ssh框架搭建(提供可下载源码)

1*源码下载地址:https://pan.baidu.com/s/1qZo8ROK

   

FilterDispatcher是早期struts2的过滤器，后期的都用StrutsPrepareAndExecuteFilter了，如 2.1.6、2.1.8。StrutsPrepareAndExecuteFilter名字已经很能说明问题了，prepare与execute，前者表示准备，可以说是指filter中的init方法，即配制的导入；后者表示进行过滤，指doFilter方法，即将request请求，转发给对应的 action去处理。

    FilterDispatcher是struts2.0.x到2.1.2版本的核心过滤器.!
StrutsPrepareAndExecuteFilter是自2.1.3开始就替代了FilterDispatcher的.!

这样的改革当然是有好处的.!

    为什么这么说.? 应该知道如果我们自己定义过滤器的话, 是要放在strtus2的过滤器之前的, 如果放在struts2过滤器之后,你自己的过滤器对action的过滤作用就废了,不会有效!除非你是访问jsp/html!

    那我现在有需求, 我必须使用Action的环境,而又想在执行action之前拿filter做一些事, 用FilterDispatcher是做不到的.!

那么StrutsPrepareAndExecuteFilter可以把他拆分成StrutsPrepareFilter和StrutsExecuteFilter,可以在这两个过滤器之间加上我们自己的过滤器.!

给你打个比喻, 现在有病人要做手术, 现在struts2要做两件事, 搭病床(环境),执行手术.! 那么打麻药的工作呢.? 不可能要病人站着打吧, 所以必须有病床的环境,打完麻药之后再动手术.! 这个比喻非常形象了.!

 

 

    如果是2.1.3之前的版本，用org.apache.struts2.dispatcher.FilterDispatcher，

否则，用org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter。    

 

     从Struts2.1.3开始，将废弃ActionContextCleanUp过滤器，而在StrutsPrepareAndExecuteFilter过滤器中包含相应的功能。      

    三个初始化参数：    

  1、config参数：指定要加载的配置文件。逗号分割。   

  2、actionPackages参数：指定Action类所在的包空间。逗号分割。    

  3、configProviders参数：自定义配置文件提供者，需要实现ConfigurationProvider接口类。逗号分割。

 

2*配置文件详解

项目结构图

 web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  <display-name>ssh</display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  
  <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>*.action</url-pattern>
  </filter-mapping>
  
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring.xml</param-value>
  </context-param>
  
</web-app>

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>

    <package name="s1" namespace="/zy" extends="struts-default">

        <action name="registe" class="com.zy.controller.UserController" method="registe">
            
            <result name="success">/index.jsp</result>
        
        </action>

    </package>

</struts>

spring.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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    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
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!-- 1.配置组件扫描器 -->
    <context:component-scan base-package="com.zy"></context:component-scan>

    <!-- 2.配置连接池 -->
    <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

        <!-- 四大组件 -->
        <property name="driverClass" value="com.mysql.jdbc.Driver" />
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/db_test" />
        <property name="user" value="root" />
        <property name="password" value="root" />
        <property name="maxPoolSize" value="10" />
        <property name="minPoolSize" value="2" />
    </bean>

    <!-- 3.配置sessionFactory工厂 -->
    <bean name="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">

        <!-- 引用上边的数据源 -->
        <property name="dataSource" ref="dataSource" />

        <property name="hibernateProperties">
            <value>
                hibernate.dialect=org.hibernate.dialect.MySQLDialect
                hibernate.show_sql=true
                hibernate.format_sql=true
                hibernate.current_session_context_class=org.springframework.orm.hibernate4.SpringSessionContext
            </value>
        </property>

        <!-- 4.配置映射 -->
        <property name="mappingResources">
            <list>
                <value>mapping/user.hbm.xml</value>
            </list>
        </property>

    </bean>

    <!-- 5.配置事务管理 -->
    <bean name="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
        <!-- 引用sessionFactory -->
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>

    <!-- 6.配置AOP -->
    <aop:config>
        <!-- 配置切点 -->
        <aop:pointcut expression="execution(public * com.zy.service.impl.*.*(..))" id="myPointCut" />
        
        <aop:advisor advice-ref="myAdvice" pointcut-ref="myPointCut" />
    </aop:config>
    
    <!-- 7.建议 -->
    <tx:advice id="myAdvice" transaction-manager="transactionManager">
        
        <tx:attributes>
            <tx:method name="select*" read-only="true" />
            <tx:method name="save*" />
            <tx:method name="delete*" />
            <tx:method name="update*" />
        </tx:attributes>
    
    </tx:advice>

</beans>  

 

user.hbm.xml

<?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 package="com.zy.entity">

    <class name="User" table="user">
        <!-- 二级缓存的读写 -->
        <!-- <cache usage="read-write" /> -->

        <id name="id" column="id">
            <generator class="native" />
        </id>

        <property name="name" column="name" />
        <property name="age" column="age" />
        <property name="address" column="address" />

    </class>

</hibernate-mapping>

 

3*主体代码详解

控制层

UserController

package com.zy.controller;

import org.springframework.beans.factory.annotation.Autowired;

import com.opensymphony.xwork2.ActionSupport;
import com.zy.entity.User;
import com.zy.service.UserService;

//不需要注解controller需要添加一个jar包struts2-spring-p l u g i n-2.3.16.3.jar
@SuppressWarnings("serial")
public class UserController extends ActionSupport {

    @Autowired
    private UserService uService;

    private User user;

    public User getUser() {
        return user;
    }

    public void setUser(User user) {
        this.user = user;
    }

    //**********
    public String registe() {

        uService.saveUser(user);

        return "success";

    }
}

 

服务层

userserviceimpl

package com.zy.service.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import com.zy.dao.UserDao;
import com.zy.entity.User;
import com.zy.service.UserService;
@Component
public class UserServiceImpl implements UserService{

    @Autowired
    private UserDao userDao ;
    
    @Override
    public void saveUser(User user) {
        userDao.registe(user);
        
    }

}

 

数据库交互层

UserDaoImpl

package com.zy.dao.impl;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import com.zy.dao.UserDao;
import com.zy.entity.User;

@Component // 交给spring管理
public class UserDaoImpl implements UserDao {
    // 需要sessionFactory
    @Autowired
    private SessionFactory sf;// spring.xml配置过

    @Override
    public void registe(User user) {
        // 事务在spring.xml中配置过
        Session session = sf.getCurrentSession();
        session.save(user);
    }

}

 

详情参看源代码