SSH整合

首先,SSH不是一个框架,而是多个框架(struts+spring+hibernate)的集成,是目前较流行的一种Web应用程序开源集成框架,用于构建灵活、易于扩展的多层Web应用程序。

 集成SSH框架的系统从职责上分为四层:表示层、业务逻辑层、数据持久层和实体层。

SSH构建系统的基本业务流程是:

1在表示层中,首先通过JSP页面实现交互界面,负责传送请求(Request)和接收响应(Response),然后Struts根据配置文件(struts-config.xml)将ActionServlet接收到的Request委派给相应的Action处理。

2在业务层中,管理服务组件的Spring IoC容器负责向Action提供业务模型(Model)组件和该组件的协作对象数据处理(DAO)组件完成业务逻辑,并提供事务处理、缓冲池等容器组件以提升系统性能和保证数据的完整性。

3在持久层中,则依赖于Hibernate的对象化映射和数据库交互,处理DAO组件请求的数据,并返回处理结果。

 下面我们了解一下组成SSH的三个框架

Spring是一个轻量级的控制反转(ioc)和面向切面(aop)的容器框架。

Spring特性

为什么说Spring?

Spring的以上特性是开发人员使用基本的JavaBean来完成以前只可能由EJB完成的事情。然而,Spring的用途不仅限于服务器端的开发。从简单性、可测试性和松耦合的角度而言,任何Java应用都可以从Spring中受益。

Struts

它通过采用 Java Servlet/JSP 技术,实现了基于Java EEWeb应用的MVC设计模式的应用框架,是MVC经典设计模式中的一个经典产品。

struts1的核心构成

Struts2

Struts 2是Struts的下一代产品,是在 struts 1和WebWork的技术基础上进行了合并的全新的Struts 2框架。其全新的Struts 2的体系结构与Struts 1的体系结构差别巨大。Struts 2以WebWork为核心,采用拦截器的机制来处理用户的请求,这样的设计也使得业务逻辑控制器能够与ServletAPI完全脱离开,所以Struts 2可以理解为WebWork的更新产品

 Struts2体系结构

 

Hibernate

Hibernate是一个开放源代码的对象关系映射框架,它对JDBC进行了非常轻量级的对象封装,使得Java程序员可以随心所欲的使用对象编程思维来操纵数据库。 Hibernate可以应用在任何使用JDBC的场合,既可以在Java的客户端程序使用,也可以在Servlet/JSP的Web应用中使用,最具革命意义的是,Hibernate可以在应用EJB的J2EE架构中取代CMP,完成数据持久化的重任

 Hibernate核心构成

 

 hibernate基本执行流程

 下面看以一个案例来了解一下SSH框架整合

项目整体架构

 

实体类

package cn.happy.beans;

import javax.annotation.Generated;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;

import org.hibernate.annotations.GenericGenerator;

/**
 * 股票
 * @author Happy
 */

public class Stock {
    
   private int sid;
   private String sname;
   private int count; //股数
    public int getSid() {
        return sid;
    }
    public void setSid(int sid) {
        this.sid = sid;
    }
    public String getSname() {
        return sname;
    }
    public void setSname(String sname) {
        this.sname = sname;
    }
    public int getCount() {
        return count;
    }
    public void setCount(int count) {
        this.count = count;
    }
   
}
Stock.java
<?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 package="cn.happy.beans">
  <class name="Stock">
      <id name="sid">
        <generator class="native"></generator> 
      </id>
    
       <property name="sname" column="SNAME"></property>
        <property name="count" column="COUNT"></property>
  </class>

</hibernate-mapping>
Stock.hbm.xml

 

 Dao/DaoImpl

package cn.happy.dao;

import cn.happy.beans.Stock;
/**
 *股票
 * @author xiaobai
 *
 */
public interface IStockDAO {
      //创建股票
       public int addStock(Stock stock);
        
    
}
IStockDAO
package cn.happy.dao.impl;

import java.io.Serializable;

import org.hibernate.SessionFactory;
import org.springframework.jdbc.core.support.JdbcDaoSupport;

import cn.happy.beans.Stock;
import cn.happy.dao.IStockDAO;

public class StockDAOImpl implements IStockDAO {
    
    
    private SessionFactory sessionFactory;
    
    @Override
    public int addStock(Stock stock) {
        Serializable count = sessionFactory.getCurrentSession().save(stock);
        return ((Integer)count).intValue();
    }
    
    public SessionFactory getSessionFactory() {
        return sessionFactory;
    }

    public void setSessionFactory(SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

}
StockDAOImpl

 

service/serviceImpl

package cn.happy.service;


import cn.happy.beans.Stock;


/**
 * 股票
 * @author xiaobai
 *
 */
public interface IStockService {
  
   //02.添加股票
    public  int addStock(Stock stock);
    
}
IStockService
package cn.happy.service.impl;

import org.springframework.transaction.annotation.Isolation;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import cn.happy.beans.Stock;

import cn.happy.dao.IStockDAO;
import cn.happy.service.IStockService;

public class StockServiceImpl implements IStockService {

    //植入dao对象
    
    
    private IStockDAO stockDao;
    


    @Override
    //@Transactional(isolation=Isolation.DEFAULT,propagation=Propagation.REQUIRED)
    public int addStock(Stock stock) {
        return stockDao.addStock(stock);
    }

    
    public IStockDAO getStockDao() {
        return stockDao;
    }

    public void setStockDao(IStockDAO stockDao) {
        this.stockDao = stockDao;
    }

    
}
StockServiceImpl

 

 测试类(test)

package cn.happy.test;

import java.util.List;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import cn.happy.beans.Stock;
import cn.happy.service.IStockService;

public class MyTest {
     
    
   @Test
   //购入股票
   public void addData(){
       
       ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
       IStockService service=(IStockService)ctx.getBean("stockService");
     
       Stock stock=new Stock();
       stock.setSname("程序开发");
       stock.setCount(50);
       
      int addStock = service.addStock(stock);
      System.out.println(addStock);
   }
   
  
}
MyTest

 

 配置文件

<?xml version="1.0" encoding="UTF-8"?>
<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">
    
   <!-- 4.注册jdbc属性 -->
   <context:property-placeholder location="classpath:jdb.properties"/>     
     <!-- 1.c3p0数据源 -->
   <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
      <property name="driverClass" value="${jdbc.driver}"></property>
      <property name="jdbcUrl" value="${jdbc.url}"></property>
      <property name="user" value="${jdbc.username}"></property>
      <property name="password" value="${jdbc.password}"></property>
   </bean> 
   
   <!-- SessionFactory配置 --> 
  <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <!-- 数据源 -->
         <property name="dataSource" ref="dataSource"></property>
         <!--各种hibernate属性  -->
         <property name="hibernateProperties">
           <props>
              <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop>
              <prop key="hibernate.show_sql">true</prop>
              <prop key="hibernate.format_sql">true</prop>
             <prop key="hibernate.current_session_context_class"> org.springframework.orm.hibernate3.SpringSessionContext</prop>
           </props>
         </property>
         <!-- 引入小配置 -->
        <!--  <property name="mappingResources" value="cn/happy/beans/Stock.hbm.xml"></property> -->
         <property name="mappingDirectoryLocations" value="classpath:cn/happy/beans"></property>
  </bean>
   
   <bean id="stockDao" class="cn.happy.dao.impl.StockDAOImpl">
     <property name="sessionFactory" ref="sessionFactory"></property>
   </bean>
   
    <!-- 2.service -->  
      <bean id="service" class="cn.happy.service.impl.StockServiceImpl">
        <property name="stockDao" ref="stockDao"></property>
     </bean> 

    <!-- Action中注入service -->
   <bean id="addStock" class="cn.happy.action.AddStockAction" scope="prototype">
        <property name="service" ref="service"></property>
   </bean>
   
   <!--事务配置 --> 
   <!-- 注册事务管理器 -->
   <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
     <property name="sessionFactory" ref="sessionFactory"></property>
   </bean> 
   
  <tx:advice id="txAdvice" transaction-manager="txManager">
     <tx:attributes> 
     <!--指定在连接方法上应用的事务属性 -->
        <tx:method name="addStock" isolation="DEFAULT" propagation="REQUIRED"/>
     </tx:attributes>
   </tx:advice>
   <!-- aop配置 -->
  <aop:config>
     <aop:pointcut expression="execution(* *..service.*.*(..))" id="stockPointcut"/>
     <aop:advisor advice-ref="txAdvice" pointcut-ref="stockPointcut"/>
   </aop:config>
   
</beans>
applicationContext.xml

 

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc\:mysql\:///表名
jdbc.username=用户名
jdbc.password=密码
jdb.properties
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
    "http://struts.apache.org/dtds/struts-2.3.dtd">
 
<struts>
   <package name="default" extends="struts-default">
   
   <!-- Action -->
      <action name="addStockAction" class="addStock" method="add">
         <result name="success">/index.jsp</result>
      </action>
   </package>
</struts>
Struts

 

 web.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
  <display-name></display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <!--指定配置文件的位置和名称  -->
  <context-param>
     <param-name>contextConfigLocation</param-name>
     <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

   <!-- 监听器:作用是在整个网站运行的时候,获取到ServletContext(application)初始化的时候,自动
    注入Spring容器
    -->
   <listener>
      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
   </listener>

  
  <filter>
     <filter-name>struts</filter-name>
     <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
  </filter>
  
  <filter-mapping>
  <filter-name>struts</filter-name>
  <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>
web.xml

 

jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@ taglib uri="/struts-tags"  prefix="s"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'add.jsp' starting page</title>

  </head>
  
  <body>
  <h1>添加</h1>
     <s:form action="addStockAction" method="post">
        <s:textfield name="stock.sname"/>
        <s:textfield name="stock.count"/>
        <s:submit value="提交"></s:submit>
     </s:form>
  </body>
</html>
add.xml
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'index.jsp' starting page</title>
  </head>
  
  <body>
    成功 <br>
  </body>
</html>
index.jsp

 

 运行结果展示:

 

posted @ 2016-11-07 14:07  白兴强  阅读(175)  评论(0编辑  收藏  举报