Action类中通过继承xxxAware接口来获取web资源

1.编写Action类继承相应的接口：

package com.xuzhiwen.action;

import java.util.Map;

import org.apache.struts2.interceptor.ApplicationAware;
import org.apache.struts2.interceptor.ParameterAware;
import org.apache.struts2.interceptor.RequestAware;
import org.apache.struts2.interceptor.SessionAware;

public class AwareTest implements ApplicationAware,SessionAware,RequestAware,ParameterAware{
    private Map<String,Object> applicationMap;
    private Map<String,Object> sessionMap;
    private Map<String,Object> requestMap;
    private Map<String,String[]> paramsMap;
    
    @Override
    public void setApplication(Map<String, Object> applicationMap) {
        this.applicationMap = applicationMap;
    }
    @Override
    public void setParameters(Map<String, String[]> paramsMap) {
        this.paramsMap = paramsMap;
    }
    @Override
    public void setRequest(Map<String, Object> requestMap) {
        this.requestMap = requestMap;
    }
    @Override
    public void setSession(Map<String, Object> sessionMap) {
        this.sessionMap = sessionMap;
    }

}

四个接口的方法会被struts2框架自动调用。

这样就可以获取到四个对象了，并调用对象中相应的方法