JSLT获取session的值

Love The Way You Lie 2022-05-20 22:44 171阅读 0赞

设置session：

String name = request.getParameter("name");  
String password = request.getParameter("password");  
session.setAttribute("name",name);                                                                                                                                                                                                                                                                                                                                                                               
session.setAttribute("password",password);  
if(jdbctest.login(name, password))  
\{  
    out.println("登录成功");  
    out.println("====");  
    response.sendRedirect("index.jsp");  
\}  
else  
\{  
  //生成页面响应  
  out.println("====");  
  //重定向到error.jsp页面  
  response.sendRedirect("error.jsp");

使用JSLT获取session的值:

先在JSP开头写上：

1.  <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>  （c标签的包）
2.  <%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>  
3.  <%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>

<c:out  value="$\{sessionScope.UserInfo.userName\}"/>  
  
或者直接使用：  
$\{sessionScope.UserInfo.userName\}

servlet中，通过url上传参，jsp中，使用param获取参数。

例如：

servlet中：response.sendRedirect("buyer/udai\_integral.jsp?allIntegral="+allIntegral);

jsp中： <span >$\{param.allIntegral\}</span>

url的默认对象为：param