Spring视频学习（十六）集成Struts2

1.集成Spring和Hiberante

<?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-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd ">

<!-- 配置数据源 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8"/>
<property name="username" value="root"/>
<property name="password" value=""/>
<!-- 连接池启动时的初始值 -->
<property name="initialSize" value="1"/>
<!-- 连接池的最大值 -->
<property name="maxActive" value="500"/>
<!-- 最大空闲值.当经过一个高峰时间后，连接池可以慢慢将已经用不到的连接慢慢释放一部分，一直减少到maxIdle为止 -->
<property name="maxIdle" value="2"/>
<!--  最小空闲值.当空闲的连接数少于阀值时，连接池就会预申请去一些连接，以免洪峰来时来不及申请 -->
<property name="minIdle" value="1"/>
</bean>

<!-- 配置hibernate的sessionFactory -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource"><ref bean="dataSource" /></property>
<property name="mappingResources">
<list>
<value>com/persia/model/Person.hbm.xml</value>
</list>
</property>

<!-- 1.首先在sessionFactory里面配置以上3条设置 -->
<!-- 2.然后得在类路径下面添加一个ehcache.xml的缓存配置文件 -->
<!-- 3.最后在要使用缓存的实体bean的映射文件里面配置缓存设置 -->
<!--使用二级缓存-->
<!-- 不使用查询缓存，因为命中率不是很高 -->
<!-- 使用Ehcache缓存产品 -->
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
hibernate.hbm2ddl.auto=update
hibernate.show_sql=false
hibernate.format_sql=false
hibernate.cache.use_second_level_cache=true
hibernate.cache.use_query_cache=false
hibernate.cache.provider_class=org.hibernate.cache.EhCacheProvider
</value>
</property>
</bean>

<!-- 配置Spring针对hibernate的事务管理器 -->
<bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>

<!-- 配置使用注解的方式来使用事务 -->
<tx:annotation-driven transaction-manager="txManager"/>

<!-- 使用手工配置的注解方式来注入bean -->
<context:annotation-config></context:annotation-config>

<!--定义要注入的业务bean -->
<bean id="personService" class="com.persia.service.impl.PersonServiceImpl"></bean>

<!--注入Struts 2的action -->
<bean id="personList" class="com.persia.struts2.action.PersonListAction"></bean>
</beans>

2.集成Struts2

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> 
<!--1.指定spring的配置文件，默认从web的根目录开始查找，可以通过spring提供的classpath前缀来配置从类路径开始查找 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!--2.对Spring容器进行实例化 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--以上 2个步骤即实现了在web容器中实例化spring容器的配置，实例化后放到servletContext里面（Application级别）-->

<!--以下是由Spring提供的filter来解决Struts乱码问题 -->
<filter>
<filter-name>encoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>

<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 解决乱码 -->

<!-- 使用Spring解决Hiberante因session关闭导致的延迟例外问题 -->
<filter>
<filter-name>OpenSessionInViewFilter</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
</filter>

<filter-mapping>
<filter-name>OpenSessionInViewFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 解决延迟加载例外问题 -->

<!-- 配置Struts2，默认的配置文件为类路径下的struts.xml-->
<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>
<!-- 配置Struts2 -->

<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
<!--指定web应用的默认编码集，相当于调用HttpServletRequest的setCharacterEncoding方法-->
<constant name="struts.i18n.encoding" value="UTF-8"></constant>

<!--该属性指定需要Struts 2处理的请求后缀，该属性的默认值是action，即所有匹配*.action的请求都由Struts 2处理
如果用户需要制定多个请求后缀，则多个后缀之间以英文逗号隔开-->
<constant name="struts.action.extension" value="do"></constant>

<!--设置浏览器是否缓存静态内容，默认值为true，生产环境下使用，开发阶段最好关闭 -->
<constant name="struts.serve.static.browserCache" value="false"></constant>

<!--当struts的配置文件修改后，系统是否自动重新加载该文件，默认值为false，生产环境下使用，开发阶段最好打开 -->
<constant name="struts.configuration.xml.reload" value="true"></constant>

<!--开发模式下使用，可以打印出更详细的错误信息 -->
<constant name="struts.devMode" value="true" />

<constant name="struts.enable.DynamicMethodInvocation" value="false" />

<!-- 默认的视图主题 -->
<constant name="struts.ui.theme" value="simple"></constant>

<!--Struts2集成Spring：所有action对象有Spring来负责创建-->
<constant name="struts.objectFactory" value="spring"></constant>

<!-- Add packages here -->
<package name="person" namespace="/person" extends="struts-default">
<global-results>
<result name="message">/WEB-INF/page/message.jsp</result>
</global-results>

<!--下面的class为在Spring中配置的action的名称 -->
<action name="action_*" class="personList" method="{1}">
<result name="list">/WEB-INF/page/personlist.jsp </result>
<result name="add">/WEB-INF/page/add_person.jsp </result>
<result name="edit">/WEB-INF/page/edit_person.jsp </result>
</action>
</package>

</struts>

3.action和页面的编写：

package com.persia.struts2.action;

import java.util.List;

import javax.annotation.Resource;

import com.persia.model.Person;
import com.persia.service.IPersonService;

public class PersonListAction {

@Resource IPersonService ps;

private String message;
private List<Person> persons;
private Person person;

/**
* 显示列表
* @return
*/
public String list(){
this.persons=ps.getPersons();
return "list";
}

/**
* 显示添加界面
* @return
*/
public String addUI(){
return "add";
}

/**
* 添加操作
* @return
*/
public String add(){
ps.save(person);
this.message="添加成功";
return "message";
}
public Person getPerson() {
return person;
}
public void setPerson(Person person) {
this.person = person;
}

public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public List<Person> getPersons() {
return persons;
}
public void setPersons(List<Person> persons) {
this.persons = persons;
}

}

（2）页面如下：

personList.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

<title>PersonList</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->

</head>

<body>
<s:iterator value="persons">
id=<s:property value="id"/>,name==<s:property value="name"/><br/>
</s:iterator>
</body>
</html>

add_person.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

<title>添加</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->

</head>

<body>
<s:form action="action_add" namespace="/person">
名称：<s:textfield name="person.name"></s:textfield>
<input type="submit" value="发送"/>
</s:form>
</body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

<title>result</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->

</head>

<body>
<s:property value="message"/>
</body>
</html>