获取HttpServletRequest / HttpSession / ServletContext / HttpServletResponse对象

程序员文章站 2022-04-23 16:55:56

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获得这些stuctsHttpServletRequest / HttpSession / ServletContext /
HttpServletResponse对象方法有两种：

第一种：直接得到对象方式

<1、编写Action

public class ServletObject {

public String rsa()
{

HttpServletRequest request=ServletActionContext.getRequest();

request.setAttribute("request", "Request");

ServletContext servletContext = ServletActionContext.getServletContext();

servletContext.setAttribute("application", "Application");

request.getSession().setAttribute("request", "Request");

HttpServletResponse response = ServletActionContext.getResponse();

return "scope";
}
}
<2、配置struts.xml文件
<action name="sevletScope" class="com.liyong.ServletInlayObject.ServletObject" method="rsa" >
<result name="scope">/WEB-INF/page/scope.jsp</result>

 </action>
<3、编写scope.jsp得到写入的值
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
 <title>My JSP 'hello.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">

</head>
<body>
 Application:${applicationScope.application} 
Session:${sessionScope.session} 
Request:${requestScope.request} 
</body>
</html>
<4、部署

第二种：implements ServletRequestAware, ServletResponseAware, ServletContextAware这些接口在实现方法中得到对象

<1、编写Action
public class HelloWorldAction implements ServletRequestAware,
ServletResponseAware, ServletContextAware {

private HttpServletRequest request;
private ServletContext servletContext;
private HttpServletResponse response;

public void setServletRequest(HttpServletRequest request) {
this.request=request;
}

public void setServletResponse(HttpServletResponse response) {
this.response=response;
}

public void setServletContext(ServletContext servletContext) {
this.servletContext=servletContext;
}
public String rsa()
{

//HttpServletRequest request=ServletActionContext.getRequest();

request.setAttribute("request", "Request");

//ServletContext servletContext = ServletActionContext.getServletContext();

servletContext.setAttribute("application", "Application");

request.getSession().setAttribute("request", "Request");

//HttpServletResponse response = ServletActionContext.getResponse();

return "scope";
}
}
<2、配置strus.xml文件

<action name="sevlet2Scope" class="com.liyong.ServletInlayObject.HelloWorldAction" method="rsa" >
<result name="scope">/WEB-INF/page/scope.jsp</result>

 </action>

<3、编写scope.jsp文件得到写入的值
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
 <title>My JSP 'hello.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">

</head>
<body>
 Application:${applicationScope.application} 
Session:${sessionScope.session} 
Request:${requestScope.request} 
</body>
</html>
<4、部署

.......

相关标签：获取HttpServletRequest HttpSession ServletContext HttpServletResponse对象

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