webwork　的过滤器的用法

 

先写一个过滤器类继承Interceptor 

 

// Source file: F:/java/Oil/src/com/xj/tools/UserAccessInterceptor.java

package  com.xj.tools;

import  java.util.Map;

import  com.opensymphony.xwork.ActionContext;
import  com.opensymphony.xwork.ActionInvocation;
import  com.opensymphony.xwork.interceptor.Interceptor;
import  com.xj.model.User;

public   class  UserAccessInterceptor  implements  Interceptor  ... {
    public static final String index = "INDEX";

    /** *//**
     * @roseuid 462436220251
     */
    public UserAccessInterceptor() ...{

    }

    public void destroy() ...{

    }

    public void init() ...{

    }

    public String intercept(ActionInvocation arg0) throws Exception ...{
        return "index";
        /** *//***********************************************************************
         * Map session = ActionContext.getContext().getSession(); if
         * (session.get("user") == null) { return index; } else if (((User)
         * session.get("user")).getUsername() == null) return index; return
         * arg0.invoke();
         **********************************************************************/
    }

}

 然后再写一个Ｗｅｂｗｏｒｋ的配置文件xwork-losbgm-default.xml

<? xml version = " 1.0 "  encoding = " UTF-8 " ?>
<! DOCTYPE xwork PUBLIC  " -//OpenSymphony Group//XWork 1.1.1//EN "
     " http://www.opensymphony.com/xwork/xwork-1.1.1.dtd " >
< xwork >
     < include file = " webwork-default.xml "   />
     < package  name = " xwork-losbgm-default "   extends = " webwork-default " >
         < interceptors >
             < interceptor name = " employeeAccessInterceptor "
                 class = " com.xj.tools.UserAccessInterceptor " >
             </ interceptor >
             < interceptor - stack name = " losbgmStack " >
                 < interceptor - ref name = " employeeAccessInterceptor " ></ interceptor - ref >
                 < interceptor - ref name = " defaultStack "   />
             </ interceptor - stack >
         </ interceptors >
         < default - interceptor - ref name = " losbgmStack " ></ default - interceptor - ref >
         < global - results >
             < result name = " index "  type = " redirect " >/ index.jsp </ result >
         </ global - results >
     </ package >
</ xwork >

接着在要实现拦截器的Ｗｅｂｗｏｒｋ的配置文件的Ｐａｃｋａｇｅ中继承上面的配置文件就可以了

 

     < include  file ="xwork-losbgm-default.xml"   />
     < package  name ="showOilLib"  extends ="xwork-losbgm-default" >
         < action  name ="showOilLibAction"
            class ="com.xj.action.Oil.ShowOilLibAction" >
             < result  name ="success"   > main.jsp </ result >
         </ action >
     </ package >