<artifactId>hibernate-commons-annotations</artifactId>
<version>4.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.15.0-GA</version>
</dependency>
<dependency>
<groupId>org.jboss.logging</groupId>
<artifactId>jboss-logging</artifactId>
<version>3.1.0.GA</version>
</dependency>
<dependency>
<groupId>org.jboss.spec.javax.transaction</groupId>
<artifactId>jboss-transaction-api_1.1_spec</artifactId>
<version>1.0.1.Final</version>
</dependency>
<!-- hibernate 配置结束 -->

<!-- struts2 配置 -->
<dependency>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
<version>3.3</version>
</dependency>
<dependency>
<groupId>asm</groupId>
<artifactId>asm-commons</artifactId>
<version>3.3</version>
</dependency>
<dependency>
<groupId>asm</groupId>
<artifactId>asm-tree</artifactId>
<version>3.3</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.3.1</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.2.2</version>
</dependency>
<dependency>
<groupId>ognl</groupId>
<artifactId>ognl</artifactId>
<version>3.0.5</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-core</artifactId>
<version>2.3.4</version>
</dependency>
<dependency>
<groupId>org.apache.struts.xwork</groupId>
<artifactId>xwork-core</artifactId>
<version>2.3.4</version>
</dependency>
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>2.3.19</version>
</dependency>
<!-- struts2 配置结束 -->

三、配置struts和hibernate

在src/main/java下添加struts.xml和hibernate.cfg.xml

struts.xml配置如下，将数据库用户名、密码以及数据库的链接修改为本机所使用的

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="default" namespace="/" extends="struts-default">
</package>
</struts>

hibernate.cfg.xml如下

<?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>

<!-- 数据库用户名 -->

<property name="connection.username">root</property>
<!-- 数据库密码 -->

<property name="connection.password">123456</property>
<!--驱动程序-->

<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<!-- JDBC URL -->

<property name="connection.url">jdbc:mysql://127.0.0.1:3306/shop</property>
<!-- SQL方言，这边设定的是MySQL -->

<property name="dialect">org.hibernate.dialect.MySQLDialect</property>

<property name="show_sql">true</property>

<property name="format_sql">true</property>

<property name="hbm2ddl.auto">update</property>

<property name="current_session_context_class">thread</property>
<!--映射文件添加处-->
</session-factory>
</hibernate-configuration>

到这里整合已经完成

三、新建实体类和hibernate映射文件

例如新建一个User类,成员变量如下，创建构造方法和get、set方法

private int uid;
private String username;
private String password;

接着，在User类所在的包下，新建映射文件User.hbm.xml

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

<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class name="entity.User" table="user">
<id name="uid" type="int"><!-- 主键 -->
<generator class="native" /><!-- 自动增长 -->
</id>
<property name="username" type="java.lang.String" />
<property name="password" type="java.lang.String" />
</class>
</hibernate-mapping>

再将映射文件User.hbm.xml的路径添加到hibernate.cfg.xml

<mapping resource="entity/User.hbm.xml"/>

四、根据映射文件创建数据库表

在src/test/java下创建一个Test类

public class Test {

@Test
public void testSchemaExport(){
//创建配置对象
Configuration config = new Configuration().configure();
//创建服务注册对象
ServiceRegistry serviceRegistry = new ServiceRegistryBuilder()
.applySettings(config.getProperties()).buildServiceRegistry();
//创建SessionFactory
SessionFactory sessionFactory = config.buildSessionFactory(serviceRegistry);
//创建session对象
Session session = sessionFactory.getCurrentSession();
//创建SchemaExport对象
SchemaExport schemaExport = new SchemaExport(config);
schemaExport.create(true, true);
}

}

运行junit即可生成user表