6、struct2使用servlet的api函数

方法一：

Struts2的Action访问Servlet API

可以通过实现装配接口没，完成对Servlet API的访问
* ServletRequestAware取得HttpServletRequest对象
* ServletResponseAware取得HttpServletResponse对象
* ServletContextAware取得ServletContext对象（工具类）

package com.weiyuan.test;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts2.interceptor.ServletRequestAware;
import org.apache.struts2.interceptor.ServletResponseAware;
import org.apache.struts2.util.ServletContextAware;

/**
 * struct2的action可以不继承任何框架的接口
 * 1、默认调用的是execute()方法
 * */
public class LoginAction implements ServletRequestAware,ServletResponseAware,ServletContextAware {
    private String username;
    private String password;
    private HttpServletRequest request;
    private HttpServletResponse reponse;
    private ServletContext servletContext;
    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String execute() throws Exception{

        /**
         *
         * 这个地方就是可以进行和原来的操作了
         * */

        if("admin".equals(username)&&"admin".equals(password)){
            return "success";
        }else{
            return "error";
        }
    }

    @Override
    public void setServletContext(ServletContext servletContext) {
        // TODO Auto-generated method stub

    }

    @Override
    public void setServletResponse(HttpServletResponse reponse) {
        // TODO Auto-generated method stub

    }

    @Override
    public void setServletRequest(HttpServletRequest request) {
        // TODO Auto-generated method stub
        this.request = request;
    }

}

方法二：

Struts2的Action访问Servlet API

可以通过ServletActionContext提供的静态方法取得Servlet API

* getPageContext();
* getRequest();
* getResponse();
* getServletContext();