Struts2在动作类中访问Servlet的API

﹏ヽ暗。殇╰゛Y 2022-05-18 03:52 163阅读 0赞

**第一种方式：使用ServletActionContext类**

输出结果：  
![这里写图片描述][70]  
第二种方式：使用实现接口的方式

package com.qianfeng.web.action;
    
    import javax.servlet.ServletContext;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import javax.servlet.http.HttpSession;
    
    import org.apache.struts2.ServletActionContext;
    import org.apache.struts2.interceptor.ServletRequestAware;
    import org.apache.struts2.interceptor.ServletResponseAware;
    import org.apache.struts2.util.ServletContextAware;
    
    import com.opensymphony.xwork2.ActionSupport;
    /** * 1：使用ServletActionContext获取，建议使用这种 * 2：使用注入的方式，拦截器实现注入，servletConfig： * 1：定义成员变量 * 2：实现接口 * 3：实现接口中的方法 * @author Administrator * */
    public class TestAction extends ActionSupport implements ServletRequestAware,ServletResponseAware,ServletContextAware{ 
        //第二种使用注入的方式
        private HttpServletRequest request;
        private HttpServletResponse response;
        private ServletContext application;
        public String execute() throws Exception {
            HttpSession session = request.getSession();
            System.out.println(request);
            System.out.println(response);
            System.out.println(application);
            System.out.println(session);
            return null;
        }
        @Override
        public void setServletContext(ServletContext application) {
            this.application=application;
        }
        @Override
        public void setServletResponse(HttpServletResponse response) {
            this.response=response;
        }
        @Override
        public void setServletRequest(HttpServletRequest request) {
            this.request=request;
        };
    }

运行结果：  
![这里写图片描述][70 1]  
![这里写图片描述][70 2]

[70]: /images/20220518/1af8039fcaf34e1a82152295aa9963fa.png
[70 1]: /images/20220518/dcc2fbf7f431448bb666e8128d445d84.png
[70 2]: /images/20220518/013856cbd29d45548d6c658352d41698.png