SSH框架整合
整合的框架
- Struts2
- Hibernate5.x
- Spring4.x
Hibernate
Hibernate核心配置文件
- 单纯使用hibernate框架，核心配置文件固定；整合Spring后，核心配置文件没有固定要求
Hibernate 映射文件
- ORM思想
Hibernate的操作
- Spring框架对Hibrenate进行了封装，使用HibernateTemplate
Struts2
Action创建方式
-
整合的思想
- Struts2 Web层 Service
- Spring Service层 Dao
Hibernate Dao层 DB
两两整合
- Struts2 和 Spring
- Spring 和 Hibernate
Struts2 和 Spring
Action 创建有Spring管理
<bean id="" class="" scope="prototype">bean>Spring 和 Hibernate
数据库信息由Spring配置
- SessionFactory对象创建由Spring管理
实现步骤
Struts2 和 Spring 整合
Step1: 导入jar包
Spring 基本jar包
Struts2基本jar包
Spring与web整和的jar包(启动服务器需加载spring核心配置文件)
spring-web-4.2.4.RELEASE.jarStruts2与Spring整合的jar包
struts2-spring-plugin-2.3.24.jar
Step2: 创建Action
@Controller("userAction") //spring通过注解方式创建对象 @Scope("prototype") //action是多实例 public class UserAction extends ActionSupport { @Override public String execute() throws Exception { System.out.println("创建Action......"); return NONE; } }Step3: 配置文件
Struts2的核心配置struts.xml
<struts> <constant name="struts.i18n.encoding" value="UTF-8">constant> <package name="demo" extends="struts-default" namespace="/"> <action name="userAction" class="userAction">action> package> struts>Spring核心配置spring_bean.xml
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <context:component-scan base-package="com.jeff">context:component-scan> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="com.mysql.jdbc.Driver">property> <property name="jdbcUrl" value="jdbc:mysql:///jeff">property> <property name="user" value="root">property> <property name="password" value="123456">property> bean> beans>web.xml配置
<filter> <filter-name>struts2filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilterfilter-class> filter> <filter-mapping> <filter-name>struts2filter-name> <url-pattern>/*url-pattern> filter-mapping> <listener> <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class> listener> <context-param> <param-name>contextConfigLocationparam-name> <param-value>classpath:spring_bean.xmlparam-value> context-param>
Spring与Hibernate整合
- 把Hibernate核心配置文件中配置数据库信息的操作由Spring完成
把Hibernate里面的SessionFactory的创建交由Spring管理
Step1: 导入jar包
Hibernate的基本jar包
Hibernate与Spring整合的jar包
spring-orm-4.2.4.RELEASE.jar
Step2: 创建实体类
Step3: 配置文件
hibernate.cfg.xml
<hibernate-configuration> <session-factory> <property name="hibernate.show_sql">trueproperty> <property name="hibernate.format_sql">trueproperty> <property name="hibernate.hbm2ddl.auto">updateproperty> <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialectproperty> <mapping resource="com/jeff/mapping/Book.hbm.xml"/> session-factory> hibernate-configuration>Book.hbm.xml
<hibernate-mapping> <class name="com.jeff.entity.Book" table="book"> <id name="bookId" column="book_id"> <generator class="native">generator> id> <property name="bookName" column="book_name">property> <property name="author" column="author">property> class> hibernate-mapping>spring_bean.xml
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="com.mysql.jdbc.Driver">property> <property name="jdbcUrl" value="jdbc:mysql:///jeff">property> <property name="user" value="root">property> <property name="password" value="123456">property> bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource">property> <property name="configLocations" value="classpath:hibernate.cfg.xml">property> bean>
HibernateTemplate的操作
注意HibernateTemplate进行crud操作时，必须手动配置事务，否则出项以下错误
Write operations are not allowed in read-only mode (FlushMode.MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly' marker from transaction definition.- spring_bean.xml
<context:component-scan base-package="com.jeff">context:component-scan>
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="com.mysql.jdbc.Driver">property>
<property name="jdbcUrl" value="jdbc:mysql:///jeff">property>
<property name="user" value="root">property>
<property name="password" value="123456">property>
bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource">property>
<property name="configLocations" value="classpath:hibernate.cfg.xml">property>
bean>
<bean id="hibernateTemplate" class="org.springframework.orm.hibernate5.HibernateTemplate">
<property name="sessionFactory" ref="sessionFactory">property>
bean>
<bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory">property>
bean>
<tx:annotation-driven transaction-manager="transactionManager"/>
- Dao层
//接口
package com.jeff.dao;
public interface BaseDao<T> {
/**
* 添加单个对象
* @param obj 需要持久化的对象
* @return
*/
public int add(T obj);
/**
* 删除单个对象
* @param obj 根据ID删除对象
* @return
*/
public int delete(Integer id);
}
// 实现
package com.jeff.dao.impl;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.hibernate5.HibernateTemplate;
import org.springframework.transaction.annotation.Transactional;
import com.jeff.dao.BaseDao;
@Transactional
public class BaseDaoImpl<T> implements BaseDao<T>{
private static Logger logger = Logger.getLogger(BaseDaoImpl.class);
//属性
@Autowired
private HibernateTemplate hibernateTemplate;
/**********------------CRUD操作--------******************/
@Override
public int add(T obj) {
logger.info("----向数据库添加实体类-------");
hibernateTemplate.save(obj);
return 0;
}
@Override
public int delete(Integer id) {
return 0;
}
}
- Service层
//接口
package com.jeff.service;
import com.jeff.dao.BaseDao;
import com.jeff.entity.Book;
public interface BookService extends BaseDao<Book>{
}
//实现
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.jeff.dao.impl.BaseDaoImpl;
import com.jeff.entity.Book;
import com.jeff.service.BookService;
@Service("bookService")
public class BookServiceImpl extends BaseDaoImpl<Book>
implements BookService {
}- Action
package com.jeff.action;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import com.jeff.entity.Book;
import com.jeff.service.BookService;
import com.opensymphony.xwork2.ActionSupport;
@Controller("userAction")
@Scope("prototype")
public class UserAction extends ActionSupport {
@Autowired
private BookService bookService;
@Override
public String execute() throws Exception {
System.out.println("创建Action......");
Book book = new Book("Spring 实战", "Craig Walls");
bookService.add(book);
return NONE;
}
}
其它整合方法
可以将hibernate核心配置去掉,将所有的信息都在spring配置文件中配置
<bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource">property> <property name="hibernateProperties"> <props> <prop key="hibernate.show_sql">trueprop> <prop key="hibernate.format_sql">trueprop> <prop key="hibernate.hbm2ddl.auto">updateprop> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialectprop> props> property> <property name="mappingResources"> <list> <value>com/jeff/mapping/Book.hbm.xmlvalue> list> property> bean>