SSH框架整合详解

发布于 2019-11-19  340 热度


定义

SSH是 struts+spring+hibernate的一个集成框架,是16年之前较为流行的一种Web应用程序开源框架。
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域模块层,以帮助开发人员在短期内搭建结构清晰、可复用性好、维护方便的Web应用程序。其中使用Struts作为系统的整体基础架构,负责MVC的分离,在Struts框架的模型部分,控制业务跳转,利用Hibernate框架对持久层提供支持,Spring做管理,管理struts和hibernate。

概述

SSH框架集,是现在大多数软件设计过程中都会使用的一种框架集。而这种框架是基于MVC的开发,且MVC模式已经成为现代J2EE开发中的一种常用模式,且受到越来越多JSP、PHP等开发者的欢迎。MVC模式,分别是模型(Model)、视图(View)、控制器(Controller)。
应用程序被分割成这三大部分之后,各自处理自己的任务。视图层通过提取用户的输入信息,提交到控制器之后,控制器根据某种选择来决定这个请求交由给模型层来处理,模型层根据业务逻辑的代码处理用户请求并返回数据,并最终用视图层展示给用户。
而前面提到的SSH框架集,就是很好的对应了MVC模式的开发使用。这种Struts+Hibernate+Spring的三大框架整合,契合着MVC模式的三层对象。其中Struts对应着前台的控制层,而Spring则负责实体bean的业务逻辑处理,至于Hibernate则是负责数据库的交接以及使用Dao接口来完成操作。SSH框架整合详解

项目开发案例

开发环境

  • 开发工具:Eclipse
  • JDK版本:9.0.4
  • MySQL版本:8.0.12
  • 服务器:Apache-Tomcat-9.0.12
  • SSH版本:Spring-5.0.5.RELEASE + Struts-2.5.18 + Hibernate-5.2.12.Final

1.创建动态web工程

(1)工程目录结构

SSH框架整合详解

(2)导入所需jar包

SSH框架整合详解SSH框架整合详解

2.持久层实现

customer_manager数据库中customer表的构建:

SSH框架整合详解

Customer:

package com.ming.ssh.domain;
import java.io.Serializable;
/**
 * 定义实体类
 * @author Mr.F
 *
 */
public class Customer implements Serializable {	
	private static final long serialVersionUID = 1L;	
	private Long c_id;
	private String c_name;
	private String c_password;
	private String c_address;
	private String c_phone;
	private String c_email;	
	public Long getC_id() {
		return c_id;
	}
	public void setC_id(Long c_id) {
		this.c_id = c_id;
	}
	public String getC_name() {
		return c_name;
	}
	public void setC_name(String c_name) {
		this.c_name = c_name;
	}
	public String getC_password() {
		return c_password;
	}
	public void setC_password(String c_password) {
		this.c_password = c_password;
	}
	public String getC_address() {
		return c_address;
	}
	public void setC_address(String c_address) {
		this.c_address = c_address;
	}
	public String getC_phone() {
		return c_phone;
	}
	public void setC_phone(String c_phone) {
		this.c_phone = c_phone;
	}
	public String getC_email() {
		return c_email;
	}
	public void setC_email(String c_email) {
		this.c_email = c_email;
	}
}

Customer.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">
<!-- 
 	定义实体类与数据库中表的映射
    @author Mr.F
	-->
<hibernate-mapping>
	<class name="com.ming.ssh.domain.Customer" table="customer">
		<!-- 当实体类的属性名与表中的字段名相同时,可省略column -->
		<id name="c_id">
			<generator class="native"></generator>
		</id>
		<property name="c_name"></property>
		<property name="c_password"></property>
		<property name="c_address"></property>
		<property name="c_phone"></property>
		<property name="c_email"></property>		
	</class>
</hibernate-mapping>

CustomerDao:

package com.ming.ssh.dao;
import java.util.List;
import com.ming.ssh.domain.Customer;
/**
 * 定义持久层接口
 * @author Mr.F
 *
 */
public interface CustomerDao {	
	List<Customer> findAllCustomer(); //查询所有客户信息
}

CustomerDaoImpl:

package com.ming.ssh.dao.impl;
import java.util.List;
import javax.annotation.Resource;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.DetachedCriteria;
import org.springframework.orm.hibernate5.support.HibernateDaoSupport;
import org.springframework.stereotype.Repository;
import com.ming.ssh.dao.CustomerDao;
import com.ming.ssh.domain.Customer;
/**
 * 实现持久层接口
 * @author Mr.F
 *
 */
@Repository("customerDao")
public class CustomerDaoImpl extends HibernateDaoSupport implements CustomerDao{
	@Resource(name="sessionFactory")
	public void setSessionFactoryOverride(SessionFactory sessionFactory){	
		super.setSessionFactory(sessionFactory);	
	}
	@SuppressWarnings("unchecked")
	@Override
	public List<Customer> findAllCustomer() {		
		DetachedCriteria criteria = DetachedCriteria.forClass(Customer.class);
		List<Customer> list = (List<Customer>) this.getHibernateTemplate().findByCriteria(criteria);
		return list;	
	}
}

3.业务层实现

CustomerService:

package com.ming.ssh.service;
import java.util.List;
import com.ming.ssh.domain.Customer;
/**
 * 定义业务层接口
 * @author Mr.F
 *
 */
public interface CustomerService {
	List<Customer> findAllCustomer(); //查询所有客户信息
}

CustomerServiceImpl:

package com.ming.ssh.service.impl;
import java.util.List;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import com.ming.ssh.dao.CustomerDao;
import com.ming.ssh.domain.Customer;
import com.ming.ssh.service.CustomerService;
/**
 * 实现业务层接口
 * @author Mr.F
 *
 */
@Service("customerService")
public class CustomerServiceImpl implements CustomerService{	
	@Resource(name="customerDao")
	private CustomerDao customerDao;	
	@Transactional(propagation=Propagation.SUPPORTS, readOnly=true)
	@Override
	public List<Customer> findAllCustomer() {
		return customerDao.findAllCustomer();	
	}
}

applicationContext.xml:

<?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">
	<!-- 扫描包下的注解 -->
	<context:component-scan base-package="com.ming.ssh"></context:component-scan>
	<!-- 加载MySQL数据库属性文件 -->
	<context:property-placeholder location="classpath:jdbc.properties"/>
	<!-- 注册数据源 -->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<!-- 数据库属性 -->
		<property name="driverClass" value="${jdbc.driverClass}"></property>
		<property name="jdbcUrl" value="${jdbc.url}"></property>
		<property name="user" value="${jdbc.username}"></property>
		<property name="password" value="${jdbc.password}"></property>
		<!-- 连接池属性 -->
		<property name="initialPoolSize" value="3"></property>  
        <property name="minPoolSize" value="3"></property>  
        <property name="maxPoolSize" value="5"></property>  
        <property name="acquireIncrement" value="3"></property>   
        <property name="maxStatements" value="8"></property>  
        <property name="maxStatementsPerConnection" value="5"></property>  
        <property name="maxIdleTime" value="1800"></property> 
	</bean>
	<!-- 注册Session工厂 -->
	<bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">  
		<!-- 装配数据源 -->
        <property name="dataSource" ref="dataSource"></property> 
        <!-- 装配Hibernate属性  -->
        <property name="hibernateProperties">
        	<props>
        		<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
        		<prop key="hibernate.show_sql">true</prop>
        		<prop key="hibernate.format_sql">true</prop>
        		<prop key="hibernate.hbm2ddl.auto">update</prop>
        	</props>
        </property> 
       <!--  装配实体类映射文件 -->
        <property name="mappingResources">
        	<list>
        		<value>com/ming/ssh/domain/Customer.hbm.xml</value>
        	</list>
        </property>
    </bean>  
    <!-- 注册Hibernate事务管理器 -->
    <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">  
        <property name="sessionFactory" ref="sessionFactory"></property>  
    </bean>  
    <!-- 开启事务注解 -->
    <tx:annotation-driven transaction-manager="transactionManager" />
</beans>

jdbc.properties:

jdbc.driverClass=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost/customer_manager?serverTimezone=UTC
jdbc.username=root
jdbc.password=1314

log4j.properties:

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
log4j.rootLogger= info, stdout

4.控制层实现

CustomerAction:

package com.ming.ssh.web;
import java.util.List;
import javax.annotation.Resource;
import org.apache.struts2.ServletActionContext;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import com.ming.ssh.domain.Customer;
import com.ming.ssh.service.CustomerService;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
/**
 * 定义控制层实现类
 * @author Mr.F
 *
 */
@Controller("customerAction")
@Scope("prototype")
public class CustomerAction extends ActionSupport implements ModelDriven<Customer>{
	private static final long serialVersionUID = 1L;	
	private Customer customer = new Customer();
	@Override
	public Customer getModel() {	
		return this.customer;		
	}	
	@Resource(name="customerService")
	private CustomerService customerService;	
	public String findAll() {		
		List<Customer> list = customerService.findAllCustomer();
		ServletActionContext.getRequest().setAttribute("customerList", list);
		return "findAllSuccess";	
	}				
}

struts.xml:

<?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>
	<!-- 设置操作方法后缀名 -->
	<constant name="struts.action.extension" value="action"></constant>
	<!-- 配置处理用户请求的Action和逻辑视图 -->
	<package name="ssh_customer_new" extends="struts-default" namespace="/">
		<action name="customer_*" method="{1}" class="customerAction">
			<result name="findAllSuccess">/WEB-INF/jsp/index.jsp</result>
			<allowed-methods>findAll</allowed-methods>
		</action>
	</package>
</struts>

index.jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>客户管理系统</title>
</head>
<body>
	<h2 align="center">客户管理系统</h2>
	<table border="1px" align="center" width="600px">
		<tr align="center">
			<td>客户ID</td>
			<td>客户姓名</td>
			<td>客户密码</td>
			<td>客户地址</td>
			<td>客户手机</td>
			<td>客户邮箱</td>	
		</tr>
		<s:iterator value="#request.customerList" >
			<tr align="center">
				<td><s:property value="c_id"/></td>
                <td><s:property value="c_name"/></td>
                <td><s:property value="c_password"/></td>
                <td><s:property value="c_address"/></td>
                <td><s:property value="c_phone"/></td>
                <td><s:property value="c_email"/></td>
			</tr>
		</s:iterator>
	</table>
</body>
</html>

web.xml:

<?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" 
		 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>ssh_customer_new</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
   <!-- 配置Spring监听器 -->
   <listener>
  	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!-- 加载Spring配置文件 -->
  <context-param>  
    <param-name>contextConfigLocation</param-name>  
    <param-value>classpath:applicationContext.xml</param-value>  
  </context-param>
  <!-- 配置Struts2核心过滤器 -->
  <filter>
  	<filter-name>struts2</filter-name>
  	<filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
  </filter>
  <filter-mapping>
  	<filter-name>struts2</filter-name>
  	<url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

5.工程测试

将ssh_customer_new项目工程发布到本地tomcat服务器上,在浏览器地址栏访问http://localhost:8080/ssh_customer_new/customer_findAll.action,其结果如下:

SSH框架整合详解

参考资料:

1.SSH框架整合详解

2.ssh框架 - 百度百科

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