SSH框架的整合之路

SSH，也是现在常用的开发模式，SSH，就是Spring，Struts2，Hibernate

在整合的过程是这个样的：

应为我没有用maven创建，所以第一步就是将所需要的jar包导入

导入的jar包类别有：

1，导入Spring的jar包
2，数据库的jar包
3，alibaba的druid包
4，导入Struts2的jar包
5，导入Spring和Struts2整合的jar包
6，导入Hibernate包
7, 导入事物的包

现在开始我们的整合之路：

第一步：当然就是我们的web.xml文件的配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
    <!--配置Spring-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    <!--配置Struts2-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <welcome-file-list>
        <welcome-file>/WEB-INF/jsp/index.jsp</welcome-file>
    </welcome-file-list>

</web-app>

其实在web.xml的配置文件其实就两类Spring和Struts2的配置

第二步：配置完web.xml之后，我们要创建一个Struts.xml的文件；

<?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>
  
</struts>

第三步：配置完struts.xml之后，就是我们的Spring配置文件applicationContext.xml

为了以后管理的方便我们创建了三个application的文件

1）创建连接数据文件db.properties

db.driver=com.mysql.jdbc.Driver
db.url=jdbc:mysql://localhost:3306/jap
db.username=root
db.password=root

2 )创建我们的主文件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:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <!--导入数据源-->
    <import resource="classpath:applicationHibernate.xml"/>
    <!--配置扫描包的位置-->
    <context:component-scan base-package="org.peter"/>
    <!--事务配置-->
    <bean class="org.springframework.orm.hibernate5.HibernateTransactionManager" id="transactionManager">
        <property name="dataSource" ref="dataSource"/>
        <!--通过SessionFactory开启事务-->
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="add*"/>
            <tx:method name="insert*"/>
            <tx:method name="delete*"/>
            <tx:method name="update*"/>
        </tx:attributes>
    </tx:advice>
    <aop:config>
        <aop:pointcut id="p1" expression="execution(* org.peter.service.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="p1"/>
    </aop:config>
    <!--由于Action是在每次请求时都创建一个新的，所以这里需要手动设置scope属性-->
    <bean class="org.peter.action.HelloAction" id="helloAction" scope="prototype"/>
</beans>

3 )创建一个管理数据源的applicationDataSource.xm

<?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"
       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">
    <!--配置数据库-->
    <context:property-placeholder location="classpath:db.properties"/>

    <bean class="com.alibaba.druid.pool.DruidDataSource" id="dataSource">
        <property name="driverClassName" value="${db.driver}"/>
        <property name="url" value="${db.url}"/>
        <property name="username" value="${db.username}"/>
        <property name="password" value="${db.password}"/>
    </bean>
</beans>

4）创建一个管理hibernate的文件applicationHibernate.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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    <!--导入数据源-->
    <import resource="classpath:applicationDataSource.xml"/>
    <!--Hibernate核心配置文件
    1，数据库配置
    2，hibernate信息
    3，映射文件
    -->
    <bean class="org.springframework.orm.hibernate5.LocalSessionFactoryBean" id="sessionFactory">
        <!--配置属数据库-->
        <property name="dataSource" ref="dataSource"/>
        <!--配置hibernate的信息-->
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.format_sql">true</prop>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQL57Dialect</prop>
                <prop key="hibernate.hbm2ddl.auto">update</prop>
            </props>
        </property>
        <!--配置映射文件-->
        <property name="mappingResources">
            <list>
                <value>org/peter/model/User.hbm.xml</value>
            </list>
        </property>
    </bean>
</beans>

完成以上操作，我们就完成了SSH的整合，稍后我会把代码连接写在博客底部。

在完成之后，为了测试我们的环境，做一个注册的额操作

1）首先创建一个action的包，我在包里创建了一个HelloController的类

package org.peter.action;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import org.peter.model.User;
import org.peter.service.UserService;

import javax.annotation.Resource;

/**
 * Created by Lenovo on 2017/8/2.
 */
public class HelloAction extends ActionSupport implements ModelDriven<User>{
    @Resource
    UserService userService;
    public String index(){
        return "index";
    }

    public String reg(){
        return "reg";
    }

    public void doReg(){
        userService.insert(user);
    }

    private User user =new User();
    @Override
    public User getModel() {
        return user;
    }
}

2）我们创建了一个Mode的包，里面创建user类和User.bhm.xml的映射文件

创建model

package org.peter.model;

/**
 * Created by sang on 2017/5/25.
 */
public class User {
    private String username;
    private String password;
    private String address;
    private Long id;

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }
}

创建映射文件

<?xml version="1.0"?>
<!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="org.peter.model.User" table="t_user">
        <id name="id" column="id">
            <generator class="native"/>
        </id>
        <property name="username"/>
        <property name="address"/>
        <property name="password"/>
    </class>
</hibernate-mapping>

3）在创建一个dao包，为了展现java的面向接口

创建接口

package org.peter.dao;

import org.peter.model.User;

/**
 * Created by Lenovo on 2017/8/2.
 */
public interface UserDao {
    void insert(User user);
}

创建实现类：

package org.peter.dao;

import org.hibernate.SessionFactory;
import org.peter.model.User;
import org.springframework.orm.hibernate5.support.HibernateDaoSupport;
import org.springframework.stereotype.Repository;

import javax.annotation.Resource;

/**
 * Created by Lenovo on 2017/8/2.
 */
@Repository
public class UserDaoImpl extends HibernateDaoSupport implements UserDao {

    /*初始化sessionFactory*/
    @Resource
    public void setMySessionFactory(SessionFactory sessionFactory){
        super.setSessionFactory(sessionFactory);
    }

    public void insert(User user) {
        getHibernateTemplate().save(user);
    }
}

4）创建sevice包里面也有两个文件

创建userService接口

package org.peter.service;

import org.peter.model.User;

/**
 * Created by Lenovo on 2017/8/2.
 */
public interface UserService {
    void insert(User user);
}

创建UserService的实现类

package org.peter.service;

import org.peter.dao.UserDao;
import org.peter.model.User;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

/**
 * Created by Lenovo on 2017/8/2.
 */
@Service
public class UserServiceImpl implements UserService {
    @Resource
    UserDao userDao;
    @Override
    public void insert(User user) {
        userDao.insert(user);
    }
}

5）配置Struts2的配置文件

<?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="helloDemo" namespace="/" extends="struts-default">
        <action name="index" class="helloAction" method="index">
            <result name="index">index.jsp</result>
        </action>
        <action name="user_*" class="helloAction" method="{1}">
            <result name="reg">reg.jsp</result>
            <result name="doReg"></result>
        </action>
    </package>
</struts>

6）创建一个reg.jsp的注册页面，就完成一个小的测试

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>注册</title>
</head>
<body>
<form action="/user_doReg" method="post">
    <table border="1">
        <tr>
            <td>用户名：</td>
            <td><input type="text" name="username" id="username"></td>
        </tr>
        <tr>
            <td>密码：</td>
            <td><input type="password" name="password" id="password"></td>
        </tr>
        <tr>
            <td>住址：</td>
            <td><input type="text" name="address" id="address"></td>
        </tr>
        <tr>
            <td colspan="3"><input type="submit" value="注册"></td>
        </tr>
    </table>
</form>
</body>
</html>

SSH空白框架的代码：http://download.youkuaiyun.com/detail/strive_peter/9919062
SSH框架整合所需的jar包：http://download.youkuaiyun.com/detail/strive_peter/9919062