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
（1）引入jar包
（2）配置web.xml
<?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>
（3）配置struts.xml
<?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：
（1）action如下：
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>
message.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>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>
