如何在java中设置会话属性? [英] How to set session attribute in java?
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问题描述
我可以在 scriptlet 中设置会话属性,但是当我尝试在 java 类中设置会话属性时,它显示诸如会话无法解析"之类的错误.那么如何在java中设置会话呢?
I am able to set session attribute in scriptlet but when I am trying to set session attribute inside java class it shows error like "session cannot be resolved". So how to set session in java?
<%String username = (String)request.getAttribute("un");
session.setAttribute("UserName", username);%>
推荐答案
对于 Java 类,我假设您的意思是 Servlet 类,因为在任意 Java 类中设置会话属性没有意义.您可以在您的servlet 的 doGet/doPost 方法
By Java class, I am assuming you mean a Servlet class as setting session attribute in arbitrary Java class does not make sense.You can do something like this in your servlet's doGet/doPost methods
public void doGet(HttpServletRequest request, HttpServletResponse response) {
HttpSession session = request.getSession();
String username = (String)request.getAttribute("un");
session.setAttribute("UserName", username);
}
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