struts框架设计

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/***************************************************搭建一个最基本的struts框架应用*****************************/

配置Struts2框架的开发环境配置步骤如下：

1、导入struts2所需要的jar包

2、配置web.xml文件

3、编写action类

4、配置struts.xml文件。

（1）添加jar包：

commons-fileupload-1.2.2.jar

commons-io-2.0.1.jar

commons-lang-2.5.jar

commons-logging-1.1.1.jar

freemarker-2.3.16.jar

struts-el-1.3.10.jar

ognl-3.0.1.jar

struts2-core-2.2.3.jar

xwork-2.0.4.jar

（2）配置web.xml文件：

<?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>SpringWebTest</display-name>




   <filter>
       <filter-name>EncodingFilter</filter-name>
       <filter-class>com.msp.util.FilterDemo</filter-class>
       <init-param>
           <param-name>encode</param-name>
           <param-value>utf-8</param-value>
       </init-param>
   </filter>
   <filter-mapping>
       <filter-name>EncodingFilter</filter-name>
       <url-pattern>/*</url-pattern>
   </filter-mapping>




<filter>
    <filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>




<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>




    <listener>
        <listener-class>com.msp.util.MyTimerListener</listener-class>
    </listener>



    <session-config>
       <session-timeout>3000</session-timeout>
    </session-config>


解决工程编码的问题，统一编码格式UTF-8

/**
* 编码格式过滤器
* com.msp.util.FilterDemo的编写
*
*/

public class FilterDemo implements Filter{

   private FilterConfig filterConfig;
   private String encoding;

   public void destroy() {
      filterConfig=null;
   }

   public void doFilter(ServletRequest request, ServletResponse response,
           FilterChain chain) throws IOException, ServletException {
           if(encoding!=null){
              request.setCharacterEncoding(encoding);
              chain.doFilter(request, response);
           }

   }

   public void init(FilterConfig config) throws ServletException {
       filterConfig=config;
       encoding=filterConfig.getInitParameter("encode");

   }

}

/**
*
* 定时器的配置一般都要实现ServletContextListener接口
* com.msp.util.MyTimerListener
*
/

public class MyTimerListener implements ServletContextListener {
    private BugXmlTimer mytimer = new BugXmlTimer ();
    public void contextInitialized(ServletContextEvent event) {
        mytimer.timerStart();
    }

    public void contextDestroyed(ServletContextEvent event) {
        mytimer.timerStop();
    }
}

（3）编写action类

    新建一个pojo类，继承 ActionSupport 复写其中的execute方法

     public class TestAction extends ActionSupport{


   public String loginAction() throws Exception {
       //TODO登录操作
       return SUCCESS;
   }


   public String loginOut() throws Exception {
       //TODO退出操作
       return SUCCESS;
   }
    }

4）配置struts.xml文件：注意头文件中的数字2.0，它属于版本号

    新建 struts.xml 头文件如下：

<?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>

<constant name="struts.i18n.encoding" value="utf-8" />//国际化支持

<package name="struts2" namespace="/" extends="struts-default">

    
   <interceptors>
   <interceptor name="loginedCheck" class="com.msp.interceptor.LoginedCheckInterceptor"/>
       <interceptor-stack name="mystack">
           <interceptor-ref name="loginedCheck" />
           <interceptor-ref name="defaultStack" />
       </interceptor-stack>
   </interceptors>
   

   
   <action name="user_*" class="com.msp.struts.UserAction" method="{1}">
   <result name="success">jsp/user/User_list.jsp</result>
   <result name="add">jsp/user/User_add.jsp</result>
   <result name="update">jsp/user/User_update.jsp</result>
   <result name="error">jsp/login.jsp</result>
   <result name="list" type="redirect">user_getAllUserlist</result>
   <interceptor-ref name="mystack" />//拦截器栈的引用
   </action>


</package>

</struts>

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